Crusher problems arising from the use

A smelter feed system consists of a conveyor belt feeding, jaw crusher through into the next process. A night shift (0:00 to eight in the morning), Wang workers in this position

is responsible for operating, because the duty of broken chunks of raw materials are more difficult to eat into the crusher encountered

Chunks of ore must stop the ore out, first of its artificial Zacheng pieces with a sledgehammer. Normal operation when feeding shift production tasks completed more than five

hours long, which returned from there two hours after hours on duty until the completion of tasks around 60%. Six o'clock

So, an aniseed into the crusher, linear vibrating screen operator Wang saw just kept idling, ore no go, they put a belt conveyor stopped, walked straight up to the crusher feed opening, left

foot on the console edge, right hard to step crusher ore feed port. Final stones

To be squeezed in, but because of too much force Wang, right foot into the crusher, all of the following folders broken ankle.

Direct cause

Wang illegal operation. In order to complete the shift of production tasks, anxious. In accordance with the procedures specified crusher plant, crusher is jammed material must

stop processing. And Wang did not take measures to stop treatment, but with the foot lump ores, resulting in the accident

Happen.

Indirect causes

1, the plant safety management lax. Wang Failing to wear protective shoes to work, duty squad discovery of this situation has not put a stop to.

2, employee safety awareness is weak. Wang if this accident a little more than self-protection awareness, completely avoid the accident.

3, heavy production does not result in the heavy security is also one of the reasons the incident occurred.

Responsibility

The plant safety authorities and through the accident scene investigation and analysis of the operating environment, decided that this was man-made accidents. Wang primary

responsibility for the accident, neglect of duty squad management is also due for the accident can not shirk responsibility. Responsibility for two people into the plant

Line treatment: Wang has constituted serious injuries, no longer do economic sanctions, to be recovered 30 days after the stoppage reflect and write a written guarantee. Duty

squad were treated with removal treatment.

Precaution

1, to strengthen safety knowledge training and education, enhance the safety awareness of workers, improving their safety skills and self-protection capabilities.

2, increase the production site safety inspection efforts to prevent illegal operations, illegal command.

What are the advantages vertical crusher

Vertical Crusher mainly vertical impact crusher and vertical compound crusher. Vertical Crusher advantages: simple structure, easy operation, energy saving, grading crusher,

dust is small, good wear resistance, long life, and uniform distribution of materials. In addition, vertical crusher

No sieve, thereby overcoming the crusher often high frequency screen clogged. Vertical crusher hammer link uses hinged structure, easy to replace. Vertical crusher surface mounted guard serrated

liner, thus improving the degree of breakage of the material, reduces the noise, increasing

Added wear resistance. Vertical crusher is also an important feature that can be added in front of the traditional ball mill. Preceded by a vertical mill crusher is mainly to

reduce the particle size of the material so that it can play a role in energy conservation. Energy conservation is not only the survival of enterprises

Conditions, but also enhance competitiveness and develop strength needs.

How to select Cone Crusher

Cone crusher can be divided according to purpose in coarse crushing and fine crushing two kinds; according to the structure and function can be divided into hanging cone

crusher, cone crusher and prop shaft vibrating cone crusher three. Used for coarse crushing cone crusher, gyratory crusher known.
     Used in crushing cone crusher has two kinds, conventional type cone crusher, the processing of the material after dewatering screen block, and therefore do not need a large feed

opening, but requires increased discharge scope to increase production capacity the crushed product requires a relatively uniform particle size. Moving cone system

A date-shaped, near the discharge port, moving the cone equal to a distance between the parallel strips, in order to ensure uniform particle size of material discharged. Plug

type cone crusher cone surface slope is small because of moving, unloading material rolling down the slope along the moving cone. Therefore, the discharge would be beveled

Frictional resistance, but also by the deflection cone, the rotation of the centrifugal force of inertia. It is not free of such waves crusher discharge, and thus the working

principle and calculation were associated with coarse crushing cone crusher is somewhat different.
    Using conventional grinding method, grinding is accidental cross-section, there is no choice, on the one hand be most part, they have a crushing effect, the other will

produce a partial vertical grinding, resulting in the useful part due to excessive pulverization can not be Head close.
    It is also vibrating mining screen after crushing material handling initial block, and its feed opening is not large. Its function cone and fixed cone is upright, in order to

achieve selective crushing effect, the moving cone on the spindle by eccentric block, when the motor is driven by a drive unit moving cone spindle rotating eccentric

Turn, create an imbalance exciting force, so that moving cone from the original location. Material from the upper part gives the fixed cone and fixed cone crushing cavity

composed of the crushing chamber from top to bottom during the movement by repeated compression, impact, generally up to 30 times more than the material in this process

constantly flip roll

Move, changing the angle of the force on the material, the material crushing, the material being crushed by the crushing chamber discharge, discharge from the crusher crusher

discharge port.

Cone crusher range of applications

Cone crusher used in metallurgy, construction, road building, chemical and silicate industry, raw material crushing, can crush medium and above medium hardness ores and rocks,

specifically in the following field use mostly.

A cone crusher is widely used in crushing and fine crushing hard materials.
Two raw materials in industrial and mining crushing, when the production volume is small, you can choose jaw or banana screen, but larger companies, all using cone crusher.
3 used for crushing extremely hard materials such as finely divided zirconium corundum, but the operation must take appropriate measures, because this material most material

hardness Mohs hardness of 9.7.
4 products for applications requiring sand vibrating screen grains more occasions, proved, cone crusher products more cubic particles, particularly its size close to the discharge

opening width of that part of the grain size, the shape of the product is good, cubic particles are mostly .

Chain crusher

Chain crusher and hammer crusher, impact crusher belong horizontal rotor type crusher, chain crusher according to installation into the form of vertical and horizontal chain

chain crusher crusher two structural forms. Vertical chain crusher is a single rotor, horizontal chain crusher for dual rotors. Chain crusher main working parts with a steel

chain of the rotor, the rotor is connected to one end of the chain, the other end of the chain there is safety chain made of wear-resistant steel head. Chain crusher through the

high-speed rotation of the chain block material impact on pulverized. Horizontal chain crusher double rotor structure, each rotor shaft has its own drive motor, the peripheral

speed of the first chain 28 ~ 78m / s range.

Horizontal chain crusher into the feed intake, body, spout, the rotor (including bearings), gearing and shock absorber components. In order to prevent sticking of the wear plate

body materials, the body lined with rubber plate, on both sides of the body is provided with quick access door open, the body, the drive device is mounted on a base made of

steel, the lower mounting base damper connected with the foundation. Chain crusher long-term use, proven machine easy to use, high efficiency, large production capacity, easy

maintenance. Suitable for crushing kinds of bulk fertilizers and other bulk materials of medium hardness. Horizontal chain crusher plant can crush without drying aqueous 14%, with 6%

free acid and a variety of superphosphate fertilizer phosphorus and potassium compound fertilizer products, which overcomes many domestic compound fertilizer production plant

using vertical chain crusher crusher and other materials in the production operation bonded to the casing wall, resulting in the production can not be shortcomings. Horizontal

chain crusher crushing the compound fertilizer production processes to achieve continuous production, improve production efficiency, reduce labor intensity operations, improved

operating environment. Chain crusher compound fertilizer production line in the application of more fertilizer can be large (mean diameter greater than 4mm), crushed to an

average diameter of 1 ~ 4mm granular fertilizer.

Single rotor hammer crusher

Single rotor hammer crusher hammer crusher is a kind of class are horizontal rotor crusher, which is divided into reversible and non-reversible two types.

Reversible sand screen rotor rotates in one direction first, the material for crushing. The direction of the liner, sieve and hammer ends that are subject to wear. Wear to a

certain extent, reverse the direction of rotation of the rotor, this time using a hammer crusher and the other of the other end of the liner and the sieve work, so the life of

almost continuous doubled. Irreversible single rotor hammer crusher rotor rotates in one direction only. When the end portion of the hammer wear to a certain extent, to stop the

hammer in the direction exchange (to 180 °), or replace the hammer.

Single rotor hammer crusher chassis by the two parts, namely steel plate welded into the various parts bolted into one. From high-manganese steel liner, liner wear can replace

them after. In order to facilitate maintenance, adjustment and replacement screen bars, front and rear chassis on both sides opened a manhole. To facilitate the replacement

hammer, chassis side walls also opened a manhole. crusher machine several rows disc mounted on the spindle, the rotor disc has two rows of pin holes, when the hammer after wear of the

end inserted in the outer hole of the pin, hammer and screen to adjust the gap between the strips. Hammer with a pin hinged between the rows of discs, in order to prevent axial

movement of the disc and hammer, hammer the disc ends with a clamping nut plate and pin fixation. Supported on bearings on both ends of the rotor, bearings bolted to the

chassis. Spindle and motor directly coupled with flexible coupling. For smooth operation of the rotor, the other end of the spindle with the flywheel.

Arcuate bottom of the rotor discharge sieve, sieve mounted at both ends of the beam, with the outermost sieve clamping plate, sieve arrangement direction perpendicular to the

direction of movement of the rotor. Sieve clearance by the protruding portion is formed intermediate sieve. In order to facilitate the discharge of material, sieve sieve formed

between the outward expansion joints, but also the direction of the rotor tilt. In the feed section is also equipped with pads, are the first materials to withstand impact and

abrasion areas. Pads and linings and other components from the pallet assembled. Pallet with steel welded, top liner is high manganese steel castings, assembled with two-axis

rack mounted on the body in the crusher. Available feed angle adjustment bolt to adjust, worn liner can be replaced. Hammer is mounted on the hinge pin on the way, because it is

free-hanging, rotating at high speed hammer flared, encounter difficulties when broken objects, they can swing along the pin, thereby avoiding mechanical damage, plays a

protective effect. When broken hard objects (such as iron objects) into the crushing cavity, under the blows of the hammer, non-broken by a hammer is not discharged to the

screening of the client and the larvae L by an ad hoc regularly removed to avoid a hammer and sieve, etc. mechanical damage. In addition, the drive unit is also equipped with a

special safety device, the use of safety pins, the overload is cut, the motor and the crusher rotor off, play a protective role. '

Jaw crusher frame bearing or excessive temperature rise within the moving jaw approach

Jaw crusher or jaw rack bearing excessive temperature rise within the possible reasons:
1 bearing off the oil or oil injected too much;
2 hole plug, oil plus not enter;
3 Fly counterweight sheave block position deviation, rack beating;
4 tight sleeve axial movement occurs;
5 cage bearing wear or damage, etc.;
6 Non-bearing temperature rise, but moving jaw gland and end caps bearing friction heat or rack dual damascene cover together with the spindle rotation, friction heat.

Jaw crusher or jaw rack bearing excessive apron feeder temperature rise within the exclusion method:
1 Press the instructions provided on time quantitative refueling;
2 clean hole, tank obstructions;
3 transfer is flying counterweight sheave block position;
4 Remove the rack bearing caps lock firmly fixed bushing and remove the flywheel or sheaves, replacement of the adapter sleeve;
5 Replace the bearings;
6 Replace the cover and the crushing equipment glands, fever or loosen the rack bearing bearing cap on one end, together with the fuse cover with embedded bearing pressed into the

chassis slot, and then set on the bearing cap, remove embedded lid rotation.

Jaw crusher during operation how to solve problems

Jaw crusher production was less than factory standard Remedy:
A) replace or add crusher;
2) exchange of electrical wiring;
3) discharge opening adjustment to the instructions provided for a nominal discharge opening and increasing crusher for crushing;
4) Check teeth from the size, such as inconsistent with standard replacement jaw plate, align the fixed jaw plate and movable jaw plate relative position, ensuring the top gear

tooth root, the fixed belt weigh feeder clamping to prevent displacement;
5) increase the voltage at work to adapt the host overload requires;
6) Replace bearings or moving the jaw.

Activities jaw broken when working with fixed jaw why beating or crash?
Remedy:
A) True or bolts tight;
2) align the discharge opening, to ensure proper clearance two jaw plates.

Jaw crusher host sheaves, moving jaw functioning normally, but broken cease work? Remedy:
1) Replace tension spring;
2) Replace rod;
3) Re-install or replace brackets.

Jaw crusher host suddenly stop (commonly known as: boring car) exclusion method:
1) Clear the blockage discharge opening to ensure smooth flow of the material; 2) tighten or replace the V-belt; 3) Re-install or sand vibrating screen replace adapter bushing; 4) alignment workplace

voltage, to conform to the host operating voltage requirements; 5) Replace the bearing.

Roll crusher Basics Introduction

Double roll crusher is crushing machine, sand making series one. There crusher jaw crusher, hammer crusher, impact crushing equipment, compound crusher, etc.; there is a third-generation

Sand Sand, impact crusher, rod mill Sand and so on. Today we look at two-roll break

Crushers in the course of the first places to pay attention. Double roll crusher maintenance is a very important regular work, it should be extremely closely with operations and

maintenance, etc., should be full-time personnel on duty checks.


A, bearing: crusher manufacturer bearing shoulder the entire load of the machine, so good lubrication for the bearing life of a great relationship, it directly affects the life of the

machine and the operation rate, which requires injection of lubricating oil must be clean, seal must well, at the machine's main oiling

1 Turn the bearing (2) roller bearing 3 All gear 4. Activities bearing, sliding plane.

B, newly installed tires prone to loosening must always be checked.

C, Note the various parts of the machine is working properly.

D, pay attention to check the wear parts wear, and pay attention to replacement of worn parts.

E, put the base of the plane active device should be out dust and other materials in order to avoid the machine encounters can not be broken material activities bearings can not

move on the bottom shelf, resulting in a serious accident.

F, bearing temperature rise, the reasons should be eliminated immediately stopped and checked.
  
G, rotary gear when in operation should be immediately stopped if the impact of the sound check and eliminate.
The roll crusher working principle and structure
 
1, the series on the roll crusher is mainly composed by the roller, the roller support bearings, clamping and adjusting devices and drive components.

    2, the particle size of the adjustment: between two rollers or pads with wedge adjustment device, wedge device with the top adjustment bolt, when adjustment bolt will pull

up when the wedge, wedge away from the top of the active roller fixed wheel, two roller gap becomes larger, the particle size becomes larger, when the wedge

Down, the activity roller compression spring under the action of two gap becomes smaller, the particle size becomes smaller. Spacer device is a quantity or thickness of shims to

adjust the size of the particle size, while increasing gasket two roller gap becomes larger, while reducing gasket two roller gap becomes smaller, the

Smaller particle size.

    3, the drive mechanism is composed of two electric motors, by belt drive to the sheave drag roller, relative to the direction of movement in accordance with rotation. In the

broken material, the material from the inlet through the rollers, rolled and broken, crushed beneath the finished product is discharged from the chassis.

    4, for safety, transmission parts should be installed according to the actual situation of their own safety cover.

    Double roll crusher for mineral processing, chemical, cement, refractories, abrasives, building materials and other industrial sectors crushing all kinds of high, medium

hardness ores and rocks purposes, especially in the building industry in the production melon meter stone and green bean products, better than the average crusher

Different effects.

Roll crusher working to pay special attention to the following:

    1) To strengthen the work to iron ore. Non-broken (top brazing material) fall on the rollers will damage the crusher, resulting in parking accidents. So the crusher should

be installed before removing iron devices.

    2) crushing space viscous materials prone to clogging, clogging failure in handling should stop treatment, can not be stabbed mine in operation.

    3) When dealing with bulk materials containing large, easy to pay attention to chunks of ore from the crushing space squeezed out, to prevent injury or damage to equipment.

    4) roll crusher run a long time, due to the roll surface wear larger size too small will cause the product, then pay attention to adjust the port of discharge or overhaul of

equipment.

    5) to strengthen the inspection of the equipment, the equipment lubrication oil on time, keep the equipment well lubricated condition.

How to choose the gravel production line equipment

1, how to build sand stones factory, stones factory, quarries, gravel plant, sand plant, mines?

The first step is to investigate the market, to see whether the market prospects in this business, how to profit? Marketability How? Do not fight blind battle.

The second step selected mines or river, for the relevant mining procedures, this is a must, otherwise even hastily produced, will be a lot of trouble.

The third step is to examine the device, select a relatively strong strength of all aspects of the manufacturers, a set of excellent quality sand and gravel production line

equipment.

The fourth step, when buying the sieve classification stone screening machineequipment, these devices does not work, is just one part of the crushing and screening machinery,

engineering machinery need to be addressed, such as loaders, excavators, transport vehicles, issues, and blasting mining equipment problem.

The fifth step, installation and commissioning of all equipment in place after commissioning, recruit workers, fixed mining system, a management, contact customers, production

and sales, in fact, a considerable part of the actual operation is the first customer to reinvest factories production, sales is the first one .

2, commonly used gravel production line, dewatering screen production line, aggregates production equipment needs what machinery?

Crushing and screening, aggregates production lines, including coarse jaw crusher, fine jaw crusher, impact crusher, cone crusher, hammer crusher, roll crusher, vertical shaft

impact crusher (sand making machine), vibrating feeder, vibrating screen, sand washing machine, in order to

And the type of conveyors and other equipment. Press the installation is divided into fixed, semi-mobile and mobile three, the processing capacity of 10 ~ 500t / h, product size

and grade distribution according to user needs, usually 0 ~ 40mm.

The use of hammer type mill feat Analysis

A crushing effect of the main factors affecting

Hammer mill process effect, with the degree of crushing, grinding process of production and energy consumption, etc. 3 indicators assessed. These targets depend on the physical

properties of the crushed material and physical structure, shape and size of the sieve, hammer circle around speed hammer and screen surface between

Clearance and so on.

1.1 smash the structure and physical properties of materials

Different feed different physical properties of the original powder, crushing their different degrees of difficulty. Crushed seeds with a large cortex and the original powder

structure more closely than crushed seeds with loose skin less difficult and more. Excessive moisture content of raw materials, increase the toughness of the material will

Lead hammer mill consumption increased and yield. Meanwhile, the high moisture content of the raw material, but also easy to plug the sieve, resulting in reduced yields.

1.2 sieve

Improve the ability to sieve through the outside in addition to increasing the effective area of ​​the sieve, sieve and other scales may also be used. In order to improve the

sieve through the ability to increase production.

1.3 hammer tip speed

Tip speed hammer mill affect the performance of the important factors. Grinding the material with the degree of productivity of the mill hammer tip speed increases the increase.

Series of hammer mill design products, its hammer tip line speed of 8090 m / s, in order to adapt to corn, wheat-based material crusher machine. Hammer at the end of line speed is

generally determined by orthogonal experiment.

1.4 Hammer ends with the gap between the sieve

Hammer and sieve mill is the gap between the performance of the important parameters. Mill operation, the grinding chamber sieve circle forming materials combined with a

circulation air layer to a certain speed with the rotor rotation. Close to the screen surface material movement is slow, the inner faster. Ring

Stratosphere is often mixed with coarse particles, showing stratification.

1.5 Flow

Hammer mill for crushing effect of flow has an important impact. Its total energy consumption increases with the flow becomes larger. However, increases in a certain range, the

production growth faster than the increase in energy consumption, low energy consumption time t material. Therefore, to achieve t material under conditions of minimum energy

Should stabilize hammer mill traffic.

1.6 mill of suction

Hammer mill using suction method can reduce the temperature of the material, to prevent the sieve clogging their productivity than not suction discharge increased by 10% when

25%.

2 Installation

2.1 Installation Requirements

Hammer mill should be installed in the basement or ground floor upstairs, lay the foundation of stone or concrete. Medium and large mill should be installed with matching

dampers to reduce vibration and noise.

Using more than 15 kW motor, should buck starter to reduce the starting current, should be fitted with the same capacity supporting ammeter, voltmeter, power meter and switches

and other instruments.

2.2 Safety checks

After installation grinder safety checks should be carried out to determine the no problem to run.

Check the integrity and fastening parts, especially high-speed hammer and other parts must be firmly fixed; checking mill in the machine base is solid; checks bearing

lubrication condition; grinding chamber door open, check whether the debris crushing chamber .

The inspection is completed, everything is normal, you can empty running 1520 minutes, the observation is installed correctly or not.

After idling should stop checks, as part of the technical state of the normal, before re-starting, to be normal speed before the load operation.

3 operation precautions

3.1 must be carefully checked before driving the fasteners, without loosening. Coupling or drive belt installation meets requirements. Power lines should be good, the motor

should be grounded. Materials shall not be mixed with iron, gravel and other debris.

3.2 Turn the rotor by hand to check its rotation is flexible, there should be no collision and friction sound card.

3.3 sieve be installed securely sealed and not leak material, sieve frame to tighten.

3.4 work process, such as abnormal noise, the material clogging, bearings or motor overheating (temperature over 40), you should stop feeding, stop checks, troubleshooting.

3.5 end of the work should be idling 23 minutes, the material inside the machine is completely discharged only after stopping grinder and fan.

3.6 operations must strictly ensure safety in production. Operator should be familiar with the machine's performance and structure, have the person responsible. Troubleshooting,

adjustment and cleaning machine should cut off the power, parking. Non-random improved mill speed. Should always check the cotter pin on such

Excessive wear or fracture spalling, should be replaced immediately.

4 hammer mill adjustment and maintenance

4.1 sharp corners with a blunt hammer after the reverse angle adjustment can be used (reversing mill can change the direction of rotation can use another sharp corners). If the

hammer end of the corners are worn, they should turn around and use. In turn or angle adjustment, should all of the hammer simultaneously to

To maintain balance of the rotor. Corners worn, the hammer should be all the new ones, which are arranged according to the instructions of the way, each hammer poor quality

should not exceed 5 grams.

Some wear hammer mill in late due to wear unevenly, prompting grinder loss of balance, increased vibration. You should correct rotor static balance, regroup or replace hammer

hammer.

4.2 sieve worn or damaged should be replaced. Installation screen films, sieve with a burr side should where smooth outward, sieve and sieve frame to fit tightly. Ring sieve

tablets in installation, which should overlap the inner layer of stubble along the direction of rotation to prevent the feed in the lap stuck.

4.3 After the end of the work shift, the machine should be cleaned inside and outside, remove dust and dirt in order to avoid rusting machinery, sieve clogging dust dirt

entering the bearing.

4.4 Periodic inspection, cleaning and lubricating bearings.

4.5 found machine parts have serious wear and damage should be repaired promptly replaced, repaired rotor should be balanced.

5 Common Faults and exclusion method

Symptom Cause Remedy difficult to start a motor. Voltage is too low 1. Escape peak then start 2. Conductor cross-sectional area is too small 2. Changing the appropriate wire 3.

Starting compensator is too small 3. Put startup compensation unit 4. fuse easily blown 4. conversion and motor capacity in line fuse

Motor weakness overheating 1 running a two-phase motor. Turned off phase, three-phase operation 2. Motor windings shorted 2. Overhaul the motor 3 long-term overload 3. Rated

load is a strong vibration mill work. Hammer mounted arranged mistaken one. hammer arranged by reinstalling 2. corresponding groups of poor quality hammer is too large 2.

Re-exchange the hammer, so that each group of poor quality is not more than 5 g 3. Individual hammer stuck without bypassing 3. Makes hammer rotating flexible four. Rotor

unbalance four other components. Balanced rotor 5. Shaft bending 5. School Straighten or replace a new shaft 6. bearing damage 6. Updated bearing grinder 1 stone and other hard

objects into the machine

Within one. Downtime clear hard objects abnormal noise 2. Machine parts missing or damaged 2. Shutdown inspection, replacement parts 3. Hammer sieve gap is too small 3. The gap

compliance sizes productivity decreased significantly 1. Motor power less than 1. Overhaul motor 2. hammer severe wear 2. turn around to use or replace hammer 3.

Original powder feeding uneven 3. Uniform feed 4 raw water is too high 4. Drying raw material inlet anti-spray. Transport pipe 1 pipe blockage 2 sieve clogged 2. Cleaning or

replacement mesh sieve too coarse a finished product. sieve badly worn or have holes in one. fill holes or replace sieve 2. sieve and sieve frame stickers

Co-lax, or side gap is too large 2. Downtime, so sieve and sieve frame fit tightly.

Bearing overheating a spindle motor hub with a different heart. Adjust the motor shaft concentric with the center to make it 2 grease too much, too little or poor 2 for grease,

required filling 3. Bearing damage 3. Renewal bearings 4 spindle is bent or rotor imbalance 4. correction spindle balancing rotors 5 long-term

Overworked 5. Reduce the feed rate

Cake timber body hammer crusher innovations in devices than the car

One, cake hammer mill sieve corners improvements

General cake hammer mill sieve wrap angle of 180, ie entire cake entry through the feed into the crushing chamber after repeated hammer blow, collision, friction to become

powdery material, and the centrifugal force and radial airflow under the effect of flow through the sieve into the secondary crushing process exhausted to the outside.

Because cake hammer mill sieve real effective wrap angle less than 180 in the operator pusher momentum caused when too much lower spindle speed, the centrifugal force and radial

flow decreases. This will affect the flow of mobile crushers for sale, so that part of the material required to achieve granularity stranded in the grinding chamber.

Therefore sieve wrap angle increases to 270, changing the mill working conditions, so that mill production efficiency.

Two, two fixed hammer mill cake cutter design

9FB-2 type, 9FB-45A type, etc. cake hammer hammer mill can be transferred activities mostly hammer, usually 32, divided into four groups staggered. Hammer sieve clearance 12mm,

maximum working spindle diameter 500mm, coal crushing plant chamber width 600mm. Installation activities hammer hardness than the advantage is that when

Big cake material feeding, the cushion. Piece of cake as shown in the partial 80 angle tangential direction feed mill. If the operator pushing the momentum is too large, the

spindle speed will drop the hammer sieve gap increases, activity materials hammer crushing capacity decreases, the activity hammer

Under the crushing blow particles increases, so that the material remain in the crushing chamber, resulting in a further decline spindle speed, appear spacious car.

According cake hammer mill this spacious car problem, designed to increase the two fixed cutter. When the operator pushing momentum is too large, each of the two fixed blade

cutter located between two active hammer, the hammer from its maximum working edge radius 10mm, pieces of broken material limits

Grain increases. Make up the momentum caused by human spindle speed spindle speed down a vicious cycle.

1, the cutter arrangement, such as installation and 2, the cutter pulverized material selection characteristics of the cake, its hardness little higher cutting speed, and the

secondary cutting, cutter cutter main consideration the choice of materials toughness and resistance to grindability.

A support plate 2 activity hammer hammer 3 4 knife fixed blade fixed shaft 5 hammer fixing shaft

A fixed cutter 2 Activity 3 hammer hammer cutter fixed shaft 4 fixed shaft

Third, improve the technical parameters before and after the cake grinder and Performance Analysis

Cake with 9FB-2 type hammer mill, for example, improved cake cutter hammer mill sieve wrap angle increased from 180 to 270, row material capacity increased by 40%. Designed and

installed two sets of fixed cutter (the cutting rake angle 30 number 36) 36 Cutter were installed in 18 hammer

Intermediate support plate is located between the two activities hammer. When the spindle speed is reduced, the cutter will limit excessive particulate material produced. Cake

smash in the unit production continuity, stability has been greatly improved, to avoid the occurrence of spacious car, significantly improve production efficiency and reduce

Energy consumption of about 25 - 40%.

For low-temperature freezing broken algae discussion

An Overview
Algae carry out deep cryogenic grinding technology research, development series of health food and convenience foods, in line with China's "food structure nineties China Reform

and Development Program" proposed "nutrition, health care, educational, Yanshuai" development strategy requires , to improve our people

(Especially children) nutritional qualities, is of great significance to the promotion of aquaculture development of new products will also play an important role, and will

generate significant social and economic benefits.

Two main processing technology research

Algae variety (such as kelp, seaweed, Eucheuma, Sargassum, etc.), but the process is roughly the same. Such as basic process: a variety of pre-processing of raw materials → →

→ Vacuum cryogenic freezing cold crush → drying → → → product packaging sterilization. According algae deep hypothermia

Freeze grinding process and the development direction, the main contents include the following basic research and product development, sexual content: (a) to study various algae

pretreatment methods, including pre-cooling, heating, fishy and so on.

(2) The cold brittleness algae presents a glass transition temperature; research on a variety of different temperature conditions granularity of algae. The higher the

temperature the more low cost and must therefore be optimized through a comparative study of cold brittleness can choose both to ensure the best possible cost reduction freezing

temperatures.

Effects of different temperature conditions, different vacuum conditions on the nutritional composition.

(3) Based on the findings, to develop the production of algae ultra-fine powder processing technology.

(4) adding other ingredients of algae powder made from a variety of functional snack food processing (such as a variety of convenient packaging style food, puffed food, etc.).

(5) research algae as a food additive concentrate added processes, such as nutrition rice products (bread, pasta, instant noodles, frozen bread and other pastries Hanamaki) and

nutritional soy products (tofu, such as nutrition, nutrition milk, etc.) to add volume and add methods and so on.

(6) study of algae production and processing of health care products, such as capsules, tablets, granules, etc.

In addition, the need for clinical application research, through clinical eating, testing and contrast micro algae powder processed products and traditional processing dry goods

on the human body absorption rate, determine the product's absorption effect, and select the appropriate size and add product concentration. Conditional, may

Organized by the relevant government departments for children's book groups consumed survey results, it is with great practical significance and the importance of social

studies.

As a new product, the need to study and formulate relevant quality standards, including the requirement to maximize the juice to keep the raw material and physical activity;

ensure that the finished product has the same ingredients consistent color, smell, taste, and has a relatively high body absorption rate; Specifically, provisions must be

clearly particle size

Indicators, such as average particle size should be less than 9 microns, etc.; also need to develop specific water content, total bacterial and E. coli and other indicators;

well as shelf life and so on. Products must meet the relevant standards of food hygiene requirements.

Three main processing equipment technology research

According algae deep cryogenic grinding process, the main processing equipment including cryogenic cooling source, vacuum drying and grinding, vacuum drying technology and

equipment which is more mature, it is critical cryogenic cold source and crushing equipment , therefore, the development of deep cryogenic grinding Algae ultrafine

Products based on one of the conditions is to develop a new type of cryogenic grinding equipment, including compliance with China's national conditions, lower-cost cooling

source, and fine granularity meet the requirements of grinder.

3.1 cold source to achieve the purpose of finely pulverized materials for cryogenic cooling source two basic requirements: First, have a sufficiently low boiling point, brittle

materials to achieve the degree of cold; Second, we must be able to quickly remove the material in the grinding process converting the kinetic energy generated due to the heat,

to avoid material as

The rise of temperature recovery toughness and food nutrition changes, thus ensuring the quality of the material during milling. At home and abroad using cryogenic liquid

nitrogen or cold source is basically a liquefied natural gas, including liquid nitrogen as non-toxic and non-flammable, odorless, reached its boiling point at atmospheric

pressure - 196 ℃

, Sufficient to make the most of the material presented cold brittleness, therefore it has become a major source of cold application. As in Japan, the first with liquid nitrogen

frozen rice, soy, meat, vegetables, spices and other food ingredients, followed by grinding mill into and maintain a constant temperature with liquid nitrogen. Granularity is

the use of

The mill opening slot board be adjusted. Micro-grained up to 0.06 mm or less, either crushed fatty meat, food ingredients, you can also create a new type of health food

products.

However, in the domestic application of liquid nitrogen cold source there is a big problem, that is, high cost, high-value products for the turtle products is acceptable, while

algae may affect the application of its marketing. Therefore, whether the application at home and abroad in recent years, the emergence of new cold source such as the current

number of domestic

Research institutes, universities and other research in the gas wave refrigerator.

Gas wave refrigerator is a new expansion of the air cooler at home and abroad has more mature technology and preliminary products can be produced from - 125 ℃ cold air, the

light hydrocarbon recovery in the oil and natural gas dehydration unit in medium have been applied.

3.2 grinding equipment: In the research and development of new coal crusher machine equipment, domestic Currently, some research institutes, universities and enterprises in the research,

and made progress. Such as the application cryogenic grinding steel scrap tires, this work has environmental recycling double

Significance. Tire rubber at room temperature for the ductile materials, crushing difficult, power consumption is also large, and when broken produce a lot of heat, so that the

rubber aging, the quality deteriorates, so the tire rubber is difficult to reach room temperature crush crush more than 30 mesh size. The use of the rubber at low temperature

embrittlement

The physical properties of the recovered waste tire placed under low temperature grinding, in order to obtain fine powder freezer recycling. Currently industrialized Western

countries has been achieved. In addition, China is studying along with ultra-fine ceramic powder processing, manufacture of advanced ceramic products are Off

Key technologies.

Most of the conventional grinding method using a hammer mill, but the granularity is limited, such as mechanical hammer mill product size is generally not more than 80 mesh, and

there are a lot of heat generated during grinding, impact materials (especially food) quality problem. The granularity of the material

Important economic indicators to frozen powder, for example, 40 mesh market price of frozen powder 100 mesh powder is only half the price. And the finer the particle size, the

wider range of applications.

One of the current direction of applied research is a strong jet milling method (such as scroll jet mill): In the deep hypothermia, the use of supersonic vortex flow impact, so

cold brittleness of the material presented between each other and with the wall of the grinding chamber collisions between, to achieve instant smash.

3.3 New cryogenic grinding system envisaged: the use of cryogenic gas wave refrigerator as cold source alternative to liquid nitrogen, if the cost and technical conditions

permit, would be ideal, because it combines the scroll jet mill to form a new and efficient cryogenic grinding system.

The system is most unique is that organically gas wave refrigerator has a certain cold exhaust backpressure as a grinder of power, either through a nozzle to form high-speed

vortex airflow, but also entrainment occurs so that the material into the crushing room, such a design, in addition to saving power grinder

Source, to reduce the construction cost, but also eliminates the need for mechanical moving parts due to address a number of components in the low speed impact and deep work the

mechanical properties and reliability. In the grinding process of cooling effect and eliminating the influence of the heat generated during grinding. Comprehensive national

The situation inside and outside the research laboratory, high-speed vortex airflow crushing Liaoduo instant smash, can reach 100 m ~ 5 m between, it is entirely consistent

ultrafine algae production requirements.

The system's basic process is: First of algae material provided by general compression refrigeration cold air pre-cooling unit, the temperature reached - 20 ℃ ~ - 25 ℃.

Provided by the gas wave refrigerator approximately - 100 ℃ cryogenic freezing air reaches the glass transition temperature, the temperature controlled at - 60 ℃ or so. Gas

wave

Refrigerator cold exhaust (pressure of about 0. 2MPa gauge pressure) can form a high-speed vortex airflow through the nozzle, the occurrence of the algal material entrainment

enter the crushing chamber, the material of the violent collisions occur instantaneously short brittle crushing, and with the tail gas stream discharge grinding chamber. After

completion of pulverization of the gas

Return to re-cool the refrigerator, and then for the next cycle. The system freezing and crushing operations are run intermittently.

New foreign crushing grinding fluid and groups with basic guidelines

Sorting pressure fan (blower aggregates) pressure out of the wind by the sorter hold up the bottom axial cavity of the central region of qualified particles, and then fed to the

filter manifold aggregate separation device. Distributed in the cavity around the sorter coarse particulate material under its own weight (> fan up aggregates

Uplift forces) fell down, the discharge pipe, fork tube into the material to be ground preparation room. Seen from the above mechanism of material particle size distribution

after collision with the rotational speed sorting machines and aggregates fan air flow (pressure) have a certain relationship.

The collected powder material and the air passing the mixed stream, and then into the filter aggregate separation device (bag filter), in the filter implementation of the "gas -

materials" separation. Exhaust gas from the exhaust pipe through the bag overflow concentration from the plane. Qualified with the powder in the bag by high pressure air anti-

After blowing fallen into the product silos, the output from the screw conveyor to packaging.

Basic configuration GP08/GS04 type jet coal screening machine  mill blowback type jet mill technical requirements of the basic configuration is as follows. 1, the system has a feeding system feeding

(hoppers) warehouse 215m3, with a format feeder, hopper feed gas stream with a loose fan and airflow overflow dust filters, discharge tube equipped with a control

Butterfly and prepare the (material) room. 2, milling systems mill system.

The system includes, in addition there is the feed line, "gas - the material to be ground," mixing chamber (tube), compressed air nozzle, "gas - the material to be ground,"

nozzle, milled outside the cavity, etc., together with compressed air and then purifying fixtures and milling chamber outlet tube. Milling system's maximum production capacity

200kg / h

, Working pressure 0165 ~ 017MPa, dimensions (including feeding system) 21283 milling system composed of a compressed air nozzle; 2 "gas - the material to be ground" venturi

inlet combination; 3, "gas - the material to be ground." mixing chamber; 4, "Gas - Subject to grind materials" nozzle outlet combinations; 5

, Intake nozzle seal; 6, "Gas - Subject to grind materials" nozzle; 7, milling chamber; 8, the compressed air nozzle adjustment bolts × 1195m × 4185m.

Sorting system sorting system. The system mainly consists of sorting machines and pipes and other components. With a high speed rotating blades and sorting fan (blower

aggregates). Sorting fan air flow 1800m3 / h, pressure 12.25kPa, power 18kW. Sorters maximum capacity 2.5t / h

, Dimensions 2.2m × 1.95m × 4.8m.

Milling chamber and sorter shell from steel production, milling crusher machine chamber spout close sorter (rotary screen). Sorter speed rotating blade made of special tool steel production.

Milling chamber cavity sorter, product pipelines and the remaining portion of the metal product contact materials are synthetic rubber

Plastic lined.

About jaw crusher fastest boot products

Existing domestic crushers computer-aided design system mostly in two-dimensional AutoCAD environment developed, there are few scholars in the low-end three-dimensional CAD

software such as SolidWorks-based platform for the corresponding studies, although these systems shortened to some extent,

The product design cycle, saving manpower and resources to improve the quality of the product design, but its degree of automation, integration and other aspects there is a lack

of knowledge on the use of the design of these systems also have a high quality of personnel requirements. Then from the perspective of knowledge engineering research, any

product

The designs are knowledge-driven creative process, at home and abroad has been a lot of successful application of KBE techniques and methods for product design precedent, but

the knowledge of engineering principles, methods and techniques applied to the jaw crusher design studies have reported almost no See.

For the above, in order to NX system software as a platform, the use of the basic principles of knowledge engineering, the practical knowledge engineering techniques, NX product

design method and system engineering NX Second Development organically combine research and development model based on NX, PE Jaw Crusher Quick Setup

Meter system. For PE jaw mobile crushers for sale design features, the project team identified the structure and working system shown in FIG. System knowledge base, database, based on the use of

the acquired knowledge jaw crusher rapid design. When necessary, you can also right in the system

Knowledge base of knowledge about the operation. This knowledge, in general, integration in the product template, which includes mature PE Jaw Crusher, PE jaw crusher design

standards, relevant engineering data, expertise, research conclusions and other forms of knowledge. In product

Design, embedded system design and design processes to guide inference mechanism, so just the designer to guide the design process at order entry via the HMI user requirements

for products, such as feed inlet width, length, pressure angle and other major engineering parameters, a simple operation

The inference engine will use these facts and knowledge base premise part of each rule in turn to match the concluding part of the rule as a new fact added to the product design

process. The whole design is based on systems engineering approach, reasoning from the product configuration, overall design, components

Designed to drill-down part design and drive the database is updated accordingly, until all the parts to complete the product design, final assembly in the form of products

available to the designer to design quality audit, if the audit is successful, you can automatically generate engineering drawings, BOM tables and other;

If the designer needs to design parts for this local modifications, you can manually modify the relevant parameters corresponding components re-update the model; if the designer

wants this modification can be used in the design of the future, you can pair through knowledge management knowledge in knowledge

To add or modify, Knowledge Manager will automatically save changes to the knowledge base of this while driving database update model, and ensure that the next automatic

intelligent design automatically choose this modification.

PE jaw crusher Rapid Design System Flow 2PE type jaw crushing plant Rapid Design System Knowledge Base of key technologies to achieve 21 PE jaw crusher Rapid Design System One of the

keys is to establish a sound knowledge base system, including knowledge mining access, classification and storage.

In PE jaw crusher design process, there are two different types of knowledge, one is explicitly normative knowledge, usually from the theory, books or literature, are some of

the common areas of expertise, such knowledge acquisition relatively easy; other heuristic knowledge, that specifically

Family problem-solving experience, often with some kind of subjectivity, randomness and fuzziness, which is a kind of knowledge on how to use the first crushing machine design

knowledge, this part of the knowledge conceptualization, formalization, is to obtain crusher design knowledge of the difficulties lies. Systematic study, the needle

To PE jaw crusher design features that will further subdivided into axiomatic design knowledge knowledge knowledge design principles, design process knowledge, reasoning,

judgment and knowledge of product structure knowledge.

(1) axioms knowledge. Axiom of knowledge, including from the design standards, manuals, specifications and overseas examples of mature products and other related knowledge.

If the customer crusher performance requirements, crusher main model parameters, product design domestic standards.

(2) design principles knowledge. Jaw crusher design of standardized, modular features, crushers and the components of many of the design problem has been summed up specific

mathematical model, such as broken motor power to determine, movable jaw eccentric spindle speed calculations, flywheel and tooth plate wait

Part dimensions determine the strength check, bearing and pulley calculation and selection.

(3) design process knowledge. Mainly refers to the jaw crusher design steps, structural design parameters, and institutional design of crushing chamber, movable jaw member and

the frame structure of the analysis and evaluation standards.

(4) inferring knowledge. Inferring knowledge crusher design process to solve a specific problem in empirical knowledge, is an expert engaged crusher design knowledge and

experience. Inlet size as determined under the clamp angle, swing jaw stroke and the eccentric shaft

Eccentricity, crushing chamber height, crushing cavity shape.

(5) knowledge of the product structure. Primarily reflecting product mix product knowledge module division, product geometry of parts, size, and space constraint relation

between the parts, assembly relations, mainly related to the design of the moving jaw, racks, tooth plate, toggle plate design .

Such as jaw crusher tooth plate design tooth plate object class definitions, tooth plate data collection is a tooth plate design parameters, precision, profile, and materials,

tooth plate method of operation is the tooth plate structure design, strength calculation 2D drawing and drawing.

22NX systems engineering approach to product design to achieve PE jaw crusher rapid design system, the key is to establish the two products suitable for fast design-level

parameter-driven PE jaw crusher three-dimensional digital templates. For as crushers, automotive, aircraft and other complex products,

Often contain hundreds of thousands of parts, and its complex internal structure, a strong correlation between the components. In order to facilitate product design management,

making the product design is more convenient, easy to implement model general assembly quick update to complete a series of products and product variants rapid design

Meter, need to adopt NX systems engineering approach to product design NXWAVE technologies.

The technology originated in the body design, successfully resolved the complex product design product-level parameter-driven problem, you can control at the product level

design components for product design teams work in parallel to provide a good environment. The conceptual design and detailed design

Change from beginning to end throughout the entire design process, so that the definition of the product design, control and evaluation become possible.

Systems engineering approach with top-down design approach is similar, but uses a modular design techniques, will be decomposed into a large complex product overall control

structure and a number of subsystems that have relevance to avoid too large assembly structure. As shown NX systems engineering approach for the introduction of

The PE jaw crusher digital product template design plan. According to the crusher structure, function, and various parts of the connection between the PE jaw crusher products

into fixed jaw, moving jaw, rack unit, adjusting device, protective equipment and other accessories 6 large modules.

By the overall design of the crusher general arrangement can create an overall control structure design, including the location of the plane of each module, crusher length,

width, height size information; the system can re-establish their respective subsystems, such as moving the jaw subsystem jaw, eccentric shaft

Department, etc., you can create sub-sub-control structures, such as the moving jaw child control structure may include the location of the eccentric shaft centerline, moving

jaw sketch plane moving jaw mounting location, etc.; pairs do not need to re-subdivision of the subsystem individual parts can be connected through product design information

related to

Associated published methods for various parts of the structure of the detailed design.

Jaw crusher systems engineering - engineering application module analyzes three examples shown that PE jaw crusher rapid design system called boot-style menu. For the

development of PE jaw crusher rapid design system being PE600900 jaw crusher digital model updates.

PE jaw crusher rapid design system menu PE600900 jaw crusher rapid design engineering practice shows that the system can achieve PE jaw crusher series products rapid design.

Enter the different types of products in the respective engineering parameters, the system can

1015min complete the product automatically update the design three-dimensional model, and automatically update the line with GB, just a little modification can be used to guide

production output of two-dimensional drawings.

Hydrocyclone separation efficiency increases with the increase of the overflow pipe insertion depth first and then there is a decreasing trend. Different overflow pipe insertion

depth cyclone, the separation efficiency increased with the increase of the particle diameter increased, but when the separation particle size exceeds 60m, the separation

efficiency drop will occur

Tendency to be lower. With overflow pipe insertion depth increases, the cyclone separation size increases, the separation accuracy.

Steady cement curb quality material crushing disposal

Production process of cement stabilized layer aggregates processing process is generally: Cleanup Ishiyama topsoil → rock blasting into rubble → feeder → jaw crusher →

crusher → vibrating sieve machine → products. In the above process, because the feeder is loaded rock blasted open mouth

The stone tablets, which contain a certain soil, therefore, must be feeder and jaw crusher added between energy screening 10cm below the soil and impurities shaker to ensure

access cone machine stone clean. In addition, the jaw crusher and impact crusher with material storage increased between

Warehouse, serves two purposes: First, to improve production efficiency; second is to ensure supply of stone to stone crusher balanced and stable, thus ensuring the finished

material particle shape, particle size  Feeding equipment  distribution stability; Third, in the jaw crusher and storage silos installed between the vibration sieve machine, jaw crusher out from

the rubble sample 3

~ 5cm gravel into the storage silos, to the crusher, because the gravel specification over the General Assembly reduced back-breaking production efficiency; too small to make

the file without counterattack broken into particles below 31.5mm excessive, resulting in aggregate flakiness of the increase; Fourth, in order to control aggregates containing

powder

Volume, need to be installed before the crusher plant manufacturer dust removal equipment, vibrating sieve machine belt outlet installed dust removal equipment. Therefore, aggregate processing

process as shown.

The main control aggregate index selection flakiness content, the key sieve throughput, 0.075mm aggregate throughput as the primary control targets. And in the following three

aspects of the file aggregates as the main technical requirements: flakiness content of aggregates volumes flake content to meet regulatory requirements

≤ 20.0%), and the smaller the better; each key sieve throughput at 90% to 100% range, as far as 95% for the control objectives, acceptance criteria can be set at 91% ~ 99%;

clay content the smaller the better, to meet regulatory requirements (specification requirements: clay content ≤ 5.0%).

Aggregate mix design process quality inspection with qualified aggregates, can be done on optimum design, draw conveniently situated and linear continuous smooth gradation

curve, and the design curve does not change with different batches of screening results change significantly. Aggregate processing quality of the construction test set

Standardized materials processing technology can effectively control the aggregate gradation variability. Inspection during construction phase, should further examine the scene

of cement stabilized layer mixture gradation variability. In the actual construction, should mix washing screening results to test.

Aggregate mining and processing according to the above process, in Yangyang high-grade cement pavement two stable layer aggregates production, has been carefully investigated,

such as the one shown with a production line, and its application in carp collapse quarry, production that could also apply to cement stabilized subbase and base layers 4

Sizes of stone, were: 22 ~ 29,11 ~ 22,6 ~ 11,0 ~ 6mm. In the gravel production line to build and debugging.

Aggregate processing of the main control indicators test aggregate principal control indicators were: flakiness content, the key sieve throughput, 0.075mm throughput from Table

4 to 6 gives the relevant data for each control indicators point of view, the quarry produces aggregates meet major technology to

Requirements.

Aggregate processing quality construction than design verification aggregate processing quality addition to the mixing ratio test, but also in the construction process to

further test the cement stabilized soil gradation variability. Obviously, the "Highway Engineering Aggregate testing procedures (JTGE42-2005)" in the aggregate mixes screening

Test is appropriate. For cement stabilized base, base, respectively, the number of 100 samples, statistical results see which mixture gradation variability through the sieve

with the coefficient of variation of the rate to characterize, from a statistical point of view the results in the construction process, the mixture gradation always consistent

with the design grading.

Conclusion (1) Cement Stabilized Aggregate processing layer lies the key sieve selected, when the base, base with aggregates processed simultaneously, the key sieve may be set

for 4.75,9.5,19,26.5 mm, machining vibration sieve is 6,11,22,29 mm, and debug, and monitor back plate

The gap between the hammer and the board; (2) of its respective set of specifications corresponding to the key material should sieve passing rate control objectives can be

critical in the processing rate of 95% through the sieve is controlled to 91% acceptance 99% of the standard.

Parse looking for new large-scale multi-pole rotor crusher maintenance

Analysis of the problem should first consider the possibility of rotor balancing, balancing a problem if the inertial force generated by the spindle bearings are very

destructive. But when you have replaced the hammer rotor, the rotor static balance well after the operation did not produce large vibration, rotor running soon,

Bearing fever more serious (test temperature exceeds 90 ℃). Bearing lubricant used is molybdenum disulfide grease lubrication amount in full compliance with the requirements.

All of the above possible causes are ruled out, probably due to bearing selection and assembly size mismatch caused.  mining screen

Analysis of the problem due to double rotor crusher two rotor speed higher than the general level P0 22332 bearing speed limit and withstand heavy impact loads, bearing

frictional heating operation, the temperature is higher than the journal bearing inner and outer ring temperature above bearing, bearing operating

Radial clearance decreases friction and heat intensified, bearing temperature rose sharply, molybdenum disulfide grease to melt outflow, eventually leading to bearing failure.

Measuring existing bearing bore size Φ340-0.01-0.046, standard P0 grade 22332 bearing diameter size Φ340-0.036, this tolerance with a maximum amount of interference is 0 - (-

0.046) = 0.046mm, the maximum gap to-0.01-(-0.036) = 0.026mm, when the bearing

Differential temperature difference t = 60 ℃ (bearing operating temperature up to 80 ℃), the coefficient of thermal expansion of the bearing material α = 11.2 × 10-6 / ℃,

the amount of expansion bearing outer ring outer = Φ × α × t difference = 340 × 11.2 × 10-6 × 60 = 0.228, the thermal expansion of the bearing inner ring inside = Φ ×

α × t difference = 160

× 11.2 × 10-6 × 60 = 0.108. Since the bearing seat is made of cast steel parts processing, thickness weight, better thermal conditions in the bearing, which is far less than   vibrating screen design

the amount of thermal expansion deformation of the bearing inner and outer rings of thin thermal expansion. Bearing outer ring of the bearing hole size by size limitations, and

bearing inner heat

Swell, causing the roller bearing radial clearance is reduced, roller bearing inner and outer rings with film thinning, increased wear and tear, the rotor speed is over P0 level

22332 bearing speed limit, which requires a greater radial rotor bearing clearance, this contradicts with the working conditions, resulting in

Rotor bearings running soon, bearing temperature increased sharply, the loss of molybdenum disulfide grease to melt, causing the bearing raceway bearing failure caused by burns.

Improvements directly related to the rotor bearing temperature changes due to double rotor impact crusher withstand heavy shock load cycle, the rotor bearing temperature change

is directly related to the normal operation of the whole equipment should be used in a large radial clearance of the bearing, while bearing bore Boring dimensions examinations

Regard to the normal operating temperature of the bearing caused by changes in amount of thermal expansion, to prevent the bearing temperature rise sharply.

Bearings used model 22332/C3, bearing tolerances boring should Φ340G7 (+0.075 +0.018). Such tolerances can guarantee a high operating temperature conditions, the bearing radial

clearance appropriate to ensure the roller bearing oil film thickness, to prevent the roller surface

Damage caused by bearing failure.

When the rotor running for some time, the working temperature rises caused by axial thermal stretch, requiring non-drive end bearing and rotor bearing outer cap should be left

between 1mm gap to prevent axial thermal expansion causes the bearing radial clearance is too small .

Ensure static and dynamic balance 2PF1010 rotor rotor mass, high speed, if the rotor imbalance occurs, there may be great vibration, resulting bearing load increases, increased

wear and tear. Therefore, the rotor balancing equipment operation is one of the most important conditions. In the production process,

Impact rotor balancing performance is a major factor board hammer, during assembly, the same weight should be mounted on the rotor plate hammer symmetrical position, the

installation is complete, turn the rotor, the rotor static balance observe whether requirements.

Mainland-based mineral mining crushing system default search and practice

Belt Conveyor closed. The conveyor belt conveyor after crushing ore, due to tape unloading, ore feed point by squeezing, shock, induced a lot of dust, while the tape under the

action of the roller bumps, dust raised over the tape, so you want to be sealed tape , taking into account the

Production and maintenance needs and save material, the use of single-layer cover airtight manner tape must be tightly sealed. Airtight cover and tape activities connected with

snap flap for easy sealing cover tape recovery after maintenance.  Dry vibrating screen

Round vibrating screen closed. Screening plant closed circular vibrating screen design uses locally confined, closed volume under the hood suction feeding height, particle size,

and the size of the different screen surface per square meter screen surface suction volume 8001200m3 / h selected with reference to similar conditions Concentrator dust suction

volume

Selection.

Cone crusher closed. The material unloading chute or fixed to the crusher cloth sieve disc, the dust with the dust material into the chute and induced air portion into the

crusher, and the other after hours of shock cloth spread upward, so the cone crusher feed port and the lower unload  coal mining machine

Discharge port shall be sealed suction, consider beneficiation process conditions, the cone crusher feed opening located closed suction hood, its suction volume reference to

similar processes or depending on the device type selected.

Suction hood design. In order to improve effectiveness and reduce the amount of exhaust cleaning, should take effective measures to prevent the spread of dust, and to dust cover

dust diffusion regions as close as possible. Dust hood exhaust pipe should be provided in the center of the diffusion region of dust, cover the mouth area and the exhaust pipe

area ratio

The maximum is 161. Determine the appropriate vacuum wind is conducive to effective trapping dust, but not so large particulate dust settling in the wind pipe, clogging pipes,

affecting dust effects.

Tape by feeding dust exhaust volume exhaust volume point Q is calculated as: Q = K1K2Q1 + Q2, (1) where, Q is the amount of dust exhaust point, m3 / h; Q1 for the material into

the whereabouts of the wind-induced , m3 / h; Q2 to make tape sealed hood to maintain a certain negative pressure is not tight crevice by the inhalation

The air flow, m3 / h; K1 correction factor for the material; K2 into the air amount correction coefficient is. Therefore, the calculation of the total crushing plant dedusting

unit air volume 26000m3 / h; screening dedusting unit total air volume 33000m3 / h.

Precipitator according to the actual situation of the small mill, wet dust removal system selection, screening and dedusting system design uses WSCII3.0 a vibrating wire

scrubber units, air volume required to meet the total amount of wind resistance 12001500Pa, water consumption 1215t / h ; crushing dedusting system selected

WSCII2.5 a vibrating wire scrubber units, air volume required to meet the total amount of wind resistance 12001500Pa, water consumption 1012.5t / h.

Blower fan total pressure calculation formula: Hf = (k1h + hc) k2, (2) where, Hf for the fan total pressure, Pa; h for the system piping resistance, Pa; k1 additional factor for

the resistance (1.151.2); hc is the dust resistance, Pa; k2 negative difference for the fan total pressure coefficient (1.05).

Fan flow calculation formula: Qf = k3k4q, (3) where, Qf the fan flow, m3 / h; q for the system exhaust volume, m3 / h; k3 for the system air leakage coefficient, k3 = 1.101.15;

k4 as dust Air Leakage coefficient, k4 = 1.10. According to calculations of the fan model G473119D; speed

1450r/min; equipped with a motor model Y225S4; motor power 37kW; air volume range 2910535052m3 / h; pressure range 26282440Pa.

Test results dedusting system is running, a small mill dust production point and the external environment dust concentrations significantly reduced. Dust dust production system

operating points before and after the dust concentration test results.

Luo river small mill job site dust concentration test results detecting dust concentration / (mg/m3) dust before the dust 8.003.20 after jaw crusher jaw crusher cone crusher

drop chute 16.256.30 8.504.33 Cone Crusher blanking off the chute 88.506.703 tape at 9.675.30

Vibrating Feeder drop chute 16.006.704 31.707.002 belt belt belt tail drop chute 26.707.306 12.407.00 environmental protection department of the crushing and screening system

stack emissions dust concentrations were detected, are in line with Integrated Emission Standard of Air Pollutants requirements.

Shaker operation and maintenance is essential

Shaker operation and maintenance is essential, improper operation, is likely to affect the life of the shaker, reasonable maintenance can extend the life of vibrating screen,

vibrating screen This section focuses on the operation and maintenance of explaining to do next.
(1) in the car, the operator simultaneously on both sides by shaker should check the oil level, oil temperature rises too high will cause the exciter or the operating

difficulties, the oil surface is too low will result in premature failure of the bearing.
(2) Check the tightness of all bolts and 8h after the initial work, re-tighten again.
(3) Check the tension of V-belt, to prevent slipping at the start or at work, and to ensure the positive V pulley.
(4) Ensure that all moving parts and the minimum clearance between fixtures.
(5) sieve shall start no load conditions, to be running smoothly after a sieve in order to begin feeding, stop should stop feeding until the screen surface material drained

after shutdown.
(6) should be as close as possible to the chute to the discharge end, and as far as possible uniformly distributed along the full width of the sieve feed, and its direction is   Semi-mobile crushing plant

consistent with the direction of the screen surface material, resulting in the best screening effect. Feeding point to the screen surface is not greater than the maximum gap

500mm, ensuring minimal material impact on the screen surface.
(7) along the material flow direction rotary shaker, an increase in the speed of materials, increase production capacity, but reduced screening efficiency; when the exciter

foresee flow direction is reversed, reducing the material running speed and reduce production capacity, improve efficiency of efficiency  crushing plant

Choice of what type of filtered liquid shaker

What type of liquid used filter shaker?

Filtered milk, fruit juice and other liquid filtration filter filters magazines when they are needed, but this procedure shaker used in two shaker that it? Today we'll introduce

the next, the first consideration is the 450 filter sieve, sieve shaker major work such features: 1, high efficiency, compact and durable design, any powder, mucus class can be

applied.
2, for network easy, simple, easy to clean.
3, mesh is not blocked, nothing more than spread the material.
4, the impurity coarse material discharged automatically, you can automate tasks.
5, small size, can take advantage of space, easy to move.
6, the unique grid design structure. Screen using a long time, changer convenient.

But such a sieve shaker sieve filter diameter 450 commonly known as 450, single screen, output per unit of time is relatively small, it is the best choice for a small amount of

filtering can be considered second choice is vibration sieve, vibrating sieve of this major features: three million vibration screening filter, also known as vibration sieve,   coal vibrating screen

vibrating screen, vibrating screen, circular vibrating sieve, filter. Our factory specializes in producing three million vibration screening filter (vibration sieve) and a

variety of vibration equipment, product design sophisticated, functional excellence, outstanding quality, and versatile.
    1, small size, light weight, easy to move, the direction of the discharge port can be adjusted, coarse and fine material discharged automatically, can be automated or manual

operation.
    2, the screening accuracy, high efficiency, and any powder, tablets, mucus class can be used.
    3, the screen does not block, powder does not fly, the smallest up to 500 mesh sieve (28 micron) filter the smallest up to 5 microns.  vibration screen
    4, the unique grid design (picture style), screen used for a long time, for network easy, just 3-5 minutes, simple operation, easy to clean.
    5, no mechanical movement, Easy maintenance, can be single or multi-use, and material contact parts is made of stainless steel (except for medical use).

Vibration sieve has a diameter ranging from 400-2000, 1-4 layers can be freely chosen, customers can choose according to their actual situation of choice, the food and beverage

industry, or other more specific chemical industry can use stainless steel, other industries do not need special customs requirements, but such a vibrating screen used in the

filtration industry the best choice when the flange vibration motor, rubber parts required silicone products, there must be perforated plates, rubber balls, solid grid.

Pharmaceutical industry requirements for shaker

Pharmaceutical industry requirements for shaker

The pharmaceutical industry and the people closely related to the relationship with the body, so the state of the pharmaceutical industry's requirements are very strict, the   stone feeding machine

pharmaceutical industry for screening materials are very strict, the most basic is the pharmaceutical industry to use vibrating screening equipment must be stainless steel 304

or even 316, does not allow access to some materials magazines pollution, rubber parts, etc. must also meet food grade hygiene standards (silica gel), and hit the pharmaceutical

industry requires screening equipment must pass the GMP production standards. Shaker used in the pharmaceutical area, has very strict requirements, must meet the pharmaceutical

industry GMP production standards, this relationship with drugs called through the sieve will be contaminated. In fact, is not complicated as a screening machine, the so-called

GMP standard, in fact, in the material, which must be 304 stainless steel, the rubber of choice, be sure to select pharmaceutical grade, the device must use alcohol carefully   Feeding machine

before delivery cleaning times, inside the device must be taken, polishing required to be smooth, polished inside and outside the machine, no black spots, no glitches. Handled

by various pharmaceutical manufacturers because different materials, some of the workshop, strict management, some drugs are flammable, so the choice should pay attention to the

motor for different materials, equipment installation and ordinary vibration motor or explosion-proof motors.

Shaker's the difference between ultrasound and infrasound

 
Standard vibrating screen for some of the more special, difficult screening material screening, they often cause some problems such as blocking network, so for some special

materials to use ultrasonic vibrating screen (in shaker plus ultrasonic device). But some customers in the process of inquiry would mistakenly said infrasound shaker. Here I

give you explain the difference between ultrasonic and infrasonic:  coal production line

Ultrasound and infrasound We've all seen the

Ultrasound technology is one of physical, electronic, mechanical and materials science-based generic technologies. Ultrasound technology is through ultrasonic generation,

transmission and reception of the physical process of completion. The ultrasonic beam having a polyethylene, orientation and the reflection, transmission and other

characteristics. By ultrasonic vibration radiation of different sizes can be broadly divided into:

1. Ultrasonic object or physical changes to application of power to said power ultrasound, for example: in the liquid sufficient energy occurs, resulting in cavitation, can be

used for cleaning, emulsion.

2. Use ultrasound to get some information, access to communications applications, said detecting ultrasound, for example: using ultrasonic pulse reflection in medium thickness

of objects called ultrasonic thickness testing.

Ultrasonic cleaning and application:

First, the principle of ultrasonic cleaning

Ultrasonic cleaning is a physical cleaning, the cleaning liquid into the tank, the role of ultrasound in the tank. Because ultrasonic and acoustic vibrations as a density wave

in the communication process, media pressure for change alternately. In the negative pressure area, the forces tearing the liquid and a vacuum bubbles. When the sound pressure

reaches a certain value, the rapid growth of the bubble in the bubble pressure due to the pressure area crowded burst, is closed. At this point, the liquid collision between a

strong shock wave. Although the displacement speed is very small, but the acceleration is very large, the partial pressure of up to several thousand atmospheres, which is called

cavitation.  crushing and screening plant

Second, several factors affect the cleaning effect

    1. Vs. frequency: Average frequency gets low cavitation effect is more obvious, but the noise is relatively high for the object surface is relatively flat objects. The

higher the frequency, the worse the effect of cavitation, but the noise is relatively low, for blind holes efficient and more porous objects and electronic crystals.

    2. With the temperature: 30 ℃ -50 ℃ generally medium temperature cleaning works best.

    3. With sound intensity related to: Depending on frequency, intensity general election in 1-2w/cm2 so.

    4. Related with the cleaning fluid: In general, the lower the viscosity of the cleaning liquid containing gas is higher, the better the cleaning effect.

    5. And depth of the cleaning fluid on the position of objects to be cleaned.

   Third, ultrasonic cleaning in a variety of fields of application

    Because ultrasonic cleaning itself has other physical or chemical cleaning cleaning incomparable superiority, it is widely used in service industry, electronic industry,

pharmaceutical industry, laboratories, mechanical industry, carbide industry, chemical industry and many other fields, the following individual industry brief.

    1. The application in the service sector.

    Daily production, glasses, jewelry can be cleaned using ultrasonic, fast, no damage, large hotels, restaurants use it to wash dishes, not only the cleaning effect, also has

a role in killing the virus.

    2. The application of ultrasound in the powder industry

    As we all know, to get particles of different sizes, is placed in the ball mill for crushing material, after screening of different specifications sieve layers obtained.

After prolonged use of a sieve, sieve will be blocked (such as diamond mesh), using other methods brushing will destroy sieve, and the result is not satisfactory, after many

manufacturers test, ultrasonic cleaning, is not damaged sieve and top sieve particles are recovered completely blocked.

    3. The application of ultrasound in the pharmaceutical industry

    Ultrasonic cleaning technology through the application of a number of pharmaceutical companies are widely used, particularly for vials, oral liquid bottles, ampoules,

infusion bottles as well Dingjijiaose cleaning, cleaning of natural rubber plug, it has already got approval. For bottles of cleaning is the use of ultrasonic cleaning

technology instead of the original brush machine, it passes flip water, ultrasonic cleaning, rinse inside and outside, the air dry, flip and other processes and achieve.

    4. Ultrasonic cleaning of the filter

    We know that no matter what kind of material filters or whatever purpose filters, used for some time, will reduce the permeability of the impurities caused scrapped,

ordinary filter can lower prices, but for the chemical industry, a only import filter, the price of nearly million, abandoned a pity that we developed in cooperation with other

research institutes ultrasonic filter cleaning machine, using shaped ultrasonic cleaning machine, which can put more than 1KW energy concentrated in the 200 × 20mm2 radiating

on ultrasonic intensity, can quickly clog removal, while equipment using anti-filtering device, as long as you wave the core, we can provide you with complete cleaning device.

(The filter device of a washing time is 10-15 minutes). For PP cotton filter, activated carbon filter, ceramic hollow fiber membrane cartridge filter.

   5. Ultrasonic cleaning of metals

    As we all know, the metal bars by extrusion into the wire, the metal wire is often a layer of carbonized outer membrane and oil, acid cleaning, or other cleaning methods, it

is difficult to remove dirt (in particular, the whole plate wire), ultrasonic washing machine is a wire According to the actual production needs and design of a continuous wire

walking, efficient cleaning equipment, rough wash part by cleaning fluid storage tank, transducer, circulating pumps, filters and matching piping system components, wire rough

cleaning by ultrasonic washing fine , and then after drying, thereby to complete the cleaning process. Integrated control package of equipment, simple, easy, effective, widely

used tantalum wire, tungsten wire, molybdenum wire, niobium wire, copper wire (insulated paint coating before) and other metal wire.

    6. Ultrasonic cleaning technology in phosphate processing applications

    Product spraying pre-treatment process is very important, the general use of the traditional process of acid treatment of the workpiece, severe environmental pollution, poor

working environment, meanwhile, the biggest drawback is that the structure of complex parts residue after acid pickling rust is difficult rinse. After spraying the workpiece,

the time is not long, along the crevice corrosion phenomena occur, destroying the coating surface, seriously affect the appearance and internal quality. Ultrasonic cleaning

technology applied to the coating pre-treatment, not only make the surfaces and crevices in the dirt quickly falling off, and spray coating parts firm will not return to rust

layer.

    Ultrasonic cleaning can be used in all walks of life, the above is only representative of several industry applications, as well as many new industries and fields can be

used ultrasonic cleaning, looking forward to the general use of units and manufacturers to jointly develop exploration.

    Ultrasonic thickness and application

    In the industrial field of ultrasonic thickness measurement is a mature high-tech, its biggest advantage is the detection of safety, reliability and high precision, and it

can be detected in the running state tour. Ultrasonic thickness gauge by the working principle: There is resonance, interferometry and pulse reflection method.

    Several, due to pulse reflection method does not involve resonance mechanism, with the measured surface finish is not close, so the ultrasonic pulse method thickness are the

most popular kind of instrument.


  1. Works

    Ultrasonic Thickness host and the probe has two main parts. Host circuit consists of transmitter, receiver circuit, counter display circuit of three parts, high pressure

generated by the shock wave transmitter circuit excitation probes, ultrasonic transmit pulse generation, pulse reflected by the dielectric interface after receiving circuit

receives, through the microcontroller counting process, after the thickness of the liquid crystal display value, which is based on sound waves propagation speed in the sample

multiplied by half of the time through the sample and obtain a sample thickness.

    I plant operated by HT Series Super Shiba thickness, the introduction of foreign advanced technology, based on the use of SCM technology developed a low-power low limit

Pocket intelligent measurement instruments, not only have different material thickness measurement instruments, And a single measure steel, ultra-thin, while supporting high

thickness probe can be.

    2. Gage applications

    Since ultrasound is easy to handle and good directivity, ultrasound measurement of metal, non-metallic material thickness, fast and accurate, non-polluting, especially when

only one side can touch license occasions, can show its superiority , widely used in a variety of sheet, pipe wall thickness, boiler vessel wall thickness and localized

corrosion, corrosion of the situation, so the metallurgy, shipbuilding, machinery, chemicals, power, atomic energy and other industrial sectors of product inspection, safe

operation of equipment and modern management plays a major role.

    Ultrasonic Thickness Gauge Ultrasonic cleaning and ultrasound technology is only part of the application, there are many areas can be applied to ultrasound technology. For

example ultrasonic atomization, ultrasonic welding, ultrasonic drilling, ultrasonic grinding, ultrasonic polishing, ultrasonic motor and so on. Ultrasound technology will be

more widely used all walks of life.

    The application of infrasound from the 1950s, and gradually widely valued by the people. Infrasound application prospects generally have several aspects:

    (A) the study of natural phenomena through infrasound generated by the properties and generating mechanism, more in-depth study and understanding of the characteristics of

these natural phenomena and laws. For example, the use of infrasound generated by the aurora, auroral activity can be studied law.

    (2) using the received measured infrasound generated by the sound source, the sound source can detect the position, size and study other properties. For example, by

receiving nuclear explosions, rocket launchers or typhoon generated infrasound to detect infrasound source for these parameters.

    (3) prediction of natural catastrophic events. Many disastrous natural phenomena, such as volcanic eruptions, tornadoes, thunderstorms, typhoons, etc., before they occur may

radiate infrasound, people likely to use these precursory phenomena disaster prediction and forecasting of these natural events.

    (4) infrasound propagation in the atmosphere, are vulnerable to the impact of media atmosphere, it winds in the atmosphere and temperature distribution and other factors are

closely linked. Thus, by measuring the natural or artificially generated infrasound propagation characteristics in the atmosphere, some large-scale meteorological detect the

nature and regularity. The advantage of this method is that it can be for a wide range of atmospheric continuous detection and monitoring.

    (5) by measuring infrasound and other fluctuations in the atmosphere result of the interaction, the detection characteristics of these activities. For example, in the

ionosphere plays the role of the acoustic wave propagation under the marching interference, you can determine the characteristics of infrasound, further reveal the laws of

ionospheric disturbances.

    (6) and other organisms is not only able to produce certain reactions infrasound, and he (or it) will be issued certain organs of their weak infrasound. Therefore, we can

use these sub-sonic characteristic determination to understand the human body or other biological activities of the corresponding organ.