Sieve shaker surface

Shaker structure consists of four components , high-frequency vibration motor, one fixed and two grade fixed grizzly grizzly , vibrating springs and chassis . Sieve sieve sieve rate to tiltLinear vibrating screen and anyway , the greater the inclination of the screen surface flow faster.Using shaker principles are: linear vibrating screen , horizontal shaker, shake the sieve, sieve eccentric rotary shaker, round vibrating screen , vibrating screen bananas , probability screen and so on. According toVibrating feeder the different transmission mechanism can be divided into the following categories: eccentric vibrating screen, vibrating screen inertia , self-centering shaker, resonance screen .

Apron feeder features work

Apron feeder features work① Most load start, almost no overload, occasionally with a rated load start, coal hopper Coal vibrating screen up to 70t;② requirements start at zero speed, the speed range of 0 ~ 0.6 m / min, you can manually control the slow acceleration or deceleration, speed 0.3 ~ 0.5m/min use more and Feeding machine stable operation;③ stable operation in the basic stability of the external load, impact small;④ ambient temperature is low, a large dust.

The surface of zhenyuan screen machinery width determines the processing ability of sieving machine

The surface of the screen width determines the processing ability of screen, if the screen wide material through capacity; sieve surface length determines the efficiency ofZhenyuan Mining vibrating screensurface extension, the longer the longer materials through Zhenyuan coal crushingplant, screening more thoroughly, however, long sieve to improve screening efficiency is not significant, but only the excess lengthened screen size.The current screen, the screen length, screen 3.5~4m coarse grained, screening 5.5~5.6m fine, dehydration, de mediated 6.5m.

Screening machine type

Coal-fired power plant boilers burning coal gangue certain percentage of granularity in the coal mines to its uneven particle size, particle size of coal there are qualified majority of particle size, need not be repeated broken. This part of the material generally comprises from about 35 to 75% of the material. Now many domestic Linear vibrating screen equipment. Commonly used screening equipment can be divided into two categories, one is vibrating conveyor type, one is forced to transport type, advantages and disadvantages between the two. The best situationto be root to the parameters noted in the selection of materials.
Sand vibrating screen machine of fixed sieve sieve categories and events, activities, sieves and sieve is divided rotating shaker. They use a fixed sieve grate mounted on top of the import crusher to prevent materials falling into the super-size. Most of the panels folded rotating sieve sieve polygonal or circular cylinder madeof simple structure, long life, but productivity is low, the body heavy, huge, but rarely used.

Vibrating screening equipment uses feb by weight

Vibrating screening equipment use can be divided by weight: mine shaker, light fine shaker, laboratory sieve shaker mine shaker can be divided into: efficient heavy screen, self-centering shaker, shaker oval, dewatering screen, round vibrating screen, vibrating Coal screening machine (4) banana screen, vibrating sieve. Lightweight fine vibrating screen can be divided into: vibration sieve, sieve straight, vertical Crusher machine, ultrasonic vibrating screen, filter sieve shaker can reference series. Experimental shaker: slap sieve, sieve shaker hit the top, the standard test sieve, sieve shaker motor, etc. Please refer to laboratory equipment

Of mine shaker to make reforms to meet the needs of social development

In today's rapidly developing society , in order to survive in the fierce competition down , we must continue to develop and constantly improve , constantly reform , we all know

that survival of the fittest is the natural law society is evolving to survive benevolent. Today, the level of mechanization

Continue to increase, as a production of Linear vibrating screen mine shaker manufacturers, we want to survive in the fierce competition, we must continue to improve themselves and improve . We bid

farewell to the past era of farming , artificial screening era has long gone away from us . We live in

All aspects of the shadow oscillating screen everywhere mine shaker , we clearly understand that only continue to increase, the development will have a better tomorrow .

   China's machinery manufacturing industry has bid farewell to the manufacturing process and equipment obsolete , backward production automation technology , extensive business

management , lack dewatering screen of product innovation and advanced technology, but also in the fast, high quality, low cost , and quality service have greatly improved. As the economy

Increasing levels of people required for the survival of the environment have become more sophisticated , in order to meet people's needs , all sectors must make the appropriate

changes. As people in productive activities essential mine shaker device must also conform to the trend of the times.

How Depending on the nature and process mining vibrating sieve material to selection

Mine shaker from the exciter , pulp distributor, screen frame , chassis , suspension springs and sieve composition and other components . Used in mineral processing , coal ,

chemicals, bricks , food, pharmaceutical , alkali, fertilizer, paper and other industries in a variety of materials dry, wet China Vibrating Screen screening, grading, dewatering operations.

Depending on the production process or production line is especially important to choose a reasonable mine shaker . Major equipment screening equipment used for classification

spiral classifier , mining vibrating screen, vibrating screen manufacturers vibrating screen, circular vibrating screen, vibrating screen, bucket elevator , conveyor , feeding machine.
     Mine has the following performance advantages shaker :
    1 , the vibration transmission link using high quality flexible elastic material , reliable long-term operation ; screening machine for the energy-saving products . Single

exciter power only 0.15kW, mineral commonly used electromagnetic shaker 2420 , the whole power consumption does not exceed 1.2kW / units.
    2 , the screen surface vibration frequency 50Hz, amplitude 0 to 2 mm , the vibration intensity is 8 to 10 times the acceleration of gravity , is generally 2 to 3 times the

strength of the mechanical vibration of the vibrating screen . Screen surface is not easy plugging holes , high efficiency , large capacity . Particularly suitable for screening

particulate powder material . Grading grain

Degree 0.074 ~ 1mm.
    3 , the screen surface by a flexible screen three different components. Polyurethane bottom rope core network to support network , at the laying of wire diameter and mesh

neither identical double stainless steel wire braided composite network . Work online network layer composite , in direct contact with the working material for screening , the

lower composite web

To end network for the transmission of vibration dispersed by force and to ensure that the work of the network of high screening efficiency and long life. Mesh with hooks at

both ends for easy handling and adjustment screen tension . Feeding buffer sieve to make pulp dispersed uniformly distributed , avoid direct punch .
    4 sieve shaker driven by the transmission mechanism for high-frequency vibration , static screen box . Vibration system designed to work in a state of near- resonance ,

vibration machine through support , so that the ground does not bear the basic dynamic load , does not require the system to do basic screening machine installed directly on a

solid flat ground or common

Through the steel platform to work properly.

Electromagnetic vibration feeder common faults and solutions

       When the electromagnetic vibration feeder feeding equipment in one, in the course inevitably encounter various problems .
   
Troubleshooting
    1 power, electromagnetic vibration feeder does not shake
    (2) the noise is relatively large, tune coal production line rectifier or regulator has no effect , or a violent crash
    3 electromagnetic vibration feeder amplitude is small, and not much feeding amount
    4 . Regulator does not work, or weak shock adjustment potentiometer
    5 impulse or clearance work, work is not smooth
    6 Although the production is normal, but the current is large
Analysis of the causes of common
    1 for the first failure , possibly caused by the following reasons : ( 1 ) . Fuse is broken or open circuited ; ( 2 ) . Coil wire shorted ; ( 3 ) . Joints are decapitated ,

SCR is not conducting .
    (2) For the second failure , may have stone feeding machine the following reasons: ( 1 ) . Main springs ( spring or coil spring) fracture ; ( 2 ) . Tank connection with the exciter fork bolts

loose or broken ; ( 3 ) . Gap is too small ; ( 4 ) . Any increase in the weight of the machine
    3 for the third failure , may have the following reasons: silo discharge port design is unreasonable, excessive pressure to bear feeding trough
    4 for the fourth failure , may have the following reasons: ( 1 ) . Rectifier breakdown ; ( 2 ) . Coil wrong polarity ; ( 3 ) . Gap is expected clogged ; ( 4 ) . Plate spring

gap is blocked.
    5 for the fifth failure , may have the following reasons : a coil wire.
    6 Article for failure , may have the following reasons: ( 1 ) . Gap is too large ; ( 2 ) . Line package heat.
Solutions to common problems
    1 for the first failure , the solution is as follows: ( 1 ) . Replace the fuse and coil ; ( 2 ) . A search , replace the coil ; ( 3 ) . Connect fittings, conduction

thyristor . Should check all lines , specific treatment .
    2 for the second fault , the solution is as follows: ( 1 ) . Replace the main spring , and re- tuning ; ( 2 ) . Replace and tighten the bolts ; ( 3 ) . Adjust the air gap

large ( 4 ) Recovery
Machine normal weight.
    3 for the third failure , the solution is as follows : Improved nesting site structure , changing the discharge opening chute tilt angle , eliminating positions pressure

effect .
    4 for the fourth failure , the solution is as follows: ( 1 ) . Replace rectifier ; ( 2 ) . Grafting coil ; ( 3 ) . Clear materials to ensure the air gap ; ( 4 ) . Improve

housing sealed to prevent debris falling .
    5 for the fifth failure , the solution is as follows : Fix wires , replace the coil .
    6 For the sixth failure , the solution is as follows : Adjust the air gap size.

Vibration sieve matters noted during transport

Vibration sieve again before shipment need to do is
1: Check the accessories are complete
2 : Check the screws are sand vibrating screen imprisoned
3: Check the transport support is secured , especially this one , because a lot of time in transit , since transportation support will cause damage during transport, sport

springs with crane swinging back and stone screening machine forth , there will be a spring crooked , broken, lost , etc. phenomenon . Affect the normal use
4: Upon arrival, the first look at the transport support is intact. Then twist off the screw , remove the support, check the parts , springs , power use

Spiral vibration hoist works

Spiral vibration hoist is one of the products mature plant , spiral vibration hoist the main working principle is :
Vibrating conveyor moves through the micro- throw the material in the upwardly inclined trough mechanical transport and heat treatment processes , such mechanical and thermal

treatment simultaneously in a manner sieving machine more and more in industrial applications . Compared with the linear vibrating conveyor , screw conveyor

Conveying path is not straight , but a spiral . Under the established slope around the central axis of the spiral tower to produce the corresponding torsional vibration ; making

loads along the spiral upward. The linear vibrating conveyor , the conveyors in each point of the plane of the acceleration acting on the product

Are almost the same degree , screw Mobile crushing plant conveyor according to the magnitude of the acceleration degree of the different transport radius corresponding changes . Therefore its

operating conditions of the different diameter of the screw conveyor have a greater impact ; other words , this type of delivery of the form that is in the area to its maximum

tilt and

The minimum acceleration .

Crusher to reduce sulfur emissions in the protection of the environment is essential

With the launching of economic , scientific and technological progress, the quality of the grinder in progress in increasing its product range , its usefulness also been expanding . Currently, the grinding machine can be used for cement , sand , coal and other building materials manufacturing , construction waste can be used for re- grinding applications that can be used in metallurgy,

Chemical and many other industries in the country 's economy was unfolding play an irreplaceable role, especially for Feeding machine of coal thermal power plants can effectively reduce sulfur emissions.

Home from the factory outside of electromechanical domestic appliances , which are inseparable from the same power support. Electricity is an extraordinary human intelligent crystallization , on behalf of the human innovative natural glory attainments. After the people's China Vibrating Screen access to electricity There are many ways , for example, thermal power , hydropower , solar power

, Nuclear power and so on. For my country, the overall construction of thermal power generation in the occupation in the dominant position , the proportion of up to two-thirds . Although thermal environment , skill requests is low, but also the most significant environmental pollution , thermal power plant emissions of sulfur dioxide, nitrous , etc.

Gas comprehend significant impact on people's body weakness . Desulfurization of thermal power is the power plant after the environmental protection departments have rules for each hard targets , and mill for crushing coal thermal power plants can effectively reduce sulfur emissions. Coal crushing industry supply careful slight serve , especially in the

Machinery and equipment in daily use , conservation and protection of thermal power plants to reduce sulfur emissions from industry supply meticulous serve and protect the effective application of the product .

Learn vibration motor applications and forms of exercise

Vibrating machinery and equipment has been using vibration motor as a simple and reliable and efficient power. Body vibration of the vibration motor mounted on a different

combination , can produce different vibration locus , thereby effectively to perform tasks . Vibration motor can generate a circular , oval, linear

, Complex movement.
Linear Vibration: vibrating body ( cabinet vibration and material ) vibration trajectory in the horizontal plane and the vertical plane of projection are straight , their form

is called linear vibration vibration . This type of shaker to be known or Semi-mobile crushing plant sieve . Connect two of the same type vibration motor

Vibration equipment installed in the body with the two vibration motor shaft in a position parallel to each other , running two vibrating motors turn in the opposite , then the

inevitable two vibrating motors running simultaneously , the body produces linear vibration .
Circular or elliptical vibration : vibration of the vibrating body the projection on the horizontal plane trajectory is a straight line , and in the vertical plane of projection

is a circle or an ellipse , its form is called circular or elliptical vibration of vibration . Such Vibrating feeder to be known round or circular vibrating sieve shaker .

Usually a vibrating

Motor is mounted on the body of the vibration machine can produce this movement. Round or oval vibration motor vibration occurs in the plane perpendicular to the shaft , in the

form of the vibration motor and the machine to see the relative position of the center of gravity .
Complex Vibration: vibration body vibration is generated by two excitation systems , the vibration form called composite vibrations. Generally have dual composite and double-

width composite forms. Some special properties of vibrating screening equipment , using two different models of different speeds vibration motor,

Dispensing device for screening by the feed end and a discharge end , so that by the feed -side rendering large amplitude low frequency vibration , while the discharge -side

rendering of small amplitude high frequency vibration , the middle screening equipment overlapping two kinds of vibration, the screening equipment play a more effective

screening effect.
Rotary Vibration: The vibration of the vibrating body the projection on the horizontal plane trajectory is a circle or an ellipse , in the form of vibration is called spin

vibrations. Such shaker to be known vibration sieve . Rotary vibration can be divided into flat spin type vibration , vortex -type rotary type vibration vibration and complex

three forms . When the vibration of the vibrating body

Trajectory in the vertical plane is a horizontal projection of a straight line , its vibrations called a swing -type vibration ; when the vibration in the vertical plane that

the trajectory is an oblique projection of a straight line , its form is called a scroll-type vibration vibration ; when vibration of the vibrating body in the vertical plane of

projection trajectory is a circle or

Oval , its vibrations called complex spin type vibration . Usually consists of vertical vibration motor vibration equipment generates spin excitation vibration , the vibration

form then look at both ends of vertical vibration motor excitation depending on the angle block . Also be two foot mounting type vibration motor vibration equipment were put in

on both sides , so that

It was for a set point of the shaft , the vibration of the vibration device will also produce spin .

Precautions when using the feeder

Vibrating feeder is widely used in sand making production line, high crushing production line feeding equipment for the massive, granular materials supplied to the continuous

quantitative jaw crusher , sand vibrating screen machine making machine , Raymond Mill mining machinery such as crushing , grinding machines , in order to achieve fast material

Fast and efficient production and processing. In the use of vibrating feeder , pay attention to the device structure , connecting parts , the work environment affects the

service life of the equipment , the various factors affecting the inspection and commissioning , to avoid feeder because there is no regular maintenance resulting in life shrink

Shorter.
a. in the feeder after the initial installation , the equipment grounding protection should be re- checked debugging. Feeder on the ground to ensure the Sand vibrating screen insulation resistance of

the rated voltage, power, current parameters are the same , depending on the requirements of the appropriate vibration motor voltage insulation resistance

Table and to keep the feeder insulation resistance at work did kV voltage not less than 1MΩ.
b. feeder in the course of the event of damaged parts need to be replaced, the device must be strictly in accordance with the instructions , select the device model consistent

with the feeder parts for reinstallation , must not disassemble replacement is not supporting parts caused by equipment operation

Failure , and even cause equipment downtime and more serious damage occurs .
c. feeder before work to check the exterior cracks , fasteners bolts are tightened , with or without loosening . Rotation of the vibration motor bearing structure inspection and

adding lubricant agent , lubricating agents to ensure adequate cleaning , vibration motor cooling device operation

Flexible turn the motor ventilation is good. Avoid the feeder links caused by loose bolts shortened life .

Will cause the sieve shaker linear fracture occurs Factors

    linear vibrating screen mesh rendering fracture, generally due to vibration sieve mesh without tension (or pull tight) formed under the state support bar and mesh sieve box

between the secondary vibration caused by the vibrating Sand screening machine mesh a regular linear fracture, several possible causes of this damage is

:
Screen size is too long, causing the tensioning screw Zhang is not tight; ZS vibrating sieve machine tensioner problems, tension plate and screening machine is not complete, the

tension plate (hook) wear thin or deformed; multi-linear vibration screen mesh crimping shape and size do not match with the tension plate; sieve welding fracture conductivity

Structural damage caused by the sieve; rubber pad free of wear or when; mesh sieve machine design or structural defects; efficient linear vibrating sieve box support bar below

the screen, which has some support bar and mesh spacing; shaker machine four spring stiffness uneven; shaker machine amplitude is too large

And so on.

Some brief screening machine part parameters

        Screening machine test items according to the purpose and requirements of the different detection, you can choose different content for testing. For example, the factory

test must include measuring the amplitude of the vibration frequency, bearing temperature, noise, make sure the oil level and lubrication, and some factories also measured motor

power and

The natural frequency of the China Vibrating Screen. Screening machine parameters and performance testing, involving vibration measurements and strength measurements specialized areas. If

you need to make in-depth analysis, we can see this specialized books and literature. Here, only the screening machine several main parameters and performance testing for

A brief description.

        Brand cement production lines amplitude measuring the amplitude of the measurement method is the simplest method is widely used. Measure linear trajectory amplitude.

Usually in a thin aluminum plate engraved with a vertical line and a diagonal triangle formed or constituted by the two slashes

Trapezoid. What is the distance between two lines from small to large, or from large to small; amplitude value as the distance of the size of intermediate values, the distance

marked by an integer size. When the measured amplitude, the amplitude of the card affixed to the screen box on the side, with the screen box vibrate together, to see in the size

of the intersection, ie

The amplitude value (double amplitude).
   
       Cement or similar mechanical measuring circle circular trajectory amplitude. It is a thin aluminum plate engraved with if in different diameters and marked with size

circle. When measuring vibration, saw two circles tangent to that circle, is the amplitude value (double amplitude). This and double roll crusher

There are differences. The amplitude of the card, can be used as vibrating screen manufacturers machine measurement of linear motion amplitude.

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.

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.

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.

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.