2013年7月25日星期四

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%.

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