SU1609480A1 - Centrifugal multistage grusher - Google Patents

Abstract

This invention relates to centrifugal multi-stage crushers. The purpose of the invention is to reduce energy consumption. The crusher has a chamber in which a shaft with accelerating disks and jacking boards are placed. A working disk and a conical distribution plate, rigidly connected to each other and spring-loaded along the shaft, are installed above the lower plane of the accelerating disk. Above the plate is installed boot ring. Depending on the amount of starting material, the height of the working channel automatically changes between the working disk and the cover ring. 2 Il.

Description

The invention relates to centrifugal multistage crushers for grinding the initial grain and mineral components of mixed feeds, raw materials of powder metallurgy, building materials, mineral fertilizers, and other materials. It can be used in agriculture, construction, mining, chemical and other industries.

The purpose of the invention is to reduce power consumption.

Figure 1 shows the crusher, times; figure 2 - section aa in figure 1,

Multiple crusher centrifugal crusher Contains a chamber 1, in which the grinding steps are placed one above the other; Chamber 1 has a loading 2 above and 3 discharge openings from below. Vertical shaft 4 is installed in the chamber. Each grinding stage contains an accelerating disk 5, a conical breakaway deck 6, conical screening sieves 7 passing into the sloping boards 8. In the discs 5 above the bottom plane 9 there are installed working disks 10 with slots under the vanes 11, the vanes 11 are fixed; - en between the lower plane 9 and the cover ring 12 of the accelerator disk 5. C. The working disks 10 are rigidly connected with conical distributor plates 13, increasing towards the top of the diameter. Working disks 10 with plates 13 are fixed on spring-loaded springs 14 along shaft 4

 15 ° bushing Above the distributor plates 13, loading rings 16 are mounted, rigidly connected to

; The plane 9 of the acceleration disks 5, the distribution plates 13 form with the loading rings 16 - an annular gap, the width of which can

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depending on the amount of material fed to the grinding. Against the annular slots, speed dampers 17 are installed in each degree of grinding, made in the form of conical rings with a corrugated inner surface increasing to the bottom of the diameter.

Between the niini plane of the 9 acceleration disks 5 and the working disks 10 in front of the front and rear end blades 11, elastic sealing rings 18 are installed.

The acceleration disks 5, the working disks installed in them 1 €, the distribution plates 13, the loading rings 16 mounted on the crusher shaft constitute its rotor. The vertical shaft 4 is mounted on bearings which are fixed on the upper 19 and lower 20 support plates of the camera 1.

Centrifugal multistage crusher works as follows.

When starting the crusher from the drive, the vertical shaft 4 spins up and along with it the acceleration disks 5, distribution plates 13 and loading rings 16 rotate at the same angular velocity.

The linear speeds of the peripheral part of the acceleration disks differ depending on the location of the grinding stages and their sizes. The working disks 10 are pressed against the ringing ring 12 of the accelerating disks 5 by means of sleeves 15 spring-loaded on the shaft 4, and the elastic rings 18 covering the vanes 11 between the working disk 10 and the lower plane 9 isolate the non-working height of the blades 11 from interaction with the external air medium. With unloaded grinder

the material to the crusher, the geretized channels between the blades of the 11 acceleration discs 15 do not create an air flow meter, the shaft 4 rotates with a minimum load, the consumption of Jyu energy ,;

When loading the fraction, the material is crushed through the loading opening 2 of the turning pin 19 to the distribution plate 13 of the first grinding stage. Under the action of centrifugal force, the material is ejected into the annular slit of a slug by a distributor plate 13 by a support ring 16, Mass

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the fouling material and the vertical component of the centrifugal force of pressure on the plate 13 shift the plate 13 down with the spring loaded

sleeve 15, sliding on the shaft 4 of the crusher, Takin automatically changes the width of the annular gap between the plate 13 and the loading ring 16, depending on the amount of material to be ground.

The material being processed, coming out of the slot at a significant peripheral speed, hits the speed dampers 17, inhibiting the rotational movement of the material, which then enters the working disk 10 and then into the working channel of the accelerating disk 5, between the cover ring 12 and the working disk 10, Thanks hard connection of the working disk 10 with the distributor plate 13, depending on the amount of material being crushed 5, the section of the working channel of the accelerating disk 5 and the height of the working part of the blades 11 are also automatically equal to the distance hedgehog zu working disc 10 and the covering ring 12. The material is comminuted in the booster disk working channel 5, and when hitting the fender deck 6 at an exit from the working channel. Part of the channel of the accelerating disk 5, the gap between the lower plane 9 and the working disk 10, which is not involved in the work, is protected from air leaks by sealing elastic rings 18.

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After the first grinding stage, a part of the material with certain particle sizes is sifted on the gratings 7 as it moves and is discharged through the loading hole 3. The rest of the pit side 8 enters through the central opening in the loading ring 16 to the distribution plate 13 of the next level grinding. The work of the second and subsequent stages of grinding analogue-first

The automatic change in the working height of the blades in the channels of the acceleration disks in each grinding stage is proportional to the flow of the material to be ground, and sealing the non-working part of the channels eliminates the power loss of the crusher drive to the fan.

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Claims (1)

Claim A centrifugal multistage crusher containing a chamber with loading and unloading openings, a vertical shaft with accelerating disks, the diameter of which in each subsequent stage increases, covering rings, between which and the lower surface of the disks there are blades, baffle decks fixed in the chamber against the accelerating disks, conical sieving screens , characterized in that, in order to reduce energy consumption, the accelerating disk of each stage is equipped with sequentially mounted above the bottom 5 1609480 '6 plane with a working disk with slots under the blades, a conical distribution plate, the diameter of which increases to the top, and a loading ring, 5 and the distribution plate and working disk are rigidly interconnected and spring-loaded along the shaft, and the loading ring is rigidly connected with the lower plane of the accelerating disks, forms an annular gap with the distribution plate, against which in each stage a speed damper is mounted, made in the form of a conical ring, increasing to the bottom of the diameter with corrugated th inner surface, while the blades of the accelerating disks c. the space between the lower plane 20 and the working disk is closed from the outer and inner sides by means of elastic tight rings.