SU1524924A1 - Centrifugal crusher - Google Patents

Abstract

The invention relates to the design of a centrifugal crusher, reduces overgrinding of the processed material. The centrifugal crusher comprises a housing 1 with baffle plates 2, a rotor consisting of a vertical shaft 3 with a disk 4 with accelerating vanes 5 made in the extra-peripheral zone with openings in the form of a grate 6. A disc 4 is made in proportion to the length of the grate 6 a window 7 communicating with the camera installed directly behind the accelerating blades 5. Under the window 7, radially mounted on the disk 4 are L-shaped guides 8. The baffle plates 2 are made in height equal to the height of the accelerating blades 5. The execution of the accelerating blades 5 is 6 grate allows in a separate small stream classes ore with the bulk of the useful component, such as asbestos fibers without subjecting them crushed with large pieces of ore. This reduces overgrinding of the useful component - asbestos fiber and will allow to increase the efficiency of crushing larger ore chunks. 4 il.

Description

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The invention relates to devices for crushing materials, such as asbestos ore, and can be used in the coal, construction industry for crushing coal, gravel or gravel,

The aim of the invention is to reduce the overgrinding of the material being processed.

FIG. 1 shows a centrifugal crusher, vertical section; in fig. 2 shows section A-A in FIG. 1; - in FIG. 3 is a section BB in FIG. 2; in fig. - section BB in FIG. 2

The centrifugal crusher comprises a housing 1 with baffle plates 2, a rotor consisting of a vertical shaft 3 with a disk C with accelerating vanes 5 made with openings in the form of grates 6 on the non-peripheral part of them. In the disk, behind the accelerating blades 5, windows 7 are made for the length of the grate 6, and radial guides 8 are installed below them, made L-shaped. The baffle plates 2 are made at a height equal to the height of the accelerating blades 5. Directly behind the accelerating blades 5 are installed chambers 9 communicating with the windows 7. The housing 1 is equipped with loading 10 and unloading 11 devices.

Centrifugal crusher works as follows.

The source material, consisting of pieces of asbestos ore of various sizes, for example 30 or less, containing asbestos fiber, enters the crusher through the charging device 10 into the center of the rotating disc 3 on the vertical shaft 3. Dispersed blades 5 capture the material, while small its particles pass through the grate 6 and enter the chamber 9, installed directly behind the accelerating blade 5. On the longitudinal wall (along the window 7) of chamber 9 a layer of material is formed, which is held at the initial moment by centrifugal and core Olisova forces, which on further accumulation and compaction serves as a self-lining and forms an inclined surface. On this inclined surface, the selected fine particles of ore with asbestos fiber are transported to window 7 and further to guide 8, moving along which

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a swarm is ejected into the area between the disk with the guides 8 and the crusher body 1. Thus, small classes of ore bypass the crushing zone of large classes — between the fender plates 2 and the paddle blades 5, the damping zone, i.e., does not form on the fender plates 2. small particles of material sticking and accumulating on them.

Large particles of ore, moving along the grate 6, are accelerated under the action of centrifugal force, are thrown onto the fender plates 2. Due to the absence of the damper zone 2 on the fender plates - a layer of small particles material is subjected to a hard impact on the surface of the fender plates 2, which contributes to their effective destruction. The flow of material from the baffle plates 2 (fragmented large particles), falling freely downwards, is encountered with the material ejected from the radial L-shaped guides 8, while the interaction of the material particles with each other is carried out by a non-rigid impact, which in the case of crushing asbestos ore creates for effective asbestos fiber flushing. After the interaction of two material flows, they lose energy and the material is removed from the crusher through a discharge device 11.

Thus, the proposed centrifugal crusher provides effective crushing of ore and reduces overgrinding of the useful component, for example asbestos fiber, due to separate processing of large and small particles of the material by withdrawing a small part of the material from the source material stream for crushing.

Claims (1)

Invention Formula A centrifugal crusher comprising a housing with baffle plates, loading and unloading devices, a rotor in the form of a disc with accelerating vanes having holes, behind each of which there is a chamber with a window installed on the disc, in order to reduce the overgrinding of the material being processed, the holes on the accelerating blades are made on their non-peripheral parts, and it is made with a radial guide, installed on the entire length the height of the fender plates is equal to the height of the acceleration blades. X- / I t "  ABOUT   about 0 Oh oh about FIG.