RU2000142C1 - Centrifugal multistage crusher - Google Patents

Abstract

Usage: in the construction materials industry, mining. coal, chemical and paint industries for crushing pieces of bulk materials. SUMMARY OF THE INVENTION: A centrifugal multistage crusher consists of a cylindrical body 1. Loading 2 and unloading 4 nozzles. On the inner surface of the crusher shell there are fixed annular loose shelves 5, between which there are fixed ribbed rings 8. The working body of the crusher is made of a set of accelerating disks 9 with blades 12 mounted on a vertical shaft 10. Internal grooves 7 and vertical reflective rings are made on the annular bulk regiments plate 6. and on accelerating disks - knives 13. 2 ill.

Description

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The invention relates to the field of building materials industry, mining, coal, chemical, paint and varnish industries, and can be used for crushing lumpy bulk materials.

A centrifugal multistage crusher is known, including a casing, inside which there is a vertical shaft with accelerating disks, the diameter of which increases as you approach the discharge opening located in the lower part of the crusher casing. Around the accelerating disks are fender decks made in the form of sieve matrices, the holes of which have the shape of a truncated cone, directed by a large base to the walls of the crusher body 1.

The disadvantage of this device is the low efficiency of the crushing process, because the material is destroyed in the process of impact and abrasion; other processes of destruction (crushing, cracking, stretching) are not carried out in this device. Therefore, to achieve a high degree of crushing of the material, a significant peripheral speed of the accelerating disks is required.

The closest in technical essence and the achieved effect to the claimed is a centrifugal impact mill containing a cylindrical body, on the inside of which there are fixed ribbed rings and pouring funnels to divert material to the inside of the next disk to repeat the grinding process. This is a set of horizontal discs with blades rotating on a teak shaft 2.

This design provides grinding material in the process of impact and abrasion. The efficiency of the grinding process is not high, because other processes of destruction of the material are not carried out at the same time, the ribs on the stationary rings are not enough, therefore the particles of the material can hit their surface directed towards the shaft, at some angle, which absorbs the energy of interaction of the particles with these ribs. Material falling from the funnels on accelerating disks, it does not undergo destruction when interacting with them, it is only again, it is accelerated by the action of centrifugal force. These design flaws lead to the ingress of particles under crushed particles th produ) m inn «emschiyg crusher h ich

The aim of the invention is to increase the efficiency of the crushing process.

The goal is achieved in that in the centrifugal multistage crusher, the accelerating disks are equipped with knives, and the annular bulk regiments are made with internal grooves and provided with vertical reflective plates. Crusher allows you to combine three

0 process of material destruction: impact, abrasion, cracking, which ensures effective crushing of the material.

The presence of knives on the accelerating disks ensures the destruction of the material during

5 his shedding from the annular bulk regiments and interaction with knives.

Particles of material escaping from the accelerating disks are destroyed upon impact on the vertical surfaces of the grooves in the annular bulk regiments, as well as on the vertical reflective plates fixed on these shelves. Grooves and baffles prevent the material from twisting in the flow

5 space crusher, i.e. increase the relative speeds of particles and knives. This allows crushing of the material at much lower peripheral speeds of the working body than in

0 prototype.

The presence of grooves in the ring overflow shelves also provides the convenience of assembly and disassembly of the crusher, as allows moving the working body in a vertical direction5 (after disassembling the bearing units).

Figure 1 shows a General view of a centrifugal multistage crusher; figure 2 is a section aa in figure 1.

0 Centrifugal multi-stage crusher contains a cylindrical body 1, a loading nozzle 2, mounted on the cover 3 of the crusher, a discharge nozzle A. On the inner surface of the shell 5, annular filling shelves 5 are mounted on which vertical reflective plates 6 are mounted and provided with grooves 7. a between the annular overflow shelves 5 are mounted fixed ribbed rings 8. The working body of the crusher is a set of horizontal accelerating disks 9. mounted on a vertical shaft 10, which has two rotation bearings 11.

5 Accelerating disks 9 are equipped with blades 12 and knives 13, The width of the grooves 7 provides unhindered passage of the knives during vertical movement of the working body in case of assembly or p; crusher assemblies

Crusher works as follows.

The source material through the loading pipe 2 enters the working space of the crusher, partially entering the accelerating disk 9, partially to the rotating knives 13 and the overflow shelf 5. The material is accelerated by the centrifugal force on the accelerating disk 9 with the blades 12 and is thrown to the shell 1. Impact The vertical reflection plates 6. The vertical surfaces of the grooves 7, the ribbed rings 8. The material is crushed. Discharged from the annular overflow shelves 5. The material is subjected to impacts of the knives 13 and is effectively ground. Passing successively a series of disks and overfill shelves, the material undergoes multiple interactions with knives 13 and reflective elements 6. 7. 8. This is effectively crushed.

The size of the grinding is mainly controlled by the speed of the working body.

The presence of ribbed rings 8 also provides self-lining of the crusher shell when working with wet, sticking materials.

The design of the crusher provides a reverse rotation of the working body.

Claims (1)

SUMMARY OF THE INVENTION A centrifugal multistage crusher comprising a cylindrical body, inside of which there is a vertical shaft with accelerating disks, annular discharge shelves fixed to the inner side of the crusher body, between which there are fixed ribbed rings, loading and unloading nozzles, characterized in that, for the purpose of increase the efficiency of the crushing process, ragon disks are equipped with knives, and annular bulk regiments are equipped with vertical reflective plates and with internal grooves. - / Hu