RU1784271C - Rotary crusher - Google Patents

Abstract

Use: for grinding solid lump materials in the mining and construction industries. SUMMARY OF THE INVENTION: A rotor crusher comprises a housing, inside of which a rotor in the form of a hollow ring is mounted on a vertical shaft, the outer and inner walls of which are interconnected by vertical partitions. The inner wall of the ring is connected to the shaft by means of radial rods. The rotor is equipped with beats mounted using axles attached to the opposite walls of the rotor ring. An annular classifier of crushed material is installed under the rotor. 3 ill.

Description

The invention relates to devices for grinding solid lumpy materials and can be used in the mining and construction industries.

A grinding device is known, comprising a stepped housing, inside of which a rotor with hammers is mounted on a vertical shaft. The blades mounted under the hammers 1 are fixed on the shaft.

The disadvantage of this device is the large metal consumption and increased dynamic imbalance, which creates vibration and increased noise during operation, and the finished product is obtained too uneven fractionality.

The closest technical solution is a device comprising a housing inside which a rotor with beats is installed, an annular classifier located under the rotor, loading and unloading nozzles 2.

A disadvantage of the device is the increased energy and metal consumption.

The purpose of the invention is to increase the efficiency of crushing and reduce energy and metal consumption,

This goal is achieved by the fact that in a rotary crusher containing a housing, inside of which a rotor with beats is mounted on a vertical shaft, an annular classifier located under the rotor, loading and unloading nozzles, the rotor is made in the form of a hollow ring, the outer and inner walls of which are interconnected by vertical with partitions, while the inner wall is connected by axes attached to the opposite walls of the ring.

Figure 1 shows a rotor crusher in a vertical section, a General view; figure 2 - view of the rotor in plan; in Fig.Z - section aa in Fig.2.

The rotor crusher comprises a housing 1, inside of which a rotor 2 is mounted in the form of a hollow ring, the walls of which are connected by vertical partitions 3. The rotor 2 is connected by means of radial rods

with

Xi 00

N5 XJ

A with a shaft 5 supported through horizontal cylindrical bearings 6, 7, 8 on an axis 9 fixed to the lower bearing support 10 and to the upper flat cover 11 of the housing 1.

A horizontal bevel gear 12 is fixed on a vertical shaft 5 in its lower part, which is meshed with a bevel gear 13 mounted on a drive shaft 14 connected to an electric motor.

In the rotor 2 between its walls with the help of the axes 15 the beater 16 is suspended, located in the spaces between the vertical partitions 3. The beater 16 is located at a predetermined interval from each other. In the lower part of the housing 1 below the rotor 2 is attached an annular classifier 17, the grate of which has an arcuate shape. The bearing axis 9 of the crusher is supported by a metal plate 18, mounted on a metal structure of four load-bearing posts, between which there is an unloading pipe in the form of an inclined product pipeline 19 of a rectangular cross section. In the upper part of the crusher, a loading pipe 20 is installed. Under the discharge pipe 19, a conveyor 21 is installed.

The rotor crusher operates as follows.

The bulk material fed into the receiving funnel through the inclined nozzle 20 by gravity under gravity enters the upper part of the rotor 2, inside which, under the blows of the rotary rotor 2, beat 16 is broken into smaller pieces falling on the circular stationary grates of the classifier 17, and then the inclined conical discharge pipe 19 falls on the conveyor 21. The crushed material is collected in a receiving hopper. Large pieces that do not pass through the grate are further broken into bits and fall down into the inclined discharge pipe.

Claims (1)

SUMMARY OF THE INVENTION A rotary crusher comprising a housing inside which a rotor with beats is mounted on a vertical shaft, an annular classifier located under the rotor, loading and unloading nozzles, which, in order to increase crushing efficiency and reduce energy and metal consumption , the rotor is made in the form of a hollow ring, the outer and inner walls of which are interconnected by vertical partitions, while the inner wall is connected to the shaft by means of radial rods, and the beater is installed using axles attached to opposite walls of the ring. 0ig 2 Figure 2