SU1680310A1 - Apparatus for comminuting and classifying materials - Google Patents

Description

The invention relates to the technique of grinding various products and can be used in the production of building materials, chemical, energy, mining and other industries. The purpose of the invention is to increase the efficiency of grinding and material classification, reducing energy consumption. The device has a screening classifier 5 placed inside the drum-elevator 3, the working body of which is assembled from rotating rolls 6. 2 Il.

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1680310

The invention relates to the technique of crushed ^ various products and can be used in the production of building materials, chemical, energy, mining and other industries.

The aim of the invention is to improve the efficiency of grinding and material classification, reduction of energy consumption,

FIG. 1 shows a schematic structural diagram of the device; in fig. 2 - device, longitudinal section.

The device comprises a housing 1 fixed on the foundation, consisting of two end walls, and a rotor 2 placed inside it. The housing and rotor are covered by an annular rotating elevator drum 3, on the inner surface of which the lifting blades 4 are mounted. On the walls of the housing 1 there is an inclined screen classifier 5, the working body of which consists of a set of rollers rotating in one direction 6. For removing the finished product from the device, side-discharge chutes 7 are provided in the lower part of the screen, passing e through the side wall of the housing.

The device is equipped with a loading chute 8 and a pipe 9 for supplying water in the case of wet grinding of materials.

Between the fixed side walls of the housing 1 and the rotating drum grinder 3 there are articulated O-rings 10. Along the periphery of the elevator are mounted annular support rails 11, in contact with the support rollers 12, whose bearings are fixed to the foundation.

The device works as follows.

The source material is fed into the installation through the charging chute 8 and enters the impact zone of the rotor 2. The crushed material enters the inner surface of the> rotating ring elevator 3, rises upwards by the blades 4 and at their upper position is dumped from them onto the inclined screen classifier 5. rolls 6 through the gaps between them, fine particles of the material (finished product) falls down and roll into discharge chutes 7. When the material is wetly crushed, water is pumped through the pipe 9. And the roughness passes through the screen mud slime.

Large particles of material roll down the upper surface of the classifier and enter the grinding device for re-grinding.

When the counter-movement of the working surfaces of the rolls 6 in the gaps between them, they are self-cleaning from adhering material.

Using the annular seal 10 prevents the release from the device grinding products, sludge and pollution of the surrounding space. By means of the rail 11 and the support rollers 42, the rotating elevator 3 is fixed in the vertical and axial directions.

Claims (1)

Claim A device for grinding and classifying materials, comprising a housing with a rotor located in it and a rotating annular drum-elevator covering them, equipped with lifting blades, chutes for supplying the source material and unloading the finished product, supporting rollers of the elevator, characterized in that, in order to increase efficiency grinding and classifying material, reducing energy consumption, the device is equipped with an internal drum-elevator and a sifter-classifier tilted towards the rotor, a working body which is recruited from rotating rolls. 1680310 LL