SU1391707A1 - Apparatus for mincing materials - Google Patents

Abstract

The invention relates to devices for grinding materials and makes it possible to increase: the grinding efficiency of elastic materials. The device contains a cylindrical body 1 with ver. 2 and lower 3 covers. In case 1 on the vertical shaft 7 there is a rotor 8 with knives. 9. A shell I is installed above the rotor, on the inner surface of which there are ribs 11, and between them longitudinal windows 12 are made. knives 9 of the rotor 8. From the zone of interaction of the knives, the material enters through the windows into the shell, where the undersized material re-enters the working zone, and the crushed material is discharged through the discharge pipe 4 through the discharge pipe 6. I il.

Description

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The invention relates to a device for grinding materials and can be applied in the construction, mining and other industries.

The goal of the invention is an increase in the efficiency of grinding plastic materials.

The drawing shows a device for the grinding of materials, a general view.

The device contains a cylindrical body 1 with the top 2 and bottom 3 covers. The bottom cover 3 has a gas supply nozzle 4, and the top has a charging 5 and discharge 6 nozzles. In the housing 1 on the vertical shaft 7 there is a rotor 8 with knives 9. A rotor 10 is installed above the rotor.M The ribs II are intermixed with an internal surface, and longitudinal windows 12 are made between them.

The device operates as follows. The cusp of the crushed material is fed through the nozzle 5 and moves downward in the space bounded by the fins I1 and fall between the fixed knives 13 and the rotating knives 9 of the rotor 8.

The particles are crushed under the action of centrifugal forces on the wall of the housing 1, where they are picked up by the gas flow being injected through the pipe 4. The current is

| -az with suspended particles, entering through the windows 12 from the gap between the housing 1 and the shell 10 into the internal cavity of the shell, lose speed. As a result, large pieces fall out of the gas stream, which then zate along the rib 1 1 again into the cutting zone. The particles remaining in the gas stream are carried away from the device through the pipe 6 and are directed to the sieving.

{The large pieces in the device are moistened until particles of the required size are obtained.

Claims (1)

Invention Formula 0 A device for grinding materials, comprising a housing in which a rotor with knives interacting with fixed knives located above them, a loading and unloading nozzles are located on a vertical shaft, characterized in that, in order to increase the effective grinding of plastic materials, the device is equipped with a shell located above p (jTopoM, on the inner surface of which there are ribs mounted, and between them longitudinal windows are made, while fixed knives are installed on the bottom end of the shell, and the bottom of Chi gas is located at the bottom of the case.