Drum screen for coal gangue processing

Abstract

The invention belongs to the technical field of coal gangue processing, and particularly relates to a drum screen for coal gangue processing. The drum screen comprises a bottom frame and a fixed framefixed on the upper surface of the bottom frame, wherein a first motor is arranged on the side surface of the fixed frame; an output shaft of the first motor penetrates through the fixed frame and isfixedly connected to a first drum; a plurality of first through holes are arranged in the outer side wall of the first drum; the upper part of the fixed frame is of a hollow structure; a conveying pipe is fixed in the fixed frame; cover plates of the first drum and a second drum are opened, a proper amount of coal gangue is poured into the first drum, after the two cover plates are closed one by one through fixing pieces, the first motor and the second motor are started at the same time, the first motor and the second motor drive the first drum and the second drum to rotate, and the rotating directions are opposite; and due to the fact that the aperture of the second through hole is smaller than that of the first through hole, large-particle coal gangues can be conveniently thrown into thesecond drum, so that the purpose of sieve classification is achieved.

Description

technical field [0001] The invention belongs to the technical field of coal gangue processing, and in particular relates to a trommel screen for coal gangue processing. Background technique [0002] Coal gangue is the solid waste discharged during the coal mining process and coal washing process. It is a black-gray rock with low carbon content and harder than coal that is associated with the coal seam during the coal formation process, including the excavation during the roadway excavation process. Gangue, gangue extracted from the roof, floor and interlayer during the mining process, and gangue picked out during the coal washing process. Coal-associated waste rock is a kind of mining solid waste, which is the solid discharged during the excavation, mining and coal washing process. Waste, in the process of coal washing, coal gangue needs to be screened, and drum screen is one of the equipments for screening coal gangue. [0003] There are following problems in existing tech...

AI Technical Summary

Problems solved by technology

[0004] 1. The existing trommel screen for coal gangue processing generally uses one drum for screening, which is inconvenient to classify the size of coal gangue and to protect the drum;

[0005] 2. In the existing trommel screen for coal gangue processing, when the drum rotates rapidly to screen coal gangue, a large amount of dust will be generated. Because there is no dust suppression device, it is not conducive to providing a good working environment for operators;

[0006] 3. The existing trommel screen for coal gangue processing, the small coal gangue screened out, because there is no receiving device, the small coal gangue is scattered around the trommel screen, which increases the cleaning time in the later stage

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