Coal briquette crushing device used for coal mining

Abstract

The invention discloses a coal briquette crushing device used for coal mining. The coal briquette crushing device comprises a machine body, a crushing cavity is formed in the upper portion of the machine body, a center shaft is rotationally installed at the bottom of the crushing cavity, a filter screen, a grinding plate, a filter plate and a pre-crushing cone are sequentially installed on the center shaft from bottom to top, the filter screen and the filter plate are fixedly installed on the inner wall of the crushing cavity, the middles of the filter screen and the filter plate are movably connected with the center shaft through lantern rings, the grinding plate and the pre-crushing cone are fixedly connected with the center shaft, adjustable crushing cutters and fixed crushing cutters which are distributed in a staggered manner are installed on the pre-crushing cone, and a coaxial inverted-cone-shaped impact baffle is installed on the outer side of the pre-crushing cone. By means of the coal briquette crushing device , the pretreatment degree is adjustable; the pre-crushing degree to coal briquettes is improved to a great degree, and the pretreatment efficiency is improved; and dust raising during crushing is reduced, the situation of coal briquette blockage is reduced as much as possible in the crushing process, the blocking phenomenon is reduced, and the coal briquette crushing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a coal crushing device for coal mining. Background technique [0002] Coal mines refer to places rich in coal resources, which are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far away from the surface, it is generally selected to excavate the coal by digging the roadway underground, which is an underground coal mine. When the distance between the coal seam and the surface is very short, it is generally chosen to directly strip the surface soil layer to excavate coal, which is an open-pit coal mine. Coal is the most important solid fuel and a kind of combustible organic rock. According to the degree of coalification, it can be divided into four types: peat, lignite, bituminous coal and anthracite. [0003] Existing coal pulverizers for coal mines often use relatively set gear teeth to crush the coal. Although the pulverization...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a coal crushing device for coal mining, which has the advantages of adjustable crushing degree, high crushing efficiency, and reduced jamming, and solves the problem of the current coal crushing machine. The problem of low crushing efficiency and poor crushing quality

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