Coal crushing device of coal mine

Abstract

The invention provides a coal crushing device of a coal mine. The coal crushing device comprises a primary motor, a cutting body and an accommodating hole. Supporting legs are fixedly welded at the bottom of the primary motor and a shell; each of the bottoms of auxiliary stirring groups is rotatably connected to a stirring group transmission body, and each stirring group transmission body is rotatably connected to a stirring motor arranged on the side wall of the left end of the shell. The crushing rotary shafts are arranged in a staggered manner, wherein the crushing rotary shaft at the frontend is close to the left end while the crushing rotary shaft at the back end is close to the right end, and the staggering distance between the crushing rotary shafts is a distance of a crushing sheet, so that when coal is crushed, a full crushing surface is achieved, the coal is fully crushed, and no coal is missed; moreover, with the auxiliary stirring groups at the front and back ends of the inner wall of the shell, coal cinder on two sides can be centralized toward the crushing rotary shafts under the action of the auxiliary stirring groups, and the front and back shafts of the primary motor rotate reversely.

Description

technical field [0001] The invention belongs to the technical field of coal processing, in particular to a coal crushing device for coal mines. Background technique [0002] Coal is a solid combustible mineral gradually formed by ancient plants buried in the ground through complex biochemical and physical chemical changes; it is a solid combustible organic rock, which is mainly formed by the biochemical action of plant remains, and then transformed by geological action after burial. Coal is commonly known as coal; coal is known as black gold, the food of industry, and it has been one of the main energy sources used by the human world since the eighteenth century. [0003] For example, a double coal pulverizing device in application number CN201620237692.6, which can pulverize coal evenly in a closed space and improve the production efficiency of fine coal. A coarse coal feed port is provided, and two horizontally installed cylindrical drums are arranged in the first heavy c...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above technical problems, the present invention provides a coal crushing device for coal mines to solve the problem that most of the existing sieve plates are installed at the outlet, but the coal contains more or less water, so it is easy to cause blockage during use. As a result, the crushing device cannot be used or the load is increased, causing damage to the motor, and the crushing effect is not good, and the crushing surface is not uniform enough.

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