Crusher for coal mining

Abstract

The invention discloses a crusher for coal mining. The crusher for coal mining comprises a first-stage crushing structure and a second-stage crushing structure, wherein the first-stage crushing structure is fixedly installed on the second-stage crushing structure through a second support; a charge port is formed in the upper part of the first-stage crushing structure; an electric saw cutting machine is fixedly installed on the upper part of the charge port; the saw blade of the electric saw cutting machine penetrates through a strip-shaped through hole and extends into the charge port; a spiral fan blade is fixedly connected into a communication pipe; a rotary disc bearing is fixedly connected to the upper end and the lower end of the communication pipe separately; a belt groove is formedin the communication pipe; and the communication pipe is in transmission connection with a second motor through the belt groove and a belt. According to the crusher for coal mining, through the arranged electric saw cutting machine, a part of mass materials of massive coal materials can be cut off, so that blanking is easily carried out; and through the arrangement for the spiral fan blade in thecommunication pipe, control for the blanking is facilitated, acceleration for the blanking can be controlled, and reduction for the blanking speed can also be controlled, so that the crusher for coalmining is convenient to use.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and more specifically relates to a crusher for coal mining. Background technique [0002] The coal crusher is a new equipment developed for the coal industry. The coal crusher is mainly aimed at the difficult problem of coal with high moisture content. The alias of coal crusher is also called double-stage crusher, which belongs to high-efficiency fine crushing equipment. [0003] The coal pulverizer is designed without screen and grate bottom, and can crush high-humidity materials without any requirements for moisture content. At the same time, it is absolutely good at crushing dry materials. Double-rotor on-line double-stage crushing, after the material enters the coal crusher, it first passes through the first rotor crushing and then enters the second rotor crushing, because the crushing cavity is closed, the materials collide with each other in the inner cavity and crush each other , fo...

AI Technical Summary

Problems solved by technology

[0004] In the conventional coal crushers in the prior art, due to the large size of some coal lumps, it is difficult for bulk materials to enter, and it is easy to accumulate material and blockage; at the same time, it is directly connected between the primary crushing mechanism and the secondary crushing mechanism. The material directly enters the secondary crushing mechanism, and there is no control device in the middle, resulting in a heavy burden on the secondary crushing, and even when the humidity of the material is too high, it is easy to block the material

Images