Environment-friendly coal crusher

The utility model discloses an environment-friendly coal crusher which comprises a coal crusher body, a feeding port, a dust suction box, a dust suction pipe, a dust conveying pipe and a dust filtering box, a feeding port cover plate corresponding to the feeding port is arranged at the top of the coal crusher body, the dust suction box is communicated with the top face of the feeding port cover plate in a sealed mode, and the dust suction pipe is horizontally arranged in the dust suction box. The pipe wall of the dust suction pipe is axially provided with dust suction holes corresponding to the feeding port, one end of the dust suction pipe is sealed, the other end of the dust suction pipe is communicated with one end of the dust conveying pipe, the other end of the dust conveying pipe is communicated with the upper portion of the side wall of the dust filtering box, and an air pump is arranged on the upper portion of the side wall, opposite to the side wall connected with the dust conveying pipe, of the dust