Denitration catalyst crushing device

The invention relates to a denitration catalyst crushing device which comprises a bottom frame, a support fixed to the top of the bottom frame, a feeding disc fixed to the top of the support, an outer barrel vertically fixed to the bottom of the closed end of the right side of the feeding disc in a penetrating mode, a main body arranged in the outer barrel and a sliding groove plate fixed to the top of the bottom frame in a left-high right-low mode. A coarse crushing device, a scattering device and a fine crushing device are integrated together, so that the structure is greatly simplified, the size is reduced, the denitration catalyst raw materials do not need to be frequently and manually transferred in the crushing process, the operation steps are remarkably simplified, and use is facilitated; and the particles with the particle sizes not meeting the requirement can be automatically intercepted in the screen drum to be continuously crushed, so that the effect of saving time and labor is achieved. 本发明涉及一种脱硝催