Corncob crushing device

The utility model relates to the technical field of crushing devices, in particular to a corncob crushing device which is high in crushing stability, so that the crushing efficiency is conveniently maintained, certain crushing efficiency is maintained, and the problems that two crushing rollers are adopted to extrude corn flour, so that the two crushing rollers move towards the two sides, a gap is increased, and the crushing efficiency is reduced are solved. The crushing device comprises a crushing cylinder with the conical bottom, a discharging pipe is fixedly installed at the inner bottom of the crushing cylinder with the conical bottom, a valve is installed on the discharging pipe, the top of the crushing cylinder with the conical bottom communicates with a crushing channel, and the top end of the crushing channel is fixedly connected with a feeding hopper; the crushing channel is internally and rotatably connected with a crushing roller, crushing blocks in sliding fit with the crushing roller are symmetri