Crushing and grinding device for grain processing

The utility model belongs to the technical field of grain processing, and particularly relates to a crushing and grinding device for grain processing, which comprises a working box, a working cavity is arranged in the working box, a rotating barrel is rotatably mounted at the bottom of the working cavity, a plurality of conical teeth I are fixedly mounted on the peripheral side wall of the rotating barrel, and a conical gear III is rotatably mounted at the top of the working cavity; the bottom end of the third bevel gear extends into the rotating barrel and is fixedly provided with a circular truncated cone, and a grinding roller is fixedly installed at the bottom of the circular truncated cone and located in the rotating barrel. The power assembly is located on the working box and used for driving the third bevel gear and the rotating barrel to rotate oppositely; when grains are crushed and ground, the crushing and grinding effect of the grains can be better, the speed of the grains entering the feeding pipe