Feed raw material mashing device

The invention discloses a feed raw material mashing device, and belongs to the technical field of grain crushing, the feed raw material mashing device comprises a rack, a rotary drum and a mashing head, the rotary drum is horizontally arranged and rotatably mounted on the rack, and a plurality of uniformly distributed mashing and grinding parts are arranged on the circumferential surface of the rotary drum; the mashing head is arranged on the rack in the rotary drum, and the mashing head can ascend and descend in a reciprocating manner; and when the mashing head descends, the mashing head is matched with the descending section and the wave trough to mash and grind the feed raw materials on the mashing and grinding part. The rotating drum can rotate on the rack, meanwhile, the mashing head can reciprocate in the rotating drum and is matched with the mashing and grinding part to periodically mash raw materials in wave troughs of the mashing and grinding part, so that the feed raw materials are crushed, meanwhil