Preparation device for river crab feed

The invention relates to the technical field of feed preparation equipment, in particular to a river crab feed preparation device which comprises a bottom frame, a top frame and a granulator, the granulator is fixedly arranged at the top of the bottom frame, and a granulation head is further arranged on one side of the granulator in a threaded mode. The production raw materials of the river crab feed are metered and mixed through the material preparation mechanism, then the mixed raw materials are fed into the granulator to be granulated, and the preparation efficiency and the preparation quality of the river crab feed are effectively improved through accurate metering and mixing of the raw materials of the river crab feed; according to the structure, river crab feed particles with different particle sizes can be produced at a time, so that the river crab feed particles can be applied to feeding of river crabs with different sizes, in addition, the granulated river crab feed is subjected to steam curing treat