Pharmaceutical crushing device with circulating crushing function

The utility model belongs to the technical field of crushing devices, and particularly relates to a pharmaceutical crushing device with a circulating crushing function, which comprises a base and a crushing box, a powder screw elevator and a delivery pump are arranged at the top of the base, and the output end of the delivery pump is connected with a connecting pipe. An outlet in the other end of the connecting pipe faces the position over a feeding box of the powder screw elevator; the crushing box is arranged on the top wall of the base, and the top wall of the crushing box communicates with an inner cavity of the crushing box and is provided with a feeding barrel. According to the raw material crushing device, raw materials enter the inner cavity of the crushing box through the feeding barrel, the two first motors are started to drive the crushing rollers to crush the raw materials, the treated raw materials are discharged through the three-way pipe, and if the raw materials do not meet requirements, the f