Traditional Chinese medicine raw material screening device

The utility model relates to a traditional Chinese medicine raw material screening device which comprises a processing box body, an extension discharging assembly, a screening structure, a dust collecting structure, a negative pressure structure and a linkage structure. The processing box body comprises a screening box and a dust collecting hopper. The extension discharging assembly comprises an extension sleeve fixedly penetrating through the right side face of the screening box and a stand column fixedly erected in the extension sleeve. The screening structure comprises a transmission rod, a screening drum fixedly installed on the outer circumferential wall of the transmission rod, a plurality of discharging plates obliquely and fixedly installed on the inner wall of the screening drum, and a material cover detachably installed on the side face of the screening drum and correspondingly arranged on the inner side of the extending sleeve. A rotating motor used for providing rotating power for the transmission