Wild soybean screening and impurity removing device

The wild soybean screening and impurity removing device comprises a screening machine body, a feeding box and a screening box, the feeding box and the screening box are arranged on the screening machine body, an adjusting opening is formed in the top wall of the discharging opening end of the feeding box, an adjusting plate is inserted into the adjusting opening, a lifting assembly is arranged between the adjusting plate and the feeding box, and a filter cartridge cover is arranged on the screening machine body. A rotating shaft is rotationally arranged in the filter cartridge cover, a knockout plate is annularly distributed on the rotating shaft, a screening box is arranged on the side wall of the filter cartridge cover in a communicating mode, a screening inclined block is arranged at the bottom end of the inner wall of the screening box, an air suction pipe is arranged on the outer side wall of the screening box in a communicating mode, and an air suction machine is arranged on the side wall of the filter