Screening device for construction waste separation

The utility model discloses a screening device for separating construction waste. The device comprises a rack and a concentric-square-shaped frame arranged at the top of the rack. A roller is arrangedat the top of the concentric-square-shaped frame; end shafts are arranged at the two ends of the roller; the surface of the end part of the end shaft is sleeved with a bearing sleeve; the bearing sleeve is fixed to the surface of the top of a concentric-square-shaped frame, a motor is arranged on one side of the concentric-square-shaped frame, the output end of the motor is in transmission connection with an end shaft at the end of the roller, two mounting rods are symmetrically arranged on the surface of the other side of the concentric-square-shaped frame, a side rod is arranged at the topof each mounting rod, and a feeding hopper is fixed between the two side rods; by arranging the rectangular through holes, the rolling wheels, the rod grooves, the limiting stop rods and the stop blocks, the material receiving