Rapid sand screening device for constructional engineering

The invention relates to the technical field of constructional engineering, and discloses a rapid sand screening device for constructional engineering, which comprises a sand screening main bin, an inner cylinder main disc arranged in a cavity of the sand screening main bin, a synchronous transmission structure arranged in the cavity of the sand screening main bin and respectively connected with a motion bearing ring plate and a supporting sharp column; the slope stop blocks are fixedly arranged on the inner wall of the sand screening main bin in an annular array mode, the driving sleeve is fixedly arranged on the inner wall of the sand screening main bin, and a driven inserting piece connected with the driving sleeve in a sliding and sleeving mode is fixedly arranged on the surface, close to the sand screening main bin, of the inner barrel main disc; and the pressing mechanism is arranged at the side opening of the sand screening main bin. Through rotation of a motion bearing annular plate and movement of a