The invention discloses a multi-stage high-efficiency sand screening device for
construction engineering, which comprises a base plate, a sand screening box, a crushing device, a first screen, a
second screen, a second spring, a sliding rod, a sliding sleeve, a connecting plate, a
wool Brush, transmission mechanism, first gear, first reel, first traction
rope, second gear, first
cam, second
cam, second reel and second traction
rope, said transmission mechanism includes motor, The second disc, the movable rod, the first rack and the second rack, the present invention is provided with a crushing device, which crushes the agglomerated sand, avoids affecting the efficiency of sand screening, and is provided with a transmission mechanism, a first winding wheel, The second winding wheel, sliding rod, sliding sleeve, connecting plate and
brush drive the
brush to move left and right,
brush the first screen and the
second screen, and avoid the mesh holes of the first screen and the
second screen from being blocked , Improve the screening efficiency, equipped with a first
cam, a second cam and a second spring, so that the first screen and the second screen shake left and right, further improving the screening efficiency.