Metal powder crushing and screening device

The invention discloses a metal powder crushing and screening device, belongs to the technical field of screening equipment, and provides a crushing and screening device capable of enabling the thickness of metal powder to be more consistent, the crushing and screening device comprises a machine box, and a crusher, a main feeding belt and a grading feeding belt are arranged in the machine box; the pulverizer is suitable for providing metal powder for the main feeding belt, the main feeding belt is located below the grading feeding belt, the main feeding belt is provided with through holes penetrating through the inner wall and the outer wall, but only air can penetrate through the main feeding belt, and the grading feeding belt comprises a first-stage material distributing belt, a second-stage material distributing belt and a third-stage material distributing belt which are also provided with through holes penetrating through the inner wall and the outer wall. According to the invention, by arranging the mult