Building material recycling and crushing device

The utility model discloses a building material recycling and crushing device. Outer shell, wherein the outer shell is cylindrical; a top cover is mounted at the upper end of the outer shell; a motoris installed at the position, close to the center, of the outer surface of the upper end of the top cover, a feeding port is formed in the side, close to the motor, of the outer surface of the upper end of the top cover, the lower end of the motor is connected with a smashing structure penetrating through the inner side of the outer shell, and a deslagging port is formed in the position, close tothe edge, of the outer surface of the lower end of the outer shell. According to the building material recycling and smashing device, the smashing structure, the fixing rod and the matching protrudingblock are arranged, the phenomenon that strip-shaped wooden waste materials are still adhered at the broken position after being smashed is not prone to occurring, and due to the fact that the feeding port and the movable roll