Waste recovery device for building engineering

The utility model discloses a waste recovery device for building engineering, including supporting pedestal, the main casing body, a crushing barrel, first motor, the 2nd crushing barrel and sliding block, supporting pedestal's bottom surface is provided with the discharge gate, and is provided with switching valve on the discharge gate, the main casing position is in supporting pedestal's top, and the bottom of the main casing body is provided with the switch baffle, the driven round of outside that lies in the main casing body is just followed the driving wheel and is connected with the action wheel through the belt, be provided with the action wheel on the first motor, just first motor is fixed on supporting pedestal, the 2nd crushing barrel's central point puts and is provided with therotary rod, and the rotary rod is through being connected with the second motor from driving wheel and belt. This waste recovery device for building engineering when needing to adjust the volume of the rubble stone after sma