Building block material recovery device

The utility model discloses a building block material recovery device which comprises crushers arranged on each layer, discharge ports of the crushers are connected to a blanking pipeline, the blanking pipeline is vertically arranged on the outer side of a building, a spraying device is arranged at the top of the blanking pipeline, a solid-liquid separation device is arranged at the bottom of the blanking pipeline, and an energy dissipation bend is arranged on the blanking pipeline. And the discharging pipes are uniformly distributed on the discharging pipeline. The crushed block materials enter the discharging pipeline and are conveyed downwards, kinetic energy of the waste materials is eliminated through the energy dissipation bend, the discharging speed is reduced, and smoke dust is reduced. The spraying device on the top continuously sprays water mist, dust particles are carried in the water mist falling process, waste materials are finally filtered and separated in the solid-liquid separation device, on-