Building waste crushing and grinding equipment

The invention relates to the technical field of building waste treatment, in particular to building waste crushing and grinding equipment which comprises a grinding machine, and a crushing unit is arranged right above a feeding end of the grinding machine; the crushing unit comprises a base and a crushing box, a rotating cylinder is arranged above the base, a feeding pipe is coaxially and rotatably arranged in the rotating cylinder, the feeding pipe is in transmission connection with a driver, a flow divider is fixed to the lower end of the feeding pipe, a plurality of straight pipes are arranged around the flow divider, the inner ends of the straight pipes are in butt joint with the flow divider, and the outer ends of the straight pipes are in butt joint with the inner ends of inclined pipes; the lower portion of the rotary drum is coaxially sleeved with a water storage barrel, and the water storage barrel is installed on the base in a lifting mode through a lifting module. Two operation modes of crushing an