Shot-slag separator of wheel hub shot blasting machine

The utility model discloses a shot-slag separator of a wheel hub shot blasting machine, which comprises a box body, a spiral material distribution conveyor arranged at the upper end of the box body, a downwards inclined blanking channel arranged in the box body, a sliding hole arranged on the upper wall of the blanking channel, a flow adjusting plate arranged in the sliding hole in a sliding manner, and an adjusting cavity arranged in the box body, a mechanism for driving the flow adjusting plate to move is arranged in the adjusting cavity, a shot cavity and a waste cavity are formed in the box body and located below the discharging channel, a stirring mechanism is arranged in the shot cavity, the shot cavity is communicated with the waste cavity, the lower end of the shot cavity is connected with a shot outlet pipe, the lower end of the waste cavity is connected with a waste pipe, and an air pipe communicated with the waste cavity is arranged on the outer side of the box body. The outer end of the air pipe i