The utility model discloses a waste sand crushing device for
casting, which comprises a crushing box, a feed hopper, a power motor, a
power belt wheel, an auxiliary belt wheel, a rotating main shaft, a rotating crushing group, a
transmission belt and a fixing frame, the crushing box is fixed on the fixing frame, the feed hopper is arranged at the top of the crushing box, and a
discharge port is arranged at the bottom of the crushing box. The power motor is connected to the fixing frame, a power rod is connected with the
power belt wheel, the rotating main shaft is movably connected into the smashing box, one end of the rotating main shaft penetrates through the bottom of the smashing box to be connected with the auxiliary belt wheel, and the
power belt wheel is in transmission connection with the auxiliary belt wheel through a
transmission belt. The waste sand crushing device for
casting is simple in structure, convenient to use and practical, the beating step is arranged on the beating crushing block, meanwhile, the beating inclined face is arranged on the beating step, the beating angle is increased, meanwhile, the beating inclined face can throw crushed raw materials upwards, and the purpose that the materials fall and are repeatedly beaten and crushed again is achieved.