Shellfish sand spitting machine for aquaculture

The shellfish sand spitting machine comprises a water storage tank, fixing frames are fixedly connected to the upper sides of the left end and the right end of the water storage tank, hydraulic rods are fixedly connected to the lower sides of the fixing frames on the left side and the right side, and lifting blocks are fixedly connected to the lower ends of the hydraulic rods; rotating shafts are rotationally connected to the outer sides of the lifting blocks on the left side and the right side, a sand spitting cylinder is fixedly connected between the rotating shafts on the left side and the right side, a cover plate is arranged on the outer side of the sand spitting cylinder, a collecting unit is arranged on the inner side of the water storage tank, a liquid discharging pipe is fixedly connected to the right side of the water storage tank, and the collecting unit comprises a fixing frame. By arranging the water storage tank, the fixed frame, the filter frame, a toothed plate, a rotating rod, a gear, a seali