Emergency rescue pump

The utility model discloses an emergency rescue pump which comprises a pump body assembly and a motor assembly coaxially connected to the inlet end of the pump body assembly, the pump body assembly comprises a pump shell and an impeller rotationally arranged in the pump shell, the motor assembly comprises a machine shell and a pump shaft rotationally arranged in the machine shell, and the impeller is fixedly connected with the pump shaft; an annular flow channel at the inlet end is formed between the machine shell and the pump shell; long rib plates and short rib plates are distributed on the machine shell in the circumferential direction at intervals, the long rib plates and the short rib plates extend in the axial direction, the long rib plates are connected to the machine shell and the pump shell at the same time, the short rib plates are arranged on the machine shell, and the radial extending size and the axial extending size of the short rib plates are smaller than those of the long rib plates. On the ba