Stepped sealing ring of double suction pump

A stepped sealing ring of a double suction pump comprises a pump body and a pump cover, a pump shaft is arranged between the pump body and the pump cover, an impeller is installed on the pump shaft, a sealing ring is arranged on the periphery of the impeller, a sealing step is machined on an inner ring of the sealing ring, and a sealing step matched with the sealing step is machined on the outer side of an impeller opening ring. Step-shaped sealing is formed between the sealing steps, and a sealing gap is kept between the sealing steps. The utility model has the advantages of simple structure, convenience in processing and no influence on assembly efficiency; medium backflow from a high-pressure area to a low-pressure area of the water pump can be reduced, and friction between the inner diameter of the sealing ring and the outer diameter of the impeller wear ring is not prone to being caused. The sealing ring structure is high in practicability, can be used for double suction pump products of different specif