Dual-seal submersible pump

The invention relates to a double-sealing type submersible pump which comprises a pump body, a pump shaft, an impeller and a pump cover, the impeller is located in an inner cavity of the pump body, the pump cover is fixedly connected to the upper end face of the pump body in a sealed mode, and a bearing seat is installed on the upper end face of the pump cover. A first sealing assembly is installed on the pump shaft located between the inner side face of the pump cover and the upper flange of the impeller, a cavity is formed between the outer side face of the pump cover and the inner side face of the bearing seat, the cavity is filled with gear lubricating oil, and a second sealing assembly is installed on the pump shaft located in the cavity area. The cavity formed between the outer side face of the pump cover and the inner side face of the bearing seat is filled with gear lubricating oil, double protection is achieved in cooperation with the second sealing assembly, and therefore the situation that a bearin