Centrifugal pump sealing device

The utility model provides a centrifugal pump sealing device which relates to the technical field of centrifugal pump sealing and comprises a water inlet and outlet pipe, an annular groove is formed in the rear side of the outer surface of the water inlet and outlet pipe, a corrugated pipe is arranged on the rear side of the water inlet and outlet pipe, and a fixing pipe is fixedly connected to the front side of the outer surface of the water inlet and outlet pipe. The rear end face of the fixing pipe is fixedly connected with a rubber pad, an annular guide rail is arranged so that it can be conveniently guaranteed that a rotating ring can only rotate on the outer surface of the fixing pipe, then a gear ring and a plurality of gears are driven to rotate, and when the gears rotate, two limiting discs are arranged so that it can be conveniently guaranteed that a screw and the fixing pipe can only achieve relative rotation, and the relative position is not changed; the relative positions of the gear and the gear