Medium-pressure high-speed rotating connector

The invention discloses a medium-pressure high-speed rotating connector. The medium-pressure high-speed rotating connector comprises a shell body; an end cover is fixedly connected to one end of the shell body, and a stationary sealing ring is connected to the inner side of the end cover in a clearance fit mode; a rotating shaft is connected in the shell body in a relative rotation mode, and a sealing spacer bush is connected to the inner wall of the shell body; the rotating shaft penetrates through the middle of the sealing spacer bush, and a boss is machined on the side, facing the stationary sealing ring, of the sealing spacer bush; the side surface of the boss is provided with an annular groove, piston rings are movably connected into the annular groove; a sealing sleeve is fixedly connected to the part, between the sealing spacer bush and the inner end surface of the rotating shaft, of the outside of the rotating shaft; a groove body is formed in the position, on the side surface of the sealing spacer bu