Sealing device of hydraulic ceramic plunger pump

The utility model discloses a sealing device of a hydraulic ceramic plunger pump, which comprises a compression screw ring, a locking nut, a first locking screw, an adjusting gear and a sealing element, the sealing element is positioned at the bottom of a sealing cavity between a pump body of the hydraulic ceramic plunger pump and a plunger, the compression screw ring is sleeved outside the plunger, and the bottom of the compression screw ring extends into the sealing cavity; tooth teeth and external threads are arranged at the upper end and the lower end of the outer side of the pressing screw ring respectively, the first locking screw is fixed to one side of the pump body in a threaded mode, and the adjusting gear is located at the upper end of the first locking screw and meshed with thepressing screw ring. The locking nut is located between the first locking screw and the compression screw ring and is in threaded connection with the compression screw ring, the service life of the sealing piece is long, the