Abstract: A cooling device for interior and exterior surfaces of a mud pump liner, in which one end of the suction tube 3 is connected to the water tank 2, with the other end of the suction tube 3 connecting to the intake port of the spray pump 4, and an end of the discharge pipe 5 is connected to the outlet port of the spray pump, with another end thereof connecting to the interior cooling nozzle 1; and said another end of the discharge pipe 5 is also connected with a exterior cooling nozzle 6, the spray port of the interior cooling nozzle 1 is placed inside the liner 7, and the spray hole of the exterior cooling nozzle 6 is placed outside the liner 7. The present invention additionally performs spraying against the outer surface of the liner and cooling it so as to sufficiently cool the liner/piston. In this way, the working temperature of the liner/piston is decreased and the service life thereof is extended. Experiments show that the working temperature of the liner/piston is decreased by at least 16° C.

Abstract: A cooling device for interior and exterior surfaces of a mud pump liner, in which one end of the suction tube 3 is connected to the water tank 2, with the other end of the suction tube 3 connecting to the intake port of the spray pump 4, and an end of the discharge pipe 5 is connected to the outlet port of the spray pump, with another end thereof connecting to the interior cooling nozzle 1; and said another end of the discharge pipe 5 is also connected with a exterior cooling nozzle 6, the spray port of the interior cooling nozzle 1 is placed inside the liner 7, and the spray hole of the exterior cooling nozzle 6 is placed outside the liner 7. The present invention additionally performs spraying against the outer surface of the liner and cooling it so as to sufficiently cool the liner/piston. In this way, the working temperature of the liner/piston is decreased and the service life thereof is extended. Experiments show that the working temperature of the liner/piston is decreased by at least 16° C.