Pressure sealing 3-cylinder plunger pump

The utility model relates to a novel ideal slurry pump-pressure sealing 3-cylinder plunger pump which is suitable for being used as the power pump of the pipeline transportation engineering of any solid materials taking water as carrier. The pump is composed of three large part: a low-pulse 3-cylinder plunger pump, a pressure sealing device and a computer automatic control system, wherein, the pressure sealing device is a patent (94243525.7) and comprises a patent spherical hinge sealing box (91232369.8); the pressure sealing device has reliable seal and long service life, and is capable of effectively washing plunger pistons without diluting slurry concentration. A computer automatically controls the operation of the pump, and is completely capable of realizing the purpose of economic operation. The utility model is mainly used for the hydraulic pipeline conveying engineering of electric power, coal and mines, the water injecting pump of oil fields, the lift pump of water diversion engineering, etc.