A Radial Piston Pump with Water-lubricated Shaft-Valve Composite Distribution

Abstract

The invention belongs to the field of plunger pumps, and particularly discloses a radial plunger pump adopting a water lubrication shaft valve for composite flow distribution. The radial plunger pumpcomprises an annular shell, a front end cover, a rear end cover, a rotating eccentric shaft, a plurality of plunger sliding shoe assemblies, a pressure flow distribution valve assembly and a flow distribution valve cover plate, wherein the front end cover and the rear end cover are arranged at the two ends of the annular shell, and the rotating eccentric shaft and the annular shell are coaxially arranged. A flow distribution groove is formed in the rotating eccentric shaft. The plurality of plunger sliding shoe assemblies are uniformly distributed in the circumferential direction of the rotating eccentric shaft, and do reciprocating motion in the radial direction of the annular shell in the rotating process of the rotating eccentric shaft. The pressure flow distribution valve assembly is installed in the flow distribution valve cover plate and communicates with a water outlet of the annular shell. The flow distribution valve cover plate is arranged outside the plunger sliding shoe assemblies in a covering mode and is installed on the annular shell. A channel enabling the pressure flow distribution valve assembly to communicate with the plunger sliding shoe assemblies is formed in the flow distribution valve cover plate. The radial plunger pump has the advantages of being compact in structure, balanced in stress, wide in speed and load range, free of oil lubrication, clean, pollution-free, convenient to maintain and the like.

Description

technical field [0001] The invention belongs to the field of plunger pumps, and more specifically relates to a radial plunger pump with water-lubricated shaft valve compound flow distribution. Background technique [0002] With the severe situation of the world's energy crisis and environmental protection requirements, as well as the natural advantages of water media such as environmental protection, no pollution, and good safety, water hydraulic technology is used in more and more industries (such as coal mines, fine water mist, buoyancy, etc.) Adjustment, etc.) began to be applied and became popular, with the incomparable advantages of the hydraulic system, so the water hydraulic technology has developed rapidly. [0003] Traditional plunger-type water pumps mostly adopt the structure of oil-water separation, that is, the transmission parts in the housing cavity are lubricated with mineral oil, and oil and water are separated by seals at the plunger or other methods. In ad...

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