A variable displacement high pressure pump

Abstract

The invention discloses a variable displacement high-pressure pump, which includes a pump casing and an end cover arranged at the opening of the right end of the pump casing; A plurality of high-pressure pump components are evenly installed around the rotating shaft at intervals; the rotating shaft is provided with a first flanging at one end located in the oil inlet chamber, and the end cover is provided with a shaft sleeve on the end face facing the pump casing, so The bushing is arranged coaxially with the rotating shaft, the bushing is provided with a second flanging at one end located in the oil inlet chamber, and a plurality of guide slide bars are arranged side by side between the first flanging and the second flanging; The rotating shaft is provided with a spring chamber at one end located in the oil inlet chamber, and a camshaft is slidably connected in the spring chamber, and the right end of the camshaft is located in the bushing, and the spring chamber is provided for forcing the cam to The first spring that moves rightward is the first spring, and a relief valve is plugged into the right end surface of the end cover; the variable displacement high-pressure pump is not only simple in structure, but also simple in processing and saves space.

Description

technical field [0001] The invention belongs to the technical field of hydraulic pumps, in particular to a radial plunger high-pressure pump with variable displacement. Background technique [0002] The plunger pump is an important device in the hydraulic system. It relies on the reciprocating movement of the plunger in the cylinder to change the volume of the sealed working chamber to realize oil absorption and oil pressure. The plunger pump has the advantages of high rated pressure, high efficiency and convenient flow adjustment, and is widely used in high pressure, large flow and flow adjustment occasions, such as hydraulic presses, engineering machinery and ships. Most of the working conditions of existing mechanical equipment require plunger pumps with low pressure and large flow and high pressure and small flow. Therefore, a variable pump structure has appeared in the prior art to solve the problem, but the structure is often complex, the parts are difficult to proces...

AI Technical Summary

Problems solved by technology

Most of the working conditions of existing mechanical equipment require plunger pumps with low pressure and large flow and high pressure and small flow. Therefore, a variable pump structure has appeared in the prior art to solve the problem, but the structure is often complex, the parts are difficult to process, and the assembly Difficult, the controller components are generally located outside the pump, and the structure is complex, taking up a lot of space, which is not conducive to the use of variable displacement plunger pumps

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