Plunger pump

Abstract

The invention discloses a plunger pump. The plunger pump comprises a pump shell, wherein a left end cover is fixedly arranged at the left end of the pump shell; a right end cover is fixedly arranged at the right end of the pump shell; a power shaft is rotatably connected into the left end cover; a rotor is arranged at the end, extending into the pump shell, of the power shaft; a machine shell is fixedly installed on the right end cover, a P opening and a T opening are formed in the outer side of the circumference of the machine shell, a rotating groove is formed in the right end of the rotor,and a flow distribution shaft with the left end stretching into the rotating groove is fixedly installed in the machine shell; a plurality of radial piston holes are formed in the outer side of the circumference of the rotor, and a radial through hole is formed in the bottom of each radial piston hole; a plunger is slidably connected into each radial piston hole, an inner curved surface is arranged on the side wall of an inner cavity of the pump shell, and a first spring is arranged in each radial piston hole; and a plurality of variable oil grooves and a plurality of oil outlet grooves communicated with the P opening are formed in the outer side of the flow distribution shaft, and a variable control assembly is arranged in the flow distribution shaft. The plunger pump is simple in structure; and the displacement can be automatically adjusted according to the pressure of an oil outlet.

Description

technical field [0001] The invention belongs to the technical field of pumps, in particular to a plunger pump. Background technique [0002] The plunger pump is an important device of the mechanical 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 oil extraction, pumping units, 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 process, and the assembly It is...

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 and takes up a lot of space, which is not conducive to the use of variable displacement plunger pumps

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