Radial plunger pump

Abstract

The invention discloses a radial plunger pump. The radial plunger pump comprises a pump body, a rear cover, a rotating shaft and a plunger mechanism; one end of the pump body is connected with the rear cover in a buckled mode, the rotating shaft is rotationally connected with the pump body, and the plunger mechanism is mounted in an area jointly defined by the pump body and the rear cover; the plunger mechanism comprises a valve block, an oil outlet one-way valve, a plunger sleeve, an oil inlet one-way valve and a plunger, the valve block is provided with an oil outlet and an oil inlet, the oil outlet one-way valve communicates with the oil outlet, the plunger sleeve communicates with the oil inlet, the plunger is embedded in the plunger sleeve, an eccentric block is fixed to the rotating shaft, and one end of the plunger abuts against the eccentric block. When the plunger and parts in sliding fit with the plunger are machined, only the plunger and the plunger sleeve need to be independently processed, and the whole valve block does not need to be machined; when the plunger and the plunger sleeve are damaged, only the plunger and the plunger sleeve need to be replaced, and the valve body can be reused; and a plurality of oil inlet one-way valves are arranged on the valve body, so that the oil suction efficiency of the plunger pump can be improved.

Description

technical field [0001] The invention relates to the field of plunger pumps, in particular to a radial plunger pump. 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, compact structure, high efficiency and convenient flow adjustment. Piston pumps are widely used in high pressure, large flow and occasions where the flow needs to be adjusted, such as hydraulic presses, engineering machinery and ships. The radial piston pump is a piston pump in which the reciprocating direction of the piston or plunger is perpendicular to the drive shaft. [0003] The existing radial plunger pumps on the market generally directly open holes on the valve block and slidably insert the plunger. The valve block is provided with an...

AI Technical Summary

Problems solved by technology

And if adding plungers on the same working surface will cause the volume of the pump body to increase, the above-mentioned design will further increase its processing difficulty. In the existing structure, the plungers in the same row must perform the same motion state, that is, all of them are oil-discharged. The state is either in the state of oil absorption, and the corresponding eccentric blocks will be concentrated on one side of the rotating shaft. With the increase of the plunger mechanism, the weight of the eccentric block will be greater, and the dynamic balance of the rotating shaft will be worse when the rotating shaft rotates at high speed. The vibration of the plug pump is large and the stability becomes poor

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