Opposite end-face type valve-controlled axial plunger pump

Abstract

The invention discloses an opposite end-face type valve-controlled axial plunger pump. The opposite end-face type valve-controlled axial plunger pump comprises a left cylinder barrel, a right cylinder barrel, a left plunger and a right plunger. The left cylinder barrel and the right cylinder barrel are arranged oppositely. The left plunger and the right plunger are in slide fit with the left cylinder barrel and the right cylinder barrel respectively to form pressure cavities. An end face cam element is arranged between the left cylinder barrel and the right cylinder barrel, and the two ends of the end face cam element are each provided with a work face. The work faces are used for driving the left plunger and the right plunger to reciprocate. Therefore, geometrical pulsation and rotation unbalance of the plunger pump during work can be weakened, and the pulsation property and the stress state of the plunger pump are improved.

Description

technical field [0001] The invention relates to the field of plunger pumps, in particular to an axial plunger pump with opposite end face type valve distribution. 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. In terms of structure, it can be divided into two categories: axial type and radial type. The axial piston pump can also be divided into two types: swash plate type and inclined axis type. Among them, the swash plate plunger pump has the advantages of compact structure, high efficiency, high output pressure, reliable operation, and convenient flow adjustment, and is widely used in hydraulic presses, engineering machinery, aerospace and ships. However, the swash plate axial piston pump has the following problems in the working process: ① the swash plate stru...

AI Technical Summary

Problems solved by technology

However, the swash plate axial piston pump has the following problems in the working process: ① the swash plate structure will cause geometric pulsation and rotational imbalance, resulting in large vibration and noise; Excellent vibration performance and flow pulsation performance; ③The internal force of the plunger pump is complex, and there are many factors affecting the force, which reduces the efficiency; ④The parts that fit each other in the plunger pump are connected by friction pairs, which are too dependent on the lubrication characteristics, reducing reliability

However, the above studies have not fundamentally solved the problems of swash plate pumps

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