Piezoelectric hydraulic pump

Abstract

The invention diskloses a piezoelectric hydraulic pump and relates to a hydraulic pump, solves the problems of low output pressure, complex structure and difficult manufacture of the existing pump. A guide block (1-1) of the pump is arranged on the left end inside the cavity of a cylinder body (6); a guide block (1-2) is arranged on the right end inside the cavity of the cylinder body (6); a boss (17) is arranged on the right face of the guide block (1-2); the boss (17) is provided with a saucer washer (8); an O-shaped circle (7) is arranged on an external ring of the guide block (1-2); a piezoelectric actuator (5) is arranged inside the cylinder body (6); the left face of the guide block (1-1) is embedded on the right face of a left cover cap (4); a sealing cavity (9) is arranged between the right face of the guide block (1-2) and a right cover cap (10); the left cover cap (4) is fixedly connected with the right cover cap (10) via a hexagon socket screw (2); an oil inlet valve (13) and an oil outlet valve (14) are arranged between the left face of the right cover cap (10) and a cover plate (11). The piezoelectric hydraulic pump has the advantages of simple structure, small volume, light weight, low energy consumption, noiselessness and no electromagnetic interference.

Description

technical field [0001] The invention relates to a hydraulic pump. Background technique [0002] The minimum size of electrical components depends on the maximum effective magnetic flux density, and the maximum effective magnetic flux density is limited by the magnetic saturation of the magnetic material. The magnetic flux density of the magnetic material reaches a certain saturation value with the increase of the applied magnetic field strength, so only The size of the magnetic material can be increased to increase the power. Therefore, the structural size of electrical components is large and the power-to-mass ratio is small; in the application field of driving micro-machines, traditional hydraulic pumps have high manufacturing precision, complex structures, and high manufacturing difficulty and cost. At present, the output pressure of most piezoelectric pumps developed by piezoelectric materials is very small, which is far from being able to drive actuators. Contents of...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that most existing piezoelectric pumps developed by piezoelectric materials have large structural dimensions, small power-to-mass ratio, and very small output pressure, they are far from being able to drive actuators to generate motion. Traditional hydraulic pumps have very complicated structures and are difficult to manufacture. To solve the problem of large size and high cost, a piezoelectric hydraulic pump is provided. The specific technical solution to solve the above problems is as follows:

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