Piezoelectric hydraulic pump

Abstract

The invention provides a piezoelectric hydraulic pump, and relates to the technical field of hydraulic pumps. The piezoelectric hydraulic pump comprises a hydraulic circulating system and a drive system which are sealed and isolated by an elastic drive spacer, wherein the hydraulic circulating system is detachably connected to the drive system; the drive system comprises a drive housing and piezoelectric ceramics arranged in the drive housing in a sealing mode; the piezoelectric ceramics is fixedly connected onto the elastic drive spacer. The hydraulic circulating system comprises a hydraulichousing as well as a liquid cavity, a liquid inlet, a liquid outlet and a one-way hydraulic valve arranged in the hydraulic housing; the liquid cavity and the liquid inlet are in communication througha liquid inlet channel arranged in the one-way hydraulic valve; the liquid cavity and the liquid outlet are in communication through a liquid outlet channel arranged in the one-way hydraulic valve; ring-shaped one-way guide devices are arranged on the liquid inlet channel and the liquid outlet channel; and the elastic drive spacer is introduced into the liquid cavity. The piezoelectric hydraulicpump solves the problems that a hydraulic pump in the prior art is great in size, is great in weight, and cannot adapt to light-quality and efficient application environments such as space flight andaviation.

Description

technical field [0001] The invention relates to the technical field of hydraulic pumps, in particular to a piezoelectric hydraulic pump. Background technique [0002] The hydraulic pump is the power component of the hydraulic system. It is driven by an engine or an electric motor. It sucks oil from the hydraulic oil tank, forms pressure oil and discharges it, and sends it to the actuator. The hydraulic pumps commonly used in the prior art are divided into three types according to their structure: Gear pumps, plunger pumps, vane pumps and screw pumps all have complex structures and heavy weights, and are not suitable for aerospace and other fields that require light weight and high efficiency. Contents of the invention [0003] Aiming at the above-mentioned problems in the prior art, the present invention provides a piezoelectric hydraulic pump, which solves the problem that the hydraulic pump in the prior art is large in size and heavy in weight and cannot be adapted to th...

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Problems solved by technology

[0003] Aiming at the above-mentioned problems in the prior art, the present invention provides a piezoelectric hydraulic pump, which solves the problem that the hydraulic pump in the prior art is large in size and heavy in weight and cannot be adapted to the application environment requiring light weight and high efficiency in aerospace and aviation.

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