A spring type piezoelectric pump with valve

A piezoelectric pump and spring-type technology, which is applied in the field of spring-type piezoelectric pumps with valves, can solve the problems of long reaction time of the passive valve body and achieve the effects of reduced possibility, improved performance and improved reliability

Active Publication Date: 2017-11-17
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of long response time of the passive valve body, a spring type valve body is proposed, and a piezoelectric pump is designed based on this valve body

Method used

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  • A spring type piezoelectric pump with valve
  • A spring type piezoelectric pump with valve
  • A spring type piezoelectric pump with valve

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. (but protection scope of the present invention is not limited to this.)

[0032] A piezoelectric pump with a spring valve body and a valve is mainly composed of a pump body, a piezoelectric chip, a rigid element, an elastic diaphragm, an elastic film, an inlet check valve, an outlet check valve and a controller. The left and right sides of the pump body are symmetrically arranged, and the inlet and outlet valve bodies are arranged in the same direction, so that when one of the valve bodies is open and working, the other is in a closed state, which can realize one-way transmission of liquid.

[0033] In the present invention, the pump body adopts 3D printing technology and uses plastic high molecular polymer, which has strong rigidity and high strength. Preferably, the one-way valve in the present invention is made of polymer rubber, which has good toughn...

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Abstract

The invention discloses a spring-type piezoelectric pump with valve. One end of a lower pump body is connected with a liquid inlet section through a flange, and an inlet check valve is arranged at the liquid inlet section of the liquid inlet section close to one end of the lower pump body. The other end is connected with the liquid outlet section through a flange, and an outlet check valve is provided at the liquid outlet of the lower pump body, the upper end of the lower pump body is connected with the upper pump body through a flange, and the top surface of the upper pump body is closely The piezoelectric vibrator is fixed together; the present invention designs a new type of spring-type passive valve structure, and proposes to use the pre-tightening force of the spring to help shorten the response time of the valve. The piezoelectric pump body and the pipeline are connected by flange, which is more concise and convenient to install. The chamfered structure is adopted on the protrusion of the installed valve, which can be closer to the streamline than the case without chamfering, reduce the vortex generated when the liquid flows, and reduce the energy loss.

Description

technical field [0001] The invention relates to a piezoelectric pump with a valve, in particular to a spring-type piezoelectric pump with a valve. Background technique [0002] The piezoelectric pump is an important part of the micropump. Its working principle is to use the inverse piezoelectric effect of piezoelectric ceramics to deform the piezoelectric vibrator, and then change the volume of the deformation to realize the output of the fluid or use the piezoelectric vibrator to generate Fluctuate to output liquid. Compared with other traditional pumps, it has the advantages of higher energy density, simple structure, small size, light weight, low energy consumption, no noise, no electromagnetic interference, and can precisely control microfluidics. It has been favored by researchers at home and abroad. focus on. At present, piezoelectric pumps have been gradually used in research fields such as medical treatment, machinery, small household appliances, microchemical mixi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B43/04F04B53/10F04B53/16
Inventor 黄俊朱宜超王渊施卫东张建辉
Owner JIANGSU UNIV
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