Chinese Journal of Mechanical Engineering >

2018 , Vol. 31 >Issue 1: 2 - 2

DOI: https://doi.org/10.1186/s10033-018-0217-6

Intelligent Manufacturing Technology

Theory and Experimental Verifcation on Cymbal-shaped Slotted Valve Piezoelectric Pump

  • Jun Huang ,
  • Yi-Chao Zhu ,
  • Wei-Dong Shi ,
  • Jian-Hui Zhang
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  • 1. National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China;
    2. College of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou 510006, China

收稿日期: 2016-07-06

  网络出版日期: 2019-07-23

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Theory and Experimental Verifcation on Cymbal-shaped Slotted Valve Piezoelectric Pump

  • Jun Huang ,
  • Yi-Chao Zhu ,
  • Wei-Dong Shi ,
  • Jian-Hui Zhang
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  • 1. National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China;
    2. College of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou 510006, China

Received date: 2016-07-06

  Online published: 2019-07-23

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摘要

Valve piezoelectric pumps usually have larger fow rate than that of valveless ones. However, the traditional cantilever valve easily induces stress concentration which impacts the reliability of pumps. Therefore, a cymbal-shaped slotted check valve is proposed to be applied in a piezoelectric pump in order to reduce the stress concentration of the valve and thus improve the reliability of the piezoelectric pump. The structure and working principle of the piezoelectric pump are analyzed; the stress analysis of the cymbal-shaped slotted valve diaphragm is conducted. In addition, fnite element software is employed to analyze the diference of the Von-Mises stress between the cymbal-shaped slotted diaphragm and the slotted fat diaphragm. The simulation results show that, the Von-Mises stress of cymbal-shaped slotted diaphragm is smaller than that of the slotted fat one. Furthermore, the cymbal-shaped slotted valve piezoelectric pump is also fabricated, and fow rate experiment is performed. The experimental results indicate that the fow rate of piezoelectric pump working in low frequencies (0 Hz < f < 50 Hz) is larger than that working in high frequencies (200 Hz < f < 2000 Hz). When driven at voltage of 160 V and frequency of 5 Hz, the pump reaches its maximum fow rate of 6.6 g/min. The experimental results validate the feasibility of the cymbal-shaped slotted check valve. This research can efectively solve the problem of stress concentration of valve piezoelectric pumps and is helpful for improving the reliability of them.

关键词： Cymbal-shaped slotted; Piezoelectric pump; Valve; Stress

本文引用格式

Jun Huang , Yi-Chao Zhu , Wei-Dong Shi , Jian-Hui Zhang . Theory and Experimental Verifcation on Cymbal-shaped Slotted Valve Piezoelectric Pump[J]. Chinese Journal of Mechanical Engineering, 2018 , 31(1) : 2 -2 . DOI: 10.1186/s10033-018-0217-6

Abstract

Valve piezoelectric pumps usually have larger fow rate than that of valveless ones. However, the traditional cantilever valve easily induces stress concentration which impacts the reliability of pumps. Therefore, a cymbal-shaped slotted check valve is proposed to be applied in a piezoelectric pump in order to reduce the stress concentration of the valve and thus improve the reliability of the piezoelectric pump. The structure and working principle of the piezoelectric pump are analyzed; the stress analysis of the cymbal-shaped slotted valve diaphragm is conducted. In addition, fnite element software is employed to analyze the diference of the Von-Mises stress between the cymbal-shaped slotted diaphragm and the slotted fat diaphragm. The simulation results show that, the Von-Mises stress of cymbal-shaped slotted diaphragm is smaller than that of the slotted fat one. Furthermore, the cymbal-shaped slotted valve piezoelectric pump is also fabricated, and fow rate experiment is performed. The experimental results indicate that the fow rate of piezoelectric pump working in low frequencies (0 Hz < f < 50 Hz) is larger than that working in high frequencies (200 Hz < f < 2000 Hz). When driven at voltage of 160 V and frequency of 5 Hz, the pump reaches its maximum fow rate of 6.6 g/min. The experimental results validate the feasibility of the cymbal-shaped slotted check valve. This research can efectively solve the problem of stress concentration of valve piezoelectric pumps and is helpful for improving the reliability of them.

Key words： Cymbal-shaped slotted; Piezoelectric pump; Valve; Stress

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