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| Study on valve body of piezoelectric pump with active valve |
| Wen Jianming1, Cheng Guangming1，2, Kan Junwu1，2, Zeng Ping1，2, Cheng Minghui2 |
| （1.Institute of Precision Machinery, Zhejiang Normal University, Jinhua, Zhejiang 321004,China； 2.College of Mechanical Science and Engineering, Jilin University,Changchun, Jilin 130025, China) |
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Abstract Due to the shortage of blockage performance and output pressure of the valveless piezoelectric pump, a new type of piezoelectric pump with active valve actuated by rectangular piezoelectric bimorph was developed. Active valve based on both ends of rectangular piezoelectric bimorph clamped was designed and manufactured, finite element model of the valve body was set up, relevant finite element simulation and experimental studies were carried out, static and dynamic characteristics of the valve body were analyzed, the curves of valve body displacement affected by different influencing factors were obtained. Then, four ordered mode and natural frequency of valve body were analyzed. Comparing experimental results with simulation ones, the reliability of the finite element simulation results was verified. Several factors influencing on flow rate of piezoelectric pump were studied, and the structure parameters of active valve based on both ends clamped were discussed by experiment tests. The simulation analysis and experiment results provide theoretical foundation for the structure design of valve body with active valve.
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Received: 13 January 2010
Published: 30 May 2010
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