压电非接触式点胶阀的设计与实验
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北京市科技计划纳米科技产业园建设基金资助项目(Z141100003814004);佛山市科技创新专项基金资助资金(2013AH100031)

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Design and Experiment of a Piezoelectric Driven Noncontact Dispenser
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    摘要:

    近年来,点胶系统的使用日益广泛,各类精密液体分配系统对该技术需求旺盛。该文提出了一种由叠层压电陶瓷驱动的非接触式点胶阀,该阀由两个相同的叠层压电陶瓷驱动,通过位移放大机构,改变位移的输出方向,并将力传递给阀杆,最终实现喷射。利用FLUENT软件模拟了点胶过程,分析了流体喷射机理,通过实验研究了阀杆抬起时间、气压、流体粘度等喷射参数对于点胶量的影响,实验结果与仿真结果吻合。实验使用直径为0.35 mm的喷嘴、喷射液体为甘油时,可以获得平均直径为0.53 mm的液滴,其一致性误差小于6%。

    Abstract:

    In recent years, the dispensing systems have been increasingly and widely used in many applications to deliver fluid in a precisely controlled manner.A noncontact dispenser driven by piezoelectric ceramic was presented in this paper. Two parallel piezostack actuators of same size deform alternately.Their movements are amplified by a lever and transferred to a rod which can move up and down.Droplets are jetted out of the nozzle driven by the movement.The flow field of droplets jetting process has been simulated successfully via computational fluid dynamics software FLUENT.It is shown experimentally that how input parameters affect the size of droplets.When the nozzle′s diameter is 0.35 mm,the proposed dispenser can provide glycerol droplets with an averaged diameter as small as 0.53 mm and the consistent error rate is as much as 6%.

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黄大任,袁松梅,褚祥诚,崔宏超,张淑兰.压电非接触式点胶阀的设计与实验[J].压电与声光,2016,38(1):11-15. HUANG Daren, YUAN Songmei, CHU Xiangcheng, CUI Hongchao, ZHANG Shulan. Design and Experiment of a Piezoelectric Driven Noncontact Dispenser[J]. PIEZOELECTRICS AND ACOUSTOOPTICS

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  • 在线发布日期: 2016-02-25
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