仿鱼形阻流体无阀压电泵混合泵送机理与验证  

Mixed Pumping Mechanism and Experimental Validation of Valveless Piezoelectric Pump with Fish-Like Blocking Fluid Parts

作　　者：纪晶[1] 李胜多[1] 胡彩旗[1] 胡笑奇 谢煜喆 李垚 JI Jing;LI Shengduo;HU Caiqi;HU Xiaoqi;XIE Yuzhe;LI Yao(College of Mechanical and Electrical Engineering,Qingdao Agricultural University Qingdao,266109,China;College of Mechanical and Electrical,Zaozhuang University Zaozhuang,277160,China)

机构地区：[1]青岛农业大学机电工程学院,青岛266109 [2]枣庄学院机电工程学院,枣庄277160

出　　处：《振动.测试与诊断》2025年第2期359-366,416,共9页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(31971801);山东省自然科学基金资助项目(ZR2020ME250,ZR2020ME252)。

摘　　要：为提高无阀泵的泵送性能和混合效果,提出一种仿鱼形复合阻流体致阀、致涡、多输入输出及泵阀分体的无阀压电泵。首先,通过对正向、反向绕流仿鱼形复合阻流体流阻的比较,诠释了仿鱼形阻流体致阀、致泵机理;其次,数值模拟了仿鱼形复合阻流体绕流场,指出流体涡的产生及运动是实现高效混合流体的原因;然后,分析了振子周期性振动驱动流体传输的工作过程;最后,制作泵样机并进行了泵送性能试验。结果表明:在驱动电压及频率为180 V和10 Hz时,泵送纯水的瞬时流量达到111.24 mL/min,泵送混合液体的瞬时流量达到94.10 mL/min,混合液质量分布均一,颜色均匀稳定;仿鱼形复合阻流体及其无阀泵能够实现对流体的混合输送,且混合输送流体的能力优于同类无阀泵。In order to improve the pumping performance and mixing effect of valve-less piezoelectric pump,a novel valve-less pump is proposed,which has the characteristics that fish-like composite blocking fluid parts used as the valve,multi-inlet/multi-outlet,and a decoupled pump-valve structure.The valving mechanism is elucidated through analysis of asymmetric flow resistance between forward and reverse directions around the fishlike composite blocking fluid parts.Numerical simulations of the flow field demonstrate that vortex generation and evolution are the primary mechanisms enabling efficient fluid mixing.The fluid transport process driven by periodic piezoelectric actuator vibrations is analyzed.A prototype is fabricated and tested under 180 V driving voltage at 10 Hz frequency.Experimental results show instantaneous flow rates of 111.24 m L/min for pure water and 94.10 m L/min for mixed fluids,with the mixture exhibiting homogeneous quality and stable color distribution.Theoretical analysis and experimental results show that the proposed pump achieves simultaneous fluid mixing and transportation,outperforming existing valveless pumps in hybrid pumping capability.

关 键 词：无阀 压电泵 压电振子 仿鱼形复合阻流体 混合泵送 

分 类 号：TH32[机械工程—机械制造及自动化] TH38