燕山大学学报2026，Vol.50Issue(4)：301-307,7.DOI:10.3969/j.issn.1007-791X.2026.04.003
压电驱动螺旋微通道混合器的设计及试验研究
Design and experimental study of a piezoelectrically driven spiral microchannel mixer
摘要
Abstract
To improve the mixing efficiency of microchannel mixers,it is necessary to increase the output pressure of the driving source to overcome the pressure drop in high-resistance microchannels.In this paper,a piezoelectric-driven micromixer is proposed,which uses an energy-storage piezoelectric pump as the driving source and incorporates a spiral mixing microchannel with airfoil baffles.First,the pressure stabilization mechanism of the energy-storage gas tank is theoretically analyzed,and the relationship between the gas pressure and the liquid level height in the tank is derived.Second,the output performance of the energy-storage piezoelectric pump and the spiral microchannel mixer is experimentally investigated.Finally,the BaSO4 coprecipitation reaction is used as the characterization system,and the mixing performance of the piezoelectric-driven helical microchannel mixer is verified by comparing the mixing effects under different mixing modes.The results show that the maximum output back pressure of the energy-storage piezoelectric pump reaches 10 021 Pa,which is 92％higher than that of the duckbill-valve piezoelectric pump without a gas tank.The BaSO4 particles prepared by the proposed mixer have particle sizes of 200～300 nm and are uniformly dispersed.Energy-dispersive spectroscopy indicates the strongest Ba2+signal and the lowest Na+residue.This study demonstrates that integrating the gas tank into the energy-storage piezoelectric pump increases the output back pressure from 5 207 Pa to 10 021 Pa,significantly improving the pump's ability to drive high-resistance microchannels.Moreover,the synergistic effect of the piezoelectric drive and the spiral airfoil baffle structure contributes more to the improvement of mixing efficiency than merely changing the channel geometry.This study can provide reliable technical support for the rapid preparation of nanomaterials.关键词
压电泵/螺旋微通道/微混合器/储能气罐Key words
piezoelectric pump/spiral microchannel/micromixer/energy-storage gas tank分类
信息技术与安全科学引用本文复制引用
唐新,高文静,魏启凡,邝铭,黄亚冬,黄俊..压电驱动螺旋微通道混合器的设计及试验研究[J].燕山大学学报,2026,50(4):301-307,7.基金项目
国家自然科学基金资助项目(52206045) （52206045）
