一种基于菱形环和对称同相放大杆的二级驱动压电堆栈泵

本发明涉及一种基于菱形环和对称同相放大杆的二级驱动压电堆栈泵，属于压电泵技术领域。包括压电驱动机构和双腔隔膜泵；压电驱动机构包括第一级位移放大机构、第二级位移放大机构、压电堆栈、一对质量块和一对附加质量块。第一级位移放大机构包括菱形放大环，压电堆栈固定设于菱形放大环的一对输入端之间；第二级位移放大机构包括同相放大杆，同相放大杆为U形杆，其中底边为直梁，两侧边为一对驱动臂；双腔隔膜泵固定安装于一对驱动臂的腰形孔处。本发明一方面解决了位移放大机构存在的支撑底座设计困难、振动能量浪费的问题，另一方面有效增大压电堆栈输出位移放大倍数，提升了泵的输出性能。 The invention relates to a two-stage driving piezoelectric stack pump based on diamond rings and symmetrical in-phase amplification rods, and belongs to the technical field of piezoelectric pumps. Comprising a piezoelectric driving mechanism and a double-cavity diaphragm pump. The piezoelectric driving mechanism comprises a first-stage displacement amplification mechanism, a second-stage displacement amplification mechanism, a piezoelectric stack, a pair of mass blocks and a pair of additional mass blocks. The first-stage displacement amplification mechanism comprises a rhombic amplification ring, and the piezoelectric stack is fixedly arranged between a pair of input ends of the rhombic amplification ring; the second-stage displacement