• CN: 11-2187/TH
  • ISSN: 0577-6686

›› 2010, Vol. 46 ›› Issue (24): 143-149.

• Article • Previous Articles     Next Articles

Theory and Experiment on the Soft Texture and Conning Shaped Single Valve Piezoelectric Pump with Different Interior and Exterior Taper

ZHANG Jianhui;GUO Zongxin;HUANG Yi;HU Xiaoqi;XIA Qixiao   

  1. Nanjing University of Aeronautics and Astronautics College of Mechanical & Electronic Engineer, Beijing Union University
  • Published:2010-12-20

Abstract: Mainly for two factors, traditional piezoelectric pump is not qualified for the delivering tasks in fields such as medical treatment, sanitation and health care. The one is that the two impacts occurring at valve opening and closing increase the death rate of living cells. The other, the turbulence and vortex generated by the non-valve type single-flow components in the valveless pump cause the the long chained high polymer to intertwine and fail. In order to reduce the effect of impacts and enhance the output flow and pressure, a novel passive valve piezoelectric pump is proposed, in which the soft texture and conning shaped single valve is used. Firstly, the structure implementation plan of the special valve is put forward; then the theoretical analysis on the deflection varying with the pressure on the surface of the valve is conducted; and finally, experiments for verifying the novel pump are carried out, which shows that under the conditions of 150 volts of voltage (peak to ground) and 475 Hz of driving frequency, the soft texture and conning shaped single valve piezoelectric pump with different interior and exterior slope produces as much as 170 mm head pressure. What is more, from the experiment we obtain the curves indicating the relationship between the driving voltage and the head pressure, and the conclusion can be drawn that within a certain range the head pressure rises along with the rising of the driving voltage.

Key words: Piezoelectric pump, Pressure difference, Valve with different interior and exterior taper

CLC Number: