声控无阀压电喷流泵

Non-valve piezoelectric fountain pump by sound control circuit

提出了一种声控无阀压电喷流泵,利用声控电路控制压电泵开启、关闭并控制其喷流状态,实现了无需信号发生器而直接驱动压电泵工作。阐述了声控电路设计结构和工作机理,设计并加工了声控振荡电路和声控开关电路板,并与无阀压电喷流泵匹配进行了系统调试。实验结果表明:压电泵喷流状态随外界声音频率、振幅变化而变化,声音频率越高、振幅越大,压电泵喷流高度增高,出水量增大;当声音频率与压电泵基频产生共振时,压电泵达到最佳喷流效果。

／A kind of non-valve piezoelectric fountain pump by sound control circuit was presented. The sound control circuit was used for adjusting the non-valve piezoelectric pump to open or to close and for controling the its fountain so that the pump could be drived directly without a signal generator. The working principle and design structure on the sound control circuit were introduced and the sound control oscillating and switching circuit boards were designed and manufactured. With combining to the non-valve piezoelectric fountain pump, the system adjustment was carried out. The experimental results indicate that quency and oscillatio the hight and rate of sound frequency and the fountain stat n amplitude. Th outflow are. Th the basic freque e of piezoelectric pump changes along with the outside sound free higher sound frequency and amplitude are, the higher and faster e piezoelectric pump will obtain the best spraying result when the ncy of piezoelectric pump create a resonance.