Side-suction pipe liquid mixing and conveying valve-less piezoelectric pump

Abstract

The invention discloses a side-suction pipe liquid mixing and conveying valve-less piezoelectric pump, and belongs to the field of liquid machines. Two identical piezoelectric vibrators are mounted on the upper side and the lower side of a pump body face to face, the upper end face and the lower end face of the pump body are each provided with a counter bore, and the piezoelectric vibrators are mounted in the counter bores. A pump cavity is formed by the two piezoelectric vibrators and a space in the pump body and is cylindrical. A supporting plate is arranged on a middle surface of the pump cavity, and the upper piezoelectric vibrator and the lower piezoelectric vibrator are symmetrical with respect to the middle surface. The supporting plate is located in the middle of the pump cavity, a step is arranged between the supporting plate and the bottom face of one counter bore, the thickness of the supporting plate is made to be smaller than the height of the pump cavity, and the thickness of a cross beam is smaller than the height of the pump cavity. A circular main outer pipe and a circular main inner pipe are arranged in the middle of the end face perpendicular to the supporting plate, and a first branch pipe and a second branch pipe are further arranged in the supporting plate. By means of the side-suction pipe liquid mixing and conveying valve-less piezoelectric pump, two kinds of liquid are conveyed while being mixed through the piezoelectric pump, and the two kinds of liquid flow out of a liquid source all the time, so that the defect of low efficiency caused by repeated flowing of the liquid in a flow channel while an existing valve-less piezoelectric pump works is overcome.

Description

technical field [0001] The invention relates to a valveless piezoelectric liquid mixing pump, which belongs to the field of liquid machinery. Background technique [0002] The valveless piezoelectric pump has simple structure, high electromechanical energy conversion efficiency and high reliability, and has broad application prospects in the fields of medical care, aerospace, micro-electromechanical and other fields in the future. The structure proposed in the present invention can combine the two functions of liquid mixing and transportation, so that the two liquids can be mixed while being input, and the two liquids overcome this shortcoming, so that the valveless piezoelectric pump can work , and during the mixed delivery process, the liquid always keeps flowing into the pump body without backflow, so it can be used in occasions where the liquid source does not allow reverse flow. Contents of the invention [0003] The purpose of the present invention is to make the pi...

AI Technical Summary

Problems solved by technology

The two liquids to be transported always flow out of the liquid source, which overcomes the defect of low efficiency caused by the repeated flow of liquid in the flow channel when the current valveless piezoelectric pump is working

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