Valve and vibrator integrated piezoelectric pump with valve

Abstract

The invention discloses an integrated valve piezoelectric pump of a valve-vibrator, belonging to the fluid mechanical field. Operating efficiency of the valve piezoelectric pump is higher than the operating efficiency of a non-valve piezoelectric pump, but a structure of the valve piezoelectric pump is more complicated than the structure of the non-valve piezoelectric pump, a pump cavity needs anenough space to assemble at least one of two valves for controlling a flow direction of a liquid. The integrated valve piezoelectric pump is characterized in that two piezoelectric vibrators (8) are arranged on a suction port and a discharge port of the pump in the same direction along the flow direction of the fluid; the piezoelectric vibrators are formed by combining a metal sheet with a through hole in the middle, an annular piezoelectric ceramic plate and the valves; the annular piezoelectric ceramic plate is bonded coaxially with the metal sheet, the valve is arranged coaxially on the other end relative to the metal sheet and the annular piezoelectric ceramic plate; or the valve and the piezoelectric ceramic plate are arranged on the same side, and the valve is arranged in a hole of the piezoelectric ceramic plate. Because of simple structure, the integrated valve piezoelectric pump can shorten volume of the pump cavity to a large extent and improve pump capacity.

Description

technical field [0001] The invention relates to a valve-vibrator integrated valve piezoelectric pump, which belongs to the field of fluid machinery. Background technique [0002] The pumps used for liquid transfer can be mainly classified into positive displacement pumps and rotary pumps. At present, piezoelectric pumps are mostly positive displacement pumps. Because of its high electromechanical conversion efficiency and no chemical and electromagnetic pollution, the piezoelectric pump has broad application prospects in the fields of medical treatment, sanitation, and health care. According to the presence or absence of pump valves, piezoelectric pumps are further classified into: piezoelectric pumps with valves and piezoelectric pumps without valves. The valved piezoelectric pump relies on the valve to control the flow direction of the liquid. When the pump works in the suction half cycle, the suction valve opens and the discharge valve closes; when the pump works in the...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a valved piezoelectric pump with a simple structure and no need to assemble two or at least one valve on the pump chamber, so as to overcome the above-mentioned defects that the volume of the pump chamber of the valved piezoelectric pump is not easy to reduce, and can A valve-vibrator integrated valve piezoelectric pump that greatly improves the pump flow rate

Images