A valve cavity integrated piezoelectric pump

Abstract

The invention provides a valve cavity integrated piezoelectric pump comprising an upper cover plate, a cavity, a lower cover plate, a piezoelectric vibrator, a water inlet pipe and a water outlet pipe. The cavity comprises a valvular valve, a pump cavity, a water collecting hole and a connecting pipe. The valvular valve is a one-way valve and mounted in the pump cavity. The connecting pipe is connected with the pump cavity and the water collecting hole. The upper cover plate is provided with a hole, and the hole and the pump cavity correspond in position. The piezoelectric vibrator is fixed in the hole and connected with the hole in a sealed mode. The lower cover plate is provided with a water inlet and a water outlet, and the water inlet and the water collecting hole correspond in position. The water outlet and the pump cavity correspond in position. One end of the water inlet pipe is in sealing connection with the water inlet, and one end of the water outlet pipe is in sealing connection with the water outlet. The upper cover plate, the cavity and the lower cover plate are connected in a sealed mode. According to the valve cavity integrated piezoelectric pump, the valve and pump cavity integrated structure is adopted, the effective space of the cavity can be increased, the pump body structure is diminished, the pump flow is increased, the advantages of a piezoelectric pump with a valve and a piezoelectric pump without a valve are combined, the advantage that the piezoelectric pump with the valve is large in flow is retained, and the disadvantage that the structure is too complex is avoided.

Description

technical field [0001] The invention belongs to the research field of piezoelectric pumps, and in particular relates to a valve cavity integrated piezoelectric pump. Background technique [0002] At this stage, piezoelectric pumps can be divided into valved piezoelectric pumps and valveless piezoelectric pumps according to whether they have valves. A piezoelectric pump with a valve can be understood as a pump in which the fluid in the pump chamber is intermittently or periodically communicated with the fluid outside the chamber during the working process of the pump, and the one-way flow of the fluid is controlled by an active valve or a driven valve. Due to the small structural size of piezoelectric pumps, most of the required valve bodies are small, which brings great difficulties to the production and assembly of piezoelectric pumps with valves. At the same time, it will also increase the structural size of piezoelectric pumps. It is beneficial to take advantage of the a...

AI Technical Summary

Problems solved by technology

Aiming at the shortcomings of existing valved piezoelectric pumps with complex structures and valveless piezoelectric pumps with small flow rate, the present invention combines the two to give full play to their respective advantages, make up for the shortcomings of existing piezoelectric pumps, and make them meet the requirements of process and It also provides a new type of structure for the research of piezoelectric pumps

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