Lever delta amplified piezoelectric stack pump

Abstract

The invention discloses a lever triangular amplification piezoelectric stack pump. The lever triangular amplification piezoelectric stack pump is characterized in that a lever triangular amplification mechanism is mounted inside a pump body; the structure of the lever triangular amplification mechanism is symmetrical; the top of the lever triangular amplification mechanism is in contact with a vibrating arm; the lever triangular amplification mechanism comprises two symmetrical triangular arms, two symmetrical lever arms, two symmetrical supporting seats and a driving arm; the tops of the triangular arms are hinged; an included angle between the triangular arms is 180 degrees or below; the outer ends of the lever arms are hinged to the bottoms of the triangular arms; the inner ends of the lever arms are hinged to the supporting seats; the supporting seats are fixedly connected with the pump body; the driving arm is in contact with a piezoelectric stack; and the two ends of the driving arm are connected with the middle parts of the corresponding lever arms through connecting rods. According to the lever triangular amplification piezoelectric stack pump, the vibration amplitude of the vibrating arm is amplified through the lever triangular amplification mechanism, the lever triangular amplification mechanism has a triangular structure and a lever structure inside which can amplify vibration, and a two-stage amplification effect is achieved, so that the vibration amplitude of the vibrating arm is strengthened, the amplification effect is obvious, the pumping flow of the pump is increased, and the structure is relatively simple.

Description

technical field [0001] The invention relates to a piezoelectric pump, in particular to a lever triangular amplification piezoelectric stack pump. Background technique [0002] Drip irrigation is one of the most effective irrigation technologies at present. It has important promotion value and application prospect for alleviating the shortage of water resources. As the core component of the drip irrigation system, although the existing irrigators can basically meet the drip irrigation needs of crops, there are structural problems. Complicated, the dripper is easy to block and the flow is difficult to control accurately. The valveless piezoelectric pump has the advantages of simple structure, good controllability of small flow rate, and easy miniaturization. It has broad application prospects, especially in the field of drip irrigation, and will become a new fluid pumping method. [0003] However, there are many deficiencies in existing piezoelectric pumps: First, existing pi...

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Problems solved by technology

[0004] Aiming at problems such as the existing piezoelectric stack pump has no obvious amplification effect, cannot meet the requirements of large flow output, and has caused wear and tear, the present invention proposes a lever triangular amplification piezoelectric stack pump

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