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Double-resonance piezoelectric pump

A piezoelectric pump and double-resonance technology, applied in pumps, pumps with flexible working elements, liquid variable capacity machinery, etc., can solve problems such as poor pumping capacity, contact wear pollution, poor consistency of pump valve action, etc., to achieve The effect of smooth pumping, strong action consistency and strong pumping capacity

Pending Publication Date: 2022-04-22
ZAOZHUANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the related art, the present invention provides a dual-resonance piezoelectric pump to solve the problems of poor pump valve action consistency, contact wear pollution, and poor pumping capacity in current piezoelectric pumps.

Method used

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Embodiment Construction

[0040] The following will be combined with the accompanying drawings in an embodiment of the present invention, the technical solution in the embodiment is a clear and complete description. Obviously, the described embodiments are only part of the embodiments of the present invention, and not all embodiments. Based on embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work, are within the scope of protection of the present invention.

[0041] In the description of the present invention, it is to be understood that the term "center", "horizontal", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and other indications of the orientation or position relationship is based on the orientation or position relationship shown in the drawings, only to facilitate the description of the present invention and simplify the description, and not...

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Abstract

A double-resonance piezoelectric pump comprises a pump body, a diaphragm, a piezoelectric excitation element, a transmission part, a pump core, a fixing part, a first elastic component and a second elastic component. In the embodiment of the invention, the piezoelectric excitation element transmits vibration through the elastic component, so that the pump core and the valve block alternately open and close the liquid outlet and the liquid inlet, and the transmission piece drives the diaphragm to move so as to change the volume of the first cavity, so that liquid is sucked in and pumped out; the regular change of the volume of the pump cavity and the opening and closing of the valve structure are mutually coordinated and run in pace through the inherent motion law of second-order longitudinal vibration of the mechanical structure, the situation that the liquid outlet and the liquid inlet are closed at the same time cannot occur, the motion consistency is high, pumping is stable, and the service life is long. The pump core and the valve block are in soft contact with the liquid outlet and the liquid inlet and are not prone to abrasion, the diaphragm sucks and pumps liquid through volume change, and the whole pumping capacity of the piezoelectric pump is high.

Description

Technical field [0001] The present invention belongs to the technical field of hydraulic conveying equipment, in particular to a double resonant piezoelectric pump. Background [0002] The pump is a key component of the flow system, according to the different pumps of the driving mechanism can be divided into piezoelectric drive, electrostatic drive, electromagnetic drive, thermal drive and shape memory alloy drive. Different drive mode pumps have their own characteristics and application areas, piezoelectric pumps because of its compact structure, good response characteristics, no electromagnetic pollution, easy miniaturization, flow control precision and other advantages in aerospace, precision instruments, biochemistry, medical and micro-electromechanical fields have been widely used. [0003] Chinese patent 200710055683.0, 200710193504.X the electrostrictivity of the piezoelectric material forms a regular change in the volume of the pump cavity, with the active or passive op...

Claims

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Application Information

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IPC IPC(8): F04B43/04
CPCF04B43/046
Inventor 胡笑奇杜辉胡彩旗徐伟
Owner ZAOZHUANG UNIV
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