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Multi-bluff body composite valve-less piezoelectric pump

A valveless piezoelectric pump and bluff body technology, which is applied to the components, pumps, and pump elements of the pumping device for elastic fluids to achieve the effects of reducing backflow, easy liquid feeding, and easy liquid discharge.

Inactive Publication Date: 2018-05-18
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the current piezoelectric pumps, the present invention proposes a variety of bluff body composite valveless piezoelectric pumps

Method used

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  • Multi-bluff body composite valve-less piezoelectric pump
  • Multi-bluff body composite valve-less piezoelectric pump
  • Multi-bluff body composite valve-less piezoelectric pump

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specific Embodiment approach

[0027] like figure 2 As shown, a variety of bluff body composite valveless piezoelectric pumps include: a fastening nut 1, a lower pump body 2, multiple hook-shaped bluff bodies 3, a sealing ring 4, a middle pump body 5, a sealing rubber ring 6, and an upper cover 7 , a fastening screw 8, and a piezoelectric vibrator 9.

[0028] like figure 2 As shown, the upper cover 7 is provided with a wire hole 7-1 and the fixing flange 7-2 is provided with the wire hole 7-1 for connecting the wires to the piezoelectric vibrator 6 .

[0029] like image 3 As shown, the lower pump body 2 is provided with a liquid inlet 2-1 and a liquid outlet 2-2, and the lower pump body 2 is provided with a semicircular shell bluff body 2-2 at the liquid inlet 2-1 and the liquid outlet 2-2. 5. 2-5 rounded corners of the semicircular shell bluff body.

[0030] like image 3 As shown, the liquid inlet 2-1 and the liquid outlet 2-2 of the lower pump body 2 adopt a conical structure, the conical structu...

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Abstract

The invention discloses a multi-bluff body composite valve-less piezoelectric pump which comprises a pump cover, a piezoelectric vibrator, hook-type bluff bodies, a middle pump body and a lower pump body with semicircle shell bluff bodies. A liquid outlet runner and a liquid inlet runner of the lower pump body are provided with the semicircle shell bluff bodies. According to the multi-bluff body composite valve-less piezoelectric pump, the piezoelectric vibrator applies electric signals, the piezoelectric vibrator generates stretchable deformation, liquid enters a liquid inlet when the piezoelectric vibrator deforms to the pump cover, and the liquid is discharged from a liquid outlet when the piezoelectric vibrator deforms to the lower pump body; and when the liquid is sucked into the lower pump body, backflow happens at the liquid outlet. The multi-bluff body composite valve-less piezoelectric pump is provided with the multiple hook-type bluff bodies, front and back taper structures and the semicircle shell bluff bodies, the backflow effect is reduced, and the flow of the valve-less piezoelectric pump is improved.

Description

technical field [0001] The invention relates to a composite valveless piezoelectric pump of multiple bluff bodies, which belongs to the field of fluid machinery. Background technique [0002] Nowadays, in the piezoelectric pump industry, most of the pumps are piezoelectric pumps with valves. The pumps with valves are large in size, which is not conducive to the application in small spaces, and the pumps without valves are piezoelectric pumps. The backflow of the electric pump is more serious. Most valveless piezoelectric pumps are realized by a bluff body. The bluff body has a hemispherical shape and a cone shape. The pump does not control the angle of the inlet and outlet of the bluff body, the structure of the bluff body of the valveless piezoelectric pump needs to be improved, and the pumping flow rate of the valveless piezoelectric pump also needs to be improved, so a variety of bluff body composite valveless pumps have been invented. piezoelectric pump. Contents of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B43/04F04B53/00F04B53/16
CPCF04B43/0027F04B43/046F04B53/00F04B53/16
Inventor 何丽鹏李威杨丽梅黄勇赵达
Owner CHANGCHUN UNIV OF TECH
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