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Multi-piezoelectric-drive circulation active distribution pump

A distributing pump and circulating technology, applied in the field of circulating active distributing pump, can solve problems such as increasing the complexity of the system, and achieve the effect of reducing the number, simplifying the system structure, and improving the output power

Active Publication Date: 2015-06-17
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the passive distribution type piezoelectric drive pump, the output flow of the pump is not adjustable in one direction due to the use of a one-way valve; while in the active distribution type piezoelectric drive pump, the active distribution valve usually requires additional drive components, increasing system complexity

Method used

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  • Multi-piezoelectric-drive circulation active distribution pump
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  • Multi-piezoelectric-drive circulation active distribution pump

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Embodiment Construction

[0042] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0043] The present invention is a multi-piezoelectrically driven circulating active distribution pump, such as figure 1 As shown, it includes four piston-valve modules and the oil circuit connecting the four piston-valve modules.

[0044] The four piston-valve modules are piston-valve module A, piston-valve module B, piston-valve module C, and piston-valve module D. The four piston-valve modules have the same structure, and each piston-valve module has four oil through holes, respectively the first oil through hole, the second oil through hole, the third oil through hole and the fourth oil through hole;

[0045] The oil holes of the four piston-valve modules are connected through oil passages, the first oil hole 1 on the piston-valve module A is connected to the third oil hole 7 on the piston-valve module B, and the piston-valve module B The first o...

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Abstract

The invention discloses a multi-piezoelectric-drive circulation active distribution pump and belongs to the technical field of piezo-hydraulics. The multi-piezoelectric-drive circulation active distribution pump mainly comprises four piston-valve modules and an oil circuit for connecting the four modules. The four piston-valve modules include a piston-valve module A, a piston-valve module B, a piston-valve module C and a piston-valve module D. The four piston-valve modules are the same and are mutually connected through the oil circuit. Each piston-valve module comprises a piston operation area and a reversing valve operation area, which are driven by a stacked piezoceramic driver simultaneously. The stacked piezoceramic drivers are driven by sinusoidal signals to sinusoidally reciprocate so as to drive the piston-valve modules to operate. The multi-piezoelectric-drive circulation active distribution pump driven by multiple stacked piezoceramic drivers allows for continuous oil suction and drainage and reduced flow pulsation. In addition, system output efficiency is increased, and output flow and output direction are controlled conveniently.

Description

technical field [0001] The invention relates to a multi-piezoelectrically driven circulating active distribution pump, which belongs to the field of piezoelectric-hydraulic technology. Background technique [0002] With the continuous improvement of the manufacturing process of piezoelectric ceramic materials, its performance has also made great progress. At present, piezoelectric ceramic drivers have been widely used in the field of high-speed precision drives. Utilizing the advantages of high frequency response, high power density, and immunity to electromagnetic interference of piezoelectric ceramic drives, combining piezoelectric drive technology with traditional hydraulic technology can greatly improve the performance of traditional hydraulic systems, thus attracting many research attentions. Piezoelectrically driven pumps, servo valves and actuators were developed. [0003] At present, most of the common piezoelectric driven pumps use a single piezoelectric element to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/22
Inventor 焦宗夏张睿
Owner BEIHANG UNIV
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