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piezoelectric valve

A piezoelectric valve, piezoelectric drive technology, applied in the direction of valve details, valve device, valve operation/release device, etc., can solve the problem of unreliable piezoelectric valve action, so as to adapt to the fluid medium and have strong practicability , Stable and reliable effect

Active Publication Date: 2017-03-08
宿松王涛智能消防管家有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the high-pressure fluid application of the piezoelectric valve, it is possible that the piezoelectric actuator itself has deformation and output force due to the slight adhesion of the spool driven by the piezoelectric actuator, but there is no output displacement, making the piezoelectric valve unreliable action

Method used

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Embodiment Construction

[0024] The specific implementation of the piezoelectric valve of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] The piezoelectric valve of the present invention includes two parts: a valve and a drive circuit.

[0026] Figure 1a and Figure 1b Respectively shown as the sectional principle diagram of the valve part of the piezoelectric valve of the present invention, the piezoelectric valve is closed, in Figure 1a In, the balance hole is set in the spool, in Figure 1b In, the balance hole is set in the valve seat. exist Figure 1a and Figure 1b Among them, the valve is provided with a valve seat (4) and an upper cover (3), and a pilot hole (10), a main valve inlet (8) and a main valve outlet (9) are arranged in the valve seat (4), and the main valve The inlet (8) is the inlet of the connecting valve, the outlet of the main valve (9) is the outlet of the connecting valve, a flexible film main valve core (1) is...

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Abstract

The invention relates to a piezoelectric valve which comprises two portions including a valve body and a drive circuit. A piezoelectric driving piece (7) is arranged in the valve body, the drive circuit controls actions of the piezoelectric driving piece (7), and opening and closing of the valve body are controlled through the piezoelectric driving piece (7). The piezoelectric valve is characterized in that one end of the piezoelectric driving piece (7) is a free end, the other end of the piezoelectric driving piece (7) is a fixed end, the fixed end is fixed to a valve seat (4), multiple leads (13) controlling the piezoelectric driving piece (7) are lead out through the fixed end and are connected to the drive circuit, a sealing pad (12) is fixedly arranged at the free end of the piezoelectric driving piece (7), the valve body is closed when a pilot hole (10) is closed by the sealing pad (12), the valve body is opened when the pilot hole (10) is opened by the sealing pad (12) and further is communicated, a supporting device (6) is fixedly arranged in a valve element upper cavity (2), and a tiny gap is reserved between the supporting device (6) and the piezoelectric driving piece (7).

Description

technical field [0001] The invention relates to a piezoelectric valve, which includes a valve and a driving circuit. A piezoelectric driving piece is arranged in the valve. The driving circuit controls the action of the piezoelectric driving piece, and controls the opening and closing of the valve through the piezoelectric driving piece. Background technique [0002] Piezoelectric valves that use piezoelectric actuators to control valve switching have the advantages of low energy consumption, simple structure, and light weight. Existing piezoelectric valves usually use piezoelectric actuators (piezoelectric actuators are also a piezoelectric actuator. Actuator) directly controls the switching action of the spool, which can be realized in the case of controlling small flow or low pressure fluid, but in the case of controlling large flow or high pressure fluid (such as civil tap water), piezoelectricity is required The actuator can provide large output displacement and thrust....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/02
CPCF16K31/02
Inventor 肖国选
Owner 宿松王涛智能消防管家有限公司