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Improved piston-type control valve

A control valve and piston-type technology, which is applied in the field of improving piston-type control valves, can solve the problems affecting the service life of the valve body and the damage of communication holes, etc., and achieve the effects of compact structure, reduced number of parts, and reduced noise

Inactive Publication Date: 2014-09-24
GUANGDONG YONGQUAN VALVE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The generation of cavitation will cause damage to the inner surface of the communication hole, thus affecting the service life of the valve body

Method used

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Embodiment Construction

[0020] In the following, the present invention will be further described with reference to the accompanying drawings and specific implementations, so as to more clearly understand the technical ideas claimed by the present invention.

[0021] Such as figure 1 , 2 Shown here is an improved piston control valve of the present invention, including a valve body 1, a piston cylinder 8, a piston 5, and a spring 10 mounted on the valve body 1; the valve body 1 is formed with a liquid inlet channel 15 and The liquid outlet channel 16 is provided with a communication hole between the liquid inlet channel 15 and the liquid outlet channel 16; the upper end of the piston 5 and the piston cylinder 8 are dynamically sealed and matched, and the piston 5 and the piston cylinder 8 cooperate to form a movable cavity The piston 5 can move between the closed position that blocks the opening of the upper end of the communicating hole and the open position away from the communicating hole; the spring 1...

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Abstract

The invention discloses an improved piston-type control valve. The improved piston-type control valve comprises a valve body, and a piston cylinder, a piston and a spring which are arranged on the valve body, wherein a liquid inlet channel and a liquid outlet channel are formed in the valve body; a communicating hole is formed between the liquid inlet channel and the liquid outlet channel; the upper end of the piston is matched with the piston cylinder in a dynamic sealing way; the piston is matched with the piston cylinder to form a movable cavity; the piston can move between a closed position for plugging the opening at the upper end of the communicating hole and an open position far away from the communicating hole; an anti-cavitation cover is arranged at the lower end of the piston. According to the improved piston-type control valve, the anti-cavitation cover is arranged on the piston, so that the phenomenon of cavitation in the communicating hole can be reduced, or even be prevented; moreover, according to the improved piston-type control valve, the piston can also be opened and closed more flexibly, so that the abrasion of the valve seat and the piston cylinder can be reduced, and the service life of the valve seat and the piston cylinder can be prolonged; in addition, a valve cover can also be replaced by reasonably arranging the position of the piston cylinder, so that the cost of machining and manufacturing is reduced.

Description

Technical field [0001] The invention relates to an improved piston type control valve. Background technique [0002] Control valves are widely used in pipe network systems such as urban liquid supply and drainage, building liquid supply and drainage, industrial liquid supply and drainage, water conservancy and agricultural irrigation liquid supply and drainage, fire fighting liquid supply and drainage, HVAC and other pipe network systems. The control valve includes a valve body and a piston located in the valve body. The valve body is provided with a liquid inlet channel and a liquid outlet channel. A communication hole is provided between the liquid inlet channel and the liquid outlet channel to communicate through the piston pair. The hole is blocked and opened, so as to realize the blocking and communication of the liquid inlet channel and the liquid outlet channel. When the piston is in an open state, the fluid medium in the liquid inlet channel flows into the liquid outlet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/32F16K31/122
CPCF16K31/1221F16K47/023
Inventor 黎彪
Owner GUANGDONG YONGQUAN VALVE TECH
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