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Method for controlling valve open and close using guiding valve

A technology of stop valve and pilot valve, which is applied in the direction of valve operation/release device, lift valve, valve details, etc., can solve the problems of short service life, high labor intensity, high production cost, etc., and achieve long service life, open and close Quick and easy installation

Inactive Publication Date: 2009-02-18
王德洪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the opening and closing of the stop valve by the rotation of the mechanical hand wheel is slow and labor-intensive, and remote control and automatic control cannot be performed; the former consumes a lot of power, while the latter is fragile and has a long service life. Short; Pneumatic requires motor and air pump, high sealing requirements, relatively high production cost
[0003] After market research and retrieval, no physical objects and related materials have been found that use pilot valves to control the opening and closing of globe valves.

Method used

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  • Method for controlling valve open and close using guiding valve
  • Method for controlling valve open and close using guiding valve

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the embodiments and with reference to the accompanying drawings: the main valve body in the accompanying drawings is square, and the present invention is not limited by the shape of the valve body, which is beneficial to the transformation and reuse of the original circular valve body. Compared with the shut-off valve rotated by the mechanical hand wheel, the present invention has the following parts increase and decrease and structural improvement:

[0020] (1) The handwheel, valve stem and lifting nut are cancelled;

[0021] (2) Change the cake-shaped spool to be a container-shaped spool (14), and the bottom of the spool has a bottom hole (15); kind. The container-shaped spool is beneficial to contain the fluid in the valve body, and the fluid pressure balance in the upper and lower flow chambers can be adjusted by the self-weight of the fluid in the container.

[0022] (3) Add a guide sleeve ...

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Abstract

The invention is a method for control ON-OFF of a shutoff valve by pilot valve, omitting the handwheel, valve rod, and lift nut; changing cake valve core into container valve core whose bottom is made with hole; adding guiding sleeve; adding press ring and seal ring; separating the original upper flow cavity into upper room, inner room and outer room; adding spring between the valve core and the upper cover; adding a flow guide pipe outside the main valve body; adding pilot valve on the flow guide pipe. And the improved shutoff valve can be widely applied to tap water, drinks, chemical industries, medicines, petroleum, natural gas and other industries for controlling fluid flow, having advantages of low cost, high sensitivity, installing convenience, being able to implement manual and remote control, programmable control, single control and group control, etc.

Description

technical field [0001] The invention relates to a control opening and closing method of a stop valve, which uses a pilot valve to control the opening and closing method of the stop valve. Background technique [0002] The opening and closing of the stop valve is often realized by mechanical handwheel rotation or electric or pneumatic devices. According to the structural characteristics of the above-mentioned several kinds of opening and closing devices, it is necessary to carry out corresponding structural modification and selection of related components to the controlled stop valve to complete. However, the opening and closing of the stop valve by the rotation of the mechanical hand wheel is slow and labor-intensive, and remote control and automatic control cannot be performed; the former consumes a lot of power, while the latter is fragile and has a long service life. Short; Pneumatic requires motor and air pump, high sealing requirements, and relatively high production c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/00F16K31/122
Inventor 王德洪
Owner 王德洪
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