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Anti-rotation structure for stop valve

A technology of anti-rotation structure and stop valve, which is applied in the direction of lifting valve, valve device, engine components, etc., can solve the problems of affecting the service life of valve stem packing seal valve disc, damage, increasing cost, etc., so as to achieve simple and reasonable structure and ensure valve The effect of using and improving the service life

Inactive Publication Date: 2012-04-18
SHANGHAI LIANGGONG VALVE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When opening and closing, the valve stem of the globe valve rotates and lifts, especially when the valve is washed by the movement of the medium, the valve disc will rotate, which will affect the valve stem packing seal and the service life of the valve disc. Sometimes the valve will be damaged if it is not switched frequently. up
In the actual use of pipeline installations, the valves are frequently replaced to meet the use requirements, which will increase the cost

Method used

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  • Anti-rotation structure for stop valve
  • Anti-rotation structure for stop valve
  • Anti-rotation structure for stop valve

Examples

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Embodiment Construction

[0009] Hereinafter, the present invention will be more clearly and completely described with reference to a preferred embodiment and in conjunction with the accompanying drawings.

[0010] like figure 1 and figure 2 As shown, the anti-rotation structure of the globe valve of the present invention includes a valve body 1, a valve disc 2, a key 3, and a valve stem 4, the valve body 1 has a valve cavity 11, the key 3 is fixed on the valve disc 2, the valve disc 2 and the key 3 The valve flap assembly is composed, the valve flap 2 and the key 3 are installed in the valve cavity 11 of the valve body 1, wherein the key 3 abuts against the inner cavity groove of the valve body 1 to limit the rotation of the valve flap 2 in the valve cavity 11, and there are up and down Movement orientation.

[0011] like figure 2 As shown, the valve flap 2 has a T-slot 21 . like image 3 As shown, the valve stem 4 has a T-shaped head 41, the T-shaped head 41 is installed in the T-shaped groove...

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Abstract

The invention discloses an anti-rotation structure for a stop valve. The anti-rotation structure comprises a valve body, a valve clack, a key and a valve rod, wherein the valve body is provided with a valve cavity; the key is fixed on the valve clack; the valve clack and the key are arranged in the valve cavity of the valve body; the valve clack is provided with a T-shaped groove; and the valve rod is provided with a T-shaped head which is positioned in the T-shaped groove. By the anti-rotation structure for the stop valve, the requirements of use of a stop valve with a small caliber in a pipeline medium can be met; the aims of opening / closing the valve and preventing the rotation of the valve clack can be effectively fulfilled by the valve rod; the service of the valve can be reliably ensured; and the service life of the valve can be prolonged.

Description

technical field [0001] The invention relates to an anti-rotation structure, in particular to an anti-rotation structure of a globe valve. Background technique [0002] In the pipeline installation, for a small-diameter pipeline to control the conveying medium, a small-diameter stop valve is generally required. When opening and closing, the valve stem of the globe valve is injected with a rotating and lifting motion, especially when the valve is scoured by the movement of the medium, the valve disc will rotate, which will affect the valve stem packing seal and the service life of the valve disc. . In the actual pipeline installation, the valve is frequently replaced to meet the use requirements, which will increase the cost. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to provide an anti-rotation structure for a globe valve, which can satisfy the use of a small-diameter globe valve in a pipeline medium, and the valve ste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/48
Inventor 仇福康陈水灵姜琪
Owner SHANGHAI LIANGGONG VALVE FACTORY
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