Pressure self-sealing stop valve

A cut-off valve and self-pressure technology, which is applied in the direction of lifting valves, valve devices, engine components, etc., can solve the problems of poor self-sealing effect and easy gaps at the sealing junction, and achieve good self-sealing effect and remarkable effect

Inactive Publication Date: 2019-05-03
NEWMAN (YANCHENG) VALVE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a self-pressure sealing stop valve, which has the advantages of good self-sealing effect, and solves the problem that the existing stop valve has poor self-sealing effect and easily produces gaps at the sealing junction

Method used

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Embodiment Construction

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0032] See Figure 1-6 , A self-pressure sealing shut-off valve, comprising a shut-off valve body 1, a valve seat 2 is arranged inside the shut-off valve body 1, and a valve cover 3 is threaded on the top of the shut-off valve body 1, because the inside of the valve cover 3 is provided with a sealing groove 14. The inside of the sealing groove 14 is sealingly connected with a sealing ring gasket 15 on the surface of the valve stem 4. Thi...

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Abstract

The invention discloses a pressure self-sealing stop valve. The pressure self-sealing stop valve comprises a stop valve body, wherein a valve seat is arranged in the stop valve body; a valve cover isin threaded connection with the top of the stop valve body; a valve rod is in threaded connection with inside of the valve cover; a connecting seat is movably mounted at the bottom of the valve rod; apressure compensation mechanism is arranged in the connecting seat. Distance for vertical movement of a valve plate is provided by the pressure compensation mechanism, so that water flow or air flowenters a self-pressure inlet circular groove through a water inlet and then flows into a self-pressure storage tank, force moving downwards is formed by the valve plate through the water flow or the air flow and drives a first inclined sealing ring and a second inclined sealing ring to tightly contact for sealing, the problems that an existing stop valve is poorer in self-sealing effect and is likely to produce gaps at the sealing joints are solved, the pressure self-sealing stop valve has the advantage of a good self-sealing effect, sealing performance of the stop valve is improved, and use safety of a user is guaranteed.

Description

Technical field [0001] The invention relates to the technical field of stop valves, in particular to a self-pressure sealing stop valve. Background technique [0002] There are many types of valves on the pipeline. The stop valve is a commonly used valve, which is used to control the cut-off of various fluid media such as air, water, steam, or adjust the flow rate. The opening and closing parts of the stop valve are plug-shaped The sealing surface of the valve plate is flat or conical, and the valve plate moves linearly with the lifting and lowering of the valve stem. The existing globe valve is mainly composed of a valve body, a valve cover, a valve stem and a valve plate. A gasket is arranged between the valve plate and the valve body to seal the medium and avoid the gap between the medium and the valve body along the valve plate. Leakage, but because the flowing medium in the valve often has a higher pressure, and this pressure generally acts on the joint between the sealing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/36F16K1/46
Inventor 孙晋朱金华高明汤雯娟
Owner NEWMAN (YANCHENG) VALVE MFG CO LTD
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