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Oblique conic gate valve

A gate valve and inclined cone technology, applied in the field of inclined cone gate valves, can solve the problems of blocking the sealing surface of the valve, reducing the sealing performance of the butterfly valve, and poor sealing performance of the butterfly valve, so as to achieve enhanced sealing performance, long service life and good sealing performance Effect

Inactive Publication Date: 2007-06-27
倪益海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the biggest disadvantage of these two kinds of valves is: because the solid particles or suspended substances in the fluid are easy to wear and block the sealing surface of the valve, the fluid will leak or leak when the valve is completely closed, especially when transporting toxic and harmful Fluid leakage will not only cause environmental pollution and fluid loss, more importantly, it will also cause harm to personal or property
Because the particles in the fluid (such as mud and sand) directly scour the annular sealing surface, the sealing performance of the butterfly valve is gradually reduced; the floating objects in the fluid (such as hair) are also easily entangled on the annular sealing surface, making it difficult for the valve disc to close completely. cause leakage or leakage
Therefore, butterfly valves have poor sealing performance and are often used for fluid delivery in low-pressure pipelines.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] As shown in Figures 1-2, the valve seat 15 is placed in the hole at the outlet end of the valve body 11, so that the center of the standard oval ring of the valve seat 15 coincides with the center of the valve body 11, and the other end of the valve seat 15 is aligned with the valve body 11. The flange welding (metal) or welding (non-metallic), the valve core 10 and the gate plate 12, the elastic pad 14 and the supporting plate 13 are connected together with multiple bolts, and the slide plate on the upper part of the valve core 10 is inserted into the concave hole of the valve body 11. The groove is pushed to the bottom of the valve body 11, and the elastic pad 14 is attached to the valve seat 15, and one end of the valve core 10 is threadedly connected to the valve stem 8. Place the gasket 9 and the valve cover 7 on the flange sealing surface of the branch pipe of the valve body 11 in sequence, and fasten the valve body 11 and the valve cover 7 with fasteners. Insert ...

Embodiment 2

[0034] As shown in Figure 3, the valve seat 15 is placed in the water outlet hole of the valve body 11, and a plurality of backing rings 16 are placed between the other end of the valve seat 15 and the valve body. After the joint surface is worn, remove a thin cushion surface, and then install the valve seat to compensate, and the contact will be good.

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Abstract

A gate valve with oblique poppet used as high-pressure valve and large-diameter valve for the pipeline to deliver the toxic and harmful medium or the medium containing less particles is composed of valve cover, valve seat body, and valve core module. It features that the contact surface between gate plate and valve seat is a tightly closed oblique one and the pressure of delivered medium is used to improve its sealing performance.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an inclined cone gate valve. Background technique [0002] There are many types of valves for fluid transportation on the market, but the valves used in large-caliber pipeline transportation are mainly gate valves and butterfly valves. But the biggest disadvantage of these two kinds of valves is: because the solid particles or suspended substances in the fluid are easy to wear and block the sealing surface of the valve, the fluid will leak or leak when the valve is completely closed, especially when transporting toxic and harmful When the fluid is leaking, running, emitting, dripping, and leaking will not only cause environmental pollution and fluid loss, but more importantly, it will also cause harm to people or property. Therefore, it is extremely important to develop valves with good tightness, no clogging and corrosion resistance for fluid transportation. [0003] The sealin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/00F16K1/36F16K1/42
Inventor 倪益海
Owner 倪益海
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