Isolating valve sealed by structural ceramic valve clack and metal elastic valve seat

A technology of elastic valve seat and ceramic valve, which is applied in the direction of lifting valve, valve device, engine components, etc., can solve the problems of affecting the sealing effect and service life, adhesive wear of sealing surface, large fluid resistance, etc., and achieves small operating torque and super Strong corrosion resistance, the effect of improving the service life

Inactive Publication Date: 2012-02-08
ZHEJIANG ZHENGHUA VALVE FACTORY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 1. The fluid resistance is large, and the force required for opening and closing is relatively large
[0012] 2. Because the materials of the two sealing surfaces are basically of the same family and the same species, there is a tendency of adhesive wear between the sealing surfaces during use, which affects the sealing effect and service life
[0013] 3. When the valve is open for a long time, the plane of the valve seat is easy to scale, which makes the seal not tight and damages the sealing pair when the valve is closed, resulting in internal leakage of the valve

Method used

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  • Isolating valve sealed by structural ceramic valve clack and metal elastic valve seat
  • Isolating valve sealed by structural ceramic valve clack and metal elastic valve seat
  • Isolating valve sealed by structural ceramic valve clack and metal elastic valve seat

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Embodiment Construction

[0045] The above-mentioned shut-off valve of the present invention, as figure 1 , composed of the first part A connecting the valve body 1 and the valve cover 2 and the second part B connecting the ceramic valve seat 3 and the valve stem 6, an upward inlet 15 arranged centered on the horizontal line of the valve body 1 and a cross The center of the downwardly curved outlet channel 12 is equipped with an elastic valve seat 10, 14 at the center of the step hole at the intersection, and an elastic valve seat 1-4 processed directly on the valve body by the stainless steel valve, in which the round One side of 10-2, 14-1, 1-4 is in contact with the end plane 3-1 of the ceramic disc 3 and is tightly fitted to form a sealing pair of the shut-off valve.

[0046] Please see figure 2 , connected to the ceramic disc 3 is a mandrel 9 with a taper 9-1 at the bottom, the upper part of the mandrel 9 is placed in the hole 6-5 at the end of the valve stem 6, and there is a cylindrical pin t...

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Abstract

The invention discloses an isolating valve sealed by a structural ceramic valve clack and a metal elastic valve seat. The isolating valve is mainly composed of a first part (A) and a second part (B), wherein the first part (A) is formed by connecting a valve body (1) with a valve cover (2), and the second part (B) is formed by connecting a ceramic valve seat (3) with a valve rod (6); an upward inlet (15) is arranged by taking the horizontal line of the valve body (1) as a center, and an outlet flow channel (12) downwardly bending relative to the cross center is arranged; a step hole center position of an intersection of the upward inlet (15) and the outlet flow channel (12) is equipped with elastic valve seats (10-14) and elastic valve seats(1-4) arranged on a body; and circular arcs (10-2,14-1,1-4) and sealing surfaces (3-1) of a ceramic valve clack (3) are contacted and closely fitted to form a sealing pair.

Description

technical field [0001] The invention belongs to valves, and in particular relates to the design of a shut-off valve sealed with a structural ceramic disc and a metal elastic valve seat. Background technique [0002] Globe valve is the second-ranked industrial general valve. It is used in pipelines second to gate valve. It is widely used. The opening and closing part of the valve is a plug-shaped disc, and the sealing surface is flat or conical. , the disc moves in a straight line along the center line of the fluid, and the movement form of the valve stem has a lifting rod type (the valve stem rises and falls, and the handwheel does not rise), and there is also a lifting and rotating rod type (the handwheel and the valve stem rotate together, and the nut is set on the on the valve body). Globe valves are generally used for full opening and full closing, and can also be used for regulation and throttling. [0003] The globe valve is a forced sealing valve, so when the valve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/36F16K1/48F16K1/42
Inventor 戴学祥王靖聪陈贤良王燊王爵义
Owner ZHEJIANG ZHENGHUA VALVE FACTORY
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