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Hard sealing ball valve

A hard-sealing, ball valve technology, applied in valve devices, cocks including cut-off devices, engine components, etc., can solve the problems of complex ball valve structure, inability to adapt to high temperature and ultra-high temperature conditions, and achieve the effect of simplifying the structure

Inactive Publication Date: 2012-06-27
浙江欧斯特泵阀有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is to improve the problem that the structure of the ball valve in the background technology is complex and cannot be used in high temperature and ultra-high temperature conditions.

Method used

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  • Hard sealing ball valve
  • Hard sealing ball valve
  • Hard sealing ball valve

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Embodiment Construction

[0014] A hard-sealed ball valve of the present invention will be further described below in conjunction with the accompanying drawings.

[0015] Such as figure 1 As shown in , a hard-sealed ball valve of this embodiment includes a valve body 1, a metal valve seat 4 installed on the valve body 1, and a spherical valve core 5 sealingly fitted with the valve seat 4. The valve seat 4 is one end The shape of the bell mouth is large and one end is small. The shape of the bell mouth enables elastic deformation of the valve seat 4 itself. The large mouth end 3 of the bell mouth is directly sealed with the valve body 1. The small mouth end 6 of the bell mouth It can be directly sealed with the valve core. The large mouth end 3 of the bell mouth is ground to make the end surface smooth and smooth, and is directly installed on the valve body 1 and is tightly fitted with the valve body 1. There is an interference between the small mouth end 6 of the bell mouth and the spherical valve cor...

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PUM

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Abstract

A hard sealing ball valve comprises a valve body, a metal valve seat arranged on the valve body and a ball-shaped valve core in sealing fit with the valve seat. The valve seat is elastic and in a horn mouth shape with one end large and the other end small, a channel in the valve body is smaller than a cavity, a step structure is formed between the channel and the cavity, the large end of the horn mouth abuts against at the position of a concave corner of the step structure and is directly in sealing fit with the valve body, and the small end of the horn mouth can be directly in sealing fit with the valve core. The hard sealing ball valve is provided with the elastic metal valve seat in direct sealing fit with the valve body, uses self elasticity to be in sealing fit with the valve core, simplifies structure and is applied to using environments of high temperature or even superhigh temperature.

Description

technical field [0001] The invention relates to a ball valve, in particular to a metal hard-sealed ball valve. Background technique [0002] Ordinary metal hard-sealed ball valves are mainly composed of ball valve core, valve seat, valve body, valve stem and other components. When the liquid contains granular solids, it is more prone to tension and jamming. Generally, a flexible spring and a sealing ring are installed between the valve seat and the valve body, and the elastic force of the spring is used to achieve the valve seat and the valve core. Sealing fit, but due to the limitation of the temperature resistance of the spring and the sealing ring, the metal hard-sealed ball valve with this structure cannot be used in high temperature, high pressure and supercritical working conditions. In addition, the above structure is more complicated, the installation cost is high and it is easy to damage. Contents of the invention [0003] The problem to be solved by the present ...

Claims

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Application Information

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IPC IPC(8): F16K5/06F16K5/20
Inventor 叶展磊李建忠卓曙光
Owner 浙江欧斯特泵阀有限公司