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High-temperature-resistant ball valve

A high-temperature, ball valve technology, applied in valve devices, cocks including cut-off devices, engine components, etc., can solve problems such as poor sealing effect, affecting sealing performance, and failure of sealing inserts, achieving simple structure and improving sealing effect. , easy to achieve effect

Inactive Publication Date: 2012-10-31
GASKET SUZHOU VALVE COMPONENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because under high temperature conditions, the non-metallic sealing insert used for sealing in general ball valves will fail, so the existing high temperature ball valves will use a sealing protrusion 6 on the valve seat to directly contact with the ball for sealing, but due to the contact Both sides are metal, and neither is elastic, so the sealing effect is not very good. In addition, the impurities in the fluid will flow to the seal along the direction shown in the figure, which will seriously affect the sealing performance

Method used

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Examples

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Embodiment 1

[0019] Embodiment one: see image 3 , 4 As shown, a high temperature resistant ball valve includes a valve body 7, a valve seat 8 and a ball 9, a spring 10 is provided between the valve body 7 and the valve seat 8, and a spring 10 is provided between the valve body 7 and the valve seat 8. O-shaped sealing ring 11, a slot is opened on the valve seat 8, and a sealing insert is provided in cooperation with the slot, and a sealing protrusion 12 is also provided on the valve seat 8, and the end surface of the sealing protrusion 12 Conflicting with the surface of the ball 9 constitutes the sealing surface of the ball valve, a foreign matter storage groove 13 is provided on the front side of the sealing surface, and the end surface of the sealing protrusion 12 is a slope structure.

[0020] When the ball valve is in use, when the fluid flows to the sealing surface in the ball valve, the impurities in the fluid will fall into the impurity storage tank on the side of the sealing surfa...

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Abstract

The invention discloses a ball valve which comprises a valve body, a valve seat and a ball body, wherein a spring is arranged between the valve body and the valve seat; an O-shaped seal ring is arranged between the valve body and the valve seat; an insertion slot is formed on the valve seat; a seal plug-in element is matched with the insertion slot; the valve seat is also provided with a seal protrusion; the end surface of the seal protrusion butts against the surface of the ball body so as to form a seal surface of the ball valve; and the front side of the seal surface is provided with an impurity containing groove. According to the invention, the impurity containing groove is formed on the valve seat, thus impurities can fall into the impurity containing groove, the seal effect can not be influenced, and because the impurity containing groove is formed, the seal protrusion has elasticity, and further the seal effect of the ball valve is improved.

Description

technical field [0001] The invention relates to a valve, in particular to a high temperature resistant ball valve. Background technique [0002] The ball valve is one of the most widely used valves. Its working principle is the same as that of the plug valve. It is opened and closed by rotating the valve core, but it is lighter than the plug valve and relatively small in size. It can be made into a large-diameter ball valve. The ball valve has reliable sealing, simple structure and convenient maintenance. The sealing surface and the ball are often in a closed state, which is not easy to be eroded by the medium, so it is widely used in petroleum, chemical, metallurgical and other industries. [0003] Existing ball valves mainly include two kinds of fixed ball valves and floating ball valves. The sphere of the fixed ball valve is fixed, and the sphere is provided with a support shaft, and the support shaft is equipped with a bearing. Therefore, after being subjected to medium...

Claims

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Application Information

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IPC IPC(8): F16K5/06F16K5/20F16K5/08
Inventor 罗伯托・斯卡蒂尼
Owner GASKET SUZHOU VALVE COMPONENTS
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