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Ball valve

A technology for ball valves and valve seats, which is applied to valve details, valve devices, and valve housing structures, can solve the problems of small wall thickness at the end of the valve seat, poor sealing effect, and easy leakage, etc., to improve product qualification rate, Easy to process and improve the sealing effect

Inactive Publication Date: 2015-11-25
许建元
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the ball valve is installed, a seal is generally installed between the valve seat and the pipeline. Since the wall thickness of the end of the valve seat is equivalent to that of the pipeline, the contact area between the two and the seal is small, resulting in poor sealing effect and prone to Give way
The valve seat is generally cast, and because the wall thickness of the end of the valve seat is small, it is easy to be damaged during the production process, and the qualified rate is low

Method used

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] Figure 1~2 A ball valve according to one embodiment of the invention is schematically shown.

[0016] Such as figure 1 and figure 2 As shown, the ball valve of this embodiment includes a valve seat 1, a ball 2 and a valve stem 3, the ball 2 is located in the valve seat 1, the top of the ball 2 is connected to the valve stem 3, and the outer edge of the end of the valve seat 1 is provided with a diameter Toward the boss 4, the side of the boss 4 is on the same plane as the end face of the valve seat 1. The arrangement of the boss 4 increases the sealing area at the end of the valve seat 1, which can improve the sealing effect and prevent leakage.

[0017] The boss 4 and the valve seat 1 are integrally formed. The boss 4 and the valve seat 1 are integrally formed through a mould, which is convenient for processing and saves costs. The setting of ...

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Abstract

The invention discloses a ball valve which comprises a valve seat, a ball body and a valve rod. The ball body is located in the valve seat, and the top of the ball body is connected with the valve rod. A radial boss is arranged on the outer edge of each end portion of the valve seat, and the side faces of the bosses and the end faces of the valve seat are located on the same planes. The sealing areas of the end portions of the valve seat are increased through the bosses, the sealing effect can be improved, and leakage is prevented. The bosses enable the end portions of the valve seat to be stable in structure, and the product percent of pass is improved.

Description

technical field [0001] The invention relates to a valve, in particular to a ball valve. Background technique [0002] The closing part of the ball valve is a sphere, and the sphere rotates around the center line of the valve body to achieve opening and closing. Ball valves are widely used in pipelines, mainly for cutting, distributing and changing the flow direction of media. When the ball valve is installed, a seal is generally installed between the valve seat and the pipeline. Since the wall thickness of the end of the valve seat is equivalent to that of the pipeline, the contact area between the two and the seal is small, resulting in poor sealing effect and prone to Give way. The valve seat is generally formed by casting. Because the wall thickness of the end of the valve seat is small, it is easy to be damaged during the production process, and the qualified rate is low. Contents of the invention [0003] The object of the invention is a ball valve with good sealin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K27/06F16K5/08
CPCF16K27/067F16K5/08
Inventor 许建元
Owner 许建元
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