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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 increasing the wear of seals, affecting the service life of ball valves, etc., to achieve fast opening and closing speed, increase service life and Stability and strong corrosion resistance

Inactive Publication Date: 2015-06-24
CHONGQING KEZHONG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the pre-tightening force also increases the wear of the seal, which affects the service life of the ball valve.

Method used

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  • Hard sealing ball valve

Examples

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Embodiment Construction

[0013] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0014] like figure 1 As shown, a hard-sealed ball valve includes a valve cover 2, the valve cover 2 and the valve body seat 4 form a closed structure, the valve cover 2 is provided with a valve stem 1, and one end of the valve stem 1 is provided with a second A transmission pin 11, the first transmission pin 11 is provided with a first transmission disc 3, the inner bottom end of the valve body seat 4 is provided with a support shaft 7, and the support shaft 7 is provided with a second transmission pin 6, A second transmission disc 5 is disposed on the second transmission pin 6 , and a ball 9 is disposed between the first transmission disc 3 and the second transmission disc 5 .

[0015] One end of the valve stem 1 ...

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Abstract

The invention relates to a hard sealing ball valve which comprises a valve cover. The valve cover and a valve body seat form a closed structure. The valve cover is provided with a valve rod. One end of the valve rod is provided with a first transmission pin. The first transmission pin is provided with a first transmission disc. The bottom end in the valve body seat is provided with a supporting shaft. The supporting shaft is provided with a second transmission pin. The second transmission pin is provided with a second transmission disc. A ball body is arranged between the first transmission disc and the second transmission disc. The hard sealing ball valve is simple in structure, low in manufacturing cost, high in opening / closing speed, little in wear and easy to operate.

Description

technical field [0001] The invention relates to a closed ball valve, in particular to a hard-sealed ball valve. Background technique [0002] Due to the good sealing characteristics of ball valves, they are widely used in petroleum, chemical industry, power stations, natural gas long-distance transportation pipelines, etc. The sealing of the ball valve is formed by the pre-set pre-tightening force between the ball and the valve seat plus the force caused by the fluid pressure on the sealing surface of the valve seat. Elastic elements, such as butterfly springs and columnar springs, are arranged between the parts. During the opening and closing process of the ball valve, the pretightening force always acts on the surface of the closing pair, so that the opening and closing torque of the ball valve is greater than that of other types of valves. At the same time, the pre-tightening force also increases the wear of the seal, which affects the service life of the ball valve. ...

Claims

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Application Information

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IPC IPC(8): F16K5/06
CPCF16K5/06
Inventor 陈勇
Owner CHONGQING KEZHONG MACHINERY
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