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Double-cone metal seal valve

A metal sealing and sealing ring technology, applied in the valve details, valve device, valve shell structure and other directions, can solve the problem of weakening the service life of the valve, and achieve the effect of increasing the service life, improving the sealing performance and reducing the opening and closing torque.

Inactive Publication Date: 2012-08-15
SANBORA VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the service life of such valves is severely reduced

Method used

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  • Double-cone metal seal valve
  • Double-cone metal seal valve
  • Double-cone metal seal valve

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Embodiment Construction

[0023] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0024] see figure 1 , figure 2 , the present invention mainly consists of valve body 1, support plate 2, valve ball 3, screw 4, valve stem 5, stuffing box 6, bracket 7, gasket 8, sealing ring 9, pressure ring 10, fixed ring 11 and valve seat 12 and other main components. The valve ball 3 is supported by the support plate 2 (one up and down respectively). The valve stem 5 is connected with the valve ball 3 through a flat groove to transmit torque. The valve seat 12 and the valve body 1 are fixed in the valve body by means of welding or expansion, and it is ensured that the medium will not leak along the outer circle of the valve seat. Connect the sealing ring 9, the pressure ring 10 and the fixing ring 11 to the valve ball 3 with screws 4 to...

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Abstract

The invention provides a double-cone metal seal valve which comprises a valve body with a runner, wherein a valve ball is arranged in the runner of the valve body; the valve ball is connected with a valve seat; a seal pair structure is arranged between the valve ball and the valve seat; the radial eccentricity of the rotary center of the valve body and the runner center of the valve body is e; the axial eccentricity of rotary center of the valve body and the seal surface of the valve seat is H; and the included angle of the central lines of the seal pair cone and the runner is alpha. The double-cone metal seal valve has the advantages of being good in seal performance, resistant in high temperature, long in service life, easy in manufacturing, convenient in maintenance, attractive in appearance and compact in structure and the like.

Description

technical field [0001] The invention relates to a ball valve, in particular to a double cone metal sealing valve with small torque and suitable for various temperatures. Background technique [0002] At present, ordinary ball valves adopt a piston seat structure, and the piston seat structure mainly has the following problems: [0003] 1: The seal between the valve seat and the valve body mainly uses non-metallic components such as O-rings and flexible graphite. Because flexible graphite requires a high preload specific pressure and is easily damaged during installation and use, it is difficult to establish a piston seal. Cavity, so it is easy to cause valve leakage, and the opening and closing torque is relatively large. However, O-rings cannot be used in high-temperature conditions, so the application occasions are limited. [0004] 2: Under the action of medium force and spring force, the sealing surface of the valve seat is close to the sealing surface of the ball. Th...

Claims

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Application Information

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IPC IPC(8): F16K5/06F16K5/08F16K27/06
Inventor 卓桂朝金成波罗起飞
Owner SANBORA VALVE