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Conical surface hard seal ball valve

A hard seal and conical surface technology, which is applied to valve devices, cocks including cut-off devices, engine components, etc., can solve problems such as complex structure, poor sealing performance stability, and difficult manufacturing

Inactive Publication Date: 2005-03-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned existing hard-sealed ball valves are either complex in structure or difficult to manufacture, resulting in poor sealing performance stability.

Method used

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  • Conical surface hard seal ball valve
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  • Conical surface hard seal ball valve

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Experimental program
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Effect test

Embodiment Construction

[0009] The tapered surface hard-sealed ball valve includes a valve body 6, a ball core 12 is arranged in the valve body, and the ball core is respectively connected with the upper valve stem 8 and the lower valve stem 13, and an elastic washer 5 and a pressure plate are arranged between the valve seat 4 and the valve body 6. 2. The sealing surface of the ball core 12 and the sealing surface of the matching valve seat 4 are all conical surface structures. The upper valve stem 8 and the lower valve stem 13 form the rotation axis of the ball core 12, and the rotation axis of the ball core 12 is relative to the ball. The sealing surface of the core 12 has an eccentricity along the axial direction of the sealing surface of the ball core 12 and a radial direction perpendicular to the rotation axis of the ball core 12 .

[0010] Said core is hemispherical or whole spherical. The elastic washer 5 is O-shaped, C-shaped, U-shaped, V-shaped metal elastic washer, metal wound washer or non...

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Abstract

This invention disclose a kind of connoid stiff confinement ball valve. It includes the valve body, and there has the ball core in the valve body, the ball core connected with the upper valve handle and the lower valve handle separately, there has the elastic washer, the clamping bar between the valve base and the valve body, the sealing surface of the ball core and the paired sealing surface of the valve base is all the connoid structure, the axis of rotation is composed of the upper valve handle and the lower valve handle, there each has a eccentric center in the axial direction of the sealing surface of the ball core and is normal to the radial direction of the axis of rotation of the ball core. The invention is stiff confinement structure, it is high temperature resistant and heavy pressure resistant, and is antifriction, it can be used as the highheat and high-pressure pipe,the interceptor valve of the easy-abrade slurry media pipe or the pressure, flow control valve.

Description

technical field [0001] The invention relates to a ball valve, in particular to a tapered hard-sealed ball valve. Background technique [0002] The existing hard-sealed ball valves can be divided into two types in terms of motion principles: one is to make the ball valve in the open or closed position only by rotating the ball core; the other is to make the ball valve in the open or closed position by lifting and rotating the ball core. Open position, otherwise the ball valve can be in the closed position. Chinese patents ZL01219534.0 and ZL01212711.6 provide two single eccentric hemispherical hard-sealed ball valves, Chinese patent ZL98217043.2 provides an eccentric full-spherical hard-sealed ball valve, and Chinese patent ZL01247128.3 provides a ball core center High temperature wear-resistant ball valve concentric with the center of the rotating shaft. Regardless of whether the above-mentioned ball valve is a hemispherical type or a full spher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06
Inventor 刘汇源郑津洋柴为民
Owner ZHEJIANG UNIV
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