CN104089043B - 一种球阀的阀座结构 - Google Patents

一种球阀的阀座结构 Download PDF

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Publication number
CN104089043B
CN104089043B CN201410330033.2A CN201410330033A CN104089043B CN 104089043 B CN104089043 B CN 104089043B CN 201410330033 A CN201410330033 A CN 201410330033A CN 104089043 B CN104089043 B CN 104089043B
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valve seat
seat
main valve
auxiliary
spheroid
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CN104089043A (zh
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张清双
张静
施洪生
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Jiangsu Shentong Valve Co Ltd
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Jiangsu Shentong Valve Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0626—Easy mounting or dismounting means
    • F16K5/0636—Easy mounting or dismounting means the spherical plug being insertable from the top of the housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0663—Packings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0663—Packings
    • F16K5/0673—Composite packings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)
  • Lift Valve (AREA)

Abstract

一种球阀的阀座结构，包括阀座本体，阀座本体由主阀座和副阀座构成，主阀座安装在靠近球体的一侧，副阀座安装在靠近阀口的一侧，副阀座的轴向端面与阀体之间设置弹性装置，主阀座与副阀座抵接，主阀座上与副阀座相抵接的接触面为一外凸的弧面，副阀座上与主阀座相抵接的接触面为一内凹的弧面，主阀座与所述副阀座的径向端面与阀体之间设置密封件。本发明的有益效果是：主阀座与副阀座相抵接的接触面均为弧面，主阀座可以在弧面上转动，在安装球体时，可以将主阀座进行偏转，便于球体的安装，且可以与球体自动对中，在弹性装置的作用下，主阀座与球体紧密贴合，保证了阀门的零泄漏。

Description

一种球阀的阀座结构
所属技术领域
本发明涉及一种球阀的阀座，特别涉及一种用于上装式球阀的阀座结构。
背景技术
上装式球阀在球体安装时，需将两侧阀座向外移开一段距离，待球体安装到位后，两侧阀座复位，并与球体紧密接触，产生密封效果。而现有技术中通常采用的是在阀体上靠近阀座处装有两个调节棒，调节棒带动阀座左右移动，调节棒可以为内置式，也可以为外置式，外置式的调节棒会导致阀门产生两个泄漏点，内置式的调节棒会导致阀体结构变大，浪费成本，且调节棒结构加工复杂，装配不便。另外一种结构是采用内置式调节螺母来带动阀座的左右移动，这种结构在螺纹处易腐蚀、易生锈，密封性能差。
发明内容
为了克服现有上装式球阀的上述缺点，本发明提供一种装配简单，维修方便，且可以保证零泄漏的上装式球阀。
本发明解决其技术问题所采用的技术方案是，一种球阀的阀座结构，包括阀座本体，阀座本体由主阀座和副阀座构成，主阀座安装在靠近球体的一侧，副阀座安装在靠近阀口的一侧，副阀座的轴向端面与阀体之间设置弹性装置，主阀座与副阀座抵接，主阀座上与副阀座相抵接的接触面为一外凸的弧面，副阀座上与主阀座相抵接的接触面为一内凹的弧面，主阀座与所述副阀座的径向端面与阀体之间设置密封件。
所述外凸的弧面为一球面，内凹的弧面为一球面。
外凸的弧面为一外凸的抛物面，内凹的弧面为一内凹的抛物面。
主阀座与球体的密封面为软质密封面。
主阀座与球体的密封面为硬质密封面。
主阀座与球体的密封面为软硬复合密封面。
本发明的有益效果是：阀座本体由主阀座和副阀座构成，主阀座与副阀座抵接，主阀座与副阀座相抵接的接触面均为弧面，主阀座可以在弧面上转动，在安装球体时，可以将主阀座进行偏转，以扩大球体安装到阀座内的入口，便于球体的安装，球体安装到位的过程中，主阀座继续旋转，最终与球体自动对中，在弹性装置的作用下，主阀座与球体紧密贴合，保证了阀门的零泄漏。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是实施例的结构示意图；
图中：1.阀座本体；2.球体；3.阀口；4.阀体；5.外凸的弧面；6.内凹的弧面；7.密封件；8.密封面；9.弹性装置；101主阀座；102.副阀座。
具体实施方式
如图1所示，一种球阀的阀座结构，包括阀座本体1，阀座本体1由主阀座101和副阀座102构成，主阀座101安装在靠近球体2的一侧，副阀座102安装在靠近阀口3的一侧，副阀座102的轴向端面与阀体4之间设置弹性装置9，弹性装置9可以为弹簧，可以为碟簧，具有弹性预紧功能的结构都可以是弹性装置9；主阀座101与副阀座102抵接，主阀座101上与副阀座102相抵接的接触面为一外凸的弧面5，该外凸的弧面5可以为球面，也可以为抛物线面，副阀座102上与主阀座相抵接的接触面为一内凹的弧面6，该内凹的弧面6可以为球面，也可以为抛物面，但是，外凸的弧面5与内凹的弧面6相互接触的弧面角度必须大于或等于180度，以保证主阀座101的自动对中；主阀座101与所述副阀座102的径向端面与阀体3之间设置密封件7；主阀座101与球体2的密封面8可以为软质密封面，可以为硬质密封面，也可以为软硬复合密封面。
安装球体2时，先将主阀座101偏转，以扩大球体2安装到阀座内的入口，便于球体2的安装，球体2安装到位的过程中，主阀座101继续旋转，最终与球体2自动对中，在弹性装置9的作用下，主阀座101与球体2紧密贴合，保证了阀门的零泄漏。

Claims (6)

1.一种球阀的阀座结构，包括阀座本体，其特征在于：所述阀座本体由主阀座和副阀座构成，所述主阀座安装在靠近球体的一侧，所述副阀座安装在靠近阀口的一侧，所述副阀座的轴向端面与阀体之间设置弹性装置，所述主阀座与所述副阀座抵接，所述主阀座上与所述副阀座相抵接的接触面为一外凸的弧面，所述副阀座上与所述主阀座相抵接的接触面为一内凹的弧面，所述主阀座与所述副阀座的径向端面与阀体之间设置密封件。
2.如权利要求1所述的一种球阀的阀座结构，其特征在于：所述外凸的弧面为一球面，所述内凹的弧面为一球面。
3.如权利要求1所述的一种球阀的阀座结构，其特征在于：所述外凸的弧面为一外凸的抛物面，所述内凹的弧面为一内凹的抛物面。
4.如权利要求1所述的一种球阀的阀座结构，其特征在于：所述主阀座与球体的密封面为软质密封面。
5.如权利要求1所述的一种球阀的阀座结构，其特征在于：所述主阀座与球体的密封面为硬质密封面。
6.如权利要求1所述的一种球阀的阀座结构，其特征在于：所述主阀座与球体的密封面为软硬复合密封面。
CN201410330033.2A 2014-07-12 2014-07-12 一种球阀的阀座结构 Active CN104089043B (zh)

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Publication number Priority date Publication date Assignee Title
US3567178A (en) * 1969-09-29 1971-03-02 Acf Ind Inc Valve stem packing and bearing assembly
CN202629148U (zh) * 2012-07-02 2012-12-26 苏州道森阀门有限公司 自调节阀座式上装球阀
CN203348608U (zh) * 2013-07-01 2013-12-18 浙江华夏阀门有限公司 法兰连接上装式球阀
CN204004535U (zh) * 2014-07-12 2014-12-10 江苏神通阀门股份有限公司 一种球阀的阀座结构

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