CN108561579A - 一种金属密封固定球阀密封副无相对运动的阀座脱离结构 - Google Patents

一种金属密封固定球阀密封副无相对运动的阀座脱离结构 Download PDF

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Publication number
CN108561579A
CN108561579A CN201810225804.XA CN201810225804A CN108561579A CN 108561579 A CN108561579 A CN 108561579A CN 201810225804 A CN201810225804 A CN 201810225804A CN 108561579 A CN108561579 A CN 108561579A
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CN
China
Prior art keywords
sphere
valve seat
valve
valve body
drive plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810225804.XA
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English (en)
Inventor
张清双
茅岭峰
沈捷美
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Jiangsu Shentong Valve Co Ltd
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Jiangsu Shentong Valve Co Ltd
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Priority to CN201810225804.XA priority Critical patent/CN108561579A/zh
Publication of CN108561579A publication Critical patent/CN108561579A/zh
Pending legal-status Critical Current

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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
    • F16K5/0605—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 with particular plug arrangements, e.g. particular shape or built-in means
    • 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
    • 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)

Abstract

本发明公开了一种金属密封固定球阀密封副无相对运动的阀座脱离结构，包括阀体、球体、阀座和传动盘，阀体中腔具有安装口，球体下端通过圆轴与阀体进行固定连接，阀体的进出口分别设有浮动式阀座，阀座通过弹簧提供预紧力与球体间形成密封，球体上下端面加工有正方形轴，两个传动盘上加工有正方形槽，轴孔之间形成配合，并通过螺钉固定于球体上，传动盘结构为圆盘状，并在两端进行切割，圆盘边线全部倒圆，且在直线部分与圆弧边线相交处倒大圆弧，两个传动盘分别安装于球体上下两个端面上，将球体安装于阀体内时，传动盘的侧平面在球体关闭位置上能正对阀座。本发明的传动盘与阀座间接触面积小，摩擦力小，保护密封副无损伤提高使用寿命。

Description

一种金属密封固定球阀密封副无相对运动的阀座脱离结构
技术领域
本发明涉及一种阀座脱离结构。
背景技术
目前现有大部分固定式金属密封球阀，阀门在启闭过程中，球体与阀座密封面始终相互接触，密封副的启闭摩擦力大，对密封副磨损大，密封性能差。
发明内容
本发明主要解决的技术问题是现有的金属密封球阀的密封副的启闭摩擦力大，对密封副磨损大，密封性能差。
为解决上述问题，本发明提供了一种金属密封固定球阀密封副无相对运动的阀座脱离结构，包括阀体、球体、阀座和传动盘，阀体中腔具有安装口，球体下端通过圆轴与阀体进行固定连接，阀体的进出口分别设有浮动式阀座，阀座通过弹簧提供预紧力与球体间形成密封，球体上下端面加工有正方形轴，两个传动盘上加工有正方形槽，轴孔之间形成配合，并固定于球体上，传动盘结构为圆盘状，并在两端进行切割，圆盘边线全部倒圆，且在直线部分与圆弧边线相交处倒大圆弧，两个传动盘分别安装于球体上下两个端面上，将球体安装于阀体内时，传动盘的侧平面在球体关闭位置上能正对阀座。当阀门开启时，球体带动传动盘一起转动，传动盘由侧平面转向圆弧面，传动盘通过圆弧面顶出阀座，这样阀门在开启过程中，阀座与球体间将形成无摩擦运动。
两个传动盘通过螺钉固定于球体上。
本发明的金属密封固定球阀密封副无相对运动的阀座脱离结构的阀门在启闭过程中，由于传动盘已顶出阀座，因此球体和阀座将形成无摩擦运动，密封面之间磨损少，密封性能可靠，特别适用于高温高压蒸汽工况。传动盘与阀座间接触面积小，摩擦力小，因此可以降低阀门在启闭过程中的操作扭矩，并保护密封副无损伤提高使用寿命。
附图说明
图1是金属密封固定球阀密封副无相对运动的阀座脱离结构的结构示意图。
图2为传动盘结构示意图。
图1中1为球体、2为传动盘、3为阀座、4为阀体。
具体实施方式
图1示出了本发明的实施方式，一种金属密封固定球阀密封副无相对运动的阀座脱离结构，包括阀体、球体、阀座和传动盘，阀体中腔具有安装口，球体下端通过圆轴与阀体进行固定连接，阀体的进出口分别设有浮动式阀座，阀座通过弹簧提供预紧力与球体间形成密封，球体上下端面加工有正方形轴，两个传动盘上加工有正方形槽，轴孔之间形成配合，并通过螺钉固定于球体上，传动盘结构为圆盘状，并在两端进行切割，圆盘边线全部倒圆，且在直线部分与圆弧边线相交处倒大圆弧，两个传动盘分别安装于球体上下两个端面上，将球体安装于阀体内时，传动盘的侧平面在球体关闭位置上能正对阀座。当阀门开启时，球体带动传动盘一起转动，传动盘由侧平面转向圆弧面，传动盘通过圆弧面顶出阀座，这样阀门在开启过程中，阀座与球体间将形成无摩擦运动。

Claims (2)

1.一种金属密封固定球阀密封副无相对运动的阀座脱离结构，包括阀体、球体、阀座，其特征在于：阀体中腔具有安装口，球体下端通过圆轴与阀体进行固定连接，阀体的进出口分别设有浮动式阀座，阀座通过弹簧提供预紧力与球体间形成密封，球体上下端面加工有正方形轴，两个传动盘上加工有正方形槽，轴孔之间形成配合，并固定于球体上，传动盘结构为圆盘状，并在两端进行切割，圆盘边线全部倒圆，且在直线部分与圆弧边线相交处倒大圆弧，两个传动盘分别安装于球体上下两个端面上，将球体安装于阀体内时，传动盘的侧平面在球体关闭位置上能正对阀座；当阀门开启时，球体带动传动盘一起转动，传动盘由侧平面转向圆弧面，传动盘通过圆弧面顶出阀座，这样阀门在开启过程中，阀座与球体间形成无摩擦运动。
2.根据权利要求1所述的金属密封固定球阀密封副无相对运动的阀座脱离结构，其特征在于：两个传动盘通过螺钉固定于球体上。
CN201810225804.XA 2018-03-19 2018-03-19 一种金属密封固定球阀密封副无相对运动的阀座脱离结构 Pending CN108561579A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111412308A (zh) * 2020-04-30 2020-07-14 邵立坤 一种四通球阀

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203836269U (zh) * 2014-05-04 2014-09-17 环球阀门集团有限公司 超低温无摩擦上装式固定球阀
CN106523730A (zh) * 2015-09-12 2017-03-22 江苏江恒阀业有限公司 低磨损球阀
CN206361180U (zh) * 2016-12-09 2017-07-28 天津百利展发集团有限公司 一种新型球阀
CN107084259A (zh) * 2017-05-19 2017-08-22 江苏神通阀门股份有限公司 一种微扭矩球阀

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203836269U (zh) * 2014-05-04 2014-09-17 环球阀门集团有限公司 超低温无摩擦上装式固定球阀
CN106523730A (zh) * 2015-09-12 2017-03-22 江苏江恒阀业有限公司 低磨损球阀
CN206361180U (zh) * 2016-12-09 2017-07-28 天津百利展发集团有限公司 一种新型球阀
CN107084259A (zh) * 2017-05-19 2017-08-22 江苏神通阀门股份有限公司 一种微扭矩球阀

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111412308A (zh) * 2020-04-30 2020-07-14 邵立坤 一种四通球阀

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