CN111927973A - 一种小口径球阀的阀杆防飞出结构 - Google Patents

一种小口径球阀的阀杆防飞出结构 Download PDF

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Publication number
CN111927973A
CN111927973A CN202010877263.6A CN202010877263A CN111927973A CN 111927973 A CN111927973 A CN 111927973A CN 202010877263 A CN202010877263 A CN 202010877263A CN 111927973 A CN111927973 A CN 111927973A
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China
Prior art keywords
flying
valve
valve rod
valve body
out cover
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Pending
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CN202010877263.6A
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English (en)
Inventor
张清双
张静
师晓东
徐雷秋
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Jiangsu Shentong Valve Co Ltd
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Jiangsu Shentong Valve Co Ltd
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Priority to CN202010877263.6A priority Critical patent/CN111927973A/zh
Publication of CN111927973A publication Critical patent/CN111927973A/zh
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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
    • F16K5/0663—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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • 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
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)

Abstract

一种小口径球阀的阀杆防飞出结构，包括右阀体、左阀体、阀杆，右阀体、左阀体的内部止口中设有防飞出套，防飞出套与阀杆间隙配合，阀杆上设有轴用挡圈，轴用挡圈的外径小于右阀体、左阀体内部设有防飞出套止口的内径，防飞出套上端设有填料垫，填料垫中装有填料。本发明的有益效果是，通过防飞出套置于阀腔内部，并用轴用挡圈进行定位支撑来实现阀杆的防飞出结构，结构简单，相比于对开圆环结构，不会出现啃伤阀杆的风险；相比于其他防飞出设置在阀门承压边界外的结构，更具有安全性。

Description

一种小口径球阀的阀杆防飞出结构
技术领域
本发明涉及一种小口径球阀的阀杆防飞出结构。
背景技术
对于小口径球阀（≤DN25）由于其阀体内腔过小，阀杆长度相对于阀体内腔过长，无法设计成下装型的防飞出阀杆。因此现有的小口径球阀结构一般为无防飞出结构的上装型阀杆。但如果阀杆结构没有防飞出结构，阀杆在介质作用力下，很容易从填料函中飞出阀体，造成不安全隐患。所以对于阀杆，必须要设有有防飞出的结构。
现有市面上的一种小口径球阀防飞出结构是通过在阀杆的阶梯上设有止推垫片、对开圆环来实现的。具有这种阀杆防飞出结构的阀门在长期启闭过程中，如果不精确控制对开圆环与阀杆的间隙，容易出现对开圆环啃伤阀杆的现象。其次，由于加了止推垫片及对开圆环，会在一定程度上加大阀门的启闭扭矩。
发明内容
为克服上述现有技术问题，本发明提供了一种小口径球阀的阀杆防飞出结构。
本发明的技术方案是，一种小口径球阀的阀杆防飞出结构，包括右阀体、左阀体、阀杆，右阀体、左阀体的内部止口中设有防飞出套，防飞出套与阀杆间隙配合，阀杆上设有轴用挡圈，轴用挡圈的外径小于右阀体、左阀体内部设有防飞出套止口的内径，防飞出套上端设有填料垫，填料垫中装有填料。
本发明的有益效果是，通过防飞出套置于阀腔内部，并用轴用挡圈进行定位支撑来实现阀杆的防飞出结构，结构简单，相比于对开圆环结构，不会出现啃伤阀杆的风险；相比于其他防飞出设置在阀门承压边界外的结构，更具有安全性。
附图说明
图1为本发明结构示意图。
图中：1.左阀体；2.防飞出套；3.填料垫；4.填料；5.阀杆；6.轴用挡圈；7.右阀体。
具体实施方式
如图所示，一种小口径球阀的阀杆防飞出结构，包括右阀体7、左阀体1、阀杆5，右阀体7、左阀体1的内部止口中设有防飞出套2，防飞出套3与阀杆5间隙配合，在阀门启闭过程中，相比于对开圆环的结构，不会存在啃伤的风险。阀杆5上设有轴用挡圈6，实现防飞出套2的定位，防止防飞出套2掉落；轴用挡圈6的外径小于右阀体7、左阀体1内部设有防飞出套2止口的内径，防止阀杆5启闭过程中轴用挡圈6与右阀体7、左阀体1接触产生掉落情况；防飞出套2上端设有填料垫3，填料垫3中装有填料4，实现阀杆的密封。
本具体实施例仅仅是对本发明的解释，其并不是对本发明的限制，本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改，但只要在本发明的权利要求范围内都受到专利法的保护。

Claims (1)

1.一种小口径球阀的阀杆防飞出结构，包括右阀体、左阀体、阀杆，其特征在于，所述右阀体、左阀体的内部止口中设有防飞出套，所述防飞出套与阀杆间隙配合，所述阀杆上设有轴用挡圈，所述轴用挡圈的外径小于右阀体、左阀体内部设有防飞出套止口的内径，所述防飞出套上端设有填料垫，填料垫中装有填料。
CN202010877263.6A 2020-08-27 2020-08-27 一种小口径球阀的阀杆防飞出结构 Pending CN111927973A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112594410A (zh) * 2020-12-16 2021-04-02 武昌船舶重工集团有限公司 一种上装阀杆式球阀

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0362275U (zh) * 1989-10-20 1991-06-18
CN201606527U (zh) * 2009-12-29 2010-10-13 北京市阀门总厂(集团)有限公司 具有阀杆防飞出机构的小口径球阀
CN205824247U (zh) * 2016-07-12 2016-12-21 浙江新旭阀业有限公司 一种小口径球阀阀杆防飞出结构
CN209294455U (zh) * 2018-12-20 2019-08-23 无锡凯尔克仪表阀门有限公司 一种高频球阀
CN211175473U (zh) * 2019-12-10 2020-08-04 陈培培 一种可压紧密封的高平台球阀
CN212273121U (zh) * 2020-08-27 2021-01-01 江苏神通阀门股份有限公司 一种小口径球阀的阀杆防飞出结构

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0362275U (zh) * 1989-10-20 1991-06-18
CN201606527U (zh) * 2009-12-29 2010-10-13 北京市阀门总厂(集团)有限公司 具有阀杆防飞出机构的小口径球阀
CN205824247U (zh) * 2016-07-12 2016-12-21 浙江新旭阀业有限公司 一种小口径球阀阀杆防飞出结构
CN209294455U (zh) * 2018-12-20 2019-08-23 无锡凯尔克仪表阀门有限公司 一种高频球阀
CN211175473U (zh) * 2019-12-10 2020-08-04 陈培培 一种可压紧密封的高平台球阀
CN212273121U (zh) * 2020-08-27 2021-01-01 江苏神通阀门股份有限公司 一种小口径球阀的阀杆防飞出结构

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112594410A (zh) * 2020-12-16 2021-04-02 武昌船舶重工集团有限公司 一种上装阀杆式球阀

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