CN103742670B - 一种双向密封球阀 - Google Patents

一种双向密封球阀 Download PDF

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Publication number
CN103742670B
CN103742670B CN201410045686.6A CN201410045686A CN103742670B CN 103742670 B CN103742670 B CN 103742670B CN 201410045686 A CN201410045686 A CN 201410045686A CN 103742670 B CN103742670 B CN 103742670B
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valve
cam
spheroid
valve seat
rod
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CN103742670A (zh
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张逸芳
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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
    • F16K5/0663—Packings
    • F16K5/0689—Packings between housing and plug
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/52—Mechanical actuating means with crank, eccentric, or cam
    • F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
    • F16K31/52458—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a tap or cock
    • 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

Abstract

一种双向密封球阀，包括阀体、阀杆、球体、阀座、压板、O形圈、键，球体通过阀杆安装于阀体内，球体与阀杆通过键连接，阀座通过压圈与球体接触，阀座与阀体间通过O形圈密封，阀杆上装有凸轮，凸轮通过销轴与阀杆连接，凸轮的弧半径渐增，在45度时最大，而后渐减，以45度对称圆滑过渡，凸轮均布4个阶梯孔，阶梯孔内装有台阶销，台阶销的端面与凸轮的弧面平齐，台阶销与阀杆间还装有弹簧，阀座上还装有顶杆，顶杆的端面与凸轮的弧面接触，压板上周向均匀开有多个孔，孔内装有弹簧，压板与阀座间有一间隙。本发明的有益效果是阀门在开启瞬间阀座与球体快速脱开，可迅速平衡介质压差，启闭过程无摩擦，使用寿命长，双向密封可靠。

Description

一种双向密封球阀
技术领域
本发明涉及一种阀门装置，尤其是一种可以无摩擦启闭的双向密封球阀。
背景技术
现有使用在双向密封球阀，在启闭过程中阀座始终与球体接触，阀门操作扭矩大，密封面易磨损，使用寿命短；国内也有一种在启闭时无摩擦轨道球阀，动作时球体先偏离摆动再转动的原理，可实现无摩擦启闭，但产品结构复杂，在阀杆上铣有螺旋槽，加工工艺复杂，成本高。
发明内容
为了克服现有双向密封球阀，在启闭过程中阀座始终与球体接触，阀门操作扭矩大，密封面易磨损，使用寿命短及轨道球阀、产品结构复杂，制造成本高的不足，本发明提供一种双向密封球阀。
本发明解决其技术问题所采用的技术方案是一种双向密封球阀，包括阀体、阀杆、球体、阀座、压板、O形圈、键，球体通过阀杆安装于阀体内，球体与阀杆通过键连接，阀座通过压圈与球体接触，形成密封副，阀座与阀体间通过O形圈密封，阀杆上还装有凸轮，凸轮通过销轴与阀杆连接，所述凸轮的弧半径渐增，在45度时最大，而后渐减，以45度对称圆滑过渡，凸轮均布4个阶梯孔，阶梯孔内装有台阶销，台阶销的端面与凸轮的弧面平齐，台阶销与阀杆间还装有弹簧，阀座上还装有顶杆，顶杆的端面与凸轮的弧面接触，压板上周向均匀开有多个孔，孔内装有弹簧，压板与阀座间有一间隙。
阀座上还可装有非金属密封圈。
本发明的有益效果是阀门在开启瞬间阀座与球体快速脱开，可迅速平衡介质压差，启闭过程中无摩擦力，使用寿命长，双向密封可靠。
附图说明
下面结合附图和实施例对本发明作进一步说明。
图1是本实施例的构造图；
图2是凸轮的结构示意图。
图中：1.阀体；2.阀杆；3.O形圈；4.销轴；5.凸轮；6.键；7.弹簧；8.阀座；9.球体；10.密封圈；11.压圈；12.阶梯孔；13.台阶销；14.顶杆；15.小弹簧。
具体实施方式
如图1、图2所示，一种双向密封球阀，包括阀体1、阀杆2、球体9、阀座8、压板11、O形圈3、键6，球体9通过阀杆2安装于阀体1内，球体9与阀杆2通过键6连接，阀座8通过压圈11与球体9接触，形成密封副，阀座8与阀体1间通过O形圈3密封，阀杆2上还装有凸轮5，凸轮5通过销轴4与阀杆2连接，凸轮的弧半径渐增，在45度时最大，而后渐减，以45度对称圆滑过渡，凸轮5上均布4个阶梯孔12，阶梯孔12内装有台阶销13，台阶销13的端面与凸轮5的弧面平齐，台阶销13与阀杆2间还装有小弹簧15，阀座8上还装有顶杆14，顶杆14的端面与凸轮5的弧面接触，压圈11上周向均匀开有多个孔，孔内装有弹簧7，压圈11与阀座8间有一间隙，保证阀座8在介质压力的作用下有一定位移，压向球体9，保证密封。
阀座8上还可装有非金属密封圈10，可实现软密封。
工作原理：在关闭位置时，当无介质压力时，阀座8在弹簧7的作用下与球体9接触实现初始密封，工作状态下，介质压力作用下，阀座8压紧球体9，压力越大，密封越严密。当开启时，阀杆2带动凸轮5和球体9旋转，开阀瞬间，凸轮5推动顶杆14，阀座8后移，与球体9脱开，可迅速平衡介质压差，启闭过程中阀座与球体无摩擦，力矩小，使用寿命长。运动到45度位置即半开时，阀座8与球体9脱离距离最大，随后逐渐减少，到全开时又保证阀座8与球体9紧密接触。

Claims (2)

1.一种双向密封球阀，包括阀体、阀杆、球体、阀座、压板、O形圈、键，球体通过阀杆安装于阀体内，球体与阀杆通过键连接，阀座通过压圈与球体接触，形成密封副，阀座与阀体间通过O形圈密封，其特征在于：所述的阀杆上还装有凸轮，凸轮通过销轴与阀杆连接，所述凸轮的弧半径渐增，在45度时最大，而后渐减，以45度对称圆滑过渡，凸轮均布4个阶梯孔，阶梯孔内装有台阶销，台阶销的端面与凸轮的弧面平齐，台阶销与阀杆间还装有弹簧，所述阀座上还装有顶杆，顶杆的端面与凸轮的弧面接触，所述压板上周向均匀开有多个孔，孔内装有弹簧，压板与阀座间有一间隙。
2.根据权利要求1所述的双向密封球阀，其特征在于：在所述的阀座上装有非金属密封圈。
CN201410045686.6A 2014-02-09 2014-02-09 一种双向密封球阀 Active CN103742670B (zh)

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Publication number Priority date Publication date Assignee Title
CN105156708B (zh) * 2015-08-19 2017-09-05 江苏神通阀门股份有限公司 一种微扭矩球阀
CN105570487B (zh) * 2016-03-01 2018-07-20 江苏神通阀门股份有限公司 一种低扭矩球阀
CN105952908B (zh) * 2016-06-22 2018-04-10 无锡惠山泵业有限公司 一种密封效果较好的旋塞
CN111412308A (zh) * 2020-04-30 2020-07-14 邵立坤 一种四通球阀
CN111503309B (zh) * 2020-04-30 2021-11-30 浙江贝格霍尔自控工程有限公司 一种高压金属密封球阀
CN112360992B (zh) * 2020-10-21 2022-09-09 大连康维科技有限公司 一种阀门
CN113944773B (zh) * 2021-10-12 2023-09-15 浙江石化阀门有限公司 旋转杆密封面无摩擦球阀

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US4676480A (en) * 1985-01-11 1987-06-30 Societe Anonyme: Societe Europeenne De Propulsion Ball valve
CN103453209A (zh) * 2012-05-31 2013-12-18 天津职业技术师范大学 基于凸轮控制的球阀结构以及球阀
CN203906855U (zh) * 2014-02-09 2014-10-29 江苏神通阀门股份有限公司 一种双向密封球阀

Patent Citations (4)

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SU853263A1 (ru) * 1978-02-10 1981-08-07 Предприятие П/Я В-2141 Шаровой кран
US4676480A (en) * 1985-01-11 1987-06-30 Societe Anonyme: Societe Europeenne De Propulsion Ball valve
CN103453209A (zh) * 2012-05-31 2013-12-18 天津职业技术师范大学 基于凸轮控制的球阀结构以及球阀
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