CN103363146B - 球阀的阀座密封结构 - Google Patents

球阀的阀座密封结构 Download PDF

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CN103363146B
CN103363146B CN201310281882.9A CN201310281882A CN103363146B CN 103363146 B CN103363146 B CN 103363146B CN 201310281882 A CN201310281882 A CN 201310281882A CN 103363146 B CN103363146 B CN 103363146B
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valve
ring
seal ring
valve body
ball
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CN103363146A (zh
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宋保明
付永召
乔玉凤
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TIANJIN BAILI ZHANFA GROUP CO Ltd
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TIANJIN BAILI ZHANFA GROUP CO Ltd
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Abstract

本发明涉及一种球阀的阀座密封结构,包括阀球、阀座、阀体、碟形弹簧,阀体内安装阀座,该阀座内同轴转动安装有一阀球,阀座与阀体之间安装有密封结构,密封结构与阀体之间还顶装有碟形弹簧,所述密封结构由内密封圈、内压环、外密封圈以及外压环构成,该内密封圈、内压环、外密封圈以及外压环由内向外依次径向顺序安装,且内密封圈与内压环的接触面为一内倾斜面,外密封圈与外压环之间的接触面为一反向的外倾斜面。本发明设计科学,结构简单,具有良好的密封功能,使阀门开关扭矩小,动作灵活,工作可靠,广泛用于多种阀座密封结构。<!--1-->

Description

球阀的阀座密封结构
技术领域
本发明属于阀门领域,尤其是一种球阀的阀座密封结构。
背景技术
现在通用的球阀阀座密封结构如附图2所示,该结构的安装简单,但是密封圈较厚,需要使密封圈产生较大的压缩量使密封圈轴向膨胀加大尺寸的变形才能达到密封效果,密封圈压缩量大也会致使阀门操作扭矩较大,而且密封效果差,阀门寿命短。
发明内容
本发明的目的在于克服现有技术的不足之处,提供一种结构简单、安装方便、动作灵活、工作可靠的球阀的阀座密封结构。
本发明解决其技术问题是采取以下技术方案实现的:
一种球阀的阀座密封结构,包括阀球、阀座、阀体、碟形弹簧,阀体内安装阀座,该阀座内同轴转动安装有一阀球,,阀座与阀体之间安装有密封结构,密封结构与阀体之间还顶装有碟形弹簧,其特征在于:所述密封结构由内密封圈、内压环、外密封圈以及外压环构成,该内密封圈、内压环、外密封圈以及外压环由内向外依次径向顺序安装,且内密封圈与内压环的接触面为一内倾斜面,外密封圈与外压环之间的接触面为一反向的外倾斜面。
而且,所述内密封圈与内压环的接触面之间内倾斜面与外密封圈与外压环之间的接触面的外倾斜面的倾斜方向相反且倾斜角度相同。
本发明的优点和积极效果是:
1、本阀座密封结构由依次顺序压装的内密封圈、内压环、外密封圈以及外压环构成,内密封圈在压力作用下沿内压环斜面向下位移从而与阀座压紧密封,外密封圈在压力作用下沿外压环斜面向上位移从而与阀体压紧密封,与现有密封结构相比,变形量小而更够达到更好的密封效果,同时减小顶压力,减小阀门开关扭矩,保证阀门密封的同时增加操作灵活性。
2、本发明设计科学,结构简单,具有良好的密封功能,使阀门开关扭矩小,动作灵活,工作可靠,广泛用于多种阀座密封结构。
附图说明
图1为本发明的结构示意图;
图2为现有技术结构示意图。
具体实施方式
下面结合附图并通过具体实施例对本发明作进一步详述,以下实施例只是描述性的,不是限定性的,不能以此限定本发明的保护范围。
一种球阀的阀座密封结构,包括阀球1、阀座2、阀体8、碟形弹簧7,阀体内安装阀座,该阀座内同轴转动安装有一阀球,为了保证阀座与阀体之间的密封,阀座与阀体之间安装有密封结构,密封结构与阀体之间还顶装有碟形弹簧,保持密封结构的预紧力并且补偿形变。
本发明的创新点在于:
所述密封结构由内密封圈3、内压环4、外密封圈5以及外压环6构成,该内密封圈、内压环、外密封圈以及外压环由内向外依次径向顺序安装,且内密封圈与内压环的接触面为一内倾斜面,如附图1所示,外密封圈与外压环之间的接触面为一反向的外倾斜面。
为了保证上、下两侧的压力相同,所述内密封圈与内压环的接触面之间内倾斜面与外密封圈与外压环之间的接触面的外倾斜面的倾斜方向相反且倾斜角度相同。
本发明的工作原理是:
安装后,球体和阀座接触并压紧达到密封效果,碟形弹簧对外压环施加压力,该压力由外向内依次传递给外压环、外密封圈、内压环以及内密封圈,如附图所示角度,内密封圈在压力作用下沿内压环斜面向下位移从而与阀座压紧密封,外密封圈在压力作用下沿外压环斜面向上位移从而与阀体压紧密封,与现有密封结构相比,变形量小而更够达到更好的密封效果,同时减小顶压力,减小阀门开关扭矩,保证阀门密封的同时增加操作灵活性。
尽管为说明目的公开了本发明的实施例和附图,但是本领域的技术人员可以理解:在不脱离本发明及所附权利要求的精神和范围内,各种替换、变化和修改都是可能的,因此,本发明的范围不局限于实施例和附图所公开的内容。

Claims (1)

1.一种球阀的阀座密封结构,包括阀球、阀座、阀体、碟形弹簧,阀体内安装阀座,该阀座内同轴转动安装有一阀球,阀座与阀体之间安装有密封结构,密封结构与阀体之间还顶装有碟形弹簧,其特征在于:所述密封结构由内密封圈、内压环、外密封圈以及外压环构成,该内密封圈、内压环、外密封圈以及外压环由内向外依次轴向顺序安装,且内密封圈与内压环的接触面为一内倾斜面,外密封圈与外压环之间的接触面为一反向的外倾斜面;
所述内密封圈与内压环的接触面之间内倾斜面与外密封圈与外压环之间的接触面的外倾斜面的倾斜方向相反且倾斜角度相同。
CN201310281882.9A 2013-07-05 2013-07-05 球阀的阀座密封结构 Expired - Fee Related CN103363146B (zh)

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CN107061781A (zh) * 2017-06-19 2017-08-18 中山铁王流体控制设备有限公司 一种低扭矩全金属双石墨硬密封球阀

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920036A (en) * 1973-12-10 1975-11-18 Jacoby Tarbox Corp Ball valve
EP0854308A1 (de) * 1997-01-18 1998-07-22 Argus Gesellschaft mbH Kugelhahn
CN202360793U (zh) * 2011-11-16 2012-08-01 苏州安特威阀门有限公司 一种阀门
CN203374872U (zh) * 2013-07-05 2014-01-01 天津百利展发集团有限公司 一种球阀的阀座密封结构

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020185625A1 (en) * 2001-06-08 2002-12-12 Frank Gosling Leakproof ball valve structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920036A (en) * 1973-12-10 1975-11-18 Jacoby Tarbox Corp Ball valve
EP0854308A1 (de) * 1997-01-18 1998-07-22 Argus Gesellschaft mbH Kugelhahn
CN202360793U (zh) * 2011-11-16 2012-08-01 苏州安特威阀门有限公司 一种阀门
CN203374872U (zh) * 2013-07-05 2014-01-01 天津百利展发集团有限公司 一种球阀的阀座密封结构

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