CN202252158U - 一种止回阀的阀口的密封结构 - Google Patents

一种止回阀的阀口的密封结构 Download PDF

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Publication number
CN202252158U
CN202252158U CN2011202876801U CN201120287680U CN202252158U CN 202252158 U CN202252158 U CN 202252158U CN 2011202876801 U CN2011202876801 U CN 2011202876801U CN 201120287680 U CN201120287680 U CN 201120287680U CN 202252158 U CN202252158 U CN 202252158U
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valve
gap
sealing
sealing structure
seal ring
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CN2011202876801U
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吴寿涛
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TONGLING XINTE VALVE CO Ltd
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TONGLING XINTE VALVE CO Ltd
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Abstract

本实用新型公开了一种止回阀的阀口的密封结构,阀体的出口端的端部开有楔形的环形卡槽,环形卡槽内嵌装有软性的密封圈,密封圈外压合有阀盖,阀盖的内壁与密封圈的外壁之间具有间隙。本实用新型结构设计合理,无论进口端的介质压力变化如何,阀板可以自如关闭或开启,且密封性能良好。

Description

一种止回阀的阀口的密封结构
技术领域
本实用新型涉及止回阀领域,具体属于一种止回阀的阀口的密封结构。
背景技术
止回阀是指依靠介质本身流动而自动开、闭阀瓣,用来防止介质倒流的阀门,又称逆止阀、单向阀、逆流阀、和背压阀。止回阀属于一种自动阀门,其主要作用是防止介质倒流、防止泵及驱动电动机反转,以及容器介质的泄放。但是目前的静音式止回阀结构过于复杂,产品笨重,制作成本高。
实用新型内容
本实用新型的目的是提供一种止回阀的阀口的密封结构,结构设计合理,无论进口端的介质压力变化如何,阀板可以自如关闭或开启,且密封性能良好。
本实用新型的技术方案如下:
一种止回阀的阀口的密封结构,阀体的出口端的端部开有楔形的环形卡槽,环形卡槽内嵌装有软性的密封圈,密封圈外压合有阀盖,阀盖的内壁与密封圈的外壁之间具有间隙。
    所述的阀盖内壁具有向内凹陷面。
本实用新型当介质按规定方向流动时,阀瓣受介质力的作用,被开启;介质逆流时,因阀瓣自重和阀瓣受介质反向力的作用,使阀瓣与阀座的密封面密合而关闭,达到阻止介质逆流的目的。结构设计合理,无论进口端的介质压力变化如何,阀板可以自如关闭或开启,且密封性能良好。
附图说明
图1为本实用新型的结构示意图。
具体实施方式
参见附图,一种止回阀的阀口的密封结构,阀体的出口端1的端部开有楔形的环形卡槽2,环形卡槽2内嵌装有软性的密封圈3,密封圈外压合有阀盖4,阀盖4的内壁与密封圈的外壁之间具有间隙6,阀盖内壁具有向内凹陷面5。

Claims (2)

1.一种止回阀的阀口的密封结构,其特征在于:阀体的出口端的端部开有楔形的环形卡槽,环形卡槽内嵌装有软性的密封圈,密封圈外压合有阀盖,阀盖的内壁与密封圈的外壁之间具有间隙。
2.根据权利要求1所述的一种止回阀的阀口的密封结构,其特征在于:所述的阀盖内壁具有向内凹陷面。
CN2011202876801U 2011-08-09 2011-08-09 一种止回阀的阀口的密封结构 Expired - Fee Related CN202252158U (zh)

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CN2011202876801U CN202252158U (zh) 2011-08-09 2011-08-09 一种止回阀的阀口的密封结构

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CN2011202876801U CN202252158U (zh) 2011-08-09 2011-08-09 一种止回阀的阀口的密封结构

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CN202252158U true CN202252158U (zh) 2012-05-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102797879A (zh) * 2012-09-06 2012-11-28 安徽迈宁工业泵有限公司 一种单瓣旋启式止回阀

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102797879A (zh) * 2012-09-06 2012-11-28 安徽迈宁工业泵有限公司 一种单瓣旋启式止回阀

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Granted publication date: 20120530

Termination date: 20120809