CN104235439A - 一种防倒流阀 - Google Patents

一种防倒流阀 Download PDF

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Publication number
CN104235439A
CN104235439A CN201310230924.6A CN201310230924A CN104235439A CN 104235439 A CN104235439 A CN 104235439A CN 201310230924 A CN201310230924 A CN 201310230924A CN 104235439 A CN104235439 A CN 104235439A
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CN
China
Prior art keywords
liquid
valve
backflow
flap
backflow preventer
Prior art date
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Pending
Application number
CN201310230924.6A
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English (en)
Inventor
池学聪
谭红全
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Panda Machinery Group Co Ltd
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Shanghai Panda Machinery Group Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Shanghai Panda Machinery Group Co Ltd filed Critical Shanghai Panda Machinery Group Co Ltd
Priority to CN201310230924.6A priority Critical patent/CN104235439A/zh
Publication of CN104235439A publication Critical patent/CN104235439A/zh
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00Check valves
    • F16K15/02Check valves with guided rigid valve members
    • F16K15/03Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member

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

Abstract

一种防倒流阀,使用时将防倒流阀安装在需要防止液体倒流的管道中,工作时由液体的推力使阀瓣开启,液体流过防倒流阀,当液体不需要流动时停止液体推力,这时阀瓣的推力消失,由阀瓣自身的重力带动合页向下旋转后和密封圈贴合,达到阻止流过防倒流阀的液体倒流的目的,由于阀瓣可旋转至液体流动平行方向,减少了对液体的径向阻力。

Description

一种防倒流阀
技术领域
本发明涉及一种防倒流阀,特别是一种管道流体倒流防止阀。
背景技术
已有技术中为了防止管道中的液体出现回流现象,一般都在管道中安装止回阀来实现,止回阀通过阀瓣和弹簧的作用使液体只能朝一个方向流动,由于阀瓣和弹簧挡在管路中间,使液体流动时增大阻力,导致推动液体流动的动力增加而消耗能源。
发明内容
本发明的目的在于:设计一种阀瓣可旋转的防倒流阀,减少液体流动时的阻力达到节能的目的。
本发明采用如下结构实现上述目的,防倒流阀由:阀体、阀瓣、密封圈、活页组成,在阀体上设有阀板及进出口连接法兰,阀板上开有过流孔及密封槽,密封圈嵌在密封槽中,阀瓣通过合页和阀板连接。 
采用如上结构,使用时将防倒流阀安装在需要防止液体倒流的管道中,工作时由液体的推力使阀瓣开启,液体流过防倒流阀,当液体不需要流动时停止液体推力,这时阀瓣的推力消失,由阀瓣自身的重力带动合页向下旋转后和密封圈贴合,达到阻止流过防倒流阀的液体倒流的目的,由于阀瓣可旋转至液体流动平行方向,减少了对液体的径向阻力。
附图说明
图1 为本发明的剖面图。
具体实施方式
如图1所示的一种防倒流阀包括:阀体1、阀瓣2、密封圈3、合页4组成,阀体1包含阀板7及进出口法兰8,在阀板1上开有过流孔5,在阀板1上还开有密封槽6,密封圈3嵌在密封槽6中,阀瓣2通过合页4和阀板1连接,图中箭头方向为液体流动方向,使用时按液体流动方向将防倒流阀安装在系统管路中,当液体流过管道时由液体的推力推动阀瓣2,阀瓣2带动合页4向上旋转而使防倒流阀打开,从而使液体流过防倒流阀,当液体不需要流动时其推力消失,这时阀瓣2由于重力原因带动合页4向下旋转,最终使阀瓣2和密封圈3紧密贴合,达到阻止流过防倒流阀的液体倒流的目的,由于阀瓣2开启时向上旋转而减少了对液体流动时的径向阻力,减小液体流动时的水力损失。

Claims (2)

1.一种防倒流阀,其特征在于防倒流阀由:阀体、阀瓣、密封圈、活页组成,在阀体上设有阀板及进出口连接法兰,阀板上开有过流孔及密封槽,密封圈嵌在密封槽中,阀瓣通过合页和阀板连接。
2.根据权利要求1所述的一种单向装置,其特征在于:阀瓣可向上旋转而减少径向阻力。
CN201310230924.6A 2013-06-13 2013-06-13 一种防倒流阀 Pending CN104235439A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310230924.6A CN104235439A (zh) 2013-06-13 2013-06-13 一种防倒流阀

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310230924.6A CN104235439A (zh) 2013-06-13 2013-06-13 一种防倒流阀

Publications (1)

Publication Number Publication Date
CN104235439A true CN104235439A (zh) 2014-12-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310230924.6A Pending CN104235439A (zh) 2013-06-13 2013-06-13 一种防倒流阀

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CN (1) CN104235439A (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115210469A (zh) * 2020-02-26 2022-10-18 株式会社村田制作所 流体控制装置
US20220412555A1 (en) * 2021-06-23 2022-12-29 Noritz Corporation Exhaust adapter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19958572C1 (de) * 1999-12-04 2001-01-11 Leica Camera Ag Schaltbare Ventilklappe
CN200986043Y (zh) * 2006-12-07 2007-12-05 陆平 风道逆止阀
CN201297406Y (zh) * 2008-11-18 2009-08-26 江苏光阳动力环保设备有限公司 便捷式止回阀
CN202040385U (zh) * 2011-05-23 2011-11-16 无锡科磊阀业有限公司 薄型弹簧辅助关闭止回阀
CN202220887U (zh) * 2011-08-24 2012-05-16 宜兴市迪凡特机械制造有限公司 压板式止回阀
CN202927155U (zh) * 2012-11-14 2013-05-08 安徽铜都阀门股份有限公司 一种超薄型止回阀

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19958572C1 (de) * 1999-12-04 2001-01-11 Leica Camera Ag Schaltbare Ventilklappe
CN200986043Y (zh) * 2006-12-07 2007-12-05 陆平 风道逆止阀
CN201297406Y (zh) * 2008-11-18 2009-08-26 江苏光阳动力环保设备有限公司 便捷式止回阀
CN202040385U (zh) * 2011-05-23 2011-11-16 无锡科磊阀业有限公司 薄型弹簧辅助关闭止回阀
CN202220887U (zh) * 2011-08-24 2012-05-16 宜兴市迪凡特机械制造有限公司 压板式止回阀
CN202927155U (zh) * 2012-11-14 2013-05-08 安徽铜都阀门股份有限公司 一种超薄型止回阀

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115210469A (zh) * 2020-02-26 2022-10-18 株式会社村田制作所 流体控制装置
US20220412555A1 (en) * 2021-06-23 2022-12-29 Noritz Corporation Exhaust adapter

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Application publication date: 20141224