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WO2008120349A1 - Check valve - Google Patents

Check valve Download PDF

Info

Publication number
WO2008120349A1
WO2008120349A1 PCT/JP2007/056852 JP2007056852W WO2008120349A1 WO 2008120349 A1 WO2008120349 A1 WO 2008120349A1 JP 2007056852 W JP2007056852 W JP 2007056852W WO 2008120349 A1 WO2008120349 A1 WO 2008120349A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
valve seat
check valve
protrusion
prevented
Prior art date
Application number
PCT/JP2007/056852
Other languages
French (fr)
Japanese (ja)
Inventor
Kouichi Hisada
Takao Azuma
Original Assignee
Tomoe Technical Research Company 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.)
Filing date
Publication date
Application filed by Tomoe Technical Research Company Ltd. filed Critical Tomoe Technical Research Company Ltd.
Priority to PCT/JP2007/056852 priority Critical patent/WO2008120349A1/en
Priority to JP2008525734A priority patent/JPWO2008120349A1/en
Publication of WO2008120349A1 publication Critical patent/WO2008120349A1/en

Links

Classifications

    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F16K15/035—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member with a plurality of valve members
    • F16K15/036—Dual valve members with hinges crossing the flow line substantially diametrical
    • F16K15/038—Dual valve members with hinges crossing the flow line substantially diametrical having a common hinge

Landscapes

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

Abstract

[PROBLEMS] To provide a check valve in which valve seat sealing performance is secured stably from low pressure to high pressure, unstable state of valve seat sealing performance is prevented and chattering phenomenon and noise or damage caused by chattering phenomenon can be prevented to a high degree. [MEANS FOR SOLVING PROBLEMS] In a check valve where a valve element consisting of two semicircular valve plates hinged by a hinge pin is arranged in a valve body having a tubular channel and urged constantly in the valve closing direction by a spring, a valve seat for sealing the valve element when it closes fully is formed of a resilient body, a protrusion is formed on the valve element sealing surface side of the valve seat, and a recessed pressure introducing portion for receiving the fluid pressure is formed in the outer circumferential surface of the protrusion.
PCT/JP2007/056852 2007-03-29 2007-03-29 Check valve WO2008120349A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2007/056852 WO2008120349A1 (en) 2007-03-29 2007-03-29 Check valve
JP2008525734A JPWO2008120349A1 (en) 2007-03-29 2007-03-29 Check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/056852 WO2008120349A1 (en) 2007-03-29 2007-03-29 Check valve

Publications (1)

Publication Number Publication Date
WO2008120349A1 true WO2008120349A1 (en) 2008-10-09

Family

ID=39807942

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/056852 WO2008120349A1 (en) 2007-03-29 2007-03-29 Check valve

Country Status (2)

Country Link
JP (1) JPWO2008120349A1 (en)
WO (1) WO2008120349A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013077164A1 (en) * 2011-11-25 2013-05-30 日本バルカー工業株式会社 Gate valve
CN109163126A (en) * 2018-11-01 2019-01-08 恒华阀门有限公司 High-performance high temperature and pressure safety valve
KR20200000178U (en) * 2018-07-13 2020-01-22 회르비거 비엔 게엠베하 Relief valve
IT202100017444A1 (en) * 2021-07-02 2023-01-02 Buti Res S R L DOUBLE PLATE NON-RETURN VALVE
DE102015016299B4 (en) 2014-12-25 2023-08-03 Aisan Kogyo Kabushiki Kaisha Flow control valve and fuel vapor processing device incorporating the flow control valve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1187882A (en) * 1968-04-30 1970-04-15 William John Woolley Check Valves.
JPS5193425U (en) * 1975-01-24 1976-07-27
JPS6313974A (en) * 1986-07-02 1988-01-21 Nippon Air Brake Co Ltd Seal structure of valve open/close part
JPH09296874A (en) * 1996-05-01 1997-11-18 Mitsubishi Heavy Ind Ltd Check valve
JP2006220229A (en) * 2005-02-10 2006-08-24 Nippon Valqua Ind Ltd Dovetail groove sealing material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1187882A (en) * 1968-04-30 1970-04-15 William John Woolley Check Valves.
JPS5193425U (en) * 1975-01-24 1976-07-27
JPS6313974A (en) * 1986-07-02 1988-01-21 Nippon Air Brake Co Ltd Seal structure of valve open/close part
JPH09296874A (en) * 1996-05-01 1997-11-18 Mitsubishi Heavy Ind Ltd Check valve
JP2006220229A (en) * 2005-02-10 2006-08-24 Nippon Valqua Ind Ltd Dovetail groove sealing material

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013077164A1 (en) * 2011-11-25 2013-05-30 日本バルカー工業株式会社 Gate valve
JP2013113327A (en) * 2011-11-25 2013-06-10 Nippon Valqua Ind Ltd Gate valve
US9611940B2 (en) 2011-11-25 2017-04-04 Nippon Valqua Industries, Ltd. Gate valve
DE102015016299B4 (en) 2014-12-25 2023-08-03 Aisan Kogyo Kabushiki Kaisha Flow control valve and fuel vapor processing device incorporating the flow control valve
KR20200000178U (en) * 2018-07-13 2020-01-22 회르비거 비엔 게엠베하 Relief valve
KR200494011Y1 (en) * 2018-07-13 2021-07-15 회르비거 비엔 게엠베하 Relief valve
CN109163126A (en) * 2018-11-01 2019-01-08 恒华阀门有限公司 High-performance high temperature and pressure safety valve
IT202100017444A1 (en) * 2021-07-02 2023-01-02 Buti Res S R L DOUBLE PLATE NON-RETURN VALVE

Also Published As

Publication number Publication date
JPWO2008120349A1 (en) 2010-07-15

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