JPS5683666A - Emergency shutt-off device for butterfly valve - Google Patents

Emergency shutt-off device for butterfly valve

Info

Publication number
JPS5683666A
JPS5683666A JP16017379A JP16017379A JPS5683666A JP S5683666 A JPS5683666 A JP S5683666A JP 16017379 A JP16017379 A JP 16017379A JP 16017379 A JP16017379 A JP 16017379A JP S5683666 A JPS5683666 A JP S5683666A
Authority
JP
Japan
Prior art keywords
weight
arm
valve
link
dead
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP16017379A
Other languages
Japanese (ja)
Inventor
Mikio Niga
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.)
WAKASHIMA KOGYO KK
Original Assignee
WAKASHIMA KOGYO KK
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 WAKASHIMA KOGYO KK filed Critical WAKASHIMA KOGYO KK
Priority to JP16017379A priority Critical patent/JPS5683666A/en
Publication of JPS5683666A publication Critical patent/JPS5683666A/en
Pending legal-status Critical Current

Links

Landscapes

  • Safety Valves (AREA)
  • Lift Valve (AREA)

Abstract

PURPOSE: To enable to reduce a weight of a dead weight remarkably by a method wherein a link mechanism is interposed between an arm and the dead weigh and the valve is closed with a required rotating torque by pivoting the arm indirectly.
CONSTITUTION: When an emergency situation occured and a solenoid valve 37 is operated by receiving a shutt-off signal, a releasing link 36 is attracted, contact between a releasing lever 33 and a lifting lever 28 are disconnected, a pin 35 is dropped, the lock of the dead weight 16 is released and the dead weight 16 is lowered by gravity along a frame 22. A link 14 is interposed between the arm 12 and the weight 16 and the arm 12 connected to the link 14 is pivoted in accompanied with the lowering of the weight 16, therefore, the valve shaft 3 is pivoted to a direction to close the valve body 4. A rotating torque substantially approximate to the required rotating torque may be obtained until the opening degree of the valve is reduced to 0°, accordingly, the weight of the dead weight 16 may be reduced remarkably.
COPYRIGHT: (C)1981,JPO&Japio
JP16017379A 1979-12-10 1979-12-10 Emergency shutt-off device for butterfly valve Pending JPS5683666A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16017379A JPS5683666A (en) 1979-12-10 1979-12-10 Emergency shutt-off device for butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16017379A JPS5683666A (en) 1979-12-10 1979-12-10 Emergency shutt-off device for butterfly valve

Publications (1)

Publication Number Publication Date
JPS5683666A true JPS5683666A (en) 1981-07-08

Family

ID=15709421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16017379A Pending JPS5683666A (en) 1979-12-10 1979-12-10 Emergency shutt-off device for butterfly valve

Country Status (1)

Country Link
JP (1) JPS5683666A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103939658A (en) * 2014-04-29 2014-07-23 天津福得士阀门有限公司 Valve with electromagnetic rapid closing control function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103939658A (en) * 2014-04-29 2014-07-23 天津福得士阀门有限公司 Valve with electromagnetic rapid closing control function

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