CN201318447Y - Large-caliber double eccentric butterfly sea valve - Google Patents

Large-caliber double eccentric butterfly sea valve Download PDF

Info

Publication number
CN201318447Y
CN201318447Y CNU2008201789058U CN200820178905U CN201318447Y CN 201318447 Y CN201318447 Y CN 201318447Y CN U2008201789058 U CNU2008201789058 U CN U2008201789058U CN 200820178905 U CN200820178905 U CN 200820178905U CN 201318447 Y CN201318447 Y CN 201318447Y
Authority
CN
China
Prior art keywords
valve
valve seat
seat
disc
sealing
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.)
Expired - Fee Related
Application number
CNU2008201789058U
Other languages
Chinese (zh)
Inventor
张存良
孙秀真
于建军
王守真
高斌
郭智
刘增福
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.)
DALIAN MARINE VALVE CO LTD
Original Assignee
DALIAN MARINE VALVE 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.)
Filing date
Publication date
Application filed by DALIAN MARINE VALVE CO LTD filed Critical DALIAN MARINE VALVE CO LTD
Priority to CNU2008201789058U priority Critical patent/CN201318447Y/en
Application granted granted Critical
Publication of CN201318447Y publication Critical patent/CN201318447Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a large-caliber double eccentric butterfly sea valve which comprises a valve body, a valve disc, a valve seat and a valve rod. The valve seat is fixedly connected on the valve body, a sealing ring with a J-shaped section is arranged at the inner ring of the valve seat, one side arm is located between the valve body and the valve seat, and the top part is located between the valve disc and the valve seat, so as to realize double sealing between the valve seat and the valve body, and between the valve seat and the valve disc. The structure of the butterfly sea valve is simple, and the sealing property is good. Meanwhile, when the opening angle of the valve disc is larger than 2.5 DEG by utilizing the cam effect caused by the double eccentric structure of center lines of a revolving shaft of the valve disc, the valve body and the sealing ring, the valve disc cannot be in contact with the sealing ring of the valve seat any longer, so as to greatly shorten the contact friction stroke between the valve disc and the sealing ring of the valve seat, reduce torque of the butterfly valve, and prolong the service life of the sealing ring of the valve seat.

Description

The two eccentric maritime butterfly valves of heavy caliber
Technical field
The utility model relates to the two eccentric maritime butterfly valves of the pivoted heavy caliber of a kind of valve, particularly closure member.
Background technique
At present, the kingston valve that uses on boats and ships mostly adopts the heavy caliber gate valve, and this valve is big because of its manufacture difficulty, and volume is big, is just progressively replaced by large-diameter butterfly valve.Large-diameter butterfly valve is divided into two kinds of centre type or eccentric types, and the seat ring of centre type butterfly valve can't be changed, and two ends are subjected to the extruding of valve disc all the time up and down; Two eccentric butterfly valves adopt the sealing configuration of adhesive tape formula mostly, and sealing is adopted separated type with rubber and valve seat more.It is short working life that these two kinds of sealing configurations all exist seal ring, maintenance difficult, the deficiency that sealing reliability is low.
Summary of the invention
The purpose of this utility model is to provide a kind of good sealing effect, the two eccentric maritime butterfly valves of the heavy caliber of long service life.
Technical solution of the present utility model is: the two eccentric maritime butterfly valves of a kind of heavy caliber, comprise valve body, valve disc, valve seat and valve rod, it is characterized in that being fixedly connected on the valve seat on the valve body, be equipped with the seal ring that the cross section is a J-shaped in it, the one side arm forms sealing between valve body and valve seat, sealing is formed between valve disc and valve seat on the top.The cross section is that the rubber seal of J-shaped is vulcanized on metal seat valve.Valve seat insert and valve disc adopt interference fit.
The utility model has adopted the seal ring that the cross section is a J-shaped has been set on valve seat, has realized the double-sealing of valve seat and valve body, valve seat and valve disc, and it is simple in structure, and is easy for installation, easy processing.Simultaneously, utilize the cam effect of two eccentric structures generations of valve disc turning axle center line and valve body center line, seal ring center line off-centre, when making the valve disc opening angle greater than 2.5 °, valve disc just no longer contacts with valve seat insert, dwindled the contact friction stroke of valve disc and valve seat insert greatly, can reduce the moment of torsion of butterfly valve, help prolonging the working life of valve seat insert.
Characteristics of the present utility model are: sealability is reliable, and is simple in structure, is easy to make, and long service life is convenient to change.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in the figure, be provided with an end in the valve body 1 and stretch out the outer valve rod 4 of valve body, the position relative with valve outlet is connected with valve disc 2 on the valve rod, it is valve rod center line and valve channel center line off-centre, valve disc turning axle center line and seat ring center line off-centre that its annexation should satisfy valve disc turning axle center line.The interior ring of valve seat is provided with the seal ring 5 that the cross section is the J type, and seal ring adopts rubber material, makes it attached on the metal seat valve 3 by sulfuration process, forms integrative-structure.Valve seat is arranged on the valve outlet place, and is fixing by fastening screw trip bolt 6, and after the installation, a side arm of valve seat insert just in time forms sealing in the plane clearance between valve body and valve seat.The seal ring at valve disc and valve seat top then is to realize sealing by interference fit.

Claims (3)

1, the two eccentric maritime butterfly valves of a kind of heavy caliber, comprise valve body, valve disc, valve seat and valve rod, it is characterized in that being fixedly connected on the valve seat on the valve body, be equipped with the seal ring that the cross section is a J-shaped in it, the one side arm forms sealing between valve body and valve seat, sealing is formed between valve disc and valve seat on the top.
2, the two eccentric maritime butterfly valves of heavy caliber according to claim 1 is characterized in that described cross section is that the rubber seal of J-shaped is vulcanized on metal seat valve.
3, the two eccentric maritime butterfly valves of heavy caliber according to claim 1 is characterized in that valve seat insert and valve disc adopt interference fit.
CNU2008201789058U 2008-11-15 2008-11-15 Large-caliber double eccentric butterfly sea valve Expired - Fee Related CN201318447Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201789058U CN201318447Y (en) 2008-11-15 2008-11-15 Large-caliber double eccentric butterfly sea valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201789058U CN201318447Y (en) 2008-11-15 2008-11-15 Large-caliber double eccentric butterfly sea valve

Publications (1)

Publication Number Publication Date
CN201318447Y true CN201318447Y (en) 2009-09-30

Family

ID=41197212

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008201789058U Expired - Fee Related CN201318447Y (en) 2008-11-15 2008-11-15 Large-caliber double eccentric butterfly sea valve

Country Status (1)

Country Link
CN (1) CN201318447Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102278487A (en) * 2011-06-22 2011-12-14 付永强 Dual-seal butterfly valve with double valve plates
CN110869655A (en) * 2017-07-11 2020-03-06 爱三工业株式会社 Double eccentric valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102278487A (en) * 2011-06-22 2011-12-14 付永强 Dual-seal butterfly valve with double valve plates
CN110869655A (en) * 2017-07-11 2020-03-06 爱三工业株式会社 Double eccentric valve

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090930

Termination date: 20151115

EXPY Termination of patent right or utility model