CN205064864U - Eccentric metal of two -way four -dimension butterfly valve sealed firmly - Google Patents

Eccentric metal of two -way four -dimension butterfly valve sealed firmly Download PDF

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Publication number
CN205064864U
CN205064864U CN201520823726.5U CN201520823726U CN205064864U CN 205064864 U CN205064864 U CN 205064864U CN 201520823726 U CN201520823726 U CN 201520823726U CN 205064864 U CN205064864 U CN 205064864U
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China
Prior art keywords
valve
seat insert
valve seat
valve body
eccentric
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Active
Application number
CN201520823726.5U
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Chinese (zh)
Inventor
姚海祥
梁志宝
赵爱花
王永明
贾宁
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YANGQUAN VALVE CO Ltd
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YANGQUAN VALVE CO Ltd
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Priority to CN201520823726.5U priority Critical patent/CN205064864U/en
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Abstract

The utility mode relates to an eccentric metal of two -way four -dimension butterfly valve sealed firmly has solved current eccentric butterfly valve because the sealed problem of revealing the phenomenon of the poor easy appearance of the reverse pressure -bearing effect of the unreasonable existence of structural design. A valve body, valve seat insert, the compound seal circle, the butterfly plate, valve rod and clamp plate all incline to set up, valve seat insert's the conical surface structure of internal surface for being the alpha angle, and the surface of compound seal circle closely cooperates with valve seat insert's internal surface, the offset is radially left with the valve body passageway in the valve rod center, the valve rod central line leaves the offset with valve seat insert at valve body center line direction, there is the eccentric angle between valve seat insert central line and the valve body central line, valve seat insert central line and valve body are through radially existing the eccentric angle. The utility model discloses guaranteed no matter the valve is forward pressure testing or reverse pressure testing, the butterfly plate all has pass function tight more, guarantees the required sealed specific pressure of valve, makes sealing performance good.

Description

Two-way four-dimensional eccentric metal hard sealed butterfly damper
Technical field
The utility model relates to butterfly valve, is specially a kind of two-way four-dimensional eccentric metal hard sealed butterfly damper.
Background technique
Butterfly valve is because its structure is simple, keying is widely used in various operating mode flexibly, as a kind of equipment cutting off and regulate rate-of flow, especially the industry pipe network improving such as water conservancy, electric power, oil, requires that valve must reach bidirectional bearing to ensure the normal operation of pipeline equipment.
No matter existing butterfly valve is double eccentric butterfly valve or three eccentric butterfly valve, unidirectional pressure-bearing is respond well, reverse pressure-bearing poor effect, although three eccentric butterfly valve is structurally better than the butterfly valve of other structural type, can realize in theory closing laminating instantaneously, depart from instantaneously, but due to the impact of manufacturing process and machining accuracy, the sealing of valve was leaned on position to close completely and was realized, it is good that the side that valve angle is large when forward is suppressed has the function sealing effect closing tighter and tighter, when reverse pressure testing, the side that angle is little has the function of closing more loose and more loose, the side that angle is little just there will be seal leakage.
Summary of the invention
There is to solve existing eccentric-butterfly-valve the problem that seal leakage phenomenon easily appears in reverse pressure-bearing weak effect in the utility model, provides a kind of two-way four-dimensional eccentric metal hard sealed butterfly damper because structural design is unreasonable.
The utility model adopts following technological scheme to realize: two-way four-dimensional eccentric metal hard sealed butterfly damper, comprise valve body, valve seat insert, composite sealing ring, butterfly plate, valve rod and pressing plate, valve body, valve seat insert, composite sealing ring, butterfly plate, valve rod and pressing plate are all obliquely installed, the internal surface of valve seat insert is the cone structure in α angle, and the internal surface of the outer surface of composite sealing ring and valve seat insert closely cooperates, valve rod center and valve channel radial direction leave offset, valve rod center line and valve seat insert leave offset at valve body centerline direction, eccentric angle is there is between valve seat insert center line and valve body center line, eccentric angle is there is in valve seat insert center line and valve body by radial direction.
Valve is when closing, and when pressure medium is added fashionable by forward, butterfly plate and composite sealing ring compress to the direction that valve seat insert angle is little and make valve close tighter and tighter, prevent sealing face leakage; When pressure medium is fashionable by oppositely adding, butterfly plate and composite sealing ring compress to the direction that valve seat insert angle is little and make valve close tighter and tighter, prevent sealing face leakage, reach bidirectional bearing sealing No leakage, overcome existing eccentric-butterfly-valve and there is the problem that seal leakage phenomenon easily appears in reverse pressure-bearing weak effect because structural design is unreasonable.
The α angle of valve seat insert is 15-30 degree, and valve seat insert center line and valve channel radial direction exist eccentric angle and be less than 10 degree, further increase the sealing effect of valve.
The utility model reasonable in design is reliable, the basis of three dimension eccentric structure turn increases the bias of a valve seat and valve body latus rectum angle, ensure that no matter valve is forward pressure testing or oppositely pressure testing, butterfly plate all has the function of closing tighter and tighter, ensure the seal pressure needed for valve, make favorable sealing property.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-valve body, 2-valve seat insert, 3-composite sealing ring, 4-butterfly plate, 5-valve rod, 6-pressing plate.
Embodiment
Two-way four-dimensional eccentric metal hard sealed butterfly damper, comprise valve body 1, valve seat insert 2, composite sealing ring 3, butterfly plate 4, valve rod 5 and pressing plate 6, valve body 1, valve seat insert 2, composite sealing ring 3, butterfly plate 4, valve rod 5 and pressing plate 6 are all obliquely installed, the internal surface of valve seat insert 2 is the cone structure in α angle, and the internal surface of the outer surface of composite sealing ring 3 and valve seat insert 2 closely cooperates, valve rod 5 center and valve body 1 passage radial direction leave offset, valve rod 5 center line and valve seat insert 2 leave offset at valve body centerline direction, eccentric angle is there is between valve seat insert 2 center line and valve body 1 center line, eccentric angle is there is in valve seat insert 2 center line and valve body 1 by radial direction.
The α angle of valve seat insert 2 is 15-30 degree, and valve seat insert 2 center line and valve body 1 passage radial direction exist eccentric angle and be less than 10 degree.

Claims (2)

1. a two-way four-dimensional eccentric metal hard sealed butterfly damper, comprise valve body (1), valve seat insert (2), composite sealing ring (3), butterfly plate (4), valve rod (5) and pressing plate (6), it is characterized in that: valve body (1), valve seat insert (2), composite sealing ring (3), butterfly plate (4), valve rod (5) and pressing plate (6) are all obliquely installed, the internal surface of valve seat insert (2) is the cone structure in α angle, and the internal surface of the outer surface of composite sealing ring (3) and valve seat insert (2) closely cooperates, valve rod (5) center and valve body (1) passage radial direction leave offset, valve rod (5) center line and valve seat insert (2) leave offset at valve body centerline direction, eccentric angle is there is between valve seat insert (2) center line and valve body (1) center line, eccentric angle is there is in valve seat insert (2) center line and valve body (1) by radial direction.
2. two-way four-dimensional eccentric metal hard sealed butterfly damper according to claim 1, is characterized in that: the α angle of valve seat insert (2) is 15-30 degree, and valve seat insert (2) center line and valve body (1) passage radial direction exist eccentric angle and be less than 10 degree.
CN201520823726.5U 2015-10-23 2015-10-23 Eccentric metal of two -way four -dimension butterfly valve sealed firmly Active CN205064864U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520823726.5U CN205064864U (en) 2015-10-23 2015-10-23 Eccentric metal of two -way four -dimension butterfly valve sealed firmly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520823726.5U CN205064864U (en) 2015-10-23 2015-10-23 Eccentric metal of two -way four -dimension butterfly valve sealed firmly

Publications (1)

Publication Number Publication Date
CN205064864U true CN205064864U (en) 2016-03-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520823726.5U Active CN205064864U (en) 2015-10-23 2015-10-23 Eccentric metal of two -way four -dimension butterfly valve sealed firmly

Country Status (1)

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CN (1) CN205064864U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108953625A (en) * 2017-05-18 2018-12-07 德莱赛公司 It realizes and the butterfly valve of valve assembly reliably sealed is arranged
CN114413006A (en) * 2022-03-01 2022-04-29 北京瑞拓江南自控设备有限公司 Spherical bidirectional sealed four-eccentric butterfly valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108953625A (en) * 2017-05-18 2018-12-07 德莱赛公司 It realizes and the butterfly valve of valve assembly reliably sealed is arranged
CN108953625B (en) * 2017-05-18 2022-12-02 德莱赛公司 Butterfly valve arrangement for achieving reliable sealing of a valve assembly
CN114413006A (en) * 2022-03-01 2022-04-29 北京瑞拓江南自控设备有限公司 Spherical bidirectional sealed four-eccentric butterfly valve

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