CN109812586A - A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure - Google Patents
A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure Download PDFInfo
- Publication number
- CN109812586A CN109812586A CN201711170907.2A CN201711170907A CN109812586A CN 109812586 A CN109812586 A CN 109812586A CN 201711170907 A CN201711170907 A CN 201711170907A CN 109812586 A CN109812586 A CN 109812586A
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- Prior art keywords
- valve
- sealing
- metal
- sealing ring
- flap
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- 238000007789 sealing Methods 0.000 title claims abstract description 61
- 239000002184 metal Substances 0.000 title claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 9
- 229910002804 graphite Inorganic materials 0.000 abstract description 9
- 239000010439 graphite Substances 0.000 abstract description 9
- 239000011229 interlayer Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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Abstract
The invention belongs to sealing structures, and in particular to a kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure.It includes valve body, and valve seat is arranged on valve body, and flap is arranged on valve seat, valve rod (3) are arranged on flap, valve clack sealing ring is arranged between flap and valve seat.The remarkable result of the application is: using whole all-metal structure, cancelling soft graphite interlayer, washes away loss to soft graphite so as to avoid pipeline medium；Position devises U-shaped groove structure among sealing ring, integral sealing ring is divided into two sealing rings with certain elasticity, first is that improve seal pressure in the case where identical valve rod torque acts on, to improving sealing effect by reducing band area, second is that two metal o-rings separated have certain elasticity, sealing performance can be improved with the mismachining tolerance of compensating sealing surface；Third is that the sealing structure of all-metal improves the service life of valve.
Description
Technical field
The invention belongs to sealing structures, and in particular to a kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic packing knot
Structure.
Background technique
Three-eccentric-butterfly-valve is oblique by valve seat center line and valve body center line on the basis of double eccentric (see the A and B in Fig. 1)
It sets, forms an eccentric angle (see the C in Fig. 1), and make valve with the corresponding geometry design of unification on valve clack sealing surface
Valve is existed after valve is closed by valve rod torque between sealing ring and valve seat entirely without any friction in 90 ° of switch rotational travels
Seal pressure is formed between sealing ring and valve seat, to guarantee valve tight closing.Three-eccentric-butterfly-valve is in 0 ° of -90 ° of opening process
In, sealing ring can be detached from sealing surface of seat in the moment of unlatching, and it is in 90 ° of -0 ° of closing process, only in the wink of closing
Between, sealing ring can just contact and compress sealing surface of seat.Butterfly plate sealing surface is relative to sealing surface of seat when three-eccentric-butterfly-valve opens and closes
It is gradually to go out to be detached from and be fade-in compression, eliminates mechanical wear and scratch between two sealing surfaces.
Valve clack sealing ring generally uses the organization plan of multiple layer metal folder soft graphite, to combine hard sealing (metal)
The advantages of with soft seal (soft graphite), three eccentricity hard seal butterfly valve had both been set to have high temperature application conditions, but also with good close
Sealing property.But its disadvantage is also obvious, and soft graphite therein is easy to be washed away loss by medium in the process of running, so that close
Sealing property is difficult to ensure.
Summary of the invention
The purpose of the application is in view of the drawbacks of the prior art, to provide a kind of three eccentricity hard seal butterfly valve all-metal U-shaped
Elastic sealing structure.
The technical solution of the application is: a kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure, including valve
Valve seat is arranged on valve body in body, and flap is arranged on valve seat, valve rod (3) are arranged on flap, flap is arranged between flap and valve seat and seals
Circle.
A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure as described above, wherein valve clack sealing ring
Upper setting all-metal U-shaped sealing ring.
A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure as described above, wherein the full gold
Belong to top and lowermost end of the position in valve clack sealing ring of the setting of U-shaped sealing ring.
The remarkable result of the application is: using whole all-metal structure, cancelling soft graphite interlayer, so as to avoid pipeline
Medium washes away loss to soft graphite；Position devises U-shaped groove structure among sealing ring, and integral sealing ring is divided into two
A sealing ring with certain elasticity, first is that improve in the case where identical valve rod torque acts on by reducing band area
Seal pressure, to improving sealing effect, second is that two separated metal o-ring has certain elasticity, can compensate
The mismachining tolerance of sealing surface improves sealing performance；Third is that the sealing structure of all-metal improves the service life of valve.
Detailed description of the invention
The structural schematic diagram of Fig. 1 three eccentricity hard seal butterfly valve.
Fig. 2 all-metal U-shaped elastic sealing structure.
Label shown in attached drawing: 1 valve body；2 valve clack sealing rings；3 valve rods；4 sealing surface of seats；5.U V-shaped ring.
Specific embodiment
The application is described further with reference to the accompanying drawing:
As shown in the picture, a kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure, using whole all-metal
Structure, position devises U-shaped groove structure among sealing ring, and integral sealing ring is divided into two sealings with certain elasticity
Circle.
Realize that technical characterstic of the invention has:
1. whole all-metal structure
Using whole all-metal material, cancels soft graphite interlayer, avoid pipeline medium and soft graphite is washed away
It is lost.
2.U shape elastic sealing structure
Position devises U-shaped groove structure among sealing ring, and integral sealing ring, which is divided into two, has certain elasticity
Sealing ring.
Claims (3)
1. a kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure, it is characterised in that: including valve body (1), valve body
(1) valve seat is set on, flap is set on valve seat, valve rod (3) are set on flap, valve clack sealing ring is set between flap and valve seat
(2)。
2. a kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure as described in claim 1, feature exist
In: all-metal U-shaped sealing ring is set on valve clack sealing ring (2).
3. a kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure as claimed in claim 2, feature exist
In: top and lowermost end of the position of the all-metal U-shaped sealing ring setting in valve clack sealing ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711170907.2A CN109812586A (en) | 2017-11-22 | 2017-11-22 | A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711170907.2A CN109812586A (en) | 2017-11-22 | 2017-11-22 | A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109812586A true CN109812586A (en) | 2019-05-28 |
Family
ID=66600241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711170907.2A Pending CN109812586A (en) | 2017-11-22 | 2017-11-22 | A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109812586A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012107716A (en) * | 2010-11-18 | 2012-06-07 | Sasakura Engineering Co Ltd | Butterfly valve and seat ring |
| CN202946699U (en) * | 2012-08-15 | 2013-05-22 | 宣达实业集团浙江耐森阀业有限公司 | All-metal both-way pressing butterfly valve |
| CN104653792A (en) * | 2013-11-25 | 2015-05-27 | 山西浩宇阀门科技有限公司 | High-temperature and high-pressure seal butterfly valve |
| CN207999511U (en) * | 2017-11-22 | 2018-10-23 | 中核苏阀科技实业股份有限公司 | A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure |
-
2017
- 2017-11-22 CN CN201711170907.2A patent/CN109812586A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012107716A (en) * | 2010-11-18 | 2012-06-07 | Sasakura Engineering Co Ltd | Butterfly valve and seat ring |
| CN202946699U (en) * | 2012-08-15 | 2013-05-22 | 宣达实业集团浙江耐森阀业有限公司 | All-metal both-way pressing butterfly valve |
| CN104653792A (en) * | 2013-11-25 | 2015-05-27 | 山西浩宇阀门科技有限公司 | High-temperature and high-pressure seal butterfly valve |
| CN207999511U (en) * | 2017-11-22 | 2018-10-23 | 中核苏阀科技实业股份有限公司 | A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure |
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| PB01 | Publication | ||
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