CN207999511U - 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
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- CN207999511U CN207999511U CN201721568777.3U CN201721568777U CN207999511U CN 207999511 U CN207999511 U CN 207999511U CN 201721568777 U CN201721568777 U CN 201721568777U CN 207999511 U CN207999511 U CN 207999511U
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Abstract
The utility model belongs to sealing structure, 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) is 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 construction, cancels soft graphite interlayer, loss is washed away 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, when by reduce band area make identical valve rod torque act under improve seal pressure, to improve sealing effect, 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, the sealing structure of all-metal improves the service life of valve.
Description
Technical field
The utility model belongs to sealing structure, and in particular to a kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic packing knot
Structure.
Background technology
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 switched at 90 ° in rotational travel, is existed by valve rod torque after valve is closed entirely without any friction between sealing ring and valve seat
Seal pressure is formed between sealing ring and valve seat, to ensure 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 the mechanical wear between two sealing surfaces and scratch.
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.
Invention content
The purpose of this utility model 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 utility model is:A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure, packet
Valve body is included, valve seat is set on valve body, flap is set on valve seat, valve rod (3) is set on flap, flap is set between flap and valve seat
Sealing ring.
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 utility model is:Using whole all-metal construction, cancel soft graphite interlayer, so as to avoid
Pipeline medium washes away loss to soft graphite;Position devises U shape slot structures among sealing ring, by integral sealing ring point
Two sealing rings with certain elasticity are divided into, first, making in the case where identical valve rod torque acts on by reducing band area
Improve seal pressure, to improve sealing effect, second is that two separated metal o-ring has certain elasticity, it can
With the mismachining tolerance of compensating sealing surface, sealing performance is improved;Third, the sealing structure of all-metal improves the service life of valve.
Description of the drawings
The structural schematic diagram of Fig. 1 three eccentricity hard seal butterfly valves.
Fig. 2 all-metal U-shaped elastic sealing structures.
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 rings.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings:
Valve seat is arranged on valve body in a kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure, including valve body,
Flap is set on valve seat, valve rod is set on flap, valve clack sealing ring is set between flap and valve seat.
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.
Realize that the technical characterstic of the utility model has:
1. whole all-metal construction
Whole all-metal material is used, cancels soft graphite interlayer, avoids pipeline medium and soft graphite is washed away
It is lost in.
2.U shape elastic sealing structures
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) is 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 |
|---|---|---|---|
| CN201721568777.3U CN207999511U (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 |
|---|---|---|---|
| CN201721568777.3U CN207999511U (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 |
|---|---|
| CN207999511U true CN207999511U (en) | 2018-10-23 |
Family
ID=63836278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721568777.3U Active CN207999511U (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) | CN207999511U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812586A (en) * | 2017-11-22 | 2019-05-28 | 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 CN201721568777.3U patent/CN207999511U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812586A (en) * | 2017-11-22 | 2019-05-28 | 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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| GR01 | Patent grant |