CN201615231U - Dual sealing structure of butterfly valve - Google Patents
Dual sealing structure of butterfly valve Download PDFInfo
- Publication number
- CN201615231U CN201615231U CN2010201099647U CN201020109964U CN201615231U CN 201615231 U CN201615231 U CN 201615231U CN 2010201099647 U CN2010201099647 U CN 2010201099647U CN 201020109964 U CN201020109964 U CN 201020109964U CN 201615231 U CN201615231 U CN 201615231U
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- valve
- sealing
- sealing part
- hard
- valve plate
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Abstract
The utility model discloses a dual sealing structure of a butterfly valve, comprising two main body parts: a valve body and a valve plate; the sealing part of the valve body or the valve plate is provided with an 'M'-shaped dual sealing structure which consists of a hard sealing part and a flexible sealing part; the valve seat of the hard sealing part is a conical surface and the valve plate of the hard sealing part is a spherical surface; a balancing trough is arranged on the sealing part of the flexible sealing part along the flexible sealing part; furthermore, the balancing trough is communicated with the water inlet chamber of the valve by a plurality of self-sealing holes on the valve body or the valve plate. In the utility model, owning to the soft and hard combination of the 'M'-shaped structure, the sealing effect of the valve can be reinforced by the self-sealing hole. Therefore, the dual sealing structure of the butterfly valve has the advantages of reliable sealing, bidirectional sealing, long service life and wide application range.
Description
Technical field
The utility model relates to a kind of valve mechanism, particularly relates to a kind of structure of butterfly valve double seal form.
Technical background
Butterfly structure valve is owing to have advantages such as volume is little, in light weight, simple in structure and become the main developing direction of valve, developed the butterfly multifunctional non-return valve is arranged, various ways such as butterfly pipe network control valve, butterfly modulating valve.But this valve seal technology also is in developing stage at present, mainly contains soft seal and hard sealing two big classes.There is the restriction in working life in soft seal, and is not suitable for the High Temperature High Pressure occasion; The sealability of hard sealing is limited, and the seepage phenomenon is serious.It is single to show as the valve seat material, and seal form is single.Though patent CN200720109884.X has announced a kind of high pressure double seal butterfly valve, only can ensure one-way sealing, can't realize the two way sealed function, and need dispose parts such as pressure ring, fastening piece on valve seat, can't adapt to smaller diameter valve production.
The model utility content
Technical problem to be solved in the utility model provides a kind of butterfly valve double sealing structure reliable, that can realize two way sealed, long service life, wide accommodation that seals.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: the butterfly valve double sealing structure, comprise valve body, two main bodys of valve plate, sealing position on valve body or valve plate is provided with " M " shape double sealing structure that partly is made of hard hermetic unit and flexible sealing, its hard hermetic unit, valve seat is a conical surface, and valve plate is a sphere; Partly be provided with compensating groove at upper edge, the sealing position flexible sealing that the flexible sealing part is set, and compensating groove is communicated with the water-inlet cavity of valve by the some selfsealings hole that is located on valve body or the valve plate.
Further technological scheme is: described flexible sealing partly adopts embedded mode to fix, and perhaps adopts the pressing plate mode to fix.
When adopting embedded mode to install to be arranged on the valve body, compensating groove and selfsealings hole all are arranged on the valve body, and the side that the selfsealings hole is distributed in valve body does not have axis hole one an end valve seat is communicated with the water-inlet cavity of valve; When adopting the pressing plate mode to install to be arranged on the valve plate, compensating groove and selfsealings hole all are arranged on the valve plate, and the light face that the selfsealings hole is distributed in valve plate does not have a shaft coupling hole is communicated with the water-inlet cavity of valve.
The hard hermetic unit surface of valve body and valve plate can be passed through different process such as pile-up welding hard alloy, surperficial supersonic spray coating, hard chromium plating respectively and realize sclerosis, reaches antirust wear-resisting purpose.The flexible sealing part can adopt non-metallic materials such as rubber or plastics.When valve bears when pressing to the pressure medium of valve plate by water-inlet cavity, medium can enter the compensating groove of flexible sealing part mounting end by the selfsealings hole on valve body or the valve plate, promote flexible material to the primary sealing area pressuring direction from the back side, thereby realize valve two way sealed function.
Replenish as of the present utility model, described flexible sealing face also can adopt low hardness metallic material such as Austenitic Stainless Steel or brass, connects form by pressing plate and selects to be installed on valve plate or the valve seat according to the valve aperture size.
Adopt the butterfly valve double sealing structure of technique scheme, owing to leave a cavity between partly at the hard hermetic unit of " M " shape and flexible sealing, can envelope expire medium in this cavity during practical application, in the valve closing process, because the variation of volume, this place's medium is higher than the pressure at valve two ends with formation, thereby intercepts the crossfire of valve two ends medium, realizes the zero leakage function.Simultaneously in " M " structure, the one end is a flexible material, and an end is a hard metal, and when valve bore high pressure, the hard sealing can be protected flexible sealing, prevents that actual seal pressure from surpassing the permission specific pressure of flexible material, thereby prolongs flexible sealing working life.
In sum, adopt the butterfly valve double sealing structure of technique scheme, because the combination of " M " structure soft or hard, the flexible sealing part can make valve enhanced leaktightness effect by the selfsealings hole.Therefore but the structure of this butterfly valve double seal form has the advantage of the reliable two way sealed of sealing, long service life, wide accommodation.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an I place partial enlarged drawing among Fig. 1.
Fig. 3 is the utility model different structure schematic representation.
Fig. 4 is an II place partial enlarged drawing among Fig. 3.
Fig. 5, Fig. 6 are respectively other structural representations of the present utility model.
Embodiment
Referring to Fig. 1, Fig. 2, the butterfly valve double sealing structure comprises valve body 2 and valve plate 1, and valve plate 1 is provided with spherical hard hermetic unit 3 and flexible sealing part 6, be provided with cavity 5 between spherical hard compact part enfeoffment 3 and flexible sealing part 6, they constitute " M " shape double seal form.Corresponding with the hard hermetic unit 3 on the valve plate, valve body 2 is provided with hard conical seal (contact) face 4.Hard conical seal (contact) face 4 on spherical sealing 3 of hard on the valve plate 1 and the valve body 2 can pass through different process such as pile-up welding hard alloy, surperficial supersonic spray coating, hard chromium plating respectively and realize sclerosis, reaches antirust wear-resisting purpose.Flexible sealing part 6 adopts non-metallic materials such as rubber or plastics to be embedded in the sealing position of valve plate 1, upper edge, the sealing position flexible sealing part 6 that flexible sealing part 6 is set on valve plate 1 is provided with compensating groove 7, compensating groove 7 is communicated with some selfsealings hole 8 on being located at valve plate, and the light face that selfsealings hole 8 is distributed in valve plate does not have a shaft coupling hole is communicated with the water-inlet cavity of valve.When valve plate 1 bears when pressing to the pressure medium of valve shaft end by the valve water-inlet cavity, medium can enter the compensating groove 7 of flexible sealing part 6 mounting ends by selfsealings hole 8, promotes flexible material to the primary sealing area pressuring direction, thereby realizes valve two way sealed function.
Referring to Fig. 3, Fig. 4, the utility model also can be selected to be installed on the valve body 2 according to the valve aperture size, and flexible sealing part 6 adopts embedded form to install.Its principle is with function and be installed on the valve plate consistent, no longer burdensome.
Referring to Fig. 5 and Fig. 6, replenish as of the present utility model, flexible sealing part 6 adopts non-metallic material and low hardness metallic material such as Austenitic Stainless Steel or brass such as rubber or plastics, can adopt pressing plate 9 to select to be installed on valve plate 1 or the valve body 2 according to the valve aperture size by bolt 10.
Claims (2)
1. butterfly valve double sealing structure, comprise valve body, two main bodys of valve plate, it is characterized in that the sealing position on valve body or valve plate is provided with " M " shape double sealing structure that partly is made of hard hermetic unit and flexible sealing, its hard hermetic unit, valve seat is a conical surface, and valve plate is a sphere; Partly be provided with compensating groove at upper edge, the sealing position flexible sealing that the flexible sealing part is set, and compensating groove is communicated with the water-inlet cavity of valve by the some selfsealings hole that is located on valve body or the valve plate.
2. butterfly valve double sealing structure according to claim 1 is characterized in that described flexible sealing partly adopts embedded mode to fix, and perhaps adopts the pressing plate mode to fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201099647U CN201615231U (en) | 2010-02-09 | 2010-02-09 | Dual sealing structure of butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201099647U CN201615231U (en) | 2010-02-09 | 2010-02-09 | Dual sealing structure of butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201615231U true CN201615231U (en) | 2010-10-27 |
Family
ID=43001600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201099647U Expired - Fee Related CN201615231U (en) | 2010-02-09 | 2010-02-09 | Dual sealing structure of butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201615231U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343989A (en) * | 2013-07-29 | 2015-02-11 | 费希尔控制国际公司 | Fluid valve apparatus having enclosed seals |
| CN111043332A (en) * | 2019-12-25 | 2020-04-21 | 凯喜姆阀门有限公司 | Metal sealed three eccentric butterfly valve |
-
2010
- 2010-02-09 CN CN2010201099647U patent/CN201615231U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343989A (en) * | 2013-07-29 | 2015-02-11 | 费希尔控制国际公司 | Fluid valve apparatus having enclosed seals |
| CN104343989B (en) * | 2013-07-29 | 2019-10-11 | 费希尔控制国际公司 | Liquid stream valve gear with closed sealing element |
| CN111043332A (en) * | 2019-12-25 | 2020-04-21 | 凯喜姆阀门有限公司 | Metal sealed three eccentric butterfly valve |
| CN111043332B (en) * | 2019-12-25 | 2022-02-11 | 凯喜姆阀门有限公司 | Metal sealed three eccentric butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20160209 |