CN202100732U - Double-eccentric dual-sealing butterfly valve - Google Patents
Double-eccentric dual-sealing butterfly valve Download PDFInfo
- Publication number
- CN202100732U CN202100732U CN2011201888248U CN201120188824U CN202100732U CN 202100732 U CN202100732 U CN 202100732U CN 2011201888248 U CN2011201888248 U CN 2011201888248U CN 201120188824 U CN201120188824 U CN 201120188824U CN 202100732 U CN202100732 U CN 202100732U
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- Prior art keywords
- valve
- butterfly
- butterfly plate
- valve body
- seal ring
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- Expired - Fee Related
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Abstract
The utility model relates to a double-eccentric dual-sealing butterfly valve, which comprises a valve body. A valve seat is arranged in an inner cavity of the valve body, a valve body sealing ring is arranged on the valve seat, a valve shaft communicated with the inner cavity of the valve body is arranged on the valve body, one end of the valve shaft in the inner cavity of the valve body is connected with a butterfly plate, a step recessed inwards is arranged on the outer periphery of the butterfly plate, and a butterfly plate sealing assembly is installed on the step. The butterfly plate sealing assembly comprises a hard sealing ring and a soft sealing ring and is pressed on the step through an annular press plate fixedly installed outside the step. One face attached to the step of the hard sealing ring is provided with a groove with a C-shaped cross section. The butterfly valve adopts the process that the C-shaped groove is arranged on the hard sealing ring. Compared with the prior art, the butterfly valve improves elasticity of the hard sealing ring, thereby improving sealing performance of the sealing rings and comprehensive performance of the sealing rings of the butterfly plate.
Description
Technical field
The utility model relates to a kind of butterfly valve, is specifically related to a kind of improvement structure of butterfly plate seal ring of double eccentric butterfly valve.
Background technique
Double eccentric butterfly valve comprises valve body; Body cavity is provided with valve seat, and valve seat is provided with valve seals, and valve body is provided with the valve shaft that communicates with body cavity; Valve shaft is positioned on the end of body cavity and is connected with butterfly plate; The step that concaves is arranged on the excircle of butterfly plate, the butterfly plate seal ring is installed on the step, the butterfly plate seal ring is pressed on the step through being fixedly mounted on the outer ring pressing plate of step.The butterfly plate seal ring of double eccentric butterfly valve has hard seal ring and soft seal circle usually; The material of manufacturing hard seal ring can be steel, stainless steel or copper etc.; The material of manufacturing the soft seal circle can be rubber, Expanded graphite or asbestos etc.; Existing butterfly plate seal ring is made up of single hard seal ring or single soft seal circle is formed, high, the long service life of the butterfly plate seal ring intensity that adopts single hard seal ring to form, but sealing effect is poor; The butterfly plate seal ring good sealing effect that adopts single soft seal circle to form, but intensity is low, working life short.
In order to improve the comprehensive usability of butterfly plate seal ring; Someone improves the butterfly plate seal ring; Like the patent No. disclosed a kind of two eccentric soft or hard double sealing butterfly valves in the patent documentation of CN200820232111.5; The butterfly plate seal ring of this butterfly valve is combined into by soft seal circle and hard seal ring, has improved the combination property of butterfly plate seal ring to a certain extent, but still exists because the not high shortcoming of sealing that hard seal ring is brought.
Summary of the invention
To the deficiency that existing technology exists, the purpose of the utility model is to provide a kind of and improves the sealing of butterfly plate seal ring through the structure that changes hard seal ring, thereby improves a kind of two eccentric double sealing butterfly valves of the combination property of butterfly plate seal ring seal ring.
For realizing above-mentioned purpose, the utility model provides following technological scheme: a kind of two eccentric double sealing butterfly valves include valve body; Body cavity is provided with valve seat, and valve seat is provided with valve seals, and valve body is provided with the valve shaft that communicates with body cavity; Valve shaft is positioned on the end of body cavity and is connected with butterfly plate; The step that concaves is arranged on the excircle of butterfly plate, the butterfly plate black box is installed on the step, described butterfly plate black box includes hard seal ring and soft seal circle; The butterfly plate black box is pressed on the step through being fixedly mounted on the outer ring pressing plate of step, it is characterized in that: offer groove on the face that described hard seal ring and step fit.
Through adopting technique scheme; The butterfly plate black box adopts hard seal ring and soft seal circle to constitute, and offers groove on the face that fits of hard seal ring and step, makes hard seal ring have elasticity; Make itself and step fit tightr; Overcome the problem of hard sealing difference, thereby improve the sealability of butterfly plate black box, make the butterfly valve seal assembly have comprehensive performance.
The utility model further is designed to: the sectional shape of the groove of offering on the described hard seal ring is a C shape.
Adopt technique scheme, the C shape groove that hard seal ring is provided with has level and smooth inwall, reduces the loss in use of hard seal ring, the working life of improving hard seal ring.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is the embodiment's of the utility model a main cross-sectional schematic.
Fig. 2 is the embodiment's of the utility model a side view.
Fig. 3 is the A partial enlarged drawing of Fig. 1.
Embodiment
Referring to accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, the disclosed a kind of two eccentric double sealing butterfly valves of the utility model comprise valve body 1; Valve body 1 inner chamber is provided with valve seat 2; Valve seat 2 is provided with valve seals 9, and valve body 1 is provided with the valve shaft 3 that communicates with valve body 1 inner chamber, and valve shaft 3 is positioned on the end of valve body 1 inner chamber and is connected with butterfly plate 4; The step 41 that concaves is arranged on the excircle of butterfly plate 4; The butterfly plate black box is installed on the step 41, and described butterfly plate black box includes hard seal ring 7 and soft seal circle 8, and the butterfly plate black box is pressed on the step 41 through being fixedly mounted on step 41 outer ring pressing plates 5; Ring pressing plate 5 is fixedly mounted on outside the step 41 through screw 6; Offer groove on the face that described hard seal ring 7 and step fit, and this groove is that sectional shape is the circular groove of C shape, the sectional shape of this groove can also be V-arrangement, lower frame etc. certainly; The utility model preferentially adopts C shape.
Claims (2)
1. a two eccentric double sealing butterfly valve includes valve body, and body cavity is provided with valve seat; Valve seat is provided with valve seals; Valve body is provided with the valve shaft that communicates with body cavity, and valve shaft is positioned on the end of body cavity and is connected with butterfly plate, and the step that concaves is arranged on the excircle of butterfly plate; The butterfly plate seal assembly is installed on the step; Described butterfly plate black box includes hard seal ring and soft seal circle, and the butterfly plate black box is pressed on the step through being fixedly mounted on the outer ring pressing plate of step, it is characterized in that: offer groove on the face that described hard seal ring and step fit.
2. two eccentric double sealing butterfly valve according to claim 1, it is characterized in that: the sectional shape of the groove of offering on the described hard seal ring is a C shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201888248U CN202100732U (en) | 2011-06-07 | 2011-06-07 | Double-eccentric dual-sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201888248U CN202100732U (en) | 2011-06-07 | 2011-06-07 | Double-eccentric dual-sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100732U true CN202100732U (en) | 2012-01-04 |
Family
ID=45386746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201888248U Expired - Fee Related CN202100732U (en) | 2011-06-07 | 2011-06-07 | Double-eccentric dual-sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100732U (en) |
Cited By (3)
| 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 |
| CN104896121A (en) * | 2015-05-25 | 2015-09-09 | 蚌埠南自仪表有限公司 | Valve plate and valve body sealing cooperation structure of three-eccentric hard sealing butterfly valve |
| CN108533771A (en) * | 2018-06-08 | 2018-09-14 | 无锡美瑞克阀门制造有限公司 | A kind of eccentric-butterfly-valve structure being applicable in valve seat soft and hard seal |
-
2011
- 2011-06-07 CN CN2011201888248U patent/CN202100732U/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 |
| CN104896121A (en) * | 2015-05-25 | 2015-09-09 | 蚌埠南自仪表有限公司 | Valve plate and valve body sealing cooperation structure of three-eccentric hard sealing butterfly valve |
| CN108533771A (en) * | 2018-06-08 | 2018-09-14 | 无锡美瑞克阀门制造有限公司 | A kind of eccentric-butterfly-valve structure being applicable in valve seat soft and hard seal |
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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: 20120104 Termination date: 20170607 |