CN203585373U - Wafer type butterfly valve with reliable sealing leakage-proof valve seat - Google Patents
Wafer type butterfly valve with reliable sealing leakage-proof valve seat Download PDFInfo
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- CN203585373U CN203585373U CN201320674421.3U CN201320674421U CN203585373U CN 203585373 U CN203585373 U CN 203585373U CN 201320674421 U CN201320674421 U CN 201320674421U CN 203585373 U CN203585373 U CN 203585373U
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- valve
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- extension limit
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Abstract
The utility model relates to a wafer type butterfly valve with a reliable sealing leakage-proof valve seat. The wafer type butterfly valve comprises a ring-shaped valve body with an upper valve neck and a lower valve neck, a ring-shaped valve seat embedded in the inner wall of the valve body, a butterfly plate, a valve rod and a transmission gear, wherein the valve seat is composed of a frame and an overall sealant sleeve integrally formed with the frame; the sealant sleeve comprises an inner wall sealant layer and two end surface sealant layers on two end surfaces; the wafer type butterfly is characterized in that circumferential epitaxial edges wrapped on the end surface of the ring-shaped valve body are arranged on the two end surface sealant layers respectively; the epitaxial edges on one side are fixedly connected; the epitaxial edges on the other side are movable and detachably connected; the movable epitaxial edge is pressed in a seam allowance formed in the end surface of the frame through a circumferential lug boss arranged at the inner edge of the movable epitaxial edge and sleeved on a corresponding outer edge of the end surface sealant layer in an interference manner; moreover, a circumferential rib is arranged on the circumferential lug boss; a circumferential groove is formed in the inner wall of the valve body; the circumferential rib is clamped in the circumferential groove. The wafer type butterfly valve has the advantages that the leakage of the wafer type butterfly valve can be effectively prevented.
Description
Technical field
The utility model relates to butterfly valve and manufactures field, relates in particular to a kind of wafer type butterfly valve with reliable sealing anti-leak valve seat.
Background technique
Butterfly valve because it is simple in structure, easy and simple to handle, open and close rapidly, and there is good flow regulating function, be widely used in the fields such as oil, coal gas, chemical industry, water treatment.Wafer type butterfly valve is a kind of conventional butterfly valve, and as shown in Figure 1, mainly, by comprising annular valve 2a with upper and lower valve neck 3a, 8a, being inlaid in the round ring seat 4a on valve body 2a inwall, the valve rod 1a of butterfly plate 7a and connection for transmission device forms.In use, disc butterfly plate 7a is along the radially installation of pipeline, and rotates between 0 °～90 ° around valve rod 1a, realizes full cut-off standard-sized sheet.Butterfly valve is as a kind of fluid line valve, its leakproofness is had to strict demand, but still there is evaporating, emitting, dripping or leaking of liquid or gas problem in existing wafer type butterfly valve, main formation reason is (referring to Fig. 1): although the valve seat 4a of existing wafer type butterfly valve is interference fit, be nested in annular valve 2a inner side, but still there is leakage gap in seam 9a place, in engineering construction, wafer type butterfly valve is connected by adpting flange and pipeline, because workmen's flange in docking operation has skew, cause seam 9a place to be exposed in fluid, fluid is by seam crossing leakage slit flow inlet valve body, and in process, the valve rod center hole of valve neck 3a overflows, there is valve leak, impact is normal to be used.Existing valve seat 4a is by ring skeleton 5a and coatedly at the integrated ring packing gum cover 6a in skeleton surface, forms, if by improving seal rubber sleeve structure, by the shutoff of valve seat valve body seam crossing, can effectively prevent valve leak.For this reason, structure how to improve valve seat becomes industry concerned issue.
Model utility content
Main purpose of the present utility model is for the problems referred to above, and a kind of wafer type butterfly valve of reliable sealing anti-leak valve seat is provided, thereby effectively prevents the evaporating, emitting, dripping or leaking of liquid or gas to folder butterfly valve, guarantees that it normally works.
The utility model solves the technological scheme that its technical problem adopts:
A kind of wafer type butterfly valve with reliable sealing anti-leak valve seat, comprise and being with, the annular valve of lower valve neck, be inlaid in the round ring seat on valve interior wall, butterfly plate, through valve seat and butterfly plate, by upper and lower valve neck, be rotatably arranged on valve rod and the transmission device on valve body, described valve seat consists of ring skeleton and integrated seal rubber sleeve integrated with it, described integrated seal rubber sleeve is comprised of two end face seal glue-lines that are coated on the inner wall sealing glue-line of inboard wall of skeleton and are coated on respectively skeleton both ends of the surface, it is characterized in that described two end face seal glue-lines are respectively equipped with the ring week extension limit of coated described annular valve end face, and the extension limit of a side end face sealant layer is to be integrated with this end face seal glue-line the fixing extension limit being fixedly connected with, the extension limit of opposite side end face seal glue-line is to be the dismantled and assembled activity extension limit being connected with this end face seal glue-line, ring that described activity extension limit arranges by its inner rim week, boss was pressed in the corresponding seam arranging of skeleton end face interference in corresponding end face seal glue-line outer rim, and all fins of ring are set on the surface of contact of all boss of ring and described annular valve inwall, the ring week groove corresponding with all fins of described ring is set on described annular valve inwall, and all fins of described ring snap fits in all grooves of described ring.
At described two end face seal glue-lines and on the outside end face on the activity extension limit connecting respectively and fixing extension limit, be equipped with annular concentric sealing fin.
The beneficial effects of the utility model are: the wafer type butterfly valve with reliable sealing anti-leak valve seat that adopts the utility model to provide, because both ends of the surface sealant layer is respectively equipped with ring week extension limit of coated described annular valve end face, like this seam crossing between valve seat and valve body ring-shaped inner wall is covered to sealing completely, therefore, can effectively prevent that in pipeline, fluid enters in valve body, effectively avoid the evaporating, emitting, dripping or leaking of liquid or gas of the valve causing because of reasons such as engineering constructions, guarantee that valve normally works.In addition, adopt fixing extension limit and activity extension limit structure, be convenient to technique assembling, simple in structure, easy to use.Especially, after ring is also provided with all fins of ring and assembling on all boss, be installed on the ring week arranging on valve interior wall in groove, thus, make activity extension limit fixing more firm, make wafer type butterfly valve reach reliable sealing.The utility model has improved the sealability to folder butterfly valve, guarantees construction quality, is suitable in industry and promotes.
Accompanying drawing explanation
Fig. 1 is the structural representation of wafer type butterfly valve in prior art;
Fig. 2 is the structural representation of the wafer type butterfly valve with reliable sealing anti-leak valve seat that provides of the utility model;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is structure and the assembling schematic diagram of valve seat in Fig. 2;
Fig. 5 is the structural representation of valve body in Fig. 3.
In figure:
1a valve rod, 2a valve body, the upper valve neck of 3a, 4a valve seat, 5a skeleton, 6a seal rubber sleeve, 7a butterfly plate, valve neck under 8a;
1 valve rod, 2 transmission devices, valve neck on 3,4 valve bodies, 5 valve seats, 6 skeletons, 7 seal rubber sleeves, 70 valve seat axis holes, 71-72 end face seal glue-line, 73 inner wall sealing glue-lines, 74 activity extension limits, 75 seams, 76 ring packing fins, the all boss of 77 ring, 78 fixing extension limits, all fins of 79 ring, 8 butterfly plates, 9 times valve necks, all grooves of 10 ring.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
Fig. 2～Fig. 3 illustrates a kind of wafer type butterfly valve with reliable sealing anti-leak valve seat, comprise the annular valve 4 with upper and lower valve neck 3,9, be inlaid in the round ring seat 5 on valve body 4 inwalls, butterfly plate 8, through valve seat 4 and butterfly plate 8, by upper and lower valve neck, be rotatably arranged on valve rod 1 and the transmission device 2 on valve body 4, in the present embodiment, transmission device 2 has adopted manual tune handle, also can adopt electronic, pneumatic actuator.
As shown in Figure 4, described valve seat 5 consists of ring skeleton 6 and integrated seal rubber sleeve 7 integrated with it.Framework material can adopt phenolic resin, glass fibre reinforced plastics of certain degree of hardness and intensity etc., the material of seal rubber sleeve according to use flowing medium and different, as foodstuff adopts natural rubber, oiliness, alkaline medium can adopt nitrile rubber, and high temperature media can adopt fluorine rubber, silicone rubber etc.In reality processing, seal rubber sleeve 7 is one-body molded by Shooting Technique and skeleton.Described integrated seal rubber sleeve 7 is comprised of two the end face seal glue-lines 71,72 that are coated on the inner wall sealing glue-line 73 of skeleton 6 inwalls and are coated on respectively skeleton both ends of the surface, of the present utility modelly be characterised in that described two end face seal glue-lines 71,72 are respectively equipped with ring week extension limit of coated described annular valve end face, and the extension limit of a side end face sealant layer 72 is to be integrated with this end face seal glue-line the fixing extension limit 78 being fixedly connected with, the extension limit of opposite side end face seal glue-line 71 is to be the dismantled and assembled activity extension limit 74 being connected with this end face seal glue-line.Ring that described activity extension limit 74 arranges by its inner rim week, boss 77 was pressed in the corresponding seam 75 arranging of skeleton end face interference in corresponding end face seal glue-line 71 outer rims.And arrange and encircle all fins 79 on the surface of contact of inwall that encircles all boss 77 and described annular valve 4, referring to Fig. 5, the ring week groove 10 corresponding with all fins 79 of described ring is set on described annular valve inwall, and after assembling, all fins 79 of described ring snap fits in all grooves 10 of described ring.
Adopt above-mentioned seal rubber sleeve structure, by fixing extension limit 78 and activity extension limit 74, the seam crossing between valve seat 5 and valve body 4 ring-shaped inner wall is covered to sealing completely.Can effectively prevent that in pipeline, fluid enters in valve body, even in construction, there is skew in flange when docking, also can not cause valve seat, valve body seam crossing exposed, therefore avoided the evaporating, emitting, dripping or leaking of liquid or gas of valve body.Especially, after ring is also provided with all fins 79 of ring on all boss 77 and installs, be installed on the ring week arranging on valve interior wall in groove 10, thus, make activity extension limit 74 fixing more firm, make wafer type butterfly valve reach reliable sealing.
Feature of the present utility model is also to be equipped with on above-mentioned two end face seal glue-lines 71,72 and the activity extension limit 74 connecting respectively and the outside end face on fixing extension limit 78 annular concentric sealing fin 76.Sealing fin is actual is integrated by injection molding technique, can adopt multiple; Like this, form seal face, improved product hermeticity energy, further guaranteed the sealing that flange connects in engineering construction, guaranteed construction quality.
The above, it is only preferred embodiment of the present utility model, not structure of the present utility model and shape are done to any pro forma restriction, any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of technical solutions of the utility model.
Claims (2)
1. the wafer type butterfly valve with reliable sealing anti-leak valve seat, comprise and being with, the annular valve of lower valve neck, be inlaid in the round ring seat on valve interior wall, butterfly plate, through valve seat and butterfly plate, by upper and lower valve neck, be rotatably arranged on valve rod and the transmission device on valve body, described valve seat consists of ring skeleton and integrated seal rubber sleeve integrated with it, described integrated seal rubber sleeve is comprised of two end face seal glue-lines that are coated on the inner wall sealing glue-line of inboard wall of skeleton and are coated on respectively skeleton both ends of the surface, it is characterized in that described two end face seal glue-lines are respectively equipped with the ring week extension limit of coated described annular valve end face, and the extension limit of a side end face sealant layer is to be integrated with this end face seal glue-line the fixing extension limit being fixedly connected with, the extension limit of opposite side end face seal glue-line is to be the dismantled and assembled activity extension limit being connected with this end face seal glue-line, ring that described activity extension limit arranges by its inner rim week, boss was pressed in the corresponding seam arranging of skeleton end face interference in corresponding end face seal glue-line outer rim, and all fins of ring are set on the surface of contact of all boss of ring and described annular valve inwall, the ring week groove corresponding with all fins of described ring is set on described annular valve inwall, and all fins of described ring snap fits in all grooves of described ring.
2. the wafer type butterfly valve with reliable sealing anti-leak valve seat according to claim 1, is characterized in that at described two end face seal glue-lines and is equipped with annular concentric on the outside end face on the activity extension limit connecting respectively and fixing extension limit sealing fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320674421.3U CN203585373U (en) | 2013-10-29 | 2013-10-29 | Wafer type butterfly valve with reliable sealing leakage-proof valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320674421.3U CN203585373U (en) | 2013-10-29 | 2013-10-29 | Wafer type butterfly valve with reliable sealing leakage-proof valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203585373U true CN203585373U (en) | 2014-05-07 |
Family
ID=50583299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320674421.3U Withdrawn - After Issue CN203585373U (en) | 2013-10-29 | 2013-10-29 | Wafer type butterfly valve with reliable sealing leakage-proof valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203585373U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542111A (en) * | 2013-10-29 | 2014-01-29 | 天津市大站阀门总厂 | Double-clip type butterfly valve with leak-proof valve seat having reliable sealing performance |
-
2013
- 2013-10-29 CN CN201320674421.3U patent/CN203585373U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542111A (en) * | 2013-10-29 | 2014-01-29 | 天津市大站阀门总厂 | Double-clip type butterfly valve with leak-proof valve seat having reliable sealing performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140507 Effective date of abandoning: 20160210 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |