CN203743449U - Demountable flange butterfly valve - Google Patents
Demountable flange butterfly valve Download PDFInfo
- Publication number
- CN203743449U CN203743449U CN201320894201.1U CN201320894201U CN203743449U CN 203743449 U CN203743449 U CN 203743449U CN 201320894201 U CN201320894201 U CN 201320894201U CN 203743449 U CN203743449 U CN 203743449U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- valve body
- rubber
- boss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of valves and particularly relates to a demountable flange butterfly valve comprising a valve body, a rubber valve seat, a valve plate and a valve shaft. The rubber valve seat is nested in the valve body. The valve body is detachably connected with the rubber valve seat. The part, fitting the rubber valve seat, of an inner cavity of the valve body is provided with a boss; the rubber valve seat is provided with a recess, matching with the boss, corresponding to the boss; the boss is embedded in the recess; the flange end of the valve body is provided with a groove, and correspondingly the rubber valve seat is provided with an extension fastening to the groove of the valve body. A shaft hole of the rubber valve seat is provided with a seal O-shaped ring. A shaft hole, connected with the valve shaft, of the valve plate is a square vale shaft hole in a pinless structure, and correspondingly the valve shaft is square. The demountable flange butterfly valve has the advantages that the structure is simple, sealing performance is good, maintenance is facilitated, the valve seat is replaceable and the service life of the valve is long; valve torque is decreased effectively, and the problems that the valve shaft leaks water and field maintenance is difficult are solved.
Description
Technical field
The utility model belongs to valve technology field, relates in particular to a kind of detachable flange butterfly.
Background technique
Developing rapidly along with oil, coal gas, chemical industry, metallurgy, electric power and equipment manufacture at present, technological level and control require day by day to improve, process units Technical advancement is also improving constantly, the requirement of the product of the raising of process units to its accessory that uses is also inevitable more and more higher, as important controlling component---the valve in whole process control system, the effect of its generation is most important, and the performance of valve is had higher requirement.The existing century-old history of use of metal valve, but adopt the valve of metal sealing to be difficult to accomplish to seal completely.Butterfly valve structure is simple, volume is little, lightweight, only formed by a few parts, and only need half-twist to get final product fast opening and closing, simple to operate, this valve has good fluid control characteristic simultaneously, but because most employing metallic material of existing butterfly valve is manufactured, the valve seat of body cavity is subject to the impact of medium for a long time, causes the not problem such as easy-maintaining, replacing.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of simple in structure, good seal performance, easy to maintenance, valve seat is replaceable and the detachable flange butterfly of long service life, effectively reduce valve torque, solved that valve shaft leaks and the problem of field maintenance difficulty.
The technical solution adopted in the utility model is:
A kind of detachable flange butterfly, comprise valve body, rubber valve seat, valve plate and valve shaft, it is characterized in that: described rubber valve seat is linked in described valve body, detachable connection between described valve body and described rubber valve seat, the inner chamber of described valve body and described rubber valve seat cooperation place are provided with boss, the described rubber valve seat at the lug boss position place of corresponding described valve body is provided with the groove mating with described boss, described recess-mounted is on described boss, the flange end of described valve body is provided with groove, corresponding described rubber valve seat is provided with the extension fastening with described valve body groove place.
Further, the axis hole position of described rubber valve seat is provided with sealing O type circle.
Further, axis hole that described valve plate is connected with described valve shaft adopt valve shaft side of axis hole side without pin mechanism, corresponding described valve shaft adopts bearing band side.
Further, described valve shaft forms by three sections, and the outer surface of first paragraph is circular, and the outer surface of second segment is polygonal, and the outer surface of the 3rd section is circular, and the circular diameter of the 3rd section of outer surface is less than first paragraph outer surface diameter of a circle.
The beneficial effects of the utility model are: adopt detachable connection between valve body and rubber valve seat, avoided not easily changeable problem after valve seat damage; The inner chamber of valve body and rubber valve seat cooperation place are provided with boss, the rubber valve seat at corresponding valve body lug boss position place is provided with the groove mating with boss, the flange end of valve body is provided with groove, corresponding rubber valve seat is provided with the extension fastening with valve body groove place, guarantees the sealing between valve body and rubber valve seat; The axis hole position of rubber valve seat is provided with sealing O type circle, guarantee the location of axis hole, valve plate be connected with valve shaft adopt valve shaft side of axis hole side without pin mechanism, valve shaft adopts bearing band side, effectively reduce valve torque, solved that valve shaft leaks and the problem of field maintenance difficulty, the operating method of whole valve is simple, convenient, and using effect is good.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of valve plate of the present utility model;
Fig. 3 is the plan view of valve plate of the present utility model;
Fig. 4 is the structural representation of valve shaft of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
In figure: 1-valve body, 2-rubber valve seat, 3-valve plate, 4-valve shaft, 5-boss, 6-groove, 7-groove, 8-extension, 9-axis hole, 10-sealing O type circle.
Embodiment 1:
The utility model comprises valve body 1, rubber valve seat 2, valve plate 3 and valve shaft 4, rubber valve seat 2 is linked in valve body 1, detachable connection between valve body 1 and rubber valve seat 2, avoid not easily changeable problem after valve seat damage, the inner chamber of valve body 1 and rubber valve seat 2 cooperation places are provided with boss 5, the rubber valve seat 2 of corresponding valve body 1 boss 5 positions is provided with the groove 6 mating with boss 5, groove 6 is embedded on boss 5, the flange end of valve body 1 is provided with groove 7, corresponding rubber valve seat 2 is provided with the extension 8 fastening with valve body 1 groove 7 places, guarantee the sealing between valve body 1 and rubber valve seat 2, axis hole 9 positions of rubber valve seat 2 are provided with sealing O type circle 10, guarantee the location of axis hole 9, the axis hole 9 that valve plate 3 is connected with valve shaft 4 adopt valve shaft side of axis hole side without pin mechanism, corresponding valve shaft 4 adopts bearing band side, valve shaft 4 forms by three sections, the outer surface of first paragraph is circular, the outer surface of second segment is Hexagon, the outer surface of the 3rd section is circular, the circular diameter of the 3rd section of outer surface is less than first paragraph outer surface diameter of a circle, effectively reduce valve torque, solve that valve shaft leaks and the problem of field maintenance difficulty, the operating method of whole valve is simple, convenient, using effect is good.
Embodiment 2:
The utility model comprises valve body 1, rubber valve seat 2, valve plate 3 and valve shaft 4, rubber valve seat 2 is linked in valve body 1, detachable connection between valve body 1 and rubber valve seat 2, avoid not easily changeable problem after valve seat damage, the inner chamber of valve body 1 and rubber valve seat 2 cooperation places are provided with boss 5, the rubber valve seat 2 of corresponding valve body 1 boss 5 positions is provided with the groove 6 mating with boss 5, groove 6 is embedded on boss 5, the flange end of valve body 1 is provided with groove 7, corresponding rubber valve seat 2 is provided with the extension 8 fastening with valve body 1 groove 7 places, guarantee the sealing between valve body 1 and rubber valve seat 2, axis hole 9 positions of rubber valve seat 2 are provided with sealing O type circle 10, guarantee the location of axis hole 9, the axis hole 9 that valve plate 3 is connected with valve shaft 4 adopt valve shaft side of axis hole side without pin mechanism, corresponding valve shaft 4 adopts bearing band side, valve shaft 4 forms by three sections, the outer surface of first paragraph is circular, the outer surface of second segment is quadrilateral, the outer surface of the 3rd section is circular, the circular diameter of the 3rd section of outer surface is less than first paragraph outer surface diameter of a circle, effectively reduce valve torque, solve that valve shaft leaks and the problem of field maintenance difficulty, the operating method of whole valve is simple, convenient, using effect is good.
Utilize technological scheme described in the utility model, or those skilled in the art being under the inspiration of technical solutions of the utility model, designs similar technological scheme, and reaching above-mentioned technique effect, is all to fall into protection domain of the present utility model.
Claims (4)
1. a detachable flange butterfly, comprise valve body, rubber valve seat, valve plate and valve shaft, it is characterized in that: described rubber valve seat is linked in described valve body, detachable connection between described valve body and described rubber valve seat, the inner chamber of described valve body and described rubber valve seat cooperation place are provided with boss, the described rubber valve seat at corresponding described valve body lug boss position place is provided with the groove mating with described boss, described recess-mounted is on described boss, the flange end of described valve body is provided with groove, corresponding described rubber valve seat is provided with the extension fastening with described valve body groove place.
2. the detachable flange butterfly of one as claimed in claim 1, is characterized in that: the axis hole position of described rubber valve seat is provided with sealing O type circle.
3. the detachable flange butterfly of one as claimed in claim 1, is characterized in that: axis hole that described valve plate is connected with described valve shaft adopt valve shaft side of axis hole side without pin mechanism, corresponding described valve shaft adopts bearing band side.
4. the detachable flange butterfly of one as claimed in claim 1, it is characterized in that: described valve shaft forms by three sections, the outer surface of first paragraph is circular, the outer surface of second segment is polygonal, the outer surface of the 3rd section is circular, and the circular diameter of the 3rd section of outer surface is less than first paragraph outer surface diameter of a circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320894201.1U CN203743449U (en) | 2013-12-30 | 2013-12-30 | Demountable flange butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320894201.1U CN203743449U (en) | 2013-12-30 | 2013-12-30 | Demountable flange butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743449U true CN203743449U (en) | 2014-07-30 |
Family
ID=51343250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320894201.1U Expired - Fee Related CN203743449U (en) | 2013-12-30 | 2013-12-30 | Demountable flange butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743449U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412297A (en) * | 2020-03-26 | 2020-07-14 | 福建省广龙消防阀门有限公司 | Novel fire control butterfly valve of passageway disconnect-type |
-
2013
- 2013-12-30 CN CN201320894201.1U patent/CN203743449U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412297A (en) * | 2020-03-26 | 2020-07-14 | 福建省广龙消防阀门有限公司 | Novel fire control butterfly valve of passageway disconnect-type |
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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 |
Granted publication date: 20140730 Termination date: 20151230 |
|
| EXPY | Termination of patent right or utility model |