CN201386805Y - Polytetrafluoroethylene seal butterfly valve - Google Patents
Polytetrafluoroethylene seal butterfly valve Download PDFInfo
- Publication number
- CN201386805Y CN201386805Y CN200920116042U CN200920116042U CN201386805Y CN 201386805 Y CN201386805 Y CN 201386805Y CN 200920116042 U CN200920116042 U CN 200920116042U CN 200920116042 U CN200920116042 U CN 200920116042U CN 201386805 Y CN201386805 Y CN 201386805Y
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- CN
- China
- Prior art keywords
- seal ring
- valve
- butterfly
- valve body
- seal
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a polytetrafluoroethylene seal butterfly valve, which comprises a valve body, a valve shaft, a butterfly plate, a seal ring and an end cover. One end of the valve shaft is arranged on the valve body and connected with the butterfly plate, the end cover is used for fixing the seal ring to the inside of the valve body, and the outer diameter of the butterfly plate is in sealing engagement with the inner diameter of the seal ring. The seal butterfly valve is characterized in that the seal ring is provided with an annular opening groove which is coaxial with the seal ring, multi-turn steel wires are wound on the bottom of the opening groove, and a steel ring with the outer diameter equal to that of the seal ring is disposed above the steel wires inside the opening groove. The polytetrafluoroethylene seal butterfly valve has the advantages that the polytetrafluoroethylene seal ring is provided with the opening groove, the multi-turn steel wires are wound on the bottom of the opening groove, and the elasticity of the seal ring is improved as the steel wires are wound on the seal ring. By utilizing the structure, the seal butterfly valve enables the seal ring to obtain enough resilience to realize sealing engagement with the seal surface of the butterfly plate when the butterfly plate is under a closing state.
Description
Technical field
The utility model relates to a kind of valve, relates to a kind of polytetrafluoroethylsealed sealed butterfly valve in particular, is mainly used in relevant industries such as petrochemical industry and pipe-line system.
Background technique
Butterfly valve is Flap valve again, is a kind of modulating valve simple in structure, and butterfly valve is meant that closure member is a disk, rotates a kind of valve that reaches open and close around valve shaft; Main rising cut off and throttling usefulness on pipe-line system; The butterfly valve open-shut device is by being a discoidal butterfly plate, and the axis around himself in valve body rotates, thereby reaches the purpose that opens and closes or regulate.
Existing polytetrafluoroethylsealed sealed butterfly valve includes valve body, valve shaft, butterfly plate, seal ring, end cap and operating device; Because existing seal ring is made for the polytetrafluoroethylene material, the resilience poor effect of its material causes the seal pressure of seal ring to be difficult to control; Big as pretightening force, then make the sealing surface easy deformation of seal ring and butterfly plate, thereby shorten its working life; Little as pretightening force, then do not reach the sealing effect of expection again, leakage phenomenon takes place easily.
Summary of the invention
In order to solve the elasticity deficiency of seal ring, improve technical problems such as its resilience, this reality is novel to provide a kind of polytetrafluoroethylsealed sealed butterfly valve, and it is simple in structure, and is reasonable in design, can effectively solve the control to the seal pressure of seal ring, improves the sealing effect of butterfly valve.
For solving above technical problem, the technological scheme that the utility model is taked is a kind of polytetrafluoroethylsealed sealed butterfly valve, it includes valve body, valve shaft, butterfly plate, seal ring, end cap, described valve shaft one end places valve body to be connected with butterfly plate, and described end cap is fixed in seal ring in the valve body, and described butterfly plate external diameter is sealed and matched mutually with internal diameter of the seal ring; It is characterized in that described seal ring is provided with an annular opening groove coaxial with seal ring, be wound with the multiturn steel wire in the bottom of this opening slot, in described opening slot steel wire above be provided with a steel ring, the external diameter of this steel ring equates with the external diameter of seal ring.
Further, described seal ring both sides and the valve body of being close to mutually with the seal ring both sides and the sidewall on the end cap are equipped with teeth groove, and described seal ring one side teeth groove is mutually meshing with the teeth groove on the valve body, and the opposite side teeth groove is mutually meshing with the teeth groove on the end cap sidewall.
The beneficial effects of the utility model are to be provided with an opening slot on polytetrafluoroethylsealed sealed circle, and are wound with the multiturn steel wire in the bottom of opening slot; Owing on seal ring, be wound with steel wire, can effectively improve the elasticity of seal ring, adopt this structure, when butterfly plate is in closed condition, makes seal ring have enough resiliences and be sealed and matched mutually with the butterfly plate sealing surface.
Description of drawings
Fig. 1 is the partial sectional view of the utility model polytetrafluoroethylsealed sealed butterfly valve
Fig. 2 is a P place enlarged view among Fig. 1
Specific embodiments
Below in conjunction with accompanying drawing the utility model mode of execution is described further:
Extremely shown in Figure 2 as Fig. 1, the technological scheme that the utility model is taked is a kind of polytetrafluoroethylsealed sealed butterfly valve, it includes valve body 1, valve shaft 2, butterfly plate 3, seal ring 4, end cap 5, described valve shaft 2 one ends place in the valve body and are connected with butterfly plate 3, and described end cap 5 is fixed in seal ring 4 in the valve body 1, and described butterfly plate 3 external diameters are sealed and matched mutually with seal ring 4 internal diameters; In order to solve the elasticity deficiency of seal ring 4, improve its resilience, on described seal ring 4, be provided with an annular opening groove 6 coaxial with seal ring 4, be wound with multiturn steel wire 7 in the bottom of this opening slot 6, in order to prevent that butterfly valve when mounted, the pretightening force of flange bolt causes the seal pressure between sealing pair to change, in described opening slot 6 steel wire 7 above be provided with a steel ring 8, the external diameter of this steel ring 8 equates with the external diameter of seal ring 4; Owing on seal ring 4, be wound with steel wire 7, can effectively improve the resilience of seal ring 7, adopt this structure, when butterfly plate 3 is in closed condition, makes seal ring 4 have enough resiliences and be sealed and matched mutually with butterfly plate 3 sealing surfaces.
In the present embodiment, for guaranteeing the installation fastness of seal ring 4, valve body of being close to mutually in described seal ring 4 both sides and with seal ring 4 both sides 1 and the sidewall on the end cap 5 are equipped with teeth groove 9, described seal ring 4 one side teeth groove 9 are mutually meshing with the teeth groove 9 on the valve body 1, and opposite side teeth groove 9 is mutually meshing with the teeth groove 9 on end cap 1 sidewall; By on the sidewall of seal ring 4 both sides and valve body 1 and end cap 5, teeth groove 9 being set, can effectively guarantee the installation fastness of seal ring 4; Certainly, the mode that strengthens the fastness of its installation has a variety of, might not adopt teeth groove 9 structures, such as adopt a kind of form of boss barb, can reach identical purpose equally, but owing to adopt the teeth groove mode, it is easy for installation and be easy to processing, therefore, the mode of execution of present embodiment is preferential mode of execution.
The foregoing description should not be considered as restriction of the present utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection domain of the present utility model.
Claims (2)
1. polytetrafluoroethylsealed sealed butterfly valve, it includes valve body, valve shaft, butterfly plate, seal ring, end cap, described valve shaft one end places valve body to be connected with butterfly plate, and described valve gap is fixed in seal ring in the valve body, and described butterfly plate external diameter is sealed and matched mutually with internal diameter of the seal ring; It is characterized in that described seal ring is provided with an annular opening groove coaxial with seal ring, be wound with the multiturn steel wire in the bottom of this opening slot, in described opening slot steel wire above be provided with a steel ring, the external diameter of this steel ring equates with the external diameter of seal ring.
2. a kind of polytetrafluoroethylsealed sealed butterfly valve according to claim 1, valve body that it is characterized in that described seal ring both sides and be close to mutually with the seal ring both sides and the sidewall on the end cap are equipped with teeth groove, described seal ring one side teeth groove is mutually meshing with the teeth groove on the valve body, and the opposite side teeth groove is mutually meshing with the teeth groove on the end cap sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920116042U CN201386805Y (en) | 2009-03-20 | 2009-03-20 | Polytetrafluoroethylene seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920116042U CN201386805Y (en) | 2009-03-20 | 2009-03-20 | Polytetrafluoroethylene seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201386805Y true CN201386805Y (en) | 2010-01-20 |
Family
ID=41579338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920116042U Expired - Fee Related CN201386805Y (en) | 2009-03-20 | 2009-03-20 | Polytetrafluoroethylene seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201386805Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022552A (en) * | 2010-12-03 | 2011-04-20 | 浙江石化阀门有限公司 | Bidirectional sealing frictionless butterfly valve |
| CN102606751A (en) * | 2011-05-18 | 2012-07-25 | 浙江欧尼特阀门有限公司 | Three-section bidirectionally-sealed high-pressure butterfly valve |
-
2009
- 2009-03-20 CN CN200920116042U patent/CN201386805Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022552A (en) * | 2010-12-03 | 2011-04-20 | 浙江石化阀门有限公司 | Bidirectional sealing frictionless butterfly valve |
| CN102022552B (en) * | 2010-12-03 | 2012-08-08 | 浙江石化阀门有限公司 | Bidirectional sealing frictionless butterfly valve |
| CN102606751A (en) * | 2011-05-18 | 2012-07-25 | 浙江欧尼特阀门有限公司 | Three-section bidirectionally-sealed high-pressure butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20110320 |