CN207131883U - Butterfly valve - Google Patents
Butterfly valve Download PDFInfo
- Publication number
- CN207131883U CN207131883U CN201720730291.9U CN201720730291U CN207131883U CN 207131883 U CN207131883 U CN 207131883U CN 201720730291 U CN201720730291 U CN 201720730291U CN 207131883 U CN207131883 U CN 207131883U
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- Prior art keywords
- valve
- sealing
- valve body
- sealing ring
- runner
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Abstract
It the utility model is related to a kind of butterfly valve, including valve body (1) and valve plate (2), the valve plate (2) is installed in rotation in the runner of valve body (1) by valve rod (3), the sealing ring (5) for being engaged with the sealing surface of valve plate (2) and forming sealing pair is provided with the runner of the valve body (1), it is characterised in that：The sealing ring (5) has two, and is symmetrically disposed in the both sides of valve rod (3), and the sealing ring (5) is made up of polytetrafluoroethylene (PTFE).The utility model has the advantages that：Not only good airproof performance, and service life is grown.
Description
Technical field
A kind of valve is the utility model is related to, specifically a kind of butterfly valve.
Background technology
Butterfly valve is called flap valve, is widely used in the industries such as petrochemical industry, medicine, metallurgy.The opening and closing element of butterfly valve is one
Discoidal valve plate, in valve body around its own axis rotate, so as to reach open and close or regulation purpose, therefore, valve body with
Sealing property between valve plate is to weigh the important indicator of butterfly valve quality.Sealing in use not only be present in existing butterfly valve
Property is poor, the problem of leakage phenomenon easily occurs, but also rapid wear between sealing ring and valve plate be present, and life of valve is short
Problem.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of not only good airproof performance, and the butterfly of service life length
Valve.
In order to solve the above technical problems, the utility model provides a kind of butterfly valve of following structure：Including valve body and valve plate,
Valve plate is installed in rotation in the runner of valve body by valve rod, is provided with the runner of valve body and is engaged shape with the sealing surface of valve plate
Into the sealing ring of sealing pair, wherein, sealing ring has two, and is symmetrically disposed in the both sides of valve rod, and sealing ring is by polytetrafluoroethyl-ne
Alkene is made.
After said structure, compared with prior art, the utility model has advantages below：Because sealing ring has two
It is individual, and the both sides of valve rod are symmetrically disposed in, hence in so that two sealing rings form two sealing pairs with valve plate, so that this
Utility model butterfly valve has double-layer sealing structure, and then substantially increases the sealing property of the utility model butterfly valve；Again due to close
Seal is made up of polytetrafluoroethylene (PTFE), and has the advantages that coefficient of friction is small, wear-resisting, self-lubricating, therefore can greatly reduce sealing
Mutual abrasion between circle and valve plate, so as to substantially increase the service life of the utility model butterfly valve.
Butterfly valve described in the utility model, wherein, the sealing surface of valve plate is in circular arc, the cross section of the sealing surface of sealing ring
In scarf.
Said structure can make to be engaged the close of the sealing pair formed with the sealing surface of valve plate by sealing ring when valve is closed
Envelope is more more stable than pressing, so as to further increase the sealing property of the utility model butterfly valve.
Butterfly valve described in the utility model, wherein, the periphery wall of sealing ring is the small circular conical surface of an outer imperial palace, valve rod two
Be symmetrically provided with the valve flowing channel inwall of side a pair it is being engaged with circular conical surface and in outer imperial palace it is small circular conical surface shape installation
Portion, sealing ring are arranged in the runner of the valve body at circular conical surface shape installation portion place, and are pressed on circular conical surface shape by pressure ring and are pacified
At dress portion.
Said structure can make the cooperation between sealing ring and valve body more close, so as to greatly improve sealing ring and valve body
Between sealing property, and then improve the sealing property of the utility model butterfly valve.
Butterfly valve described in the utility model, wherein, it is connected through a screw thread between pressure ring and the runner inner wall of valve body.
Said structure causes the fixed form of sealing ring to become more convenient, so as to effectively be easy to the utility model butterfly
The I＆ M of valve.
Butterfly valve described in the utility model, wherein, it is provided with sealing gasket between the runner inner wall of valve body on the outside of pressure ring.
The setting of sealing gasket is not only able to further enhance the sealing property of the utility model butterfly valve, and can also play pressure
Press ring, prevent the situation that pressure ring rotates with respect to valve body in use and causes sealing ring to loosen from occurring.
Brief description of the drawings
Fig. 1 is sectional structure appearance schematic diagram when the utility model butterfly valve is closed；
Fig. 2 is sectional structure appearance schematic diagram when the utility model butterfly valve is opened.
Embodiment
The utility model butterfly valve is described in further detail with reference to the accompanying drawings and detailed description.
As depicted in figs. 1 and 2, the utility model butterfly valve includes valve body 1 and valve plate 2, valve plate 2 by valve rod 3 rotationally
In the runner of valve body 1, the one end of valve rod 3 is connected with tumbler 4, and in the present embodiment, valve rod 3 is two-part structure,
Its epimere is stem body, and its hypomere is a soket head cap screw being coaxially disposed with epimere, and it can also be axis knot certainly
Structure, tumbler 4 can be manual rotating device, or electric controlled rotating device, the connection knot between valve plate 2 and valve rod 3
Attachment structure between structure, valve rod 3 and valve body 1 and tumbler 4 is existing conventional techniques, therefore is not repeated herein；Valve body 1
The sealing ring 5 to form sealing pair is engaged with the sealing surface of valve plate 2 provided with two in runner, two sealing rings 5 are symmetrically arranged
In the both sides of valve rod 3, sealing ring 5 is made up of polytetrafluoroethylene (PTFE), and the sealing surface of valve plate 2 is in circular arc, the sealing surface of sealing ring 5
Cross section is in scarf, the internal diameter of the sealing ring 5 at sealing surface is gradually increased from outside to inside, the gradient of this sealing surface can control
In 0.2 °~0.5 °, preferably 0.3 °, this can make to be engaged with the sealing surface of valve plate 2 by sealing ring 5 and formed when valve is closed
Sealing pair seal pressure it is more stable, so as to further increase the sealing property of the utility model butterfly valve；Sealing ring 5
Periphery wall is the small circular conical surface 6 of an outer imperial palace, and a pair and circle are symmetrically provided with the runner inner wall of valve body 1 of the both sides of valve rod 3
The conical surface 6 is being engaged and can be controlled in 0.2 °~1 ° in the small circular conical surface shape installation portion 7 of outer imperial palace, the gradient of circular conical surface 6, preferably
For 0.5 °, so it is not only able to make the cooperation between sealing ring and valve body more close, so as to greatly improve sealing ring and valve body
Between sealing property, and then improve the sealing property of the utility model butterfly valve, but also the positioning of sealing ring 5 can be made more
To be accurate, so make sealing ring 5 be engaged with the sealing surface of valve plate 2 sealing pair to be formed seal pressure it is more stable, so as to
Further increase the sealing property of the utility model butterfly valve；Sealing ring 5 is arranged on the valve body at the place of circular conical surface shape installation portion 7
In 1 runner, and it is pressed on by pressure ring 8 at circular conical surface shape installation portion 7, passes through spiral shell between the runner inner wall of pressure ring 8 and valve body 1
Line is connected, and sealing gasket 9 is provided between the outside of pressure ring 8 and the runner inner wall of valve body 1.
Embodiment above is only that preferred embodiment of the present utility model is described, not to the utility model
Scope be defined, on the premise of the utility model design spirit is not departed from, those of ordinary skill in the art are to this practicality
The various modifications and improvement that new technical scheme is made, the protection domain of the utility model claims book determination all should be fallen into
It is interior.
Claims (5)
1. a kind of butterfly valve, including valve body (1) and valve plate (2), the valve plate (2) are installed in rotation on valve body by valve rod (3)
(1) sealing ring for being engaged with the sealing surface of valve plate (2) and forming sealing pair is provided with runner, in the runner of the valve body (1)
(5), it is characterised in that：The sealing ring (5) has two, and is symmetrically disposed in the both sides of valve rod (3), the sealing ring (5)
It is made up of polytetrafluoroethylene (PTFE).
2. butterfly valve according to claim 1, it is characterised in that：The sealing surface of the valve plate (2) is in circular arc, the sealing
The cross section for the sealing surface for enclosing (5) is in scarf.
3. butterfly valve according to claim 1, it is characterised in that：The periphery wall of the sealing ring (5) is that an outer imperial palace is small
Circular conical surface (6), a pair are symmetrically provided with valve body (1) runner inner wall of valve rod (3) both sides and is matched with circular conical surface (6)
Closing and in the small circular conical surface shape installation portion (7) of outer imperial palace, the sealing ring (5) is arranged on where circular conical surface shape installation portion (7)
In the runner of the valve body (1) at place, and circular conical surface shape installation portion (7) place is pressed on by pressure ring (8).
4. butterfly valve according to claim 3, it is characterised in that：Lead between the pressure ring (8) and the runner inner wall of valve body (1)
Cross threaded connection.
5. the butterfly valve according to claim 3 or 4, it is characterised in that：On the outside of the pressure ring (8) and in the runner of valve body (1)
Sealing gasket (9) is provided between wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720730291.9U CN207131883U (en) | 2017-06-22 | 2017-06-22 | Butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720730291.9U CN207131883U (en) | 2017-06-22 | 2017-06-22 | Butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207131883U true CN207131883U (en) | 2018-03-23 |
Family
ID=61631882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720730291.9U Active CN207131883U (en) | 2017-06-22 | 2017-06-22 | Butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207131883U (en) |
-
2017
- 2017-06-22 CN CN201720730291.9U patent/CN207131883U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |