CN206754447U - A kind of floating ball valve seat structure of stretching structure - Google Patents
A kind of floating ball valve seat structure of stretching structure Download PDFInfo
- Publication number
- CN206754447U CN206754447U CN201720360514.7U CN201720360514U CN206754447U CN 206754447 U CN206754447 U CN 206754447U CN 201720360514 U CN201720360514 U CN 201720360514U CN 206754447 U CN206754447 U CN 206754447U
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- spheroid
- curved portions
- stretching
- sealing ring
- spherical structure
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Abstract
The utility model proposes a kind of floating ball valve seat structure of stretching structure, including valve body, valve rod, spheroid, the valve rod is connected with the spheroid, and the valve rod top is connected with handle；The valve body includes spherical structure and the inlet and outlet connected with the spherical structure, the import and the outlet are provided with O-ring seal with the spherical structure junction, the spheroid is located in the spherical structure, the O-ring seal is provided with curved portions, the curved portions are towards the spheroid, because sealing ring is provided with curved portions, when spheroid contacts with sealing ring, sealing ring plays the role of stretching to curved portions both sides, sealing ring is primarily subjected to stretching action in sealing, and the tensile strength of polytetrafluoroethylene (PTFE) or modified Teflon material is generally twice of compression strength, so bigger seal pressure can be born.
Description
Technical field
It the utility model is related to ball valve field, more particularly to the floating ball valve seat structure of stretching structure.
Background technology
Conventional floating ball valve, its valve seat construction are generally compression, i.e. spheroid is promoted in manual upstream medium and is pushed down into
In downstream seal circle, sealing ring is produced compression and form sealing.The general sealing ring material can select polytetrafluoroethylene (PTFE) or
Modified Teflon, its structure are common loop configuration, and the power between spheroid and sealing ring is pressed on sealing ring, and the material
Expect that compression strength is relatively low, so general floating ball valve only can be suitably used for the pressure environment within 5Mpa, and then cause making for valve seat
It is shorter with the life-span.
Utility model content
In order to solve the above technical problems, the utility model proposes a kind of floating ball valve seat structure of stretching structure, bag
Valve body, valve rod, spheroid are included, the valve rod is connected with the spheroid, and the valve rod top is connected with handle；The valve body includes ball
Shape structure and the inlet and outlet connected with the spherical structure, the import and the outlet and the spherical structure junction
Provided with O-ring seal, the spheroid is located in the spherical structure, and the O-ring seal is provided with curved portions, the arc
Portion is towards the spheroid.
Preferably, the curved portions are bonded with the spheroid.
Preferably, the O-ring seal is polytetrafluoroethylene (PTFE) or modified Teflon.
The utility model proposes the floating ball valve seat structure of stretching structure have following beneficial effect：Because sealing ring is set
Curved portions are equipped with, when spheroid contacts with sealing ring, sealing ring plays the role of stretching to curved portions both sides, and sealing ring is in sealing
Stretching action is primarily subjected to, and the tensile strength of polytetrafluoroethylene (PTFE) or modified Teflon material is generally the two of compression strength
Times, so bigger seal pressure can be born.Meanwhile distance can be such that spheroid contacts all the time between controlling two sealing rings,
Under vacuum or low-pressure state, effect can be also well sealed, and due to using the polytetrafluoroethylene (PTFE) with self-lubricating property
Material, its moment of torsion there will not be excessive growth.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation at the A in Fig. 1；
Wherein, 1- valve bodies, 2- O-ring seals, 3- spheroids, 4- imports, 5- outlets, 6- handles, 7- valve rods.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe.
As shown in Figure 1 and Figure 2, the utility model proposes a kind of floating ball valve seat structure of stretching structure, including valve body
1st, valve rod 7, spheroid 3, the valve rod 7 are connected with the spheroid 3, and the top of valve rod 7 is connected with handle 6；The valve body 1 includes
Spherical structure and the import 4 connected with the spherical structure and outlet 5, the import 4 and the outlet 5 and the spherical structure
Junction is provided with O-ring seal 2, and the spheroid 3 is located in the spherical structure, and the O-ring seal 2 is provided with arc
Portion, the curved portions are towards the spheroid 3, and teflin ring is arranged in valve body 1, when spheroid 3 touches polytetrafluoro
During ethene sealing ring, sealing ring produces stretching along the direction of spheroid 3, forms sealing.Meanwhile if control spheroid 3 and sealing ring it
Between distance it is contacted all the time, then can also obtain under vacuum or low-pressure state excellent sealing performance, because sealing ring is set
Curved portions are equipped with, when spheroid 3 contacts with sealing ring, sealing ring plays the role of stretching to curved portions both sides, and sealing ring is sealing
When be primarily subjected to stretching action, it is preferred that the O-ring seal 2 is polytetrafluoroethylene (PTFE) or modified Teflon, and poly- four
The tensile strength of PVF or modified Teflon material is generally twice of compression strength, so can bear bigger close
Seal pressure.
Preferably, the curved portions are bonded with the spheroid 3.
A variety of modifications to embodiment will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (2)
- A kind of 1. floating ball valve seat structure of stretching structure, it is characterised in that including valve body, valve rod, spheroid, the valve rod with The spheroid connection, the valve rod top is connected with handle；The valve body includes spherical structure and connected with the spherical structure Inlet and outlet, the import and it is described outlet with the spherical structure junction be provided with O-ring seal, the spheroid position In in the spherical structure, the O-ring seal is provided with curved portions, and the curved portions are close towards the spheroid, the annular Seal is polytetrafluoroethylene (PTFE) or modified Teflon.
- 2. the floating ball valve seat structure of stretching structure according to claim 1, it is characterised in that the curved portions and institute State spheroid fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720360514.7U CN206754447U (en) | 2017-04-07 | 2017-04-07 | A kind of floating ball valve seat structure of stretching structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720360514.7U CN206754447U (en) | 2017-04-07 | 2017-04-07 | A kind of floating ball valve seat structure of stretching structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206754447U true CN206754447U (en) | 2017-12-15 |
Family
ID=60613522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720360514.7U Active CN206754447U (en) | 2017-04-07 | 2017-04-07 | A kind of floating ball valve seat structure of stretching structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206754447U (en) |
-
2017
- 2017-04-07 CN CN201720360514.7U patent/CN206754447U/en active Active
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