CN101725731A - Self-exciting high-seal ball valve - Google Patents
Self-exciting high-seal ball valve Download PDFInfo
- Publication number
- CN101725731A CN101725731A CN200810169295A CN200810169295A CN101725731A CN 101725731 A CN101725731 A CN 101725731A CN 200810169295 A CN200810169295 A CN 200810169295A CN 200810169295 A CN200810169295 A CN 200810169295A CN 101725731 A CN101725731 A CN 101725731A
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- China
- Prior art keywords
- ball valve
- self
- expansion ring
- elastic expansion
- exciting
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Abstract
The invention relates to a self-exciting high-seal ball valve which is used for cutting off, distributing and changing the flow direction of the medium. An elastic expansion ring of the ball valve is made of metallic material with strong corrosion resistance and high elasticity; the design angle of the lip opening of the polytetrafluoroethylene lip seal seat is 30 degrees, the angle of the lip opening of the elastic expansion ring is 34 degrees, and the lip opening of the elastic expansion ring is outwardly embedded in the polytetrafluoroethylene lip seal seat, thereby enhancing the self-exciting deformability of the composite seal seat; and the composite seal seat adopts a double-beveling technique, thereby reducing the friction between the ball and the seal seat, reducing the operating moment and ensuring the sealing reliability. When in use, under the action of the internal pressure, the ball valve adjusts the precompression quantity in a self-exciting way, so that the composite seal seat is tightly connected with the ball, thereby realizing the high seal. When the ball valve is opened, the self-exciting tension of the elastic expansion ring can leave the ball, thereby enabling the medium to flow smoothly.
Description
Affiliated technical field: the present invention relates to a kind of control gear that can be used to cut off, distribute and change the media flow direction, especially it adopts the combined sealed seat that elastic expansion ring and teflon lip seal seat are formed, it can rely on the good elastoplasticity self excitation force of metallic material elastic expansion ring, strengthen its whole self-excitation deformability and compensation ability, the reliability and the working life of having improved ball valve sealing.
Background technique: the soft seal seat of floating current spherical ball valve generally is to take polytetrafluoroethylmaterial material, in use the ability of elastic-plastic deformation of teflon and the stability under the temperature variation condition are still not very good, and has bigger cold flow trend, simultaneously because the working pressure excursion of ball valve is bigger, still easily produce under the lower pressure condition or in long-term the use and reveal, result in hand cramps or safety problem to the user.
Summary of the invention: the soft seal seat polytetrafluoroethylmaterial material of existing floating ball valve, problems such as ability of elastic-plastic deformation and stability exist deficiency.The invention provides a kind of self-exciting high-seal ball valve, the combined sealed seat that adopts elastic expansion ring and teflon lip seal seat to form, combined sealed seat adopts double inclined plane technology, and elastic expansion ring adopts strong corrosion resistant and elastomeric metallic material.
Description of drawings: Fig. 1 is product structure figure.
Among the figure, 1, valve body 2, spheroid 3, combined sealed seat 4, valve rod 5, Gland.
Embodiment: the technical solution adopted for the present invention to solve the technical problems is: elastic expansion ring adopts strong corrosion resistant and elastomeric metallic material; The design angle of teflon lip seal seat lip is 30 °, and the angle of elastic expansion ring lip is 34 °, and the elastic expansion ring lip is embedded within the teflon lip seal seat outwardly, strengthens combined sealed seat self-excitation deformability; Combined sealed seat adopts double inclined plane technology, has reduced friction between spheroid and the sealing seat, has reduced operational torque, guarantees sealing reliability.During work, under the pressure effect within it, pre compressed magnitude is adjusted in self-excitation, and combined sealed seat is tightly linked to each other with spheroid, realizes high sealing, and elastic expansion ring self-excitation tension force can guarantee to leave spheroid when opening, and makes medium clear.
The invention has the beneficial effects as follows: be in operation and realize the self-excitation high sealing, zero reveals, simple in structure, increases the service life.
Claims (10)
1. a self-exciting high-seal ball valve is made up of valve body, spheroid, valve rod, Gland, elastic expansion ring, teflon lip seal seat etc.It is characterized in that: elastic expansion ring adopts strong corrosion resistant and elastomeric metallic material; The design angle of teflon lip seal seat lip is 30 °, and the angle of elastic expansion ring lip is 34 °, and the elastic expansion ring lip is embedded within the teflon lip seal seat outwardly, strengthens combined sealed seat self-excitation deformability; Combined sealed seat adopts double inclined plane technology, has reduced friction between spheroid and the sealing seat, has reduced operational torque, guarantees sealing reliability.During work, under the pressure effect within it, pre compressed magnitude is adjusted in self-excitation, and combined sealed seat is tightly linked to each other with spheroid, realizes high sealing, and elastic expansion ring self-excitation tension force can guarantee to leave spheroid when opening, and makes medium clear.
2. as claims 1 described self-exciting high-seal ball valve, it is characterized in that described valve channel mouth joint can constitute with flange-type.
3. as claims 1 described self-exciting high-seal ball valve, it is characterized in that described valve channel mouth joint can constitute with welding type.
4. as claims 1 described self-exciting high-seal ball valve, it is characterized in that described driving mode can select manual form for use.
5. as claims 1 described self-exciting high-seal ball valve, it is characterized in that described driving mode can select the worm and gear type of belt drive for use.
6. as claims 1 described self-exciting high-seal ball valve, it is characterized in that the optional powered version of using of described driving mode.
7. as claims 1 described self-exciting high-seal ball valve, it is characterized in that described driving mode can select pneumatic form for use.
8. as claims 1 described self-exciting high-seal ball valve, it is characterized in that described driving mode can select gas-liquid linked form for use.
9. as claims 1 described self-exciting high-seal ball valve, it is characterized in that described driving mode can select the form of surging for use.
10. as claims 1 described self-exciting high-seal ball valve, it is characterized in that described spheroid supporting way is the floating ball ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810169295A CN101725731A (en) | 2008-10-12 | 2008-10-12 | Self-exciting high-seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810169295A CN101725731A (en) | 2008-10-12 | 2008-10-12 | Self-exciting high-seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101725731A true CN101725731A (en) | 2010-06-09 |
Family
ID=42447087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810169295A Pending CN101725731A (en) | 2008-10-12 | 2008-10-12 | Self-exciting high-seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101725731A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734484A (en) * | 2011-03-31 | 2012-10-17 | 上海耐莱斯·詹姆斯伯雷阀门有限公司 | Lifting rod-type ball valve |
-
2008
- 2008-10-12 CN CN200810169295A patent/CN101725731A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734484A (en) * | 2011-03-31 | 2012-10-17 | 上海耐莱斯·詹姆斯伯雷阀门有限公司 | Lifting rod-type ball valve |
| CN102734484B (en) * | 2011-03-31 | 2013-07-17 | 上海耐莱斯·詹姆斯伯雷阀门有限公司 | Lifting rod-type ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100609 |