CN201250917Y - Rubber-plastic composite joint washer for a ball valve - Google Patents
Rubber-plastic composite joint washer for a ball valve Download PDFInfo
- Publication number
- CN201250917Y CN201250917Y CNU2007200827518U CN200720082751U CN201250917Y CN 201250917 Y CN201250917 Y CN 201250917Y CN U2007200827518 U CNU2007200827518 U CN U2007200827518U CN 200720082751 U CN200720082751 U CN 200720082751U CN 201250917 Y CN201250917 Y CN 201250917Y
- Authority
- CN
- China
- Prior art keywords
- rubber
- ball valve
- joint washer
- contact surface
- polyfluortetraethylene
- 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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- Gasket Seals (AREA)
Abstract
The utility model relates to a rubber-plastic composite joint washer for a ball valve; a friction contact surface, which is contacted with the ball core, of the joint washer is made of polyfluortetraethylene material, and a bottom lining of the joint washer is made of the rubber material; an adhesion layer is arranged between the friction contact surface and the bottom lining of the joint washer. The joint washer for a ball valve adopts the combination of the rubber and the polyfluortetraethylene, so that not only the low friction, high-low-temperature resistance and corrosion resistance of the polyfluortetraethylene are maintained, but also the rubber can overcome the weakness of the polyfluortetraethylene that is lack of elasticity, thereby improving the sealing reliability and resolving the leakage of the ball valve. Integrating the properties of the two materials, the joint washer can realize the effect for maximizing favorable factors and minimizing unfavorable ones.
Description
Technical field
The utility model relates to a kind of ball valve sealing circle, the rubber and plastic compound seal packing ring in particularly a kind of ball valve sealing.
Background technique
The use of ball valve is used very extensive in technical fields such as mechanical industry, the energy, chemical industry, oil, rock gas, hot-water heating engineerings.The working life that had ball valve at that time now is often very short, and its meaning shows that ball valve uses in the near future, and gas, the liquid of sealing control will produce leakage.Because when ball valve uses, must tighten threaded joint, compress the polytetrafluoroethylene sealing gasket circle, it is contacted well with the steel ball core, could be up to purpose to sealing.Ball valve just can not produce leakage.
Owing to load, temperature, the variation of time, poly-tetrafluoro was denied that vinyl material produces distortion because of " cold flow " at that time, thereby polytetrafluoroethylene sealing gasket circle generation prestressing force relaxes and leaks.
Teflon has the characteristic of excellent low coefficient of friction, high temperature resistant, resistance to chemical attack.Therefore be widely used on the ball valve sealing of rub resistance.Thereby cold flow is yielding to lose seal action with following the string attenuation but polytetrafluoroethylmaterial material has again.
The model utility content
The purpose of this utility model is to provide to the public a kind of low friction, high-low temperature resistant, corrosion resistant characteristics of existing teflon, there is rubber can remedy the inelastic shortcoming of teflon again, thereby reaches the sealing effect of excellence and the ball valve sealing rubber and plastic compound seal packing ring of using effect.
The objective of the invention is so to realize: described rubber and plastic compound seal packing ring, be to do the frictional contact surface that seal washer contacts with the centre of sphere with polytetrafluoroethylmaterial material, do the seal washer rubber bushing with rubber material, between frictional contact surface and seal washer rubber bushing, adhesive layer is arranged.
Described frictional contact surface except that adopting the polytetrafluoroethylmaterial material making, can also be replaced with filled polytetrafluoroethylene or polybenzoate material and use.
Described adhesive layer is to realize that by sodium naphthalene binding liquid rubber and plastic is compound, and its method is: because teflon and other material all have the characteristic of " non-stick pan ", with rubber also be not sticking, as wanting both organically to be pasted together, must handle teflon, be smooth adhesive surface.The present invention adopts conventional naphthalene sodium complex liquid corrosion principle (sodium-naphthalene-tetrahydrofuran solution etch is the prior art in other field, and the present invention uses first), makes the F atom in the C-F key in the teflon play corrosive action.Make the slight carbonization in fluorine atom surface, make rubber and plastic form two keys, both sides' polarity is all bigger.Thereby reaching adhesive bonding method with general bonding carbon reaches rubber and plastic and bonds together securely.
Like this, adopted the compound ball valve sealing packing ring of rubber and teflon, organically be bonded into one between them, the low frictional properties of teflon, anti-high or low warm nature, corrosion resistance just can have both been kept, there is rubber can remedy the inelastic shortcoming of teflon again, thereby improves the reliability of sealing, the leakage that solves ball valve, the characteristic of comprehensive two kinds of materials can reach the effect of " maximizing favourable factors and minimizing unfavourable ones ".
It is also advantageous in that: because rubber and plastic compound seal washer-shaped and size, the same with the size of the polytetrafluoroethylene gasket of original virtually any size or rubber washer, this packing ring can be directly used in the packing ring that the maintain and replace distortion is scrapped, the sealing effect and the working life of having improved ball valve greatly.
Description of drawings
Fig. 1 is rubber and plastic compound seal washer-shaped figure.
Fig. 2 is Fig. 1 plan view.
Wherein: 1-seal washer end liner; The 2-frictional contact surface; The 3-adhesive layer.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
As shown in Figure 1, 2, described rubber and plastic compound seal packing ring is to do the frictional contact surface 2 that seal washer contacts with the centre of sphere with polytetrafluoroethylmaterial material, does seal washer end liner 1 with rubber material, between frictional contact surface 2 and seal washer end liner 1 adhesive layer 3 is arranged.
As shown in Figure 1, 2, described frictional contact surface 2 except that adopting the polytetrafluoroethylmaterial material making, can also be replaced with filled polytetrafluoroethylene or polybenzoate material and use.
As shown in Figure 1, 2, described adhesive layer 3, be to realize that by sodium naphthalene binding liquid rubber and plastic is compound, because teflon and other material all have the characteristic of " non-stick pan ", with rubber also be not sticking, as wanting both organically to be pasted together, must be processed into the adhesive surface that is not smooth to teflon.The present invention adopts conventional naphthalene sodium complex liquid corrosion principle (sodium-naphthalene-tetrahydrofuran solution etch is a prior art), makes the F atom in the C-F key in the teflon play corrosive action.Make the slight carbonization in fluorine atom surface, make rubber and plastic form two keys, both sides' polarity is all bigger.Thereby reaching adhesive bonding method with general bonding carbon reaches rubber and plastic and bonds together securely.
Claims (2)
1. ball valve rubber and plastic compound seal packing ring, it is characterized in that: do the frictional contact surface (2) that seal washer contacts with the centre of sphere with polytetrafluoroethylmaterial material, do seal washer end liner (1) with rubber material, between frictional contact surface (2) and seal washer end liner (1), adhesive layer (3) is arranged.
2. a kind of ball valve rubber and plastic compound seal packing ring according to claim 1 is characterized in that: described frictional contact surface (2), except that adopting the polytetrafluoroethylmaterial material making, can also be processed into surface of contact with filled polytetrafluoroethylene or polybenzoate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200827518U CN201250917Y (en) | 2007-12-27 | 2007-12-27 | Rubber-plastic composite joint washer for a ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200827518U CN201250917Y (en) | 2007-12-27 | 2007-12-27 | Rubber-plastic composite joint washer for a ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201250917Y true CN201250917Y (en) | 2009-06-03 |
Family
ID=40746590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200827518U Expired - Fee Related CN201250917Y (en) | 2007-12-27 | 2007-12-27 | Rubber-plastic composite joint washer for a ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201250917Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468824A (en) * | 2018-05-25 | 2018-08-31 | 温州大学苍南研究院 | IC card flow control low-power consumption ball valve |
| CN110081197A (en) * | 2019-03-27 | 2019-08-02 | 合肥为开科技有限公司 | A kind of ball valve sealing washer |
| CN110878830A (en) * | 2019-11-29 | 2020-03-13 | 深圳市山卓谐波传动科技有限公司 | Sealing structure and speed reducer |
-
2007
- 2007-12-27 CN CNU2007200827518U patent/CN201250917Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468824A (en) * | 2018-05-25 | 2018-08-31 | 温州大学苍南研究院 | IC card flow control low-power consumption ball valve |
| CN110081197A (en) * | 2019-03-27 | 2019-08-02 | 合肥为开科技有限公司 | A kind of ball valve sealing washer |
| CN110878830A (en) * | 2019-11-29 | 2020-03-13 | 深圳市山卓谐波传动科技有限公司 | Sealing structure and speed reducer |
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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: 20090603 Termination date: 20101227 |