CN104358872A - O-shaped ring - Google Patents
O-shaped ring Download PDFInfo
- Publication number
- CN104358872A CN104358872A CN201410722572.0A CN201410722572A CN104358872A CN 104358872 A CN104358872 A CN 104358872A CN 201410722572 A CN201410722572 A CN 201410722572A CN 104358872 A CN104358872 A CN 104358872A
- Authority
- CN
- China
- Prior art keywords
- shape circle
- inner core
- elastic inner
- protective layer
- present
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/181—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings for plastic packings
Abstract
The invention provides an O-shaped ring, which comprises an elastic inner core and a protection layer, wherein the protection layer is arranged outside the elastic inner core, and the protection layer is made of tetrafluoroethylene plastics. The O-shaped ring provided by the invention is of a double-layer structure including the elastic inner core and the protection layer, through the elastic inner core, the characteristic of sealing performance of the traditional O-shaped ring is realized, and through the protection layer, excellent chemical characteristics are realized, so that the O-shaped ring provided by the invention can also be used in special environment in which various traditional O-shaped rings cannot be used.
Description
Technical field
The present invention relates to a kind of Sealing, particularly a kind of O shape circle.
Background technique
O shape circle is widely used in all trades and professions as a kind of conventional machinery part, is often applied to the dynamic seal (packing) between axle and hole, mainly plays the effect of liquidproof or Leakage Gas.The O shape circle overwhelming majority that prior art is produced is sealed by elastomeric body, and sealing force is mainly provided by natural resiliency.
In prior art, O shape circle general elastomeric body such as rubber seals, and the elasticity of the O shape circle be namely processed into by rubber material itself provides sealing force.But the simple O shape circle adopting quality of rubber materials to make can because external environment such as the change of pressure or the reason such as long wearing and tearing and material aging cause the elasticity of seal ring reduce or disappear, and then cause sealing to be deteriorated.
In addition, along with widely using of O shape circle, different applications is also different to the requirement of seal ring.Although its chemical property of O shape circle that quality of rubber materials is made is comparatively stable, under the environment that some are special, such as strong alkali environment, the O shape circle that quality of rubber materials is made still can be subject to chemical corrosion because using for a long time, causes sealability to reduce, and then causes leakage or the intrusion of liquefied gas.
Summary of the invention
The object of this invention is to provide a kind of O shape circle, to solve the problem that existing O shape circle easily causes sealability to reduce because of outside environmental elements.
The present invention proposes a kind of O shape circle, and comprising: elastic inner core and protective layer, described protective layer is arranged on the outside of described elastic inner core, and the material of described protective layer is ptfe plastic.
According to the O shape circle described in present pre-ferred embodiments, the material of described elastic inner core is silicone rubber or fluorine rubber.
According to the O shape circle described in present pre-ferred embodiments, the material of described protective layer is perfluoroethylene-propylene or poly-perfluoro alkoxy.
According to the O shape circle described in present pre-ferred embodiments, described protective layer is jointlessly coated on the outside of described elastic inner core.
Relative to prior art, the invention has the beneficial effects as follows:
O shape circle of the present invention has the double layer construction of elastic inner core and protective layer; the sealing feature of elastic inner core to have made it act on traditional O shape circle; the protective layer excellent chemical characteristics that more made it possess, thus O shape of the present invention also can be used to enclose under many traditional O shapes enclose the particular surroundings that cannot use.In addition, the protective layer of O shape of the present invention circle can be the outside being jointlessly coated on elastic inner core, thus effectively can stop liquid or gas infiltrates from seam crossing, improves the sealing of O shape circle, too increases the working life of O shape circle.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of O shape circle of the embodiment of the present invention;
Fig. 2 is the schematic cross-section of O shape circle in Fig. 1.
Embodiment
Aforementioned and other technology contents, Characteristic for the present invention, can clearly present in following cooperation describes in detail with reference to graphic preferred embodiment.By the explanation of embodiment, when can to the present invention for the technological means reaching predetermined object and take and effect be able to more deeply and concrete understanding, however institute's accompanying drawings be only to provide with reference to and the use of explanation, be not used for being limited the present invention.
Refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of O shape circle of the embodiment of the present invention, and Fig. 2 is the schematic cross-section of O shape circle in Fig. 1.This O shape circle comprises elastic inner core 2 and protective layer 3, and protective layer 3 is arranged on the outside of elastic inner core 2.
In the present embodiment, the material of elastic inner core 2 is silicone rubber or fluorine rubber.The material of protective layer 3 is ptfe plastic.
Silicone rubber (Silicone Rubber) has that high-low temperature resistant, chemical stability are high, the feature of compression resistant distortion.Fluorine rubber (Fluoro Rubber) has the advantages that compression resistant is out of shape, chemical stability is high, high temperature resistant, ageing-resistant.
Ptfe plastic has that flame retardancy, heat resistance, resistance to chemical reagents, solvent resistance, brittle temperature are extremely low, friction factor is low, the not feature such as viscosity.Wherein, the preferred perfluoroethylene-propylene of ptfe plastic (Fluorinated Ethylene Propylene, FEP) that adopts of protective layer 3 or poly-perfluoro alkoxy (Polyfluoroalkoxy, PFA).
Perfluoroethylene-propylene is that tetrafluoroethylene and hexafluoropropene copolymerization form.FEP is a kind of soft plastic, and its tensile strength, wear resistance, creep resistance, lower than many engineering plastics, have more excellent corrosion resistance.
Poly-perfluoro alkoxy is the copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether, and it has the high feature of remarkable chemical resistance, creep resistance and compression strength.
Visible; the double layer construction that mat encloses in the O shape of the present embodiment; the sealing feature of elastic inner core to have made it act on traditional O shape circle, the protective layer excellent chemical characteristics that more made it possess, thus O shape of the present invention also can be used to enclose under many traditional O shapes enclose the particular surroundings that cannot use.
In addition, mostly existing O shape circle is to be formed by connecting by the rubber material head and the tail of bar shaped, and seam crossing easily infiltrates gas or liquid, affects the sealing of O shape circle, and after long-time use, seam crossing easily disconnects, and affects the working life of O shape circle.And the protective layer 3 of the present embodiment is the outside being jointlessly coated on elastic inner core 2.Such as directly can use mold injection molding, first insert in corresponding mould by prefabricated elastic inner core 2, then in mould, inject protective layer 3 material therefor, machine finally by mould pressing.Like this, just can realize the jointless object of protective layer 3, effectively can stop liquid or gas infiltrates from seam crossing, improve the sealing of O shape circle, too increase the working life of O shape circle.
For further illustrating the activity beneficial of O shape of the present invention circle; a large amount of test has been done for commercially available common O shape circle and O shape of the present invention circle; wherein; common O shape circle is nitrile butadiene rubber material; O shape circle elastic inner core of the present invention adopts fluorine rubber; protective layer adopts ptfe plastic (FEP), and test data is as shown in table 1:
Table 1
Visible according to the test data of table 1, the special parameter of O shape circle of the present invention is more better than common O shape circle, adding the protective action of up-protective layer, O shape of the present invention is enclosed not only there is the compression resistant deformation characteristics that rubber o-ring possesses, also have specific to fluororesin heat-resisting, cold-resistant, oil resistant, wear-resisting, the characteristics such as resistance to chemical attack, space flight can be widely used in, automotive industry, chemical petrochemical industry, fine chemistry industry, medical industry, medical device, food industry, bioengineering, purified water, mechanical industry, the various of the fields such as sewage treatment move, static seal occasion.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical scheme, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical scheme content, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (4)
1. an O shape circle, it is characterized in that, comprising: elastic inner core and protective layer, described protective layer is arranged on the outside of described elastic inner core, and the material of described protective layer is ptfe plastic.
2. O shape circle as claimed in claim 1, it is characterized in that, the material of described elastic inner core is silicone rubber or fluorine rubber.
3. O shape circle as claimed in claim 1, it is characterized in that, the material of described protective layer is perfluoroethylene-propylene or poly-perfluoro alkoxy.
4. the O shape circle as described in any one of claim 1 ~ 3, it is characterized in that, described protective layer is jointlessly coated on the outside of described elastic inner core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410722572.0A CN104358872A (en) | 2014-12-03 | 2014-12-03 | O-shaped ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410722572.0A CN104358872A (en) | 2014-12-03 | 2014-12-03 | O-shaped ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104358872A true CN104358872A (en) | 2015-02-18 |
Family
ID=52526165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410722572.0A Pending CN104358872A (en) | 2014-12-03 | 2014-12-03 | O-shaped ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104358872A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277575A (en) * | 1997-10-27 | 2000-12-20 | 大金工业株式会社 | Perfluororubber laminate and process for prodcing the same |
| CN2516757Y (en) * | 2002-01-23 | 2002-10-16 | 上海亿冈五金密封材料有限公司 | Sealing ring |
| CN2699064Y (en) * | 2004-05-17 | 2005-05-11 | 汪建 | Tetrafluoroethlene coated rubber O-shaped ring |
| CN201027971Y (en) * | 2007-04-29 | 2008-02-27 | 邬国平 | High-elasticity four-fluorine rubber covered O shaped sealing ring |
| CN101230247A (en) * | 2006-12-28 | 2008-07-30 | 霓佳斯株式会社 | Rubber/resin composite seal material |
| CN101963227A (en) * | 2010-09-07 | 2011-02-02 | 吴江朗科化纤有限公司 | Sealing ring and processing method thereof |
-
2014
- 2014-12-03 CN CN201410722572.0A patent/CN104358872A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277575A (en) * | 1997-10-27 | 2000-12-20 | 大金工业株式会社 | Perfluororubber laminate and process for prodcing the same |
| CN2516757Y (en) * | 2002-01-23 | 2002-10-16 | 上海亿冈五金密封材料有限公司 | Sealing ring |
| CN2699064Y (en) * | 2004-05-17 | 2005-05-11 | 汪建 | Tetrafluoroethlene coated rubber O-shaped ring |
| CN101230247A (en) * | 2006-12-28 | 2008-07-30 | 霓佳斯株式会社 | Rubber/resin composite seal material |
| CN201027971Y (en) * | 2007-04-29 | 2008-02-27 | 邬国平 | High-elasticity four-fluorine rubber covered O shaped sealing ring |
| CN101963227A (en) * | 2010-09-07 | 2011-02-02 | 吴江朗科化纤有限公司 | Sealing ring and processing method thereof |
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Legal Events
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|---|---|---|---|
| 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 |
Application publication date: 20150218 |