CN105202184A - Valve sealing ring - Google Patents
Valve sealing ring Download PDFInfo
- Publication number
- CN105202184A CN105202184A CN201510672781.3A CN201510672781A CN105202184A CN 105202184 A CN105202184 A CN 105202184A CN 201510672781 A CN201510672781 A CN 201510672781A CN 105202184 A CN105202184 A CN 105202184A
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- ring body
- seal ring
- valve seat
- internal layer
- 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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- Gasket Seals (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a valve sealing ring. The valve sealing ring comprises a sealing ring body, wherein the sealing ring body is in a circular ring structure and the section of the sealing ring body is rectangular; the sealing ring body comprises an inner layer and an outer layer; the inner layer is a silica gel circular ring and the section of the inner layer is rectangular; the outer layer covers the upper and lower surfaces of the inner layer; and the outer layer is made of flexible graphite. With the adoption of the manner, the valve sealing ring has a simple and novel structure; the flexible graphite and silica gel are combined, and the plasticity of the silica gel and the flexible graphite is strong, so that the sealing performance of the sealing ring can be effectively enhanced; and the sealing ring not only can bear serious thermal expansion, but also has excellent oxidization resistance and corrosion resistance, has strong practicability, and has certain economic benefits and market prospect.
Description
Technical field
The present invention relates to mechanical parts field, particularly relate to a kind of valve seat rings.
Background technique
Valve is widely used in various pipe-line system, and the sealing problem of wherein high-temperature high pressure valve, it is the most important thing in production process always, once there is leakage accident in pipeline, not only economic loss can be caused, also seriously may injure personal safety, for prior art, the sealing of High temperature valve usually uses graphite-seal ring.
But, graphite-seal ring mostly in the market is single graphite and makes, or metal material and graphite are composited, metal material poor plasticity, once be subject to the effect of high-pressure medium, deformation occurs, and also can there is qualitative change in graphite material under long-term pressure, cause the sealing reliability of high pressure valve and Security not high, and cause the working life of this kind of seal ring short.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of valve seat rings, effectively can strengthen the sealing of seal ring.
For solving the problems of the technologies described above, the technological scheme that the present invention adopts is: provide a kind of valve seat rings, it is characterized in that, comprising: seal ring body, described seal ring body is circle structure, its cross section is rectangle, described seal ring body comprises internal layer and skin, and described internal layer is a silica gel annulus, and its cross section is rectangle, described external sheath is in the upper and lower surface of described internal layer, and described skin adopts Expanded graphite to make.
In a preferred embodiment of the present invention, between described internal layer and skin, be made into integrative-structure by gluing.
In a preferred embodiment of the present invention, described skin is coated with the compounding substances comprising mullite, silicon and boron carbide by dry heat process.
In a preferred embodiment of the present invention, described compounding substances comprises the mullite of 20%-70%, the silicon of 5%-14% and the boron carbide of 5%-70%.
In a preferred embodiment of the present invention, the specifications and models of described seal ring body can carry out customization processing as required.
The invention has the beneficial effects as follows: structure of the present invention is simple, novel, the united application of Expanded graphite and silica gel, silica gel and graphite plasticity strong, effectively can strengthen the sealing of seal ring, sealing ring can not only bear serious thermal expansion, and anti-oxidant, decay resistance is superior, practical, has certain economic benefit and market prospects.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of a kind of valve seat rings one of the present invention preferred embodiment;
In accompanying drawing, the mark of each parts is as follows: 1-seal ring body, 2-internal layer, 3-are outer.
Embodiment
Be clearly and completely described to the technological scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the embodiment of the present invention comprises:
A kind of valve seat rings, it is characterized in that, comprise: seal ring body 1, described seal ring body 1 is circle structure, and its cross section is rectangle, and described seal ring body 1 comprises internal layer 2 and outer 3, described internal layer 2 is a silica gel annulus, its cross section is rectangle, and described skin 3 is coated on the upper and lower surface of described internal layer 2, and described skin 3 adopts Expanded graphite to make.
Be different from prior art.
In another embodiment, integrative-structure is made into by gluing between described internal layer 2 and outer 3.
In another embodiment, described skin 3 is coated with the compounding substances comprising mullite, silicon and boron carbide by dry heat process, Expanded graphite not only has outside the characteristic such as chemical stability, anti-erosion of native graphite, also having special flexibility and elasticity, is a kind of desirable sealing material.
In another embodiment, described compounding substances comprises the mullite of 20%-70%, the silicon of 5%-14% and the boron carbide of 5%-70%, effectively can strengthen the sealing of seal ring, can bear serious heat expansion.
In another embodiment, the specifications and models of described seal ring body 1 can carry out customization processing as required.
Structure of the present invention is simple, novel, the united application of Expanded graphite and silica gel, silica gel and graphite plasticity strong, effectively can strengthen the sealing of seal ring, sealing ring can not only bear serious thermal expansion, and anti-oxidant, decay resistance is superior, practical, has certain economic benefit and market prospects.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a valve seat rings, it is characterized in that, comprise: seal ring body, described seal ring body is circle structure, and its cross section is rectangle, and described seal ring body comprises internal layer and skin, described internal layer is a silica gel annulus, its cross section is rectangle, and described external sheath is in the upper and lower surface of described internal layer, and described skin adopts Expanded graphite to make.
2. valve seat rings according to claim 1, is characterized in that, is made into integrative-structure between described internal layer and skin by gluing.
3. valve seat rings according to claim 1, is characterized in that, described skin is coated with the compounding substances comprising mullite, silicon and boron carbide by dry heat process.
4. valve seat rings according to claim 3, is characterized in that, described compounding substances comprises the mullite of 20%-70%, the silicon of 5%-14% and the boron carbide of 5%-70%.
5. valve seat rings according to claim 1, is characterized in that, the specifications and models of described seal ring body can carry out customization processing as required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510672781.3A CN105202184A (en) | 2015-10-19 | 2015-10-19 | Valve sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510672781.3A CN105202184A (en) | 2015-10-19 | 2015-10-19 | Valve sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105202184A true CN105202184A (en) | 2015-12-30 |
Family
ID=54950028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510672781.3A Pending CN105202184A (en) | 2015-10-19 | 2015-10-19 | Valve sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105202184A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3540746A (en) * | 1968-04-18 | 1970-11-17 | Air Prod & Chem | Combined split and segmental piston rings |
| US4559270A (en) * | 1983-07-28 | 1985-12-17 | Union Carbide Corporation | Oxidation prohibitive coatings for carbonaceous articles |
| JPH0798064A (en) * | 1993-07-23 | 1995-04-11 | Toa Valve Kk | O-ring for sealing and manufacture thereof |
| CN2243577Y (en) * | 1995-08-11 | 1996-12-25 | 新疆农垦科学院新型密封材料厂 | Sealing ring |
| CN1940356A (en) * | 2005-09-29 | 2007-04-04 | 霓佳斯株式会社 | Sheet-like gasket and process for manufacturing same |
| CN201434070Y (en) * | 2009-04-20 | 2010-03-31 | 宁波信幸隆密封制品有限公司 | Graphite composite sealing gasket |
| CN205331414U (en) * | 2015-10-19 | 2016-06-22 | 无锡市永亿精密铸造有限公司 | Valve seal ring |
-
2015
- 2015-10-19 CN CN201510672781.3A patent/CN105202184A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3540746A (en) * | 1968-04-18 | 1970-11-17 | Air Prod & Chem | Combined split and segmental piston rings |
| US4559270A (en) * | 1983-07-28 | 1985-12-17 | Union Carbide Corporation | Oxidation prohibitive coatings for carbonaceous articles |
| JPH0798064A (en) * | 1993-07-23 | 1995-04-11 | Toa Valve Kk | O-ring for sealing and manufacture thereof |
| CN2243577Y (en) * | 1995-08-11 | 1996-12-25 | 新疆农垦科学院新型密封材料厂 | Sealing ring |
| CN1940356A (en) * | 2005-09-29 | 2007-04-04 | 霓佳斯株式会社 | Sheet-like gasket and process for manufacturing same |
| CN201434070Y (en) * | 2009-04-20 | 2010-03-31 | 宁波信幸隆密封制品有限公司 | Graphite composite sealing gasket |
| CN205331414U (en) * | 2015-10-19 | 2016-06-22 | 无锡市永亿精密铸造有限公司 | Valve seal ring |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151230 |