CN204201061U - A kind of valve sealing structure - Google Patents
A kind of valve sealing structure Download PDFInfo
- Publication number
- CN204201061U CN204201061U CN201420680514.1U CN201420680514U CN204201061U CN 204201061 U CN204201061 U CN 204201061U CN 201420680514 U CN201420680514 U CN 201420680514U CN 204201061 U CN204201061 U CN 204201061U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- groove
- sealing gasket
- boss
- blind flange
- 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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Abstract
The utility model relates to a kind of valve sealing structure, comprise upper cylinder body, lower cylinder body, described upper cylinder body and lower cylinder body form cylinder body jointly, in cylinder body, be provided with piston rod, the lower end of described cylinder body is provided with blind flange, is provided with connecting plate in the below of blind flange, the lower end surface of described blind flange is provided with the boss of outwardly convex, offer groove downwards in the upper-end surface of connecting plate, described boss is installed in a groove, in groove, be also provided with sealing gasket; Between described blind flange and connecting plate, seal ring is installed; Fit in the lower end surface of described sealing gasket and the bottom surface of groove, upper-end surface and the boss lower surface of sealing gasket are fitted.By adopting convex groove type sealing configuration, boss and recess merge be provided with sealing gasket in grooves, because sealing surface is narrower, compression area is little, and because being subject to the stop of groove surface, sealing gasket can not extrude seal face, the tendency of washing away by medium and corrode is few, also be easy to centering during installation, sealing gasket uniform force, sealability is reliable.
Description
Technical field
The utility model relates to technical field of sealing technology, particularly relates to a kind of valve sealing structure.
Background technique
Sealing is anti-fluid or solid particle from revealing between adjacent junction plane and preventing introduced contaminants as the component of the intrusion such as dust and moisture machinery equipment inside or measure.The leakage of equipment is very important quality problems, leakage of oil, leak, the normal operation of the equipment that has a strong impact on that leaks gas, outward appearance, working efficiency and working life, and can environmental pollution be caused, waste energy.Cause the reason of leakage to mainly contain two aspects: one is the result due to machining, the surface of engineering goods certainly exists various defect and shape and size deviation, therefore, inevitably produces gap in mechanical parts connection place; Two is that sealing both sides exist pressure difference, and working medium will be revealed by gap.Sealing can be divided into the large class of the motive sealing two between the static seal between geo-stationary junction plane and relative movement junction plane.Static seal mainly contains dot encapsulation, and glue sealing seals three major types with contacting.According to working pressure, static seal is by being divided into mesolow static seal and high pressure static seal.It is softer that material commonly used by mesolow static seal, the pad sealing that pad is wider, and high pressure static seal is then comparatively hard with material, the metallic shim that contact width is very narrow.Motive sealing can be divided into rotary seal and reciprocation sealing two kinds of fundamental types.Whether contact with the component of its effect relative movement by Sealing, contact seal and noncontact seal can be divided into.In general, the good airproof performance of contact seal, but limit by fretting wear, be applicable to the occasion that sealing surface linear velocity is lower.The sealing of noncontact seal is poor, is applicable to the occasion of fair speed.
Current flange install air cylinder structure due to the cast structure of cylinder front and rear cover are all spoke shpae, the weight of end cap can be alleviated while ensureing end cap intensity, but need for some the occasion that seals working medium, its sealing comparatively difficulty, sealing effect is poor simultaneously.
Model utility content
The utility model, in order to overcome deficiency of the prior art, provides a kind of valve sealing structure, improves its sealability, prevents from revealing.
The utility model is achieved through the following technical solutions:
A kind of valve sealing structure, comprise upper cylinder body, lower cylinder body, described upper cylinder body and lower cylinder body form cylinder body jointly, in cylinder body, be provided with piston rod, the lower end of described cylinder body is provided with blind flange, is provided with connecting plate in the below of blind flange, the lower end surface of described blind flange is provided with the boss of outwardly convex, offer groove downwards in the upper-end surface of connecting plate, described boss is installed in a groove, in groove, be also provided with sealing gasket; Between described blind flange and connecting plate, seal ring is installed.
As optimal technical scheme of the present utility model, fit in the lower end surface of described sealing gasket and the bottom surface of groove, and upper-end surface and the boss lower surface of sealing gasket are fitted.
As optimal technical scheme of the present utility model, the side contact of described seal ring is on the side of boss.
As optimal technical scheme of the present utility model, described sealing gasket and seal ring all adopt polyurethane material to make.
As optimal technical scheme of the present utility model, installed by bolt between described blind flange and connecting plate.
Compared with prior art, the beneficial effects of the utility model are: by adopting convex groove type sealing configuration, boss and recess merge be provided with sealing gasket in grooves, because sealing surface is narrower, compress area little, and because being subject to the stop of groove surface, sealing gasket can not extrude seal face, wash away by medium and the tendency of corroding few, be also easy to centering during installation, sealing gasket uniform force, sealability is reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-upper cylinder body; 2-lower cylinder body; 3-piston rod; 4-blind flange; 5-connecting plate; 6-boss; 7-groove; 8-sealing gasket; 9-seal ring; 10-bolt.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 1 is structural representation of the present utility model.
Described a kind of valve sealing structure, comprise upper cylinder body 1, lower cylinder body 2, described upper cylinder body 1 and lower cylinder body 2 form cylinder body jointly, in cylinder body, be provided with piston rod 3, the lower end of described cylinder body is provided with blind flange 4, is provided with connecting plate 5 in the below of blind flange 4, the lower end surface of described blind flange 4 is provided with the boss 6 of outwardly convex, offer groove 7 downwards in the upper-end surface of connecting plate 5, described boss 6 is arranged in groove 7, in groove 7, be also provided with sealing gasket 8; Between described blind flange 4 and connecting plate 5, seal ring 9 is installed, is installed by bolt 10 between described blind flange 4 and connecting plate 5.By adopting convex groove type sealing configuration, boss and recess merge be provided with sealing gasket in grooves, because sealing surface is narrower, compression area is little, and because being subject to the stop of groove surface, sealing gasket can not extrude seal face, the tendency of washing away by medium and corrode is few, also be easy to centering during installation, sealing gasket uniform force, sealability is reliable.
Fit in the lower end surface of described sealing gasket 8 and the bottom surface of groove 7, upper-end surface and boss 6 lower surface of sealing gasket 8 are fitted, and the side contact of described seal ring 9 is on the side of boss 6, and described sealing gasket 8 and seal ring 9 all adopt polyurethane material to make.By being provided with seal ring 9, the gap between blind flange and connecting plate 5 mating face can be sealed, isolation or cut-out leakage, increase the resistance in leakage, can produce higher gasket stress simultaneously.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a valve sealing structure, comprise upper cylinder body (1), lower cylinder body (2), described upper cylinder body (1) and lower cylinder body (2) form cylinder body jointly, piston rod (3) is installed in cylinder body, the lower end of described cylinder body is provided with blind flange (4), in the below of blind flange (4), connecting plate (5) is installed, it is characterized in that: the boss (6) lower end surface of described blind flange (4) being provided with outwardly convex, groove (7) is offered downwards in the upper-end surface of connecting plate (5), described boss (6) is arranged in groove (7), sealing gasket (8) is also installed in groove (7), seal ring (9) is installed between described blind flange (4) and connecting plate (5).
2. a kind of valve sealing structure according to claim 1, is characterized in that: fit in the lower end surface of described sealing gasket (8) and the bottom surface of groove (7), and upper-end surface and boss (6) lower surface of sealing gasket (8) are fitted.
3. a kind of valve sealing structure according to claim 1 and 2, is characterized in that: the side contact of described seal ring (9) is on the side of boss (6).
4. a kind of valve sealing structure according to claim 1, is characterized in that: described sealing gasket (8) and seal ring (9) all adopt polyurethane material to make.
5. a kind of valve sealing structure according to claim 1, is characterized in that: installed by bolt (10) between described blind flange (4) and connecting plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420680514.1U CN204201061U (en) | 2014-11-14 | 2014-11-14 | A kind of valve sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420680514.1U CN204201061U (en) | 2014-11-14 | 2014-11-14 | A kind of valve sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204201061U true CN204201061U (en) | 2015-03-11 |
Family
ID=52659025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420680514.1U Expired - Fee Related CN204201061U (en) | 2014-11-14 | 2014-11-14 | A kind of valve sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204201061U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542646A (en) * | 2015-12-23 | 2016-05-04 | 厦门市万旗科技股份有限公司 | A composite material modified with nanometer calcium carbonate and used for valve sealing and a preparing method thereof |
| CN106594284A (en) * | 2016-12-19 | 2017-04-26 | 北京云汉通航科技有限公司 | Sealing waterproof structure and ship-borne stable platform |
| CN110174023A (en) * | 2019-05-28 | 2019-08-27 | 江苏龙净节能科技有限公司 | For the flange sealing structure in heat-exchanger rig header |
-
2014
- 2014-11-14 CN CN201420680514.1U patent/CN204201061U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542646A (en) * | 2015-12-23 | 2016-05-04 | 厦门市万旗科技股份有限公司 | A composite material modified with nanometer calcium carbonate and used for valve sealing and a preparing method thereof |
| CN106594284A (en) * | 2016-12-19 | 2017-04-26 | 北京云汉通航科技有限公司 | Sealing waterproof structure and ship-borne stable platform |
| CN110174023A (en) * | 2019-05-28 | 2019-08-27 | 江苏龙净节能科技有限公司 | For the flange sealing structure in heat-exchanger rig header |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20151114 |
|
| EXPY | Termination of patent right or utility model |