CN204254012U - Valve tool sealing configuration - Google Patents
Valve tool sealing configuration Download PDFInfo
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- CN204254012U CN204254012U CN201420590123.0U CN201420590123U CN204254012U CN 204254012 U CN204254012 U CN 204254012U CN 201420590123 U CN201420590123 U CN 201420590123U CN 204254012 U CN204254012 U CN 204254012U
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Abstract
The utility model provides a kind of valve tool sealing configuration, comprise the valve body with a built-in cavity volume and the valve gap being sealedly attached to described valve body one end, the built-in cavity volume of described valve gap and described valve body forms the valve pocket closed, in described valve pocket, movable sealing is provided with piston and is socketed on the helical spring of this piston one end, be characterized in that one end of described piston is provided with an annular slot, the internal surface of described annular slot and described valve body forms a Sealing putting chamber, a flat sealed circle is provided with in described Sealing putting chamber, in it, outer side surface is sealing surface, the outer surface of piston that described sealing surface contacts with it and valve interior surface interference fit.This technological scheme wear resistance is strong, and contamination resistance is high, can improve seal durability and sealing effect.
Description
Technical field
The utility model relates to a kind of valve tool sealing configuration.
Background technique
Traditional valve tool sealing adopts "O"-ring more, " C " type circle, " Y " type circle etc. seals, but it is short for working life to there is seal ring in traditional Sealing, the problem of sealing difference, especially the motion seal carried out in motion, due to "O"-ring, " C " type circle, " Y " type circle etc. is all carry out linear sealing, sealing contact surface amasss little, fully can not ensure sealing effect, and the smoothness to valve tool and Sealing surface of contact, smoothness requirements is high, because lubricant oil dries up to form slag particle or be strayed into impurity, the linear sealing effect of Sealing and seal durability are had an impact in due to working procedure.
Model utility content
In view of this, it is strong that the utility model object is to provide a kind of wear resistance, and contamination resistance is high, can improve working life, a kind of valve tool sealing configuration of sealing effect.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of valve tool sealing configuration, comprise the valve body with a built-in cavity volume and the valve gap being sealedly attached to described valve body one end, the built-in cavity volume of described valve gap and described valve body forms the valve pocket closed, in described valve pocket, movable sealing is provided with piston and is socketed on the helical spring of this piston one end, one end of wherein said piston is provided with an annular slot, the internal surface of described annular slot and described valve body forms a Sealing putting chamber, a flat sealed circle is provided with in described Sealing putting chamber, in it, outer side surface is sealing surface, the outer surface of piston that described sealing surface contacts with it and valve interior surface interference fit.
Preferably, above-mentioned valve tool sealing configuration, wherein said piston is the extraordinary POM plastic piston of band selflubricating.
Preferably, above-mentioned valve tool sealing configuration, wherein said flat sealed circle is selflubricating flat sealed circle.
Preferably, above-mentioned valve tool sealing configuration, wherein said flat sealed circle thickness is 0.7mm, external diameter 17.9mm, internal diameter 12.9mm.
Preferably, above-mentioned valve tool sealing configuration, the outer surface of piston that wherein said flat sealed circle contacts with it and valve interior surface magnitude of interference are 0.05mm.
Preferably, above-mentioned valve tool sealing configuration, is provided with the gap of 0.05mm ~ 0.2mm between the internal surface of wherein said piston and described valve body.
Technique effect of the present utility model is mainly reflected in: in the utility model, Sealing adopts flat sealed circle, the linear sealing of traditional " O " RunddichtringO, " C " RunddichtringO, " Y " RunddichtringO is improved to face sealing, seal ring and valve tool contact surface scope are increased, and then the wear-resisting property of Sealing and contamination resistance are strengthened, extend the working life of Sealing, make sealing effect comparatively traditional wire good seal simultaneously, and because sealing effect improves, the piston action reaction velocity in valve tool is accelerated.
In addition, in the utility model, piston adopts the extraordinary POM plastic piston of band selflubricating, can reduce the friction of piston and valve pocket internal surface, and comparatively conventional piston is fast for the piston action reaction velocity making in valve tool.
Accompanying drawing explanation
Fig. 1: the utility model original state structural representation;
Fig. 2: the utility model motion state structural representation;
Fig. 3: piston structure schematic diagram in the utility model;
Fig. 4: flat sealed coil structures schematic diagram in the utility model.
In figure, the implication of each reference character is: 1-valve body, 2-valve gap, 3-piston, 4-helical spring, 5-flat sealed circle, 50-sealing surface, and 6-leads wear-resistant pad, 7-O type circle, 8-annular slot.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail, is easier to make technical solution of the present invention understand and grasp.
As shown in Fig. 1 ~ Fig. 2, a kind of valve tool sealing configuration, comprise the valve body 1 with a built-in cavity volume and be sealedly and fixedly connected in the valve gap 2 of valve body 1 one end by O type circle 7, valve gap 2 forms with the built-in cavity volume of valve body 1 valve pocket closed, in valve pocket, movable sealing is provided with piston 3 and is socketed on the helical spring 4 of piston 3 one end, helical spring 4 another end pushes against in guiding wear-resistant pad 6, wherein, as shown in Figure 3, one end of piston 3 is provided with an annular slot 8, annular slot 8 forms a Sealing putting chamber with the internal surface of valve body 1, a flat sealed circle 5 is provided with in Sealing putting chamber, as shown in Figure 4, in it, outer side surface is sealing surface 50, piston 3 outer surface that sealing surface 50 contacts with it and valve body 1 internal surface interference fit.
In addition, wherein piston 3 is preferably the extraordinary POM plastic piston of band selflubricating, can make with lubricator, and it self-lubricating property can reduce the friction of piston and valve pocket internal surface, and the activity reaction velocity of piston is accelerated.
The sealing surface 50 of above-mentioned flat sealed circle is close to the internal surface of valve body 1 and the outer surface of piston 3 always, and it directly decides sealing effect to the enclasping force of surface of contact.If sealing medium is the liquid of oils, the very thin liquid film of one deck can be formed between axle and seal ring, frictional force is diminished, can wear extent be reduced.But when sealing medium is gas, especially high-temperature dust gas, with the addition of abrasive material particles just as between surface of contact and sealing surface 50, accelerated wear test, is easy to cause seal failure, produce and leak.Often have in technology, change the friction factor of flat sealed circle sealing surface 50, usually add oiling agent in sealing material, though but can friction factor be reduced like this, but also reduce stretching strength and the elasticity of material simultaneously, increase deformation coefficient, the direct working life affecting seal ring, and after interpolation oiling agent, the internal surface of piston 3 surface and valve body 1 can leave oiling agent, cause certain environmental pollution, and easily stick the pollutants such as solid particle, the working life of utensil will be greatly reduced, resource utilization is caused to reduce, cause the wasting of resources.Thus, flat sealed circle 5 is preferably selflubricating flat sealed circle, it is equipped with as base rubber the molybdenum disulfide that weight portion is 0.3 ~ 5 part with hydrogenated butyronitrile, and weight portion is that the fluoroplastic SA of 0.5 ~ 10 part is successively through overmulling glue, refining glue, weigh, sulfuration, post-cure operation is made, particularly, selflubricating flat sealed circle, formed by the raw material components proportioning of following weight portion: hydrogenated nitrile-butadiene rubber 100 parts, rubber black N550 30 parts, N774 carbon black 15 parts, 30 parts, TP-95 plasticizing agent, antioxidant NBC 1.2 parts, fluoroplastic SA 1 part, magnesium oxide MgO 5 parts, zine oxide ZnO 5 parts, age resister ZMTI 0.5 part, crosslink agent DCP 2.5 parts, HVA-2 2 parts, sulphur 0.5 part, molybdenum disulfide 0.3 part.In use, the material property of flat sealed circle 5 does not reduce, and self-lubricating function is with by flat sealed circle 5 simultaneously, can reduce friction factor, thus extends the working life of flat sealed circle 5.Certainly, flat sealed circle 5 is not limited to selflubricating flat sealed circle, and its movable sealing adding oiling agent with the flat sealed circle of General Purpose Rubber material also can use, and it is all within the utility model protection domain.
Particularly, flat sealed circle 5 thickness is 0.7mm, external diameter 17.9mm, internal diameter 12.9mm.
The outer surface of piston that flat sealed circle 5 contacts with it and valve interior surface magnitude of interference are 0.05m.
The gap of 0.05mm ~ 0.2mm is provided with between the internal surface of piston 3 and valve body 1.
By describing above and can finding out, in the present invention, Sealing adopts flat sealed circle, sealing surface and valve tool contact surface scope increase, be face sealing by traditional "O"-ring, " C " type circle, " Y " type astragal seal en-hancement, the wear-resisting property of Sealing and contamination resistance are strengthened, extend the working life of Sealing, make sealing effect comparatively traditional wire good seal simultaneously, and because sealing effect improves, the piston action reaction velocity in valve tool is accelerated.
Certainly, the exemplary illustration of the above only typical apply of the present invention, by the combination of same or similar technical characteristics and replacement, can form multiple concrete scheme, these schemes all drop within protection scope of the present invention.
Claims (6)
1. a valve tool sealing configuration, comprise the valve body with a built-in cavity volume and the valve gap being sealedly attached to described valve body one end, the built-in cavity volume of described valve gap and described valve body forms the valve pocket closed, in described valve pocket, movable sealing is provided with piston and is socketed on the helical spring of this piston one end, it is characterized in that: one end of described piston is provided with an annular slot, the internal surface of described annular slot and described valve body forms a Sealing putting chamber, a flat sealed circle is provided with in described Sealing putting chamber, in it, outer side surface is sealing surface, the outer surface of piston that described sealing surface contacts with it and valve interior surface interference fit.
2. valve tool sealing configuration according to claim 1, is characterized in that: described piston is the extraordinary POM plastic piston of band selflubricating.
3. valve tool sealing configuration according to claim 1, is characterized in that: described flat sealed circle is selflubricating flat sealed circle.
4. valve tool sealing configuration according to claim 1, is characterized in that: described flat sealed circle thickness is 0.7mm, external diameter 17.9mm, internal diameter 12.9mm.
5. valve tool sealing configuration according to claim 1, is characterized in that: the outer surface of piston that described flat sealed circle contacts with it and valve interior surface magnitude of interference are 0.05mm.
6. valve tool sealing configuration according to claim 1, is characterized in that: the gap being provided with 0.05mm ~ 0.2mm between the internal surface of described piston and described valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420590123.0U CN204254012U (en) | 2014-10-08 | 2014-10-08 | Valve tool sealing configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420590123.0U CN204254012U (en) | 2014-10-08 | 2014-10-08 | Valve tool sealing configuration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204254012U true CN204254012U (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420590123.0U Active CN204254012U (en) | 2014-10-08 | 2014-10-08 | Valve tool sealing configuration |
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| Country | Link |
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| CN (1) | CN204254012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358921A (en) * | 2014-10-08 | 2015-02-18 | 宁波市鄞州枢融电子有限公司 | Valve sealing structure |
-
2014
- 2014-10-08 CN CN201420590123.0U patent/CN204254012U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358921A (en) * | 2014-10-08 | 2015-02-18 | 宁波市鄞州枢融电子有限公司 | Valve sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 3-132, Building 2, Pioneer Building, 66 Academician Road, Ningbo High-tech Zone, Zhejiang Province, 315000 Patentee after: Ningbo pivot Electronics Co., Ltd. Address before: 315000 Fishery Villages in Five Townships of Yinzhou District, Ningbo City, Zhejiang Province Patentee before: NINGBO YINZHOU SHURONG ELECTRONICS CO., LTD. |
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| CP03 | Change of name, title or address |