CN203374808U - Piston seal device - Google Patents
Piston seal device Download PDFInfo
- Publication number
- CN203374808U CN203374808U CN201320347353.XU CN201320347353U CN203374808U CN 203374808 U CN203374808 U CN 203374808U CN 201320347353 U CN201320347353 U CN 201320347353U CN 203374808 U CN203374808 U CN 203374808U
- Authority
- CN
- China
- Prior art keywords
- ring
- piston
- seal ring
- baffle ring
- seal
- 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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- Sealing Devices (AREA)
Abstract
The utility model relates to a piston seal device. The piston seal device comprises a cylinder body and a piston, a check ring is arranged at the end of the piston to limit back and forth moving of the end of the piston in the cylinder body, a first baffle ring, a seal ring and a second baffle ring are sequentially arranged on the outer side of the check ring of the piston, the first baffle ring, the second baffle ring and the check ring are fixedly connected, the first baffle ring or the second baffle ring can push the seal ring when the piston moves back and forth, and thereby, the seal ring can move together with the piston. According to the piston seal device, during usage, when the piston moves back and forth in the cylinder body, the seal ring moves together with the piston under the action of the first baffle ring and the second baffle ring on two sides of the seal ring, the friction between the seal ring and the cylinder body is rolling friction, the frictional resistance is small, and the service life of the seal ring is prolonged; meanwhile, when the seal ring is damaged, the interaction force between the seal ring and the piston can be absent, and therefore, mounting requirements for the seal ring are reduced.
Description
Technical field
The utility model relates to a kind of piston sealing device, is specifically related to the piston sealing device of the not fragile and convenient displacement seal ring of a kind of seal ring.
Background technique
As described in Figure 1, the end of piston is provided with back-up ring to the described piston sealing device of prior art, and, at the outside of back-up ring suit seal ring, the inner side surface laminating of described seal ring and cylinder body, to play seal action.The piston sealing device of this mode is in the process of using, piston moves around in cylinder body, simultaneously the seal ring on it can and the inner side surface of cylinder body between produce sliding friction, surface friction drag is larger, its seal ring is easily because damaging for a long time, thus the sealing between reduction piston and cylinder body; Because seal ring is sleeved on back-up ring, by the interaction between back-up ring and seal ring, fix, this makes when changing seal ring simultaneously, is not easy assembling.
The model utility content
The utility model purpose is the piston sealing device that the not fragile and convenient displacement seal ring of a kind of seal ring is provided in order to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution adopted in the utility model is: a kind of piston sealing device, comprise cylinder body and piston, and the end of described piston is provided with back-up ring, with the end of limited piston, in cylinder body, moves around; Described piston is disposed with the first baffle ring, seal ring and the second baffle ring in the outside of back-up ring, between described the first baffle ring, the second baffle ring and back-up ring, be fixedly connected with; Described the first baffle ring or the second baffle ring can carry out impetus to seal ring when piston moves around, so that seal ring moves together with piston.
Further, described seal ring is made by elastic material, and fits with the inner side surface of cylinder body; Leave certain interval between described the first baffle ring, the second baffle ring and cylinder body.
Further, described the first baffle ring equates with the thickness between the second baffle ring.
Due to the utilization of technique scheme, the utility model compared with prior art has following advantages:
Piston sealing device described in the utility model is in the process of using, when piston moves around in cylinder body, seal ring is under the effect of the first baffle ring of its both sides and the second baffle ring, with piston, move together, and the friction between seal ring and cylinder body is rolling friction, surface friction drag is less, has extended the working life of seal ring; Work as used seal ring simultaneously and damage, owing between seal ring and piston, can there is no interaction force, so just reduced the installation requirement of seal ring.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solutions of the utility model are described further:
The sectional view that accompanying drawing 1 is the described piston sealing device of prior art;
The sectional view that accompanying drawing 2 is piston sealing device described in the utility model;
Wherein: 1, cylinder body; 2, piston; 3, back-up ring; 4, the first baffle ring; 5, seal ring; 6, the second baffle ring.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Accompanying drawing 2 is a kind of piston sealing device described in the utility model, comprises cylinder body 1 and piston 2, and the end of described piston 2 is provided with back-up ring 3, with the end of limited piston 2, in cylinder body 1, moves around; Described piston 2 is disposed with the first baffle ring 4, seal ring 5 and the second baffle ring 6 in the outside of back-up ring 3, between described the first baffle ring 4, the second baffle ring 6 and back-up ring 3, be fixedly connected with; Described the first baffle ring 4 or the second baffle ring 6 can carry out impetus to seal ring 5 when piston 2 moves around, so that seal ring 5 moves together with piston 2.
Wherein said seal ring 5 is made by elastic material, and fits with the inner side surface of cylinder body 1; Leave certain interval between described the first baffle ring 4, the second baffle ring 6 and cylinder body 1; Described the first baffle ring 4 equates with the thickness between the second baffle ring 6.
Piston sealing device described in the utility model is in the process of using, when piston 2 moves around in cylinder body 1, seal ring 5 is under the effect of the first baffle ring 4 of its both sides and the second baffle ring 6, with piston 2, move together, and the friction between seal ring 5 and cylinder body 1 is rolling friction, surface friction drag is less, has extended the working life of seal ring 5; Work as used seal ring 5 simultaneously and damage, owing between seal ring 5 and piston 2, can there is no interaction force, so just reduced the installation requirement of seal ring 5.
Be only below concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technological scheme of formation, within all dropping on the utility model rights protection scope.
Claims (3)
1. a piston sealing device, comprise cylinder body and piston, and the end of described piston is provided with back-up ring, with the end of limited piston, in cylinder body, moves around; It is characterized in that: described piston is disposed with the first baffle ring, seal ring and the second baffle ring in the outside of back-up ring, between described the first baffle ring, the second baffle ring and back-up ring, is fixedly connected with; Described the first baffle ring or the second baffle ring can carry out impetus to seal ring when piston moves around, so that seal ring moves together with piston.
2. piston sealing device according to claim 1, it is characterized in that: described seal ring is made by elastic material, and with the inner side surface laminating of cylinder body; Leave certain interval between described the first baffle ring, the second baffle ring and cylinder body.
3. piston sealing device according to claim 1, it is characterized in that: described the first baffle ring equates with the thickness between the second baffle ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320347353.XU CN203374808U (en) | 2013-06-18 | 2013-06-18 | Piston seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320347353.XU CN203374808U (en) | 2013-06-18 | 2013-06-18 | Piston seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374808U true CN203374808U (en) | 2014-01-01 |
Family
ID=49837337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320347353.XU Expired - Fee Related CN203374808U (en) | 2013-06-18 | 2013-06-18 | Piston seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322201A (en) * | 2013-06-18 | 2013-09-25 | 苏州市吴中区欣鑫开关配件厂 | Piston sealing device |
-
2013
- 2013-06-18 CN CN201320347353.XU patent/CN203374808U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322201A (en) * | 2013-06-18 | 2013-09-25 | 苏州市吴中区欣鑫开关配件厂 | Piston sealing device |
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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: 20140101 Termination date: 20150618 |
|
| EXPY | Termination of patent right or utility model |