CN203926211U - Oil resistant hermetic seal oil cylinder - Google Patents
Oil resistant hermetic seal oil cylinder Download PDFInfo
- Publication number
- CN203926211U CN203926211U CN201420299123.5U CN201420299123U CN203926211U CN 203926211 U CN203926211 U CN 203926211U CN 201420299123 U CN201420299123 U CN 201420299123U CN 203926211 U CN203926211 U CN 203926211U
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- China
- Prior art keywords
- piston
- piston rod
- seal
- gas
- piston assembly
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- 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 - Lifetime
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- 238000007789 sealing Methods 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Actuator (AREA)
- Sealing Devices (AREA)
Abstract
The utility model provides a kind of oil resistant hermetic seal oil cylinder, comprise cylinder body, piston rod, piston assembly, described piston assembly is arranged in cylinder body, described piston rod front end stretches in cylinder body and is connected with piston assembly, and piston assembly comprises hydraulic seal piston and the gas packed-piston that is all fixed in piston rod front end.Described hydraulic seal piston at least arranges two, and between two hydraulic seal pistons, is provided with gas seal piston.The both sides of described gas seal piston are provided with closure gasket groove, and y-shaped ring is installed in closure gasket groove.Described piston rod front end is offered the outer shroud platform that is used for fixing piston assembly, puts after piston assembly, fixing tight with piston rod nut in piston rod end.The utility model can be realized the sealing to liquid-working-medium by twice hydraulic seal piston, by gas seal piston, realize the sealing to gas working dielectric, thereby reach the object that can use liquid-working-medium, on-liquid working medium and hybrid working medium.
Description
Technical field
The utility model relates to oil cylinder, specifically a kind of oil resistant hermetic seal oil cylinder.
Background technique
Oil cylinder in the market adopts two seals piston structure more, and its working medium can only be liquid, if use other working medium just to there will be working medium internal leakage as gas etc., thereby occurs that stroke shortens or the phenomenon of underpressure.But in actual application, there will be due to working environment, oil cylinder is unavoidably used the situation of the specific (special) requirements such as on-liquid working medium or hybrid working medium, thereby affected the work of oil cylinder.For this reason, invent a kind of oil cylinder of on-liquid working medium or hybrid working medium that can use very necessary.
Summary of the invention
The purpose of this utility model is to provide a kind of oil resistant hermetic seal oil cylinder, can solve in oil cylinder working procedure and use on-liquid working medium or hybrid working medium to occur interior problem of leaking.
The purpose of this utility model can realize by following technical solution:
This oil resistant hermetic seal oil cylinder comprises cylinder body, piston rod, piston assembly, described piston assembly is arranged in cylinder body, described piston rod front end stretches in cylinder body and is connected with piston assembly, and piston assembly comprises hydraulic seal piston and the gas packed-piston that is all fixed in piston rod front end.
The purpose of this utility model also can realize by following technical solution:
Further, hydraulic seal piston at least arranges two described in this oil resistant hermetic seal oil cylinder, and between two hydraulic seal pistons, is provided with gas seal piston.
Further, the both sides of gas seal piston are provided with closure gasket groove described in this oil resistant hermetic seal oil cylinder, and y-shaped ring is installed in closure gasket groove.
Further, piston rod front end is offered the outer shroud platform that is used for fixing piston assembly described in this oil resistant hermetic seal oil cylinder, puts after piston assembly, fixing tight with piston rod nut in piston rod end.
Compared to prior art, the utlity model has following beneficial effect:
The utility model adopts said structure, can realize the sealing to liquid-working-medium by twice hydraulic seal piston, by gas seal piston, realize the sealing to gas working dielectric, thereby reach the object that can use liquid-working-medium, on-liquid working medium and hybrid working medium, expanded the application area of oil cylinder.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of oil resistant hermetic seal oil cylinder of the present utility model.
In figure: piston rod 1, cylinder body 2, rear hydraulic seal piston 3, gas seal piston 5, front hydraulic seal piston 6, piston rod nut 7.
Embodiment
Relevant detailed description of the present utility model and technology contents, coordinate accompanying drawing to be described as follows, yet accompanying drawing only provides the use of reference with explanation, is not used for the utility model to be limited.
With reference to accompanying drawing 1, this oil resistant hermetic seal oil cylinder comprises cylinder body 2, piston rod 1, piston assembly, described piston assembly is arranged in cylinder body, described piston rod front end stretches in cylinder body and is connected with piston assembly, and piston assembly comprises hydraulic seal piston and the gas packed-piston 3 that is all fixed in piston rod front end.Described hydraulic seal piston at least arranges two, and between two hydraulic seal pistons, is provided with gas seal piston.The both sides of described gas seal piston are provided with closure gasket groove, and y-shaped ring is installed in closure gasket groove.Described piston rod front end is offered the outer shroud platform that is used for fixing piston assembly, puts after piston assembly, fixing tight with piston rod nut 7 in piston rod end.
When oil cylinder is worked, when working medium enters in cylinder body 2 from the right side of oil cylinder, liquid-working-medium in working medium is because the sealing of front hydraulic seal piston 6 and hydraulic seal circle mounted thereto cannot realize sealing, gas medium in working medium is realized sealing due to the y-shaped ring 4 on gas seal piston 5 and right side, thereby reaches the object of mixing sealing.
In like manner, when working medium enters in cylinder body 2 from the left side of oil cylinder, liquid-working-medium in working medium is because the sealing of front hydraulic seal piston 3 and hydraulic seal circle mounted thereto cannot realize sealing, gas medium in working medium is realized sealing due to the y-shaped ring 4 in gas seal piston 5 and left side, thereby reaches the object of mixing sealing.
The foregoing is only preferred embodiment of the present utility model, non-in order to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (4)
1. oil resistant hermetic seal oil cylinder, comprise cylinder body, piston rod, piston assembly, described piston assembly is arranged in cylinder body, and described piston rod front end stretches in cylinder body and is connected with piston assembly, it is characterized in that, piston assembly comprises hydraulic seal piston and the gas packed-piston that is all fixed in piston rod front end.
2. oil resistant hermetic seal oil cylinder according to claim 1, is characterized in that, described hydraulic seal piston at least arranges two, and between two hydraulic seal pistons, is provided with gas seal piston.
3. oil resistant hermetic seal oil cylinder according to claim 2, is characterized in that, the both sides of described gas seal piston are provided with closure gasket groove, and y-shaped ring is installed in closure gasket groove.
4. oil resistant hermetic seal oil cylinder according to claim 1, is characterized in that, described piston rod front end is offered the outer shroud platform that is used for fixing piston assembly, puts after piston assembly, fixing tight with piston rod nut in piston rod end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420299123.5U CN203926211U (en) | 2014-06-06 | 2014-06-06 | Oil resistant hermetic seal oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420299123.5U CN203926211U (en) | 2014-06-06 | 2014-06-06 | Oil resistant hermetic seal oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926211U true CN203926211U (en) | 2014-11-05 |
Family
ID=51822028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420299123.5U Expired - Lifetime CN203926211U (en) | 2014-06-06 | 2014-06-06 | Oil resistant hermetic seal oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994118A (en) * | 2014-06-06 | 2014-08-20 | 山东中川液压有限公司 | Sealed oil cylinder resistant to oil and gas |
-
2014
- 2014-06-06 CN CN201420299123.5U patent/CN203926211U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994118A (en) * | 2014-06-06 | 2014-08-20 | 山东中川液压有限公司 | Sealed oil cylinder resistant to oil and gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20160616 Granted publication date: 20141105 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20161216 Granted publication date: 20141105 |
|
| PP01 | Preservation of patent right |
Effective date of registration: 20170613 Granted publication date: 20141105 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200613 Granted publication date: 20141105 |
|
| PD01 | Discharge of preservation of patent | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141105 |