CN202251226U - Hydraulic cylinder sealing device - Google Patents
Hydraulic cylinder sealing device Download PDFInfo
- Publication number
- CN202251226U CN202251226U CN2011202987077U CN201120298707U CN202251226U CN 202251226 U CN202251226 U CN 202251226U CN 2011202987077 U CN2011202987077 U CN 2011202987077U CN 201120298707 U CN201120298707 U CN 201120298707U CN 202251226 U CN202251226 U CN 202251226U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- hydraulic cylinder
- sealing device
- oil hydraulic
- dottle pin
- 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 - Lifetime
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Abstract
The utility model discloses a hydraulic cylinder sealing device, which comprises a hydraulic cylinder body (5) and a plunger piston (7), wherein the end part of the plunger piston (7) is provided with a spherical surface pad station (1). The hydraulic cylinder sealing device is characterized in that an isolation pad (2) arranged on the cylinder body (5) is arranged between the spherical surface pad station (1) and the end part of the cylinder body (5), an annular space (3) is formed between the cylinder body (5) and the isolation pad (2), and an overflow hole (4) communicated with the annular space (3) is arranged on the cylinder body (5). The hydraulic cylinder sealing device has the advantages that the structure is simple and reasonable, a dustproof ring with an auxiliary sealing effect is added on the isolation pad, the sealing performance is better, leaked oil liquid can be recovered into an oil box to be repeatedly used, the surrounding environment is optimized, and resources are saved.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder, specifically a kind of seal arrangement of oil hydraulic cylinder.
Background technique
Therefore because always there is internal leakage in hydraulic cylinder sealing, traditional design is to open a drain pan in the oil hydraulic cylinder head flanges, makes the fluid that leaks out overflow underground or reclaim with keg through the aperture of drain pan.Because this kind structure is contaminated through the fluid that drain pan leaks out, can not return fuel tank and utilize again, causes environmental pollution, the wasting of resources.
Summary of the invention
The purpose of the utility model provides a kind of seal arrangement of oil hydraulic cylinder
The utility model is to adopt following technological scheme to realize its goal of the invention; A kind of seal arrangement of oil hydraulic cylinder; It comprises cylinder body, the plunger of oil hydraulic cylinder, and the end of plunger is provided with the ball ring platform, is provided with the dottle pin that is installed on the cylinder body between the end of cylinder body and the ball ring platform; Form annulus between cylinder body and the dottle pin, cylinder body is provided with the overflow hole that communicates with annulus.
The dottle pin of the utility model is provided with dust ring.
Because adopt technique scheme, the utility model has been realized goal of the invention preferably, it is simple in structure; Rationally; Increase the dust ring that the auxiliary seal effect is arranged on the dottle pin, sealability is better, and the fluid that leaks out can be recycled to heavily clothes use in the fuel tank; Optimize surrounding enviroment, practiced thrift resource.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Can know by Fig. 1; A kind of seal arrangement of oil hydraulic cylinder; It comprises cylinder body 5, the plunger 7 of oil hydraulic cylinder, and the end of plunger 7 is provided with ball ring platform 1, is provided with the dottle pin 2 that is installed on the cylinder body 5 between the end of cylinder body 5 and the ball ring platform 1; Form annulus 3 between cylinder body 5 and the dottle pin 2, cylinder body 5 is provided with the overflow hole 4 that communicates with annulus 3.
The dottle pin 2 of the utility model is provided with dust ring 6.
When the utility model uses; The ball ring platform 1 that the bottom that gets into oil hydraulic cylinder from the high-voltage oil liquid of oil hydraulic pump promotes plunger 7 and top moves upward; The annulus 3, the overflow hole 4 that between cylinder body 5 and dottle pin 2, form through the hydraulic oil that seal ring leaks out flow out, because annulus 3 and external isolation, the fluid that leaks out does not have contaminated; Can directly be recovered to the fuel tank of hydraulic station by pipeline, recycle.Because dust ring 6 has the auxiliary seal effect, the oil liquid leakage amount is littler simultaneously.
Claims (2)
1. the seal arrangement of an oil hydraulic cylinder; It comprises cylinder body (5), the plunger (7) of oil hydraulic cylinder; The end of plunger (7) is provided with ball ring platform (1); It is characterized in that being provided with the dottle pin (2) that is installed on the cylinder body (5) between end and the ball ring platform (1) of cylinder body (5), form annulus (3) between cylinder body (5) and the dottle pin (2), cylinder body (5) is provided with the overflow hole (4) that communicates with annulus (3).
2. the seal arrangement of oil hydraulic cylinder according to claim 1 is characterized in that dottle pin (2) is provided with dust ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202987077U CN202251226U (en) | 2011-08-17 | 2011-08-17 | Hydraulic cylinder sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202987077U CN202251226U (en) | 2011-08-17 | 2011-08-17 | Hydraulic cylinder sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251226U true CN202251226U (en) | 2012-05-30 |
Family
ID=46112476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202987077U Expired - Lifetime CN202251226U (en) | 2011-08-17 | 2011-08-17 | Hydraulic cylinder sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305293A (en) * | 2011-08-17 | 2012-01-04 | 益阳橡胶塑料机械集团有限公司 | Sealing device of hydraulic cylinder |
-
2011
- 2011-08-17 CN CN2011202987077U patent/CN202251226U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305293A (en) * | 2011-08-17 | 2012-01-04 | 益阳橡胶塑料机械集团有限公司 | Sealing device of hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |