CN2766119Y - Piston rod sealing device - Google Patents
Piston rod sealing device Download PDFInfo
- Publication number
- CN2766119Y CN2766119Y CN 200520069163 CN200520069163U CN2766119Y CN 2766119 Y CN2766119 Y CN 2766119Y CN 200520069163 CN200520069163 CN 200520069163 CN 200520069163 U CN200520069163 U CN 200520069163U CN 2766119 Y CN2766119 Y CN 2766119Y
- Authority
- CN
- China
- Prior art keywords
- piston rod
- seal ring
- sealing
- star
- end portion
- 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
Links
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- Sealing Devices (AREA)
Abstract
The utility model discloses sealing device for a piston rod which belongs to the technical field of a sealing device. The sealing device for a piston rod comprises a circumferential ring groove arranged on a piston rod. A sealing ring matched with the circumferential ring groove is arranged in the circumferential ring groove. An O-shaped sealing loop is arranged between the inner round surface of the sealing ring and the bottom surface of the circumferential ring groove. A star-shaped sealing loop with round end parts and a four horn star-shaped cross section is embedded into the outer round surface of the sealing ring. The upper and the lower symmetrical round end parts of the star-shaped sealing loop are protruded out of the outer round surface of the sealing ring. The utility model which can be used on a piston rod of a hydraulic machine has the advantages of high pressure prevention, high wear resistance and favorable sealing effect.
Description
Technical field
The utility model relates to a kind of seal arrangement, particularly the seal arrangement of hydraulic machine piston bar.
Background technique
In the prior art, for the hydraulic oil that prevents hydraulic press is revealed between oil cylinder and piston rod, not only need between piston and oil cylinder, take reliable sealing, to solve the problem that high pressure is revealed, and need between oil cylinder and piston rod, take seal approach, to solve the low pressure leakage problems, at present, the seal arrangement that the hydraulic machine piston bar adopts, mainly comprise the circumferential groove in its end portion that is provided with on the piston rod, be provided with the seal ring suitable in the described circumferential groove in its end portion, be provided with the O RunddichtringO between the internal circular surfaces of seal ring and the bottom surface of circumferential groove in its end portion, also be provided with the annular groove of V-arrangement on the outer round surface of some seal ring with circumferential groove in its end portion; During installation, the O RunddichtringO is in compressive state, and seal ring closely contacts with oil cylinder inner wall, with exclusion seal ring space up and down, reach sealing purpose, owing to contact for face between seal ring and the oil cylinder inner wall, its surface of contact is big, causes poor sealing easily, its poor reliability.
The model utility content
The purpose of this utility model provides a kind of piston rod seal, makes its high pressure resistant, high abrasion, good sealing effect.
The purpose of this utility model is achieved in that a kind of piston rod seal, comprise the circumferential groove in its end portion that is provided with on the piston rod, be provided with suitable with it seal ring in the described circumferential groove in its end portion, be provided with the O RunddichtringO between the internal circular surfaces of seal ring and the bottom surface of circumferential groove in its end portion, embed the star seal ring that one end circle, section are arranged is four jiaos of stars on the periphery of described seal ring, laterally zygomorphic two rounded ends of described star seal ring protrude in the outer round surface of seal ring.
When the utility model is installed, make the O RunddichtringO be in compression state, O RunddichtringO crush seal ring and star seal ring are close to oil cylinder inner wall, have both had seal action, can compensate the wearing and tearing of star seal ring and seal ring again; Because star seal ring end is circular, making between star seal ring and the oil cylinder inner wall is the contacts of two diatoms, and this two places sealing has the two way sealed effect, and its sealing effect is better than the face contact, can effectively solve the low pressure leakage problems; Owing to can effectively solve the low pressure leakage problems by the star seal ring, make seal ring can adopt relatively harder material to make, strengthen that it is anti-extrudability, make the utility model can be high pressure resistant, simultaneously, also have high wear resistance.The utility model can be applicable to have high pressure resistant, high abrasion, advantage of good sealing effect on the piston rod of hydraulic press.
Description of drawings
Fig. 1 is the utility model structural representation;
Wherein, 1 piston rod, 2 circumferential groove in its end portion, 3O RunddichtringO, 4 seal rings, 5 star seal rings.
Embodiment
As figure, be piston rod seal, comprise the circumferential groove in its end portion 2 that is provided with on the piston rod 1, be provided with suitable with it seal ring 4 in the circumferential groove in its end portion 2, be provided with O RunddichtringO 3 between the bottom surface of the internal circular surfaces of seal ring 4 and circumferential groove in its end portion 2, embed the star seal ring 5 that one end circle, section are arranged is four jiaos of stars on the periphery of seal ring 4, star seal ring 5 laterally zygomorphic two rounded ends protrude in the outer round surface of seal ring 4; O RunddichtringO 3 and star seal ring 5 are made by oil-resistant rubber material, and seal ring 4 is special Kang Huan with high abrasion characteristic (a kind of ring of being made by the composite material of PTFE+Cu).
Claims (1)
1, a kind of piston rod seal, comprise the circumferential groove in its end portion that is provided with on the piston rod, be provided with suitable with it seal ring in the described circumferential groove in its end portion, be provided with the O RunddichtringO between the internal circular surfaces of seal ring and the bottom surface of circumferential groove in its end portion, it is characterized in that: embed the star seal ring that one end circle, section are arranged is four jiaos of stars on the periphery of described seal ring, laterally zygomorphic two rounded ends of described star seal ring protrude in the outer round surface of seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520069163 CN2766119Y (en) | 2005-02-18 | 2005-02-18 | Piston rod sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520069163 CN2766119Y (en) | 2005-02-18 | 2005-02-18 | Piston rod sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2766119Y true CN2766119Y (en) | 2006-03-22 |
Family
ID=36606782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520069163 Expired - Fee Related CN2766119Y (en) | 2005-02-18 | 2005-02-18 | Piston rod sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2766119Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106471293A (en) * | 2014-07-04 | 2017-03-01 | 密封工程股份有限公司 | Pressure discharges wiper assembly |
| CN108223790A (en) * | 2016-12-21 | 2018-06-29 | 伊希欧1控股有限公司 | For the plunger and connecting rod of connecting rod |
-
2005
- 2005-02-18 CN CN 200520069163 patent/CN2766119Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106471293A (en) * | 2014-07-04 | 2017-03-01 | 密封工程股份有限公司 | Pressure discharges wiper assembly |
| CN106471293B (en) * | 2014-07-04 | 2018-11-16 | 密封工程股份有限公司 | Pressure discharges wiper assembly |
| CN108223790A (en) * | 2016-12-21 | 2018-06-29 | 伊希欧1控股有限公司 | For the plunger and connecting rod of connecting rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Yangli Group Co., Ltd. Assignor: Jiangsu Guoli Forging Machine Tool Co., Ltd. Contract fulfillment period: 2007.12.28 to 2015.2.17 Contract record no.: 2008320000693 Denomination of utility model: Piston rod sealing device Granted publication date: 20060322 License type: Exclusive license Record date: 20081009 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.12.28 TO 2015.2.17; CHANGE OF CONTRACT Name of requester: JIANGSU YANGLI GROUP CO.,LTD. Effective date: 20081009 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060322 Termination date: 20130218 |