CN2687433Y - Piston sealing structure - Google Patents
Piston sealing structure Download PDFInfo
- Publication number
- CN2687433Y CN2687433Y CN 200420017238 CN200420017238U CN2687433Y CN 2687433 Y CN2687433 Y CN 2687433Y CN 200420017238 CN200420017238 CN 200420017238 CN 200420017238 U CN200420017238 U CN 200420017238U CN 2687433 Y CN2687433 Y CN 2687433Y
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing
- piston
- metal
- piston ring
- 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
Landscapes
- Sealing Devices (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a long-life seal structure with good sealing performance for a hydraulic cylinder piston. The outer neck of the hydraulic cylinder piston is arranged side by side with a metal piston ring and a non-metal filler sealing ring, wherein, the non-metal filler sealing ring being an O-shaped sealing ring made of polyurethane is preferred, and the metal piston ring being a wear-resistant cast iron piston ring is preferred. The sealing structure adopts a sealing by the combination of the metal piston ring and the non-metal filler sealing ring; the arrangement is simple and the structure is reasonable. At the first running-in stage in the process of working, the non-metal filler sealing ring has a good dominance of the sealing performance; the complete running-in is made in the process of working, the metal piston ring and the non-metal filler sealing ring both have the sealing functions, and the sealing performance is better at this time.
Description
Technical field
The utility model relates to the sealing configuration of hydraulic cylinder piston.
Background technique
The sealing configuration of existing hydraulic cylinder piston is varied, but totally can be divided into two classes: the first kind is the non-metallic fillers sealing of good airproof performance; Second class is the metallic piston ring sealing of durable wear.First kind good seal performance, but nonmetallic material are aging easily, the life-span is short, and the nonmetallic material price that the life-span is grown slightly is high again.The sealing of second class is durable in use, but the opening of piston ring itself reaches and the applying degree error of endoporus, and sealability is slightly poor.
Summary of the invention
The purpose of this utility model provides the sealing configuration of a kind of good seal performance, long-lived hydraulic cylinder piston.
The sealing configuration of the utility model piston is: be arranged in juxtaposition metallic piston ring and non-metallic fillers seal ring on the outer neck of hydraulic cylinder piston.Wherein, the non-metallic fillers seal ring is preferably polyurethane O RunddichtringO, and the metallic piston ring is preferably the wear resisting cast iron piston ring.
The utility model piston sealing structure adopts piston ring and non-metallic fillers seal ring combination seal, arranges simple, rational in infrastructure.At the break-in initial stage, the non-metallic fillers seal ring embodies the advantage of good seal performance in the work; When break-in fully at work, metallic piston ring and non-metallic fillers seal ring play seal action simultaneously, at this moment better tightness; In break-in late period, the non-metallic fillers seal ring is aging, and the metallic piston ring seals.Described piston sealing structure had both solved the problem that piston ring packing has internal leakage, had solved non-metallic fillers short, not ageing-resistant problem sealing life again.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, multiple row metallic piston ring 2 and non-metallic fillers seal ring 3 on the outer neck of hydraulic cylinder piston 1, have been arranged in juxtaposition.Wherein, non-metallic fillers seal ring 3 is a polyurethane O RunddichtringO, and metallic piston ring 2 is the wear resisting cast iron piston ring.
Claims (2)
1, the sealing configuration of piston is characterized in that: be arranged in juxtaposition metallic piston ring and non-metallic fillers seal ring on the outer neck of hydraulic cylinder piston.
2, the sealing configuration of piston according to claim 1 is characterized in that: described non-metallic fillers seal ring is a polyurethane O RunddichtringO, and described metallic piston ring is the wear resisting cast iron piston ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017238 CN2687433Y (en) | 2004-02-23 | 2004-02-23 | Piston sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017238 CN2687433Y (en) | 2004-02-23 | 2004-02-23 | Piston sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2687433Y true CN2687433Y (en) | 2005-03-23 |
Family
ID=34668919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420017238 Expired - Fee Related CN2687433Y (en) | 2004-02-23 | 2004-02-23 | Piston sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2687433Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012113349A1 (en) * | 2011-02-25 | 2012-08-30 | Innozeal Technology Ltd. | Hydraulic cylinder and spool type hydraulic control valve with metallic seal ring |
| CN103968072A (en) * | 2014-05-21 | 2014-08-06 | 西北工业大学 | Novel sealing element |
| CN106415085A (en) * | 2014-06-12 | 2017-02-15 | 三菱电线工业株式会社 | Seal ring |
| CN106593985A (en) * | 2015-10-14 | 2017-04-26 | 安徽华尔泰化工股份有限公司 | Gas making workshop hydraulic oil cylinder |
-
2004
- 2004-02-23 CN CN 200420017238 patent/CN2687433Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012113349A1 (en) * | 2011-02-25 | 2012-08-30 | Innozeal Technology Ltd. | Hydraulic cylinder and spool type hydraulic control valve with metallic seal ring |
| CN103968072A (en) * | 2014-05-21 | 2014-08-06 | 西北工业大学 | Novel sealing element |
| CN106415085A (en) * | 2014-06-12 | 2017-02-15 | 三菱电线工业株式会社 | Seal ring |
| CN106415085B (en) * | 2014-06-12 | 2018-11-13 | 三菱电线工业株式会社 | sealing ring |
| CN106593985A (en) * | 2015-10-14 | 2017-04-26 | 安徽华尔泰化工股份有限公司 | Gas making workshop hydraulic oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |