CN2171040Y - Internal O shape compensating sealed ring - Google Patents
Internal O shape compensating sealed ring Download PDFInfo
- Publication number
- CN2171040Y CN2171040Y CN 93228926 CN93228926U CN2171040Y CN 2171040 Y CN2171040 Y CN 2171040Y CN 93228926 CN93228926 CN 93228926 CN 93228926 U CN93228926 U CN 93228926U CN 2171040 Y CN2171040 Y CN 2171040Y
- Authority
- CN
- China
- Prior art keywords
- shape
- sealing circle
- oil
- compensation sealing
- interior
- 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 sealed element, particularly an internal O-shaped compensating sealed ring for oil cylinders. The sealed ring is additionally provided with a polytetrafluoroethene sealed ring with wear resistance on the basis of the original internal O-shaped compensating sealed rings. The polytetrafluoroethene sealed ring with wear resistance contacts with a piston rod and the surface of the oil cylinder. The reliability of the seal is achieved and the service life is extended.
Description
The utility model relates to seal element, is specially a kind of O shape compensation sealing circle of oil cylinder.
Present encapsulating method in pressurized oil system, two kinds of gapped sealing and the sealings of use seal element.Its resistance of clearance seal form is little, and greasy property is good, but its reliability is relatively poor; Seal element commonly used is a seal ring.General seal ring is divided into O-ring seals, y-shaped ring and v-ring.Wherein V-arrangement and O shape also have the synchroballistic formula, be about to the V-arrangement lip in the face of pressure oil cavity, or interior O shape communicated with pressure oil cavity, the tension of utilizing oil pressure that O-ring seals is brought, reach sealed rubber and closely reach sealing with surperficial contact of oil cylinder, this method has improved reliability than clearance seal, but comparatively speaking, increase frictional force, influenced working life.
It is good that the purpose of this utility model provides a kind of sealing reliability, heatproof, withstand voltage, the interior O shape compensation sealing circle not yielding under high temperature, high pressure, difficult aging, wear-resisting, that comparative resistance is little, the life-span is long.
For achieving the above object, the utility model has adopted on the basis of O shape compensation sealing circle in former has increased a PTFE anti-wear seal ring, and it is contacted with oil cylinder, piston pole face.
The utility model because only need be in former on a side and the face that oil cylinder, piston rod contact of O shape compensation sealing circle, be established a pit, tumbles in square PTFE anti-wear seal ring therein, so structure is simple especially; Simultaneously because the heatproof that teflon has, withstand voltage, advantage such as surface friction drag is little, combining with interior O shape compensation just produces above-mentioned good effect, and has prolonged working life, has reduced consumption.
Further narrate the utility model below in conjunction with accompanying drawing and with embodiment:
Accompanying drawing 1 is the schematic representation of interior O type compensation sealing circle of the present utility model.
The sealing circle comprises an interior O shape rubber seal 4, it communicates with medium oil oil inlet pipe 8 by T shape oil-feed pad 7, on this rubber seal 4 and oil cylinder and piston rod abutted surface, be provided with PTFE anti-wear seal ring 5, be provided with the cylinder head gland nut 2 of fastening dust ring 1 and V-arrangement gland 3 on the top of rubber seal 4.
Oil during work in the pressure oil cavity is along the direction shown in the arrow 11, enter by oil inlet pipe 8 and oil-feed pad 7 in the O shape inner chamber 6 of interior O shape rubber seal 4, because the increase of medium oil pressure, produce the outside tension of O shape rubber ring 4, this tension promotes PTFE anti-wear seal ring 5, make itself and piston rod 10 fluid-tight engagement, reach high pressure and seal synchronously; Sail when being low pressure at sky, by V-arrangement gland 3 rubber seal 4 is produced outside tension by the pressure of adjusting gland nut 2, this tension is enough to the surface of contact of the cylinder wall under the low pressure 9 with piston rod 10 sealed up.
According to the regulation of Nippon Standard to leakage rate: the piston rod of oil cylinder directly is 50mm, and when stroke was 100m, external leakage was that the leakage rate of piston rod is 0.05m/.The test specimen that the utility model adopts is better than this index.By comparative trial, O shape compensation sealing circle is compared with O shape compensation sealing circle in the existing rubber in the utility model, improves working life more than one times.
Claims (3)
1, a kind of interior 0 shape compensation sealing circle, form by dust ring (1), gland (3), O shape rubber compensation sealing circle (4), it is characterized in that: it also establishes a pit on contacted of a side of interior O shape rubber compensation sealing circle (4) and oil cylinder, piston rod (10), tumble in square PTFE anti-wear seal ring (5) therein.
2, interior O shape compensation sealing circle according to claim 1 is characterized in that: with the contacted top of V-arrangement gland (3) cylinder head gland nut (2) is being set.
3, interior O shape compensation sealing circle according to claim 1 is characterized in that the O shape inner chamber (6) of O shape rubber compensation sealing circle (4) directly communicates with oil cylinder medium oil oil inlet pipe (8) by T shape oil-feed pad (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93228926 CN2171040Y (en) | 1993-07-31 | 1993-07-31 | Internal O shape compensating sealed ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93228926 CN2171040Y (en) | 1993-07-31 | 1993-07-31 | Internal O shape compensating sealed ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2171040Y true CN2171040Y (en) | 1994-07-06 |
Family
ID=33805887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93228926 Expired - Fee Related CN2171040Y (en) | 1993-07-31 | 1993-07-31 | Internal O shape compensating sealed ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2171040Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936434A (en) * | 2010-09-18 | 2011-01-05 | 无锡市拓发自控设备有限公司 | Rotating joint |
| CN101994836A (en) * | 2010-09-10 | 2011-03-30 | 佛山市钜仕泰粉末冶金有限公司 | Sealing device of vacuum moving element |
| CN102182846A (en) * | 2011-06-16 | 2011-09-14 | 丁宫滨 | Valve rubber compensating type one-way valve |
| CN104832651A (en) * | 2015-05-13 | 2015-08-12 | 福建海源自动化机械股份有限公司 | Dust-proof device and dust-proof ring |
-
1993
- 1993-07-31 CN CN 93228926 patent/CN2171040Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994836A (en) * | 2010-09-10 | 2011-03-30 | 佛山市钜仕泰粉末冶金有限公司 | Sealing device of vacuum moving element |
| CN101936434A (en) * | 2010-09-18 | 2011-01-05 | 无锡市拓发自控设备有限公司 | Rotating joint |
| CN102182846A (en) * | 2011-06-16 | 2011-09-14 | 丁宫滨 | Valve rubber compensating type one-way valve |
| CN102182846B (en) * | 2011-06-16 | 2012-11-14 | 丁宫滨 | Valve rubber compensating type one-way valve |
| CN104832651A (en) * | 2015-05-13 | 2015-08-12 | 福建海源自动化机械股份有限公司 | Dust-proof device and dust-proof ring |
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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 |