CN2184120Y - Bidirectional combined sealing element - Google Patents
Bidirectional combined sealing element Download PDFInfo
- Publication number
- CN2184120Y CN2184120Y CN 93227023 CN93227023U CN2184120Y CN 2184120 Y CN2184120 Y CN 2184120Y CN 93227023 CN93227023 CN 93227023 CN 93227023 U CN93227023 U CN 93227023U CN 2184120 Y CN2184120 Y CN 2184120Y
- Authority
- CN
- China
- Prior art keywords
- ring
- combined
- sealing
- hollow rubber
- piston
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 21
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 5
- 210000004907 gland Anatomy 0.000 claims abstract description 13
- 238000012856 packing Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 4
- 238000009434 installation Methods 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
Images
Landscapes
- Sealing Devices (AREA)
Abstract
A bidirectional combined sealing element can be widely applied to reciprocating machinery using liquid or gas as working medium to perform dynamic sealing and static sealing. It is composed of a combined piston, a combined sealing ring and a protective retainer ring. The combined piston comprises a piston body and an adjusting gland, and the combined sealing ring comprises a hollow rubber ring and a framework. The framework is arranged in the hollow rubber ring and forms two pressure chambers with the rubber ring. The two sides of the combined sealing ring are provided with protective check rings to form a closed pressure cavity. The combined sealing ring and the protective check ring are fixed on the piston body by the adjusting gland. Working medium enters the combined seal ring framework pore passage from the middle hole of the adjusting gland through the middle hole of the protective retainer ring, and the two pressure chambers of the closed pressure cavity are respectively pressurized, so that the hollow rubber ring simultaneously plays a role in sealing the movable contact surface and the static installation surface.
The utility model discloses, reasonable in design, simple structure requires lowly to cylinder body machining precision, nevertheless does not leak, does not fall to press, longe-lived.
Description
A kind of bidirectional combination type Sealing, can extensively be used for liquid or gas is the to-and-fro motion machinery of working medium with answering, does dynamic seal (packing) and static sealing.
At present, in reciprocating movement sealing, Sealing is divided into Y type, V-type, O type etc. by shape, but easily leaks during above-mentioned sealing part works, presses most likely, does not reach normal seal request.
The purpose of this utility model is a kind of new type sealing element of design, guarantees not leak, does not fall to press, and reaches the purpose of overhauling synchronously with main equipment, reduces equipment failure rate.
Effect of the present utility model is achieved in that the employing combined piston, and combined type packing ring, protection back-up ring are formed the bidirectional combination type Sealing.Combined piston comprises piston body, adjusts gland.Combined type packing ring comprises hollow rubber circle and skeleton.Skeleton is contained in the hollow rubber circle, forms combined type packing ring both sides, two pressure chambers with cushion rubber the protection back-up ring is housed, and forms an airtight pressure chamber.Combined type packing ring and protection back-up ring are fixed on the piston body with the adjustment gland.Adjusting under the gland effect, make combined type packing ring produce certain pretightening force, the sealing when guaranteeing low pressure.During work, high-pressure medium enters combined labyrinth and carbon gland ring framework duct from adjusting the gland intermediate hole through overprotection back-up ring intermediate hole, pressurizes simultaneously to two pressure chambers in seal-off pressure chamber, makes the hollow rubber circle play the seal action of moving surface of contact and quiet attachment face simultaneously.
Below in conjunction with accompanying drawing, enforcement of the present utility model is illustrated:
Among the figure: ［ 1 ］ cylinder body ［ 2 ］ is adjusted the outer protection of gland ［ 3 ］ back-up ring ［ 4 ］ skeleton ］ the interior protection of ［ 5 ］ hollow rubber circle ［ 6 ］ back-up ring ［ 7 ］ piston body.In working medium enters cylinder body ［ 1 ］; when the promotion piston moves; high-pressure medium is by adjusting gland ［ 2 ］ intermediate hole; through outer protection back-up ring ［ 3 ］ intermediate hole; enter skeleton ［ 4 ］ passage; two pressurisation of pressure chambers in pressure chamber, the pressure that hollow rubber circle ［ 5 ］ is driven between inside and outside protection back-up ring ［ 6 ］, ［ 5 ］ and cylinder body ［ 1 ］ and the piston body ［ 7 ］ strengthens, and reaches the effect that moving surface of contact and quiet attachment face seal simultaneously.
The utility model is reasonable in design, and is simple in structure, low to the cylinder body requirement on machining accuracy, but do not leak, and pressure maintaining performance is good, and the life-span is long.
Claims (3)
1, the bidirectional combination type Sealing a kind of by combined piston, that combined type packing ring and protection back-up ring are formed.It is characterized in that combined piston comprises piston body, adjusts gland.Combined type packing ring comprises hollow rubber circle and skeleton.Skeleton is contained in the hollow rubber circle, forms the pressure chamber with cushion rubber.Pressure medium enters the skeleton duct by adjusting gland and protection back-up ring intermediate hole, delivers to the pressure chamber.
2, a kind of according to the described Sealing of claim 1, it is characterized in that the pressure chamber that skeleton and hollow rubber circle form is two, the pressure medium passing hole channel enters two pressure chambers simultaneously, to both direction pressure sealing simultaneously.
3, a kind of according to the described Sealing of claim 1; its another feature is that combined type packing ring forms an airtight pressure chamber under protection back-up ring and the effect of adjustment gland; pressure medium to hollow rubber circle and the pressurization of protection back-up ring, is protected the hollow rubber circle simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93227023 CN2184120Y (en) | 1993-01-05 | 1993-01-05 | Bidirectional combined sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93227023 CN2184120Y (en) | 1993-01-05 | 1993-01-05 | Bidirectional combined sealing element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2184120Y true CN2184120Y (en) | 1994-11-30 |
Family
ID=33804372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93227023 Expired - Fee Related CN2184120Y (en) | 1993-01-05 | 1993-01-05 | Bidirectional combined sealing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2184120Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769525A (en) * | 2010-02-24 | 2010-07-07 | 海洋王照明科技股份有限公司 | Hollow sealing element |
-
1993
- 1993-01-05 CN CN 93227023 patent/CN2184120Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769525A (en) * | 2010-02-24 | 2010-07-07 | 海洋王照明科技股份有限公司 | Hollow sealing element |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4550899A (en) | Pneumatic spring | |
| US4583722A (en) | Nitrogen die cylinder | |
| GB969155A (en) | Improvements in or relating to seals for hydraulic rams | |
| CA2222799A1 (en) | Pneumatic spring | |
| CN2184120Y (en) | Bidirectional combined sealing element | |
| EP0172780A3 (en) | Fluid operated pump | |
| CN211820190U (en) | Hydraulic cylinder device of leak protection type | |
| KR20020082404A (en) | Seal structure of compressor and compressor having the same | |
| FR2260004A1 (en) | Hydraulic piston pump - has valve connecting piston space to delivery side, with adjoining space interconnecting valves, delivery sides | |
| GB1333366A (en) | Packing for devices such as compressors or pumps | |
| CA2491298A1 (en) | Pneumatic reciprocating motor | |
| CA2001707A1 (en) | Air-oil pressure intensifier cylinder | |
| CN2168996Y (en) | Assembled sealing ring | |
| CN112664506B (en) | Hydraulic oil cylinder | |
| CN212337997U (en) | Nitrogen spring capable of stretching and retracting in two directions | |
| IL86201A0 (en) | Rotary compressors | |
| CN2182898Y (en) | Inner pressure type combined and sealed hydraulic cylinder | |
| CN220869772U (en) | Pressurized oil cylinder with double piston sealing elements | |
| CN2660228Y (en) | Strongly sealed piston | |
| JP2531830Y2 (en) | Cylinder buffer structure | |
| CN2451817Y (en) | Self-tightening endodynamic seal ring | |
| CN218294566U (en) | Improved fluid discharge valve | |
| JPS59164407A (en) | Cylinder device having vacuum chamber | |
| KR200315528Y1 (en) | Cylinder to equip powertank | |
| CN2451818Y (en) | Self-tightening ectodynamic sealing ring |
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 |