JPH01148173U - - Google Patents
Info
- Publication number
- JPH01148173U JPH01148173U JP4477388U JP4477388U JPH01148173U JP H01148173 U JPH01148173 U JP H01148173U JP 4477388 U JP4477388 U JP 4477388U JP 4477388 U JP4477388 U JP 4477388U JP H01148173 U JPH01148173 U JP H01148173U
- Authority
- JP
- Japan
- Prior art keywords
- seal
- pressure
- ring
- housing
- piston member
- 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.)
- Pending
Links
- 230000013011 mating Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 1
Landscapes
- Mechanical Sealing (AREA)
Description
第１図は本考案の一実施例を示す概略的な半裁
断面図、第２図は他の実施例を示す概略的な半裁
断面図である。
１…ハウジング、２…回転軸、５…金属ベロー
ズ、６…リテーナ、７…シールリング、９…メイ
テイングリング、１０…気密摺動部、１１，１２
…パツキング、１１′，１２′…リツプシール、
１３…ピストン部材、１４…導圧孔、１５…外部
圧力源、１６…板バネ、１７，１８…保持金具、
１９…コイルバネ、Ｓ３…導圧空間。
FIG. 1 is a schematic half-cut sectional view showing one embodiment of the present invention, and FIG. 2 is a schematic half-cut sectional view showing another embodiment. DESCRIPTION OF SYMBOLS 1... Housing, 2... Rotating shaft, 5... Metal bellows, 6... Retainer, 7... Seal ring, 9... Mating ring, 10... Airtight sliding part, 11, 12
...packing, 11', 12'...lip seal,
13... Piston member, 14... Pressure guiding hole, 15... External pressure source, 16... Leaf spring, 17, 18... Holding metal fittings,
19... Coil spring, S3... Pressure guiding space.
Claims (1)
勢されたシールリングのうちの一方がハウジング
内周に、他方が回転軸外周にそれぞれ気密的に装
着され、互いに対接して密封摺動部を形成すると
ともに、該密封摺動部の両側の空間の圧力差によ
つて、シールリングがメイテイングリングと接離
するリフトオフシールにおいて、ハウジング内周
に、シールリングまたは該シールリングと一体の
部材と軸方向に対接する環状のピストン部材を設
け、該ピストン部材とハウジングの間に外部から
の圧力が導入される導圧空間を気密形成し、該導
圧空間の圧力により、前記ピストン部材は軸方向
に変位することを特徴とするリフトオフシール。 One of the mating ring and the sealing ring, which is biased in the axial direction by a spring means, is airtightly attached to the inner periphery of the housing, and the other is attached to the outer periphery of the rotating shaft, and these are in contact with each other to form a sealed sliding part. At the same time, in the lift-off seal where the seal ring comes into contact with and separates from the mating ring due to the pressure difference between the spaces on both sides of the seal sliding part, the seal ring or a member integrated with the seal ring and a shaft are provided on the inner periphery of the housing. An annular piston member is provided which faces each other in the direction, and a pressure guiding space is airtightly formed between the piston member and the housing into which pressure from the outside is introduced, and the pressure in the pressure guiding space causes the piston member to move in the axial direction. A lift-off seal characterized by displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4477388U JPH01148173U (en) | 1988-04-04 | 1988-04-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4477388U JPH01148173U (en) | 1988-04-04 | 1988-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01148173U true JPH01148173U (en) | 1989-10-13 |
Family
ID=31271122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4477388U Pending JPH01148173U (en) | 1988-04-04 | 1988-04-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01148173U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6028655B2 (en) * | 1978-03-20 | 1985-07-05 | 三菱レイヨン株式会社 | Manufacturing method of composite nameplate |
| JPS62118166A (en) * | 1985-09-23 | 1987-05-29 | ア−・エ−・ゲ−・カニス・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Sealing device with gas-lubricated sliding seal |
-
1988
- 1988-04-04 JP JP4477388U patent/JPH01148173U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6028655B2 (en) * | 1978-03-20 | 1985-07-05 | 三菱レイヨン株式会社 | Manufacturing method of composite nameplate |
| JPS62118166A (en) * | 1985-09-23 | 1987-05-29 | ア−・エ−・ゲ−・カニス・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Sealing device with gas-lubricated sliding seal |
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