JPS6237664U - - Google Patents
Info
- Publication number
- JPS6237664U JPS6237664U JP1985128471U JP12847185U JPS6237664U JP S6237664 U JPS6237664 U JP S6237664U JP 1985128471 U JP1985128471 U JP 1985128471U JP 12847185 U JP12847185 U JP 12847185U JP S6237664 U JPS6237664 U JP S6237664U
- Authority
- JP
- Japan
- Prior art keywords
- seal
- shaft
- annular cavity
- lip portions
- sealing device
- 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
- 238000007789 sealing Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
第１図は本考案の一実施例に係る密封装置の要
部縦断面図、第２図は本考案の他の実施例を示す
密封装置の要部縦断面図、第３図は従来の密封装
置の要部縦断面図、第４図は負圧と軸回転数との
関係図である。
符号の説明、１……第１シールリング、１ａ…
…第１シールリツプ部、１ｂ……リツプ先端、１
ｃ……第１シール部、２……第２シールリング、
２ａ……第２シールリツプ部、２ｂ……リツプ先
端、２ｃ……第２シール部、３……軸、４……ハ
ウジング、５……金属環、９……環状空室、１０
……ねじ部、１１……螺旋状通路、１２，１３，
１４……空隙、１５……連通路、Ａ……保持部、
Ｌ１，Ｌ２……第１、第２密封流体。
Fig. 1 is a vertical cross-sectional view of a main part of a sealing device according to an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of a main part of a sealing device showing another embodiment of the present invention, and Fig. 3 is a conventional sealing device. FIG. 4, which is a vertical sectional view of the main part of the device, is a diagram showing the relationship between negative pressure and shaft rotation speed. Explanation of symbols, 1...First seal ring, 1a...
...First seal lip part, 1b... Lip tip, 1
c...First seal part, 2...Second seal ring,
2a... Second seal lip part, 2b... Lip tip, 2c... Second seal part, 3... Shaft, 4... Housing, 5... Metal ring, 9... Annular cavity, 10
... Threaded portion, 11 ... Spiral passage, 12, 13,
14...Gap, 15...Communication path, A...Holding part,
L 1 , L 2 ...first and second sealing fluids.
Claims (1)
れるハウジング内周に保持部を嵌合し、該保持部
に、相対する異種密振流体の一方側および他方側
に延びてリツプ先端が上記軸表面と接触して第１
および第２シール部を形成する第１および第２シ
ールリツプ部を備えた第１および第２シールリン
グを組付け、上記第１および第２シールリツプ部
と上記軸表面との間に環状空室を構成した密封装
置において、 上記第１および第２シールリツプ部のうち少な
くとも一方のリツプ先端の上記環状空室側にねじ
部を設けると共に、上記保持部材に上記環状空室
と外気とを連通せしめ、かつ気体の流通は許容し
て液体の流通は阻止せしめる連通路を設けたこと
を特徴とする密封装置。[Claims for Utility Model Registration] A holding part is fitted to the inner periphery of a housing which is disposed on the outer periphery of a shaft so as to be rotatable relative to the shaft, and one side of the opposite dissimilar dense vibration fluid is fitted into the holding part. and extends to the other side so that the tip of the lip contacts the shaft surface and the first
and assembling first and second seal rings having first and second seal lip portions forming a second seal portion, and forming an annular cavity between the first and second seal lip portions and the shaft surface. In the sealing device, a threaded portion is provided at the tip end of at least one of the first and second seal lip portions on the side of the annular cavity, and the retaining member communicates the annular cavity with outside air, and the gas A sealing device characterized by having a communication path that allows the flow of liquid but prevents the flow of liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985128471U JPS6237664U (en) | 1985-08-23 | 1985-08-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985128471U JPS6237664U (en) | 1985-08-23 | 1985-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6237664U true JPS6237664U (en) | 1987-03-05 |
Family
ID=31024172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985128471U Pending JPS6237664U (en) | 1985-08-23 | 1985-08-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6237664U (en) |
-
1985
- 1985-08-23 JP JP1985128471U patent/JPS6237664U/ja active Pending
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