JPH0456978U - - Google Patents
Info
- Publication number
- JPH0456978U JPH0456978U JP9979990U JP9979990U JPH0456978U JP H0456978 U JPH0456978 U JP H0456978U JP 9979990 U JP9979990 U JP 9979990U JP 9979990 U JP9979990 U JP 9979990U JP H0456978 U JPH0456978 U JP H0456978U
- Authority
- JP
- Japan
- Prior art keywords
- seal
- ring
- circumferential surface
- secondary seal
- groove
- 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
- 230000003068 static effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 2
- 239000012530 fluid Substances 0.000 claims 1
- 101150071927 AANAT gene Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Mechanical Sealing (AREA)
Description
第１図は本考案の第１の実施例の断面図、第２
図は同実施例の要部の拡大図、第３図は同実施例
におけるシール作用の説明図、第４図、第５図及
び第６図はそれぞれ本考案の第２、第３及び第４
の実施例の断面図、第７図は従来の静圧型メカニ
カルシールを示し、同図ａはその断面図、同図ｂ
はその要部の拡大図、第８図は同従来の静圧型メ
カニカルシールのセカンダリシール部を示す拡大
図である。
１……シールランナ、２……シールリング、３
……ランナホルダ、４……スペーサ、５……主軸
、７……シールホルダ、３０……セカンダリシー
ル溝、Ｃ……弾性リング、Ｄ……スナツプリング
、Ｅ……Ｏリング、Ｆ……溝、Ｋ……貫通孔、Ｕ
……リング状溝、Ｘ……隙間、Ｗ……バツクアツ
プリング、Ｙ…高圧側、Ｚ……低圧側、Ｐｏ，Ｐ
ｉ……圧力分布。
Fig. 1 is a sectional view of the first embodiment of the present invention;
The figure is an enlarged view of the main part of the same embodiment, Figure 3 is an explanatory diagram of the sealing action in the same embodiment, and Figures 4, 5, and 6 are the second, third, and fourth parts of the present invention, respectively.
FIG. 7 shows a conventional static pressure mechanical seal, and FIG.
8 is an enlarged view of the main parts thereof, and FIG. 8 is an enlarged view showing the secondary seal portion of the conventional static pressure mechanical seal. 1...Seal runner, 2...Seal ring, 3
...Runner holder, 4...Spacer, 5...Main shaft, 7...Seal holder, 30...Secondary seal groove, C...Elastic ring, D...Snat spring, E...O ring, F...Groove, K ...Through hole, U
...Ring groove, X...Gap, W...Backup spring, Y...High pressure side, Z...Low pressure side, P o , P
i ...Pressure distribution.
Claims (1)
の隙間を設けたシールリングの低圧側内周面に設
けられたセカンダリシール溝に、シールリング内
周面と相対するシールホルダ外周面との間にシー
ルリングやシールホルダ材より弾性率が小さい弾
性リングを設け、同弾性リングの外周面とセカン
ダリシール溝のシールリング内周面との間にゴム
材料のＯリングを設け、同Ｏリングと前記セカン
ダリシール溝の低圧側端面の間にのみバツクアツ
プリングを設けたことを特徴とする静圧型メカニ
カルシールのセカンダリシール。 A secondary seal groove is provided on the low-pressure side inner circumferential surface of the seal ring, which has an axial gap between it and the seal runner, where fluid pressure acts. An elastic ring having a lower elastic modulus than that of the seal ring or seal holder material is provided, and an O-ring made of a rubber material is provided between the outer circumferential surface of the elastic ring and the inner circumferential surface of the seal ring of the secondary seal groove. A secondary seal of a static pressure mechanical seal, characterized in that a back-up spring is provided only between the low-pressure side end face of the secondary seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9979990U JPH0456978U (en) | 1990-09-26 | 1990-09-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9979990U JPH0456978U (en) | 1990-09-26 | 1990-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0456978U true JPH0456978U (en) | 1992-05-15 |
Family
ID=31841986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9979990U Pending JPH0456978U (en) | 1990-09-26 | 1990-09-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0456978U (en) |
-
1990
- 1990-09-26 JP JP9979990U patent/JPH0456978U/ja active Pending