JPH0360659U - - Google Patents
Info
- Publication number
- JPH0360659U JPH0360659U JP12138689U JP12138689U JPH0360659U JP H0360659 U JPH0360659 U JP H0360659U JP 12138689 U JP12138689 U JP 12138689U JP 12138689 U JP12138689 U JP 12138689U JP H0360659 U JPH0360659 U JP H0360659U
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- wall thickness
- seal ring
- ptfe
- mechanical seal
- 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
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 2
Landscapes
- Mechanical Sealing (AREA)
Description
第１図は本考案ＰＴＦＥベローズ型メカニカル
シールの第一実施例を示す半裁断面図、第２図は
従来のＰＴＦＥベローズ型メカニカルシールを示
す半裁断面図、第３図は内周側圧力によるＰＴＦ
Ｅベローズの変形状態を示す説明図である。
４……シヤフト、５……シールリング、１０…
…ＰＴＦＥベローズ、１３……蛇腹状本体部分、
１３ａ……両端山谷部、１３ｂ……軸方向中央の
山谷部、Ａ……密封対象流体。
Fig. 1 is a half-cut cross-sectional view showing the first embodiment of the PTFE bellows-type mechanical seal of the present invention, Fig. 2 is a half-cut cross-sectional view showing a conventional PTFE bellows-type mechanical seal, and Fig. 3 is a half-cut cross-sectional view showing the first embodiment of the PTFE bellows-type mechanical seal of the present invention.
It is an explanatory view showing a deformed state of E bellows. 4...Shaft, 5...Seal ring, 10...
...PTFE bellows, 13...bellow-shaped main body part,
13a... Peaks and valleys at both ends, 13b... Peaks and valleys at the center in the axial direction, A... Fluid to be sealed.
Claims (1)
回転側もしくは固定側との間にＰＴＦＥベローズ
を気密的に接合してなり、密封対象流体がシール
リング摺動面の内周側に連通する空間に存するメ
カニカルシールにおいて、ＰＴＦＥベローズの蛇
腹状本体部分の両端山谷部の肉厚を、軸方向略中
央の山谷部の肉厚よりも大きくしてなることを特
徴とするＰＴＦＥベローズ型メカニカルシール。 ２ 請求項１の記載において、蛇腹状本体部分の
肉厚を、軸方向略中央の山谷部から両端山谷部へ
かけて漸次大きくしてなることを特徴とするＰＴ
ＦＥベローズ型メカニカルシール。[Claims for Utility Model Registration] 1 A PTFE bellows is airtightly joined between a seal ring and a rotating side or stationary side that supports this seal ring, and the fluid to be sealed is connected to the inner periphery of the seal ring sliding surface. A PTFE bellows, which is a mechanical seal existing in a space that communicates with the side, wherein the wall thickness of the peaks and valleys at both ends of the bellows-shaped main body portion of the PTFE bellows is larger than the wall thickness of the valleys at the substantially center in the axial direction. Type mechanical seal. 2. The PT according to claim 1, wherein the wall thickness of the bellows-shaped main body portion is gradually increased from the axially substantially central ridge portion to the ridges and trough portions at both ends.
FE bellows type mechanical seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12138689U JPH0360659U (en) | 1989-10-17 | 1989-10-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12138689U JPH0360659U (en) | 1989-10-17 | 1989-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0360659U true JPH0360659U (en) | 1991-06-14 |
Family
ID=31669420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12138689U Pending JPH0360659U (en) | 1989-10-17 | 1989-10-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0360659U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60215163A (en) * | 1984-04-06 | 1985-10-28 | Nippon Mektron Ltd | Boot |
-
1989
- 1989-10-17 JP JP12138689U patent/JPH0360659U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60215163A (en) * | 1984-04-06 | 1985-10-28 | Nippon Mektron Ltd | Boot |