JPS61202759U - - Google Patents
Info
- Publication number
- JPS61202759U JPS61202759U JP8595285U JP8595285U JPS61202759U JP S61202759 U JPS61202759 U JP S61202759U JP 8595285 U JP8595285 U JP 8595285U JP 8595285 U JP8595285 U JP 8595285U JP S61202759 U JPS61202759 U JP S61202759U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- shaft
- permanent magnet
- ring
- pole piece
- 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.)
- Granted
Links
- 239000011553 magnetic fluid Substances 0.000 claims description 8
- 230000005294 ferromagnetic effect Effects 0.000 claims 2
- 238000007789 sealing Methods 0.000 claims 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
第１図は従来の構成にかかるこの種の装置の断
面図、第２図は第１図例の説明図、第３図は改良
された従来の断面図、第４図及び第５図は本考案
の一実施例を示す断面図及び第４図中―線断
面図、第６図及び第７図は夫々本考案の他の例を
示す断面図である。
１……磁石、２……ポールピース、２Ｂ……低
圧側最寄りのポールピース、３……磁性流体リン
グ、４……シヤフト、８……切り欠き溝、１３…
…磁性流体、Ａ……低圧側空間。
Fig. 1 is a sectional view of this type of device according to a conventional configuration, Fig. 2 is an explanatory view of the example shown in Fig. 1, Fig. 3 is a sectional view of an improved conventional device, and Figs. FIG. 4 is a sectional view showing one embodiment of the invention, and FIG. 4 is a sectional view taken along the line in FIG. 6, and FIGS. 6 and 7 are sectional views showing other examples of the invention. 1... Magnet, 2... Pole piece, 2B... Nearest pole piece on the low pressure side, 3... Magnetic fluid ring, 4... Shaft, 8... Notch groove, 13...
...Magnetic fluid, A...Low pressure side space.
Claims (1)
との両端に、同芯的に結合された強磁環状ポール
ピースと、該磁石及び該ポールピース内径側を同
芯的に貫通させる強磁性シヤフトと、該シヤフト
外径と該ポールピース内径との空間に、磁気的に
捕捉される磁性流体リングとからなる磁性流体シ
ールにおいて、 動作時において負圧側になる磁性流体リングが
覆つているシヤフトの円周方向の一部に切り欠き
を設けたことを特徴とする磁性流体シール装置。 ２ 上記シヤフトには上記磁性流体リングの位置
に対応して鍔が設けられ、該鍔の円周方向の一部
に切り欠きを設けた実用新案登録請求の範囲第１
項の磁性流体シール装置。[Claims for Utility Model Registration] 1. An annular permanent magnet that is magnetized in the axial direction, a ferromagnetic annular pole piece concentrically connected to both ends of the permanent magnet, and an annular permanent magnet that is magnetized in the axial direction. In a magnetic fluid seal consisting of a ferromagnetic shaft that penetrates through the core, and a magnetic fluid ring that is magnetically captured in the space between the outer diameter of the shaft and the inner diameter of the pole piece, the magnetic fluid becomes a negative pressure side during operation. A magnetic fluid sealing device characterized in that a notch is provided in a part of a shaft covered by a ring in a circumferential direction. 2. The shaft is provided with a flange corresponding to the position of the magnetic fluid ring, and a notch is provided in a part of the flange in the circumferential direction.
Section 2. Magnetic fluid seal device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985085952U JPH0222529Y2 (en) | 1985-06-07 | 1985-06-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985085952U JPH0222529Y2 (en) | 1985-06-07 | 1985-06-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61202759U true JPS61202759U (en) | 1986-12-19 |
| JPH0222529Y2 JPH0222529Y2 (en) | 1990-06-18 |
Family
ID=30636808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985085952U Expired JPH0222529Y2 (en) | 1985-06-07 | 1985-06-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0222529Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS583152A (en) * | 1981-06-29 | 1983-01-08 | Nec Corp | Floating head slider |
-
1985
- 1985-06-07 JP JP1985085952U patent/JPH0222529Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS583152A (en) * | 1981-06-29 | 1983-01-08 | Nec Corp | Floating head slider |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0222529Y2 (en) | 1990-06-18 |