JPH043167U

JPH043167U -

Info

Publication number: JPH043167U
Application number: JP4515790U
Authority: JP
Priority date: 1990-04-25
Filing date: 1990-04-25
Publication date: 1992-01-13

Description

[Brief explanation of the drawing]

第１図乃至第１５図は本考案の各実施例に係る
磁性流体シールを示すもので、第１図は第１実施
例の要部縦断面図、第２図は第２実施例の要部縦
断面図、第３図は第３実施例の要部縦断面図、第
４図ａは第４実施例の要部縦断面図、第４図ｂは
同図ａの側面図、第５図は第５実施例の要部縦断
面図、第６図は第６実施例の要部縦断面図、第７
図は第７実施例の要部縦断面図、第８図は第８実
施例の要部縦断面図、第９図は第９実施例の要部
縦断面図、第１０図は第１０実施例の要部縦断面
図、第１１図は第１１実施例の要部縦断面図、第
１２図は第１２実施例の要部縦断面図、第１３図
は第１３実施例の要部縦断面図、第１４図は第１
４実施例の要部縦断面図、第１５図は第１４図の
部分斜視図、第１６図は従来の磁性流体シールの
要部縦断面図、第１７図は第１６図の磁性流体が
飛散した状態の要部縦断面図、第１８図は他の従
来の磁性流体シールの磁性流体の飛散状態を示す
要部縦断面図である。符号の説明、１……磁性流体シール、２，２２
……磁気ユニツト、３……磁性流体、４……ハウ
ジング、４１……軸孔、５……シヤフト、５１，
５２……大径、小径部、６……磁力源、６１……
半径方、７，８……第１、第２ヨーク、６１，７
１，８１……半径方向隙間、１０……端面部、１
１……軸方向隙間、１２……環状部材、１３……
段凸部、１４……歯、１５……ねじ溝、１６……
冷却部、２０……第２端面部、Ｈ……高圧側、Ｌ
……低圧側。 1 to 15 show magnetic fluid seals according to each embodiment of the present invention. FIG. 1 is a vertical sectional view of the main part of the first embodiment, and FIG. 2 is a main part of the second embodiment. 3 is a longitudinal sectional view of the main part of the third embodiment, FIG. 4a is a longitudinal sectional view of the main part of the fourth embodiment, FIG. 4b is a side view of the same Fig. 5 is a vertical cross-sectional view of the main part of the fifth embodiment, FIG. 6 is a vertical cross-sectional view of the main part of the sixth embodiment, and FIG.
The figure is a longitudinal sectional view of the main part of the seventh embodiment, FIG. 8 is a longitudinal sectional view of the main part of the eighth embodiment, FIG. 9 is a longitudinal sectional view of the main part of the ninth embodiment, and FIG. FIG. 11 is a longitudinal sectional view of the essential parts of the 11th embodiment, FIG. 12 is a longitudinal sectional view of the essential parts of the 12th embodiment, and FIG. 13 is a longitudinal sectional view of the essential parts of the 13th embodiment. Front view, Figure 14 is the first
15 is a partial perspective view of FIG. 14, FIG. 16 is a vertical sectional view of the main part of a conventional magnetic fluid seal, and FIG. 17 is a fragmentary view of the magnetic fluid shown in FIG. 16. FIG. 18 is a vertical cross-sectional view of a main part of another conventional magnetic fluid seal showing a state in which the magnetic fluid is scattered. Explanation of symbols, 1...Magnetic fluid seal, 2, 22
... Magnetic unit, 3 ... Magnetic fluid, 4 ... Housing, 41 ... Shaft hole, 5 ... Shaft, 51,
52... Large diameter, small diameter part, 6... Magnetic force source, 61...
Radial direction, 7, 8...First, second yoke, 61, 7
1, 81...Radial gap, 10...End face portion, 1
1... Axial gap, 12... Annular member, 13...
Stepped convex portion, 14...teeth, 15...screw groove, 16...
Cooling part, 20...Second end face part, H...High pressure side, L
...low pressure side.

Claims

[Claims for Utility Model Registration] Two components that are assembled concentrically and relatively rotatably with each other
It seals between members, and has a magnetic unit equipped with an annular magnetic force source attached to one of the two members, and a minute radial direction formed between the magnetic unit and the other member. In a magnetic fluid seal that magnetically seals and holds a magnetic fluid in a gap, the other member facing the magnetic unit with a radial gap therebetween is formed with an end face perpendicular to the axial direction, and the end face part and A magnetic fluid seal characterized in that a minute axial gap is formed between the magnetic unit and the magnetic unit, and an outer diameter side end of the axial gap is communicated with the radial gap.