JPH01111875U

JPH01111875U -

Info

Publication number: JPH01111875U
Application number: JP620888U
Authority: JP
Priority date: 1988-01-21
Filing date: 1988-01-21
Publication date: 1989-07-27

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す部分縦断面図
、第２図は第１図の平面一体型バツクメタルを示
す縦断面図、第３図は第２図の正面図、第４図は
第１図の変形例の平面上下２分割型バツクメタル
を示す縦断面図、第５図は第４図の正面図、第６
図は第１図の異なる変形例を示す部分縦断面図、
第７図は第６図のラビリンス上下２分割型バツク
メタルを示す縦断面図、第８図は第７図の正面図
である。第９図は公知の船尾管シール装置を示す
縦断面図である。１，１ａ……バツクメタル付設型嵌込みリング
、２……ボルト、３……平面一体型バツクメタル
、３ａ……平面上下２分割型バツクメタル、３ｂ
……ラビリンス上下２分割型バツクメタル、０５
……推進器、０６……シールライナー、０７……
推進器軸、０８……船尾管、０９……ボルト、０
１０……船尾管側ケーシング、０１１，０１２，
０１３……ボルト、０１４……中間リング、０１
５……海水側ケーシング、０１６……リツプシー
ル、０１７……油圧ケーシング、０１８……リツ
プシール、０１９，０２０……シールリング、０
２１……スプリング、０２２……リングスプリン
グ、０２３……油室、０２４……空気供給口、０
２５……空気抜口。 Fig. 1 is a partial vertical sectional view showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional view showing the planar integrated back metal of Fig. 1, Fig. 3 is a front view of Fig. 2, and Fig. 4 is a longitudinal sectional view showing an embodiment of the present invention. Fig. 5 is a longitudinal cross-sectional view showing a modified example of the planar upper and lower bipartite type back metal; Fig. 5 is a front view of Fig. 4;
The figure is a partial vertical sectional view showing a different modification of FIG.
7 is a longitudinal sectional view showing the labyrinth upper and lower bipartite type back metal shown in FIG. 6, and FIG. 8 is a front view of FIG. 7. FIG. 9 is a longitudinal sectional view showing a known stern tube sealing device. 1, 1a...Back metal attached type fitting ring, 2...Bolt, 3...Flat integrated back metal, 3a...Flat upper and lower split type back metal, 3b
... Labyrinth upper and lower 2-piece back metal, 05
...Propulsion unit, 06...Seal liner, 07...
Propulsion shaft, 08... Stern tube, 09... Bolt, 0
10... Stern tube side casing, 011,012,
013... Bolt, 014... Intermediate ring, 01
5... Seawater side casing, 016... Lip seal, 017... Hydraulic casing, 018... Lip seal, 019,020... Seal ring, 0
21...Spring, 022...Ring spring, 023...Oil chamber, 024...Air supply port, 0
25...Air vent.

Claims

[Scope of utility model registration request]

A stern tube side casing, an intermediate ring, a fitting ring, and a seawater side casing are sequentially fixed coaxially to the rear end of the stern tube via bolts, and the stern tube side casing and the fitting ring are fixed to the inside of the intermediate ring. In a stern tube sealing device in which a pair of front and rear seal rings are inserted in pressure contact with the rings, a ring-shaped back metal is removably attached to the rear surface of the stern tube side casing and is in pressure contact with the opposing seal ring; A stern tube sealing device characterized by comprising a ring-shaped back metal that is removably attached to the front side of a containment ring and is in pressure contact with an opposing seal ring.