JPS6254098U

JPS6254098U -

Info

Publication number: JPS6254098U
Application number: JP14570185U
Authority: JP
Priority date: 1985-09-26
Filing date: 1985-09-26
Publication date: 1987-04-03

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る船尾管軸封装
置の半裁断面図、第２図は逆止弁の拡大断面図、
第３図は第２図における―線断面図、第４図
は従来例に係る船尾管軸封装置の半裁断面図であ
る。１……船舶本体、２……ケーシング、３……中
間リング、４，４′……アダプタリング、５……
アフトカバー、７……回転軸、８……プロペラ、
９……スリーブライナー、１０……バツクアツプ
リング部、１１……シールカバー、１２Ａ，１２
Ｂ，１２Ｃ，１２Ｄ，１２Ｅ……シールリング、
１３，２０……圧力供給配管、１３ａ，１３ｂ…
…分岐管、１４，２１……油タンク、１５，１６
，２２……チヤンバ、１８……逆止弁。 FIG. 1 is a half-cut sectional view of a stern tube shaft sealing device according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of a check valve.
FIG. 3 is a sectional view taken along the line -- in FIG. 2, and FIG. 4 is a half-cut sectional view of a conventional stern tube shaft sealing device. 1... Ship body, 2... Casing, 3... Intermediate ring, 4, 4'... Adapter ring, 5...
Aft cover, 7...Rotating shaft, 8...Propeller,
9...Sleeve liner, 10...Backup spring section, 11...Seal cover, 12A, 12
B, 12C, 12D, 12E... Seal ring,
13, 20...pressure supply piping, 13a, 13b...
... Branch pipe, 14, 21 ... Oil tank, 15, 16
, 22... Chamber, 18... Check valve.

Claims

[Scope of utility model registration request]

A stern tube shaft seal consisting of a plurality of seal rings fitted into the inner periphery of the shaft hole of fixed members on the ship body side, which are brought into close contact with a rotating member such as a sleeve liner, forming a seal for seawater and internal oil. In the device, the first to third seal rings from the seawater side are for seawater use, and the pressure supply piping extending from inside the ship is branched midway to the front and rear chambers of the third seal ring, and a connection opening is made to the front chamber. A stern tube shaft sealing device characterized in that a check valve is arranged in a branch pipe connected to the stern tube.