JPH0182999U

JPH0182999U -

Info

Publication number: JPH0182999U
Application number: JP1987179163U
Authority: JP
Priority date: 1987-11-25
Filing date: 1987-11-25
Publication date: 1989-06-02

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示すもので、第１図
は従来の船尾管軸封装置の半裁断面図、第２図は
本考案にかかる一実施例の半裁断面図、第３図は
同要部立体図、第４図は圧力関係を示す模式図で
ある。１……軸ライナー、２……円周シーリング、３
……下部シール部材、４……上部シール部材、５
……上下部シール部材のテーパー部、６ａ……円
周方向スプリンギ、７……リツプシーリング、９
〜１２……ハウジング部材、１５……加圧流体供
給孔、１６……大気開放通気孔、１７……環状空
間室、１８……圧力バランス溝、１９……上下部
シール部材合口、３１……下部シール部材の角柱
状突起、３２……下部シール部材の案内面。 The drawings show one embodiment of the present invention; FIG. 1 is a half-cut sectional view of a conventional stern tube shaft sealing device, FIG. 2 is a half-cut sectional view of an embodiment of the present invention, and FIG. A three-dimensional view of the main part, and FIG. 4 is a schematic diagram showing the pressure relationship. 1...Shaft liner, 2...Circumferential sealing, 3
...Lower seal member, 4...Upper seal member, 5
...Tapered portion of upper and lower seal members, 6a...Circumferential spring gear, 7...Lip sealing, 9
~12... Housing member, 15... Pressurized fluid supply hole, 16... Air opening vent, 17... Annular space chamber, 18... Pressure balance groove, 19... Upper and lower seal member joint, 31... prismatic projection of the lower seal member, 32... guide surface of the lower seal member;

Claims

[Scope of Claim for Utility Model Registration] (1) In a stern tube shaft sealing device consisting of a plurality of lip seals that are in sliding contact with the propeller shaft liner and a housing member that holds the lip seals and is fixed to the stern member of the hull and surrounds the propeller shaft. , a lower seal member 3 is slidably inserted into the propeller shaft liner 1 in the intermediate annular space between the lip seal closest to the stern and the lip seal closest to the bow, and an upper seal member is attached to the tapered outer circumference of the seal member. Insert and combine the inner circumferential taper parts of 4 to form a circumferential seal ring 2.
, and the stern side side surface of the upper seal member 4 is attached to the inner wall surface of the housing member 10.
The bow-side side surface of the lower seal member 3 is brought into contact with the inner wall surface of the housing member 1, and a pressurized fluid supply hole 15 is provided that communicates the housing members 10, 11, and 12 and opens at the inner circumference of the housing member 10. Stern tube shaft sealing device. (2) The stern tube shaft sealing device according to claim 1, wherein the lower seal member and the upper seal member are made of a highly elastic polymeric material. (3) The stern tube shaft sealing device according to claim 1, wherein the lower sealing member has a split shape with one abutment. (4) The stern tube shaft sealing device according to claim 1, wherein the lower sealing member is provided with a pressure balance groove in its inner peripheral portion. (5) The stern tube shaft sealing device according to claim 1, wherein the upper sealing member is a split ring member.