JPH0328367U

JPH0328367U -

Info

Publication number: JPH0328367U
Application number: JP8841289U
Authority: JP
Priority date: 1989-07-27
Filing date: 1989-07-27
Publication date: 1991-03-20

Description

[Brief explanation of the drawing]

第１図は本考案に係るメカニカルシールの一実
施例を示す要部概略的断面図である。１…機体のケーシング、３…フランジ、４…固
定摺接環（第１のシールリング）、５…回転軸、
７，８…スリーブ、８ａ…ネジ切り部、９…シー
ルカバー、１０…回転摺接環（第２のシールリン
グ）、１１…空洞部、１３…注水口、１４…オイ
ルシール、１５…バツフルスリーブ、１６…連通
孔、１７，１８…循環経路、１９…切欠き部、ａ
…摺接部、ｗ…クウエンチング液。 FIG. 1 is a schematic cross-sectional view of essential parts showing an embodiment of a mechanical seal according to the present invention. 1... Casing of the fuselage, 3... Flange, 4... Fixed sliding ring (first seal ring), 5... Rotating shaft,
7, 8...Sleeve, 8a...Threaded part, 9...Seal cover, 10...Rotating sliding ring (second seal ring), 11...Cavity part, 13...Water inlet, 14...Oil seal, 15...Boutful Sleeve, 16...Communication hole, 17, 18...Circulation path, 19...Notch, a
...Sliding contact part, w...Quenching liquid.

Claims

[Scope of utility model registration request]

A fixed sliding contact ring provided on the casing side of the fuselage via a flange, and a rotating sliding contact ring provided on the rotating shaft side via a seal cover integrated with the sleeve are arranged in sliding contact with each other, and the inside of the flange A cavity is formed in the cavity, and quenching liquid is injected into this cavity and supplied to the sliding contact area between the stationary ring and the rotating ring, while an oil seal is brought into sliding contact with the outer periphery of the sleeve on the flange side to seal the shaft. In the mechanical seal, the outer periphery of the sleeve is threaded, and a buttful sleeve is interposed between the outer periphery of the sleeve and the inner periphery of both sliding rings to form a circulation path for the quenching liquid. At the same time, an impeller-shaped notch is provided on the oil seal side end surface of the sleeve, so that the quenching liquid is self-circulated by the rotation action of the threaded part and the notch due to rotation of the rotating shaft. A mechanical seal characterized by the following structure.