JPS63104765U

JPS63104765U -

Info

Publication number: JPS63104765U
Application number: JP19863586U
Authority: JP
Priority date: 1986-12-26
Filing date: 1986-12-26
Publication date: 1988-07-07

Description

[Brief explanation of drawings]

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、第２図は第１図
―線における要部断面図、第３図は従来のメカ
ニカルシールを示す要部概略的断面図である。１……機体（ハウジング）、２……回転軸、４
……回転摺接環（メイテイングリング）、５……
リテーナ、６……Ｏリング、７……セツトスクリ
ユー、８……カラー、１０……ノツクピン、１４
……固定摺接環（シールリング）、１５……コイ
ルスプリング、２０……空気抜き孔、Ａ……空間
部。 Fig. 1 is a schematic sectional view of the main part showing one embodiment of the mechanical seal according to the present invention, Fig. 2 is a sectional view of the main part along the line shown in Fig. 1, and Fig. 3 is the main part showing the conventional mechanical seal. It is a schematic cross-sectional view. 1... Body (housing), 2... Rotating shaft, 4
...Rotating sliding ring (mating ring), 5...
Retainer, 6...O ring, 7...Set screw, 8...Collar, 10...Knock pin, 14
... Fixed sliding ring (seal ring), 15 ... Coil spring, 20 ... Air vent hole, A ... Space part.

Claims

[Scope of utility model registration request]

A rotating sliding ring held by a retainer is arranged on the rotating shaft side, and the back side of this retainer holds a collar via an O-ring and a knock pin, and the collar is fixed to the rotating shaft with a set screw, A mechanical seal having a seal structure in which a fixed sliding ring held on a housing side and pressed by a biasing force of a coil spring is brought into sliding contact with the rotating sliding ring, the retainer holding the rotating sliding ring; A mechanical seal characterized in that an air vent hole is provided in communication with a space surrounded by a collar that holds the retainer and the O-ring.