JPH0398375U

JPH0398375U -

Info

Publication number: JPH0398375U
Application number: JP743990U
Authority: JP
Priority date: 1990-01-29
Filing date: 1990-01-29
Publication date: 1991-10-11
Anticipated expiration: 2004-08-24
Also published as: JPH0632527Y2

Description

[Brief explanation of drawings]

第１図は本考案に係るメカニカルシールの第１
実施例を示す要部拡大断面図、第２図は同じく機
体への組付け状態の全体構成を示す断面図、第３
図は本考案に係るメカニカルシールの第２実施例
を示す要部拡大断面図、第４図は本考案に係るメ
カニカルシールの第２実施例を示す要部拡大断面
図、第５図及び第６図は従来のメカニカルシール
の機体への組付け状態をそれぞれ示す要部断面図
である。１……機体、２……回転軸、４……シールカバ
ー、５……バツフルスリーブ、５ａ……先端部、
５０……立上り部、６……金属ベローズ、７……
リテーナ、７ａ……内周、８……メイテイングリ
ング、８ａ……内径部、８１……切欠溝、１２…
…シールリング、１４……コイルスプリング、１
５……パツキン、１６……ダンパ。 Figure 1 shows the first mechanical seal according to the present invention.
FIG. 2 is an enlarged cross-sectional view of the main parts showing the embodiment; FIG.
The figure is an enlarged sectional view of the main part showing the second embodiment of the mechanical seal according to the present invention, FIG. 4 is an enlarged sectional view of the main part showing the second embodiment of the mechanical seal according to the invention, and FIGS. The figures are cross-sectional views of main parts showing how a conventional mechanical seal is assembled to an airframe. 1... Body, 2... Rotating shaft, 4... Seal cover, 5... Buttful sleeve, 5a... Tip part,
50... Rising part, 6... Metal bellows, 7...
Retainer, 7a... Inner periphery, 8... Mating ring, 8a... Inner diameter part, 81... Notch groove, 12...
... Seal ring, 14 ... Coil spring, 1
5...Patsukin, 16...Dampa.

Claims

[Scope of claim for utility model registration] 1. On the outer periphery of the rotating shaft inserted into the inner diameter of the machine body,
A buffful sleeve fixed to the seal cover attached to the fuselage side is arranged, and a stationary side seal part consisting of a retainer backed up with a metal bellows and a mating ring is assembled on the outer periphery of the buffful sleeve. , a rotating side seal part consisting of a seal ring assembled on the rotating shaft side is brought into sliding contact with the mating ring of the stationary side seal part, and a coil spring is interposed inside the metal bellows. In the seal, the retainer and mating ring of the stationary side seal portion are assembled so as to be separable from each other, and the tip of the buttful sleeve faces the inner diameter side of the mating ring, and the inner diameter of the mating ring A rising portion formed at the distal end of the buff-full sleeve that is higher than the inner diameter of the retainer is engaged with a notch groove formed in the buff-full sleeve to prevent rotation. A mechanical seal characterized by having a damper installed between it. 2. The mechanical seal according to claim 1, wherein an upright piece is integrally formed at the tip of the buttful sleeve by caulking to form the upright portion. 3 Provide a keyway at the tip of the full sleeve,
2. The mechanical seal according to claim 1, wherein a key member is implanted in the keyway to form a rising portion. 4. The tip of the buff-full sleeve is formed into an L-shaped flange shape to form a rising part, and a dowel pin that engages with the notched groove formed in the inner diameter part of the mating ring is implanted on the non-sliding surface side of this rising part. The mechanical seal according to claim 1, characterized in that: