JPH0439370U

JPH0439370U -

Info

Publication number: JPH0439370U
Application number: JP8014990U
Authority: JP
Priority date: 1990-07-27
Filing date: 1990-07-27
Publication date: 1992-04-03

Description

[Brief explanation of the drawing]

第１図は本考案缶圧シール機構の一実施例を示
す断面図、第２図は同じくシヤツトダウンシール
を機能させた状態の断面図、第３図は同じくメカ
ニカルシールを除去した状態の断面図である。２……缶体、４……内径フランジ、６……軸封
部ハウジング、８……シヤフト、１０……メカニ
カルシール、１８，２０……回転環、３０，３２
……固定環、４４……シヤツトダウンシール、４
６……筒状部、４８……リテーナ、５０，５２…
…Ｏリング、５４……Ｏリング（ガスケツト部）
、５８……スラストリング、６０……スタツドボ
ルト、６２……ナツト、６４……六角穴付きボル
ト（押付ボルト）、６８……環状突起部（嵌合部
）、Ａ……缶内、Ｂ……大気。 Figure 1 is a sectional view showing an embodiment of the can pressure seal mechanism of the present invention, Figure 2 is a sectional view of the same with the shutdown seal functioning, and Figure 3 is a sectional view of the same with the mechanical seal removed. It is. 2... Can body, 4... Inner diameter flange, 6... Shaft seal housing, 8... Shaft, 10... Mechanical seal, 18, 20... Rotating ring, 30, 32
... Fixed ring, 44 ... Shutdown seal, 4
6... Cylindrical part, 48... Retainer, 50, 52...
...O-ring, 54...O-ring (gasket part)
, 58... Thrust ring, 60... Stud bolt, 62... Nut, 64... Hexagon socket head bolt (pressing bolt), 68... Annular protrusion (fitting part), A... Inside the can, B... …atmosphere.

Claims

[Scope of utility model registration request]

A shaft seal housing arranged on the end face facing the atmosphere side of the inner diameter flange on the can body side, and a fixed ring airtightly attached to the housing are connected to a rotating ring airtightly attached to the shaft on the inner circumference of the shaft seal housing. It includes a mechanical seal that is in close contact with the can, and a shutdown seal that is placed inside the can of the mechanical seal. A retainer that is fitted so as to be movable in the axial direction and has a gasket portion on the end face opposite to the inner diameter flange, and a surface that passes through the inner diameter flange and the shaft seal housing in the axial direction and is airtightly partitioned from the inside of the can in the retainer at one end. A stud bolt is fixed to the shaft seal housing and has a nut screwed onto the other end that protrudes from the shaft seal housing, and a stud bolt that passes through the inner diameter flange and the shaft seal housing in the axial direction, is threaded with the inner diameter flange, and has one end in contact with the retainer. a pressing bolt in contact with the retainer, and a thrust ring airtightly fixed to the shaft in close opposition to the end face of the retainer on the side opposite to the inner diameter flange; A can pressure sealing mechanism characterized in that a fitting part is formed that faces each other in a radial direction in a state where the rings abut each other in the axial direction via a gasket part.