JPH0398370U

JPH0398370U -

Info

Publication number: JPH0398370U
Application number: JP794290U
Authority: JP
Priority date: 1990-01-29
Filing date: 1990-01-29
Publication date: 1991-10-11

Description

【図面の簡単な説明】[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
施例を示す半截断面図、第２図はその要部を取出
して示す断面図であり、第３図は従来のメカニカ
ルシールを示す半截断面図である。１……第１固定密封環（高圧側密封要素）、２
……第２固定密封環（低圧側密封要素）、３……
第１ベローズ（高圧側密封要素）、４……第２ベ
ローズ（低圧側密封要素）、５……第１回転密封
環（高圧側密封要素）、６……第２回転密封環（
低圧側密封要素）、７……コイルスプリング、８
……油室、９……インペラ室、１０……モータ室
、１２……回転軸、１４……係止リング。 Fig. 1 is a half-cut sectional view showing an embodiment of the mechanical seal according to the present invention, Fig. 2 is a sectional view showing the main parts thereof, and Fig. 3 is a half-cut sectional view showing a conventional mechanical seal. be. 1...First fixed sealing ring (high pressure side sealing element), 2
...Second fixed sealing ring (low pressure side sealing element), 3...
First bellows (high pressure side sealing element), 4... Second bellows (low pressure side sealing element), 5... First rotating sealing ring (high pressure side sealing element), 6... Second rotating sealing ring (
low pressure side sealing element), 7... coil spring, 8
... Oil chamber, 9 ... Impeller chamber, 10 ... Motor chamber, 12 ... Rotating shaft, 14 ... Locking ring.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

各々、基端部を回転軸に嵌着したベローズと該
ベローズの先端部に取着した回転密封環と該回転
密封環に対向配置した固定密封環とを具備する高
圧側密封要素及び低圧側密封要素を、両ベローズ
の基端部が相対向する状態で並列配置させてある
メカニカルシールにおいて、高圧側密封要素にお
けるベローズの基端部と回転軸との間に、低圧側
密封要素方向に漸次拡径する断面楔状の弾性材製
の係止リングを食込ませてあることを特徴とする
メニカルシール。 A high-pressure side sealing element and a low-pressure side sealing element, each comprising a bellows whose base end is fitted onto a rotating shaft, a rotating sealing ring attached to the distal end of the bellows, and a stationary sealing ring disposed opposite to the rotating sealing ring. In a mechanical seal in which elements are arranged in parallel with the base end portions of both bellows facing each other, the element is gradually expanded in the direction of the low pressure side sealing element between the base end of the bellows on the high pressure side sealing element and the rotating shaft. A menical seal characterized by a locking ring made of an elastic material having a wedge-shaped cross section.