JPH0454367U

JPH0454367U -

Info

Publication number: JPH0454367U
Application number: JP9795390U
Authority: JP
Priority date: 1990-09-18
Filing date: 1990-09-18
Publication date: 1992-05-11

Description

[Brief explanation of the drawing]

第１図は本考案に係る静止型メカニカルシール
の一実施例を示す断面図、第２図は同じく他の実
施例を示す断面図、第３図および第４図はそれぞ
れ従来構造のメカニカルシールを例示した断面図
である。１０……ハウジング、１２……シヤフト、１４
……シールリング、１６……メイテイングリング
、１６ａ……外径筒状部、１８，３６……Ｏリン
グ、３０……カラー、３２……背面段差部、３４
……正面段差部、３８，４０，４２……キー溝、
４４……キー、４８……段差部、５０……スプリ
ツトリング、５４……スプリツトカラー、５６…
…スリーブ、５８……切欠、６０……ボルト。 Fig. 1 is a cross-sectional view showing one embodiment of a stationary mechanical seal according to the present invention, Fig. 2 is a cross-sectional view showing another embodiment, and Figs. 3 and 4 respectively show mechanical seals of conventional structure. It is an illustrated cross-sectional view. 10...Housing, 12...Shaft, 14
... Seal ring, 16 ... Mating ring, 16a ... Outer diameter cylindrical part, 18, 36 ... O ring, 30 ... Collar, 32 ... Rear step part, 34
...Front step, 38, 40, 42...Keyway,
44...Key, 48...Step, 50...Split ring, 54...Split collar, 56...
...sleeve, 58...notch, 60...bolt.

Claims

[Claims for Utility Model Registration] 1. A non-rotating seal ring that is airtightly and freely movable in the axial direction provided on the inner periphery of the housing and is biased in the axial direction by a spring on the back, and a mating ring that closely slides between end surfaces. is supported by a collar fixed to the shaft, and has a rear stepped portion formed on the inner circumferential surface of the outer cylindrical part of the mating ring that extends toward the anti-seal ring side, and on the outer circumferential surface of the collar. An O-ring is interposed between the rear stepped portion and the front stepped portion formed correspondingly, and is engaged in the circumferential direction on the outer peripheral surface of the shaft, spanning both the mating ring and the collar. A stationary mechanical seal characterized by having a key to 2. In the description of claim 1, an annular groove is formed on the outer peripheral surface of the shaft, and the key is sandwiched between one end of the annular groove and a stepped portion formed on the inner periphery of the front portion of the collar, A stationary mechanical seal that is equipped with a split ring that is divided into multiple parts in the circumferential direction. 3. In the description of claim 1, a sleeve is provided on the outer peripheral surface of the shaft and has a notch that engages with the key, and one end of which abuts against the front surface of the collar, and the other end of the sleeve is divided into a plurality of sections in the circumferential direction. A stationary mechanical seal that is fixed with a split collar that is tied into a ring with bolts.