JPS60114373U

JPS60114373U - sealing device

Info

Publication number: JPS60114373U
Application number: JP287484U
Authority: JP
Inventors: 田上　寛男
Original assignee: エヌオーケー株式会社
Priority date: 1984-01-12
Filing date: 1984-01-12
Publication date: 1985-08-02

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の密封装置の断面図、第２図は本考案の実
施例である密封装置の縦断面図、第３図は非接触シール
の一部拡大図を示すものである。１・・・・・・軸、２・・・・・・□ハウジング、３・
・・・・・密封手段、４・・・・・・非接触シール、５
・・・・・・接触シール、６　　　　　゛・・・・・・
微小隙間、７・・・・・・嵌合孔、８・・・・・・給気
孔、９・・・・・・排気孔、１０・・・・・・外周、１
１・・・・・・弾性リング、１２・・・・・・スペーサ
ケーシング、１３・・・・・・スペーサ、１４・・・・
・・固定手段、１５・・・・・・密封用高圧気体導入孔
、−１６・・・・・・密封用高圧気体導出孔、１７・・
・・・・導入口、１８・・・・・・導出口、Ａ・・・・
・・高圧側、Ｂ・・・・・・低圧側。FIG. 1 is a sectional view of a conventional sealing device, FIG. 2 is a longitudinal sectional view of a sealing device according to an embodiment of the present invention, and FIG. 3 is a partially enlarged view of a non-contact seal. 1...Axis, 2...□Housing, 3.
...Sealing means, 4...Non-contact seal, 5
・・・・・・Contact seal, 6゛・・・・・・
Minute gap, 7... Fitting hole, 8... Air supply hole, 9... Exhaust hole, 10... Outer circumference, 1
1...Elastic ring, 12...Spacer casing, 13...Spacer, 14...
...Fixing means, 15...Sealing high pressure gas introduction hole, -16...Sealing high pressure gas outlet hole, 17...
...Inlet, 18... Outlet, A...
...High pressure side, B...Low pressure side.

Claims

[Claims for Utility Model Registration] Sealing means 3 located between a housing 2 and a shaft 1 passing through the housing 2 and extending from a high pressure side A to a low pressure side B, a non-contact seal 4 installed on the high pressure side A; It consists of a contact seal 5 installed on the low pressure side B, and the non-contact seal 4 is connected to the shaft 1.
A small gap between. A fitting hole 7 is formed so as to form a hole 6, and an air supply hole 8 for allowing high pressure sealing gas to flow into the minute gap 6 and an exhaust hole 9 for exhausting the high pressure sealing gas from the minute gap 6 are provided. The air supply hole 8 communicates with a sealed high-pressure gas introduction hole 15 provided in the housing 2, the exhaust hole 9 communicates with a sealed high-pressure gas introduction hole 16 provided in the housing 2, and a A sealing device in which an elastic ring 11 sealing a gap formed between the housing 2 and the housing 2 is arranged so as to sealingly partition the air supply hole 8 and the exhaust hole 9.