Title:
CONTAMINATION-FREE CORROSION-PROOF SHAFT SEALING DEVICE
Document Type and Number:
Japanese Patent JP3839432
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a contamination-free corrosion-proof shaft sealing device capable of being properly used in a rotating apparatus on which the contamination is undesirable, such as a stirring machine used in a manufacturing process of medical supplied, chemicals and the like.
SOLUTION: In the normal operation, a seal gas is blown out from a gas passage 8 between sealed end faces as opposite end faces of carbon or aluminum stationary seal ring 4 and an aluminum rotating seal ring 6. In the sterilizing work, a sterilization gas for the seal gas is blown out between the seal end faces from the gas passage 8. A seal case part 31 kept into contact with the fluid in a machine is made out of ceramics, and the gas passage 8 is formed on the seal case part 33 excluding the seal case part 31. A cover 101 of a jacket structure is mounted on the seal case 3, and an area surrounded by the heat insulating cover 101 is kept at 121°C or higher by introducing the steam 191 to an internal space 106 of the cover 101 in the sterilizing work.
Inventors:
Suetaka Nakao
Moto Yamamoto
Makoto Ueda
Moto Yamamoto
Makoto Ueda
Application Number:
JP2003371122A
Publication Date:
November 01, 2006
Filing Date:
October 30, 2003
Export Citation:
Assignee:
Shinko Environmental Solution Co., Ltd.
Nippon Pillar Industry Co., Ltd.
Nippon Pillar Industry Co., Ltd.
International Classes:
F16J15/34; F16J15/40; (IPC1-7): F16J15/40; F16J15/34
Domestic Patent References:
| JP11336910A | ||||
| JP2001056058A | ||||
| JP11287332A | ||||
| JP2000161501A | ||||
| JP5003743U | ||||
| JP2001289331A | ||||
| JP2003130234A | ||||
| JP5079568A | ||||
| JP60054866U | ||||
| JP52090682A | ||||
| JP62269643A |
Attorney, Agent or Firm:
Hisami Miki
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