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Title:
SHAFT SEALING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/141331
Kind Code:
A1
Abstract:
This shaft sealing device is provided with a flow path tube, a rotating unit, a valve, a shaft-side seal unit and a flow path-side seal unit. The flow path tube is provided with a gas flow path therein, and has a through-hole that allows communication between the inside of the flow path and the outside of the flow path. The rotating unit is inserted into and held in the through-hole, and rotates on a pre-configured rotation shaft. With rotation of the rotation unit, the valve opens and closes at least part of the flow path. The shaft-side seal unit is provided protruding along the outer periphery of the rotating unit. The flow path-side seal unit is arranged between the flow path tube and the rotating unit, and makes line contact with the rotation-side seal unit, surrounding the rotation unit.

Inventors:
ISHIKAWA, Hiromi (1, Aza-ochaya, Hashime-cho, Okazaki-sh, Aichi 58, 〒4448558, JP)
TAKEMOTO, Naohiro (1, Aza-ochaya, Hashime-cho, Okazaki-sh, Aichi 58, 〒4448558, JP)
Application Number:
JP2016/054336
Publication Date:
August 24, 2017
Filing Date:
February 15, 2016
Export Citation:
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Assignee:
FUTABA INDUSTRIAL CO., LTD. (1 Aza-ochaya, Hashime-cho Okazaki-sh, Aichi 58, 〒4448558, JP)
International Classes:
F16K41/08; F16K1/20
Foreign References:
JP2013241966A2013-12-05
JPS6174642U1986-05-20
Attorney, Agent or Firm:
NAGOYA INTERNATIONAL PATENT FIRM (Meishin Bldg, 20-19 Nishiki 1-chome, Naka-ku, Nagoya-sh, Aichi 03, 〒4600003, JP)
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