Title:
軸封装置とこれを用いた弁構造
Document Type and Number:
Japanese Patent JP4394749
Kind Code:
B2
Abstract:
A shaft sealing device with a simple internal structure switches a sealing state and an unsealing state of a fluid, with high sealing performance maintained, because of no abrasion accompanying the movement of a sealing material or a sealing member, thereby enabling feeding a fluid at a predetermined flow rate, and adjusts the expanding rate of the sealing material with the quantity of an external electric signal and accordingly adjusts the contact face pressure to enable controlling the amount of leakage of the fluid highly precisely, so that it can be used for all applications. The shaft sealing device includes a shaft sealing body (20) formed of a macromolecular material and made expansible or contractible, or deformable, through external electrostimuli applied to a shaft sealing portion (15) disposed in a device body (10), and flow passages (13 and 14) disposed in the shaft sealing portion (15) for feeding the fluid leaked due to the expansion or contraction, or the deformation, of the shaft sealing body (20).
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Inventors:
Kazuhiro Aoki
Mountain Saki Tomoya
Chikashi Gomi
Mountain Saki Tomoya
Chikashi Gomi
Application Number:
JP2009520539A
Publication Date:
January 06, 2010
Filing Date:
June 19, 2008
Export Citation:
Assignee:
KITZ CORPORATION
International Classes:
F16J15/10; F16J15/02; F16J15/06; F16J15/16; F16J15/20; F16K31/02; H02N2/00; H02N11/00
Domestic Patent References:
| JP4362375A | ||||
| JP2007120737A | ||||
| JP2140072U | ||||
| JP3501216B2 |
Attorney, Agent or Firm:
Tetsuo Kobayashi