MECHANICAL SEAL - EAGLE IND CO LTD

Title:

MECHANICAL SEAL

Document Type and Number:

WIPO Patent Application WO/2013/021839

Kind Code:

A1

Abstract:

[Problem] To provide a mechanical seal which does not leak when at rest, operates with fluid lubrication during rotation including the beginning of rotation while preventing leaking, and enables both sealing and lubrication. [Solution] A mechanical seal characterized in that multiple sealed fluid accommodating blocks which are separated in the circumferential direction are formed on the sliding surface of a fixed ring or the sliding surface of a rotating ring so as to communicate with a sealed fluid accommodating space, with pumping parts that produce a pumping action due to the relative rotational sliding of the fixed ring and the rotating ring being formed at the bottom of the multiple sealed fluid accommodating blocks, and with the pumping parts formed at the bottom of the multiple sealed fluid accommodating blocks including suction pumping parts which move the sealed fluid in the suction direction and discharge pumping parts which move the sealed fluid in the discharge direction.

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Inventors:

OSADA HARUHIRO (JP)
INOUE HIDEYUKI (JP)
HOSOE TAKESHI (JP)
MORIMIYA DAISUKE (JP)
TOKUNAGA YUICHIRO (JP)
NEGISHI YUTA (JP)

Application Number:

PCT/JP2012/069144

Publication Date:

February 14, 2013

Filing Date:

July 27, 2012

Export Citation:

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Assignee:

EAGLE IND CO LTD (JP)
OSADA HARUHIRO (JP)
INOUE HIDEYUKI (JP)
HOSOE TAKESHI (JP)
MORIMIYA DAISUKE (JP)
TOKUNAGA YUICHIRO (JP)
NEGISHI YUTA (JP)

International Classes:

F16J15/34

Domestic Patent References:

WO2009087995A1

2009-07-16

Foreign References:

JPH0735242A	1995-02-07
JP2009250378A	2009-10-29
JP2009014183A	2009-01-22
JPS63118460U	1988-07-30
JPH0473A	1992-01-06
JP2004183810A	2004-07-02
JPH01133572U	1989-09-12
JPS61184165U	1986-11-17

Other References: