Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
MECHANICAL SEAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/142265
Kind Code:
A1
Abstract:
A mechanical seal device (1) has a seal case (30) which is mounted to a device body, a rotary seal ring (60) which is mounted to a rotating shaft (100), a stationary seal ring (50) which is disposed facing the rotary seal ring (60) in the axial direction, and a bellows (40) which is mounted between the stationary seal ring (50) and the seal case (30) in an axially extendable and retractable manner. The seal case (30) has formed therein a hydrostatic fluid supply hole (56) which supplies hydrostatic fluid to a hydrostatic fluid chamber (C) located on the inner peripheral surface side of the bellows (40). The stationary seal ring (50) has formed therein a communication hole which conducts the hydrostatic fluid within the hydrostatic fluid chamber (C) to the gap between the sealing surfaces of both the stationary seal ring (50) and the rotary seal ring (60). Sealed fluid is disposed on the outer peripheral surface side of the bellows (40).

Inventors:
TAKAHASHI, Hidekazu (1-12-15, Shiba-Daimon, Minato-k, Tokyo 87, 〒1058587, JP)
MURAKI, Ryoji (1-12-15, Shiba-Daimon, Minato-k, Tokyo 87, 〒1058587, JP)
Application Number:
JP2014/056763
Publication Date:
September 18, 2014
Filing Date:
March 13, 2014
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
EAGLE BURGMANN JAPAN CO., LTD. (12-15, Shiba-Daimon 1-chome Minato-k, Tokyo 87, 〒1058587, JP)
EAGLE INDUSTRY CO., LTD. (12-15, Shiba-Daimon 1-chome Minato-k, Tokyo 87, 〒1058587, JP)
International Classes:
F16J15/34; F16J3/04; F16J15/52
Domestic Patent References:
WO2006051702A12006-05-18
WO1999027281A11999-06-03
Foreign References:
JPS448930B
JPS3711308B1
JPS366306B1
JPS5983255U1984-06-05
JPS5121759U1976-02-17
JPS472955A
JPS57187966U1982-11-29
Other References:
See also references of EP 2891836A4
Attorney, Agent or Firm:
MAEDA & SUZUKI (2F Tokyodo Jinboucho 3rd Bldg, 1-17 Kandajinboucho 1-chome, Chiyoda-k, Tokyo 51, 〒1010051, JP)
Download PDF: