Title:
COMBINED SEAL OF MAGNETIC FLUID AND LIP SEAL
Document Type and Number:
WIPO Patent Application WO/2019/214194
Kind Code:
A1
Abstract:
Disclosed is a combined seal of a magnetic fluid and a lip seal, the combined seal comprising a metal shaft (7) mounted on a housing (6). A metal pole shoe (1) for sealing is provided between the metal shaft (7) and the housing (6); a permanent magnet (2) is mounted in the middle of the metal pole shoe (1); a piece of lip-shaped magnetic rubber (3) is fixed to a contact on the side of a main sealing surface of the metal pole shoe (1) that is close to the metal shaft (7); the piece of lip-shaped magnetic rubber (3) matches the metal shaft (7) to realize the sealing of a magnetic fluid around the piece of lip-shaped magnetic rubber (3); and a groove is provided between the metal pole shoe (1) and the housing (6), an O-shaped sealing ring (5) is arranged in the groove, and the O-shaped sealing ring (5) seals the metal pole shoe (1) and the housing (6).
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Inventors:
GUO FEI (CN)
JIANG BINGQI (CN)
JIA XIAOHONG (CN)
LI DECAI (CN)
WANG ZIXI (CN)
LI YONGJIAN (CN)
HUANG WEIFENG (CN)
WANG YUMING (CN)
JIANG BINGQI (CN)
JIA XIAOHONG (CN)
LI DECAI (CN)
WANG ZIXI (CN)
LI YONGJIAN (CN)
HUANG WEIFENG (CN)
WANG YUMING (CN)
Application Number:
PCT/CN2018/114447
Publication Date:
November 14, 2019
Filing Date:
November 08, 2018
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
International Classes:
F16J15/43; F16J15/3208; F16J15/3224
Foreign References:
| CN108612850A | 2018-10-02 | |||
| CN107893854A | 2018-04-10 | |||
| CN107830178A | 2018-03-23 | |||
| CN107906204A | 2018-04-13 | |||
| US4841408A | 1989-06-20 |
Attorney, Agent or Firm:
XI'AN CYDA INTELLECTUAL PROPERTY AGENCY et al. (CN)
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