Title:
SEALING DEVICE AND VALVE
Document Type and Number:
WIPO Patent Application WO/2010/083696
Kind Code:
A1
Abstract:
A sealing device includes: a first component (20), the first component (20) being formed with a hole; a second component (3) installed in the hole of the first component (20), the second component (3) being formed with a first shaft shoulder (35) and a second shaft shoulder (36) and with at least one annular groove (33) on its outer peripheral surface; an O-ring (1) disposed in the annular groove (33); a first guide ring (2) made of a material with elasticity and sealing function and a second guide ring (2); and a first stop (40) and a second stop (4). The second component (3) is axially located relative to the first component (20) by means of the first stop (40) and the second stop (4). The first guide ring (2) is disposed between the first shaft shoulder (35) and the first stop (40), and the second guide ring (2) is disposed between the second shaft shoulder (36) and the second stop (4). An annular surface of the first shaft shoulder (35) is a truncated cone-shaped surface, and an axial end face of the first guide ring (2) opposite to the first shaft shoulder (35) is also formed as a truncated cone-shaped surface, so that the first guide ring (2) bears an axial pressure under an assembled state, produces a pre-determined amount of compression and tends to slide radially outwardly. A valve comprises such a sealing device.
Inventors:
WANG XIN (CN)
ZHAO BIN (CN)
HUANG BINGYUAN (CN)
HE JIA (CN)
ZHAO BIN (CN)
HUANG BINGYUAN (CN)
HE JIA (CN)
Application Number:
PCT/CN2009/074914
Publication Date:
July 29, 2010
Filing Date:
November 12, 2009
Export Citation:
Assignee:
DANFOSS TIANJIN LTD (CN)
WANG XIN (CN)
ZHAO BIN (CN)
HUANG BINGYUAN (CN)
HE JIA (CN)
WANG XIN (CN)
ZHAO BIN (CN)
HUANG BINGYUAN (CN)
HE JIA (CN)
International Classes:
F16K41/04; F16K5/06; F16K41/02
Foreign References:
| DE3941153A1 | 1991-04-25 | |||
| US20010032951A1 | 2001-10-25 | |||
| US3359999A | 1967-12-26 | |||
| JPH09144907A | 1997-06-03 | |||
| CN101476623A | 2009-07-08 | |||
| US20090079138A1 | 2009-03-26 | |||
| CN201373129Y | 2009-12-30 | |||
| CN2408316Y | 2000-11-29 | |||
| GB1181860A | 1970-02-18 | |||
| CN2075286U | 1991-04-17 | |||
| CN2420471Y | 2001-02-21 |
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (Huibin BuildingNo.8 Beichen Dong Street, Chaoyang District, Beijing 1, CN)
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