FLUSHING MECHANISM

WIPO Patent Application WO/2012/019537

A1

A flushing mechanism (100) comprises a tank body (1) with a water outlet arranged about an axis on the bottom thereof, a guide bar axially fixed with respect to the tank body (1) along the axis, a first piston (4) sealed at the same time against a cylindrical inner surface and the guide bar along the direction of the axis, a first piston loading spring (5) fitted in an upper chamber around the guide bar, a second piston (8) hermetically sliding on the guide bar along the direction of the axis and being located between the first piston (4) and the bottom of the tank body, a second piston loading spring (9) fitted around the guide bar, and a control valve (15); wherein an annular projection (4-5) provided at the lower end of the first piston (4) is able to press a large seal ring (8-3) of a sealing assembly for the second piston into a pre-pressed bent deformation while the first piston (4) is sliding downwards, thus the large seal ring (8-3) of the sealing assembly for the second piston performs the sealing prior to a small ring (8-4) thereof due to the pre-pressed bent deformation, such that the water inside an outer annular lower chamber (8-5) can be discharged from the water outlet smoothly.

LI FEIYU (CN)
LI JIAN (CN)
HONG LAICONG (CN)

PCT/CN2011/078191

February 16, 2012

August 10, 2011

Click for automatic bibliography generation  

LI FEIYU (CN)
LI JIAN (CN)
HONG LAICONG (CN)

F16K17/04; F16K3/00

WO2002046540A1

2002-06-13

CN101892696A	2010-11-24
CN101906805A	2010-12-08
CN101914940A	2010-12-15
CN101555700A	2009-10-14
CN201236375Y	2009-05-13
CN201106202Y	2008-08-27
DE19633178A1	1998-02-19
CN200810091185A	2008-04-09

SHOUCHUANG JUNHE PATENT AGENT CO., LTD. XIAMEN (CN)
厦门市首创君合专利事务所有限公司 (CN)

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