EP 0842690 B8 20020918 - FILTERING DEVICE USING FLUSH WASHING
Title (en)
FILTERING DEVICE USING FLUSH WASHING
Title (de)
FILTERVORRICHTUNG MIT SPÜLWÄSCHE
Title (fr)
DISPOSITIF DE FILTRAGE A CHASSE
Publication
Application
Priority
- JP 9601724 W 19960620
- JP 19938895 A 19950804
Abstract (en)
[origin: US6033558A] PCT No. PCT/JP96/01724 Sec. 371 Date Feb. 3, 1998 Sec. 102(e) Date Feb. 3, 1998 PCT Filed Jun. 20, 1996 PCT Pub. No. WO97/05939 PCT Pub. Date Feb. 20, 1997A self-gush-cleaning filter device comprises a filter casing (1) provided with an inlet passage (a) and an outlet passage (d), a screen (11) disposed within the filter casing (1) so as to slide along the inner surface of the filter casing (1) in the flowing direction of a fluid, a foreign matter ejecting opening (15) being formed between the screen (11) and the inlet passage (a). A drive shaft (4) for driving the screen (11), a screen driving unit (3) for driving the drive shaft (4) so as to move the screen (11) quickly in a downstream direction in which the fluid flows from the inlet passage (a) toward the outlet passage (d) and to move the screen slowly in an upstream direction. An outlet shutoff valve (14) is disposed in the outlet passage (d) of the filter casing (1). The screen driving unit (3) is actuated after closing the outlet shutoff valve (14) to move the screen (11). When the screen (11) is moved quickly in the downstream direction, the fluid gushes from the downstream side through the screen (11) into the upstream side, and the foreign matters deposited on the screen (11) are removed from the screen (11) by the force of the gushing fluid.
IPC 1-7
IPC 8 full level
B01D 29/01 (2006.01); B01D 36/02 (2006.01)
CPC (source: EP KR US)
B01D 29/01 (2013.01 - EP US); B01D 29/117 (2013.01 - EP US); B01D 29/62 (2013.01 - KR); B01D 29/6423 (2013.01 - EP US); B01D 29/6484 (2013.01 - EP US); B01D 29/66 (2013.01 - EP US); B01D 29/70 (2013.01 - EP US); B01D 29/72 (2013.01 - EP US); B01D 36/02 (2013.01 - EP US); B01D 2201/02 (2013.01 - EP US); B01D 2201/188 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 6033558 A 20000307; AU 6138196 A 19970305; CN 1065448 C 20010509; CN 1196687 A 19981021; DE 69619989 D1 20020425; EP 0842690 A1 19980520; EP 0842690 A4 19990107; EP 0842690 B1 20020320; EP 0842690 B8 20020918; JP 3047125 B2 20000529; KR 100429118 B1 20040616; KR 19990036125 A 19990525; WO 9705939 A1 19970220
DOCDB simple family (application)
US 42498 A 19980203; AU 6138196 A 19960620; CN 96197108 A 19960620; DE 69619989 T 19960620; EP 96918874 A 19960620; JP 50829597 A 19960620; JP 9601724 W 19960620; KR 19980700793 A 19980203