EP 2089133 A4 20100331 - DIATOMACEOUS EARTH FILTER APPARATUS AND METHOD
Title (en)
DIATOMACEOUS EARTH FILTER APPARATUS AND METHOD
Title (de)
DIATOMEENERDEFILTERVORRICHTUNG UND -VERFAHREN
Title (fr)
APPAREIL ET PROCÉDÉ DE FILTRE À DIATOMÉES
Publication
Application
Priority
US 2006042465 W 20061031
Abstract (en)
[origin: WO2008063159A2] The invention provides an apparatus and method for removing diatomaceous earth and contaminants from a filter and for filtering liquid using diatomaceous earth. Embodiments of the method can include a washdown process, a backwash process, and a filtering process. Some embodiments of the apparatus can include one or more filter cartridges with cartridge tubes to increase flow during the backwash process. Some embodiments of the apparatus can include a backwash sprayer to disturb contaminants during the backwash process. Some embodiments of the apparatus can include a removable lid to access the filter cartridges during the washdown process.
IPC 8 full level
B01D 37/02 (2006.01); B01D 24/46 (2006.01)
CPC (source: EP)
B01D 29/114 (2013.01); B01D 29/52 (2013.01); B01D 29/6438 (2013.01); B01D 29/66 (2013.01); B01D 37/02 (2013.01)
Citation (search report)
- [X] US 3037634 A 19620605 - MILLS JAMES M
- [X] US 4657673 A 19870414 - KESSLER EMERICH [US]
- [X] US 2960232 A 19601115 - GILLETTE EDWARD F
- See references of WO 2008063159A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008063159 A2 20080529; WO 2008063159 A3 20090528; AU 2006350955 A1 20080529; AU 2006350955 B2 20111208; CA 2668626 A1 20080529; CA 2668626 C 20160112; EP 2089133 A2 20090819; EP 2089133 A4 20100331; EP 2314365 A1 20110427; EP 2314365 B1 20130320
DOCDB simple family (application)
US 2006042465 W 20061031; AU 2006350955 A 20061031; CA 2668626 A 20061031; EP 06827168 A 20061031; EP 11150515 A 20061031