B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 29/15 (2006.01) B01D 29/46 (2006.01) B01D 29/54 (2006.01) B01D 29/64 (2006.01) B01D 29/68 (2006.01) B01D 29/90 (2006.01) B01D 33/073 (2006.01) B01D 33/27 (2006.01) B01D 33/39 (2006.01) B01D 33/50 (2006.01)
Patent
CA 2366910
The aim of the invention is to improve the backwashing action of a backwashable filter for liquids comprising the following: a filter body which is located in a housing and which separates an incoming flow chamber from an outgoing flow chamber and a backwashing channel which lies adjacent to the filter body, is situated in the outgoing flow chamber and has a backwashing opening that faces towards the filter body, said backwashing channel also communicating with a source of a cleaning medium and said cleaning medium being subjected to pressure in the backwashing channel, and the filter body and the backwashing channel being moveable in relation to each other. To this end, the filter body has links on a side facing towards the backwashing channel which are set apart from each other in the direction of motion. Adjacent links form a separately backwashable segment respectively and when a segment is backwashed, the corresponding links lie sealingly against the backwashing channel with sealing surfaces and expose the backwashing opening. Each sealing surface extends further than the backwashing opening in the direction of motion, so that each link can tightly seal the backwashing opening with its sealing surface.
L'invention concerne un filtre lavable à contre-courant destiné à des liquides. Un corps filtrant est logé dans un boîtier et un compartiment d'affluence est séparé d'un compartiment d'évacuation. Le compartiment d'évacuation renferme un canal de lavage qui est en contact avec le corps filtrant. Ce canal de lavage présente une ouverture tournée vers le corps filtrant, communique avec une source d'agent de nettoyage et est alimenté en agent de nettoyage sous pression. Le corps filtrant et le canal de lavage peuvent être déplacés l'un par rapport à l'autre. Pour améliorer l'action de lavage à contre-courant, la face du corps filtrant tournée vers le canal de lavage présente des segments espacés et placés dans le sens de déplacement. Des segments adjacents formant respectivement un segment lavable à contre-courant distinct. Lors du lavage d'un segment, les segments associés sont, par des surfaces d'étanchéité, en contact hermétique avec le canal de lavage et libèrent l'ouverture de lavage. Chaque surface d'étanchéité s'étend plus loin que l'ouverture de lavage dans le sens de déplacement de telle façon que chaque segment peut, par sa surface d'étanchéité, fermer hermétiquement l'ouverture de lavage.
Mahle Filtersysteme Gmbh
Mcfadden Fincham
LandOfFree
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