Immersed surface cleaning device provided with a non-return...

E - Fixed Constructions – 04 – H

Patent

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Details

E04H 4/16 (2006.01)

Patent

CA 2558765

The invention relates to an immersed surface cleaning device comprising a filtering chamber (6) provided, through a lower rigid wall (8), with at least one liquid inlet (9a, 9b) which has a non-return unit, at least one filter (7) remote from each liquid inlet (9a, 9b) in such a way that a solid impurities retaining area (12) is defined and with a hydraulic circuit for forming a liquid flow by pumping means (4). At least one non-return unit comprises an anti-return conduit (20) which extends through the retaining area (12) away from the liquid inlet and whose free end (21) enters said retaining area (12), wherein the conduit is used for preventing at least the passage of impurities in an opposite direction from the retaining area through the liquid inlet at least when said pumping means is unused.

L'invention concerne un appareil nettoyeur de surface immergée comprenant une chambre de filtration (6) présentant, à travers une paroi (8) inférieure rigide, au moins une entrée de liquide (9a, 9b) dotée d'un dispositif anti- retour, au moins un filtre (7) s'étendant à distance de chaque entrée de liquide (9a, 9b) de façon à définir une zone de retenue (12) d'impuretés solides, et un circuit hydraulique apte à former une circulation de liquide sous l'effet de moyens (4) de pompage. Au moins un dispositif anti-retour comprend un conduit anti-retour (20) adapté pour s'étendre dans la zone de retenue (12) à partir de l'entrée de liquide en présentant une extrémité libre (21) débouchant dans la zone de retenue (12), ce conduit étant adapté pour empêcher le passage au moins des impuretés en sens rétrograde depuis la zone de retenue (12) à travers l'entrée de liquide au moins lorsque les moyens de pompage (4) sont inactifs.

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