Filtering device used to rapidly filter large amounts of water, e.g. in swimming pools comprises a filter casing surrounding a filter bed in the lower and/or middle region and a freeboard in the upper region

摘要

Filtering device comprises a filter casing (18) surrounding a filter bed (26) in the lower and/or middle region and a freeboard (28) in the upper region. The upper region of the casing has a filter inlet (30) formed by one or more openings (42). Preferred Features: The device has a surface area of 0.5-2 m 2>, preferably 1 m 2>with a height of 1-3 m, preferably 2.5 m.