Filter cartridge with a sieve in an outlet aperture

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 27/02 (2006.01) B01D 17/00 (2006.01) B01D 27/08 (2006.01) B01D 39/16 (2006.01) C02F 1/00 (2006.01) C02F 1/28 (2006.01) C02F 1/50 (2006.01)

Patent

CA 2211252

A filter cartridge is described which can be filled with granular filter material, approximately in the shape of a cup open at the top which can be closed with a lid. This filter cartridge has a base (1) with at least one outlet aperture (2), has a sieve means (12) and side walls (3) and is for filtering liquids, in particular water. In order that even small granulate particles of, for example, ~ 200 µm wide cannot pass through the outlet apertures (2) in the base (1), and nevertheless good through flow of the liquid to be purified is ensured, it is provided according to the invention that 1 - 64 outlet apertures (2) are provided, each with a fabric insert (12) with plastics frames (11), with a pore size in the fabric of 50 µm to 300 µm, preferably 80 to 200 µm.

Une cartouche de filtre est proposée, laquelle peut être remplie de matière granulée et dont la forme s'apparente à celle d'une tasse dont la partie supérieure est ouverte et peut être fermée par un couvercle. Cette cartouche de filtre possède une base (1) avec au moins un orifice de sortie (2), un dispositif de tamisage (12) et des parois latérales (3) pour le filtrage de liquides, notamment de l'eau. Pour empêcher les plus fines particules, moins de 200 nm par exemple, de s'échapper à travers les orifices de sortie (2) dans la base (1) de la cartouche, tout en assurant un débit approprié du liquide à purifier, l'invention prévoit le recours à des ouvertures de sortie de 1-64 (2), chacune étant dotée d'une pièce de tissu (12) tendue à l'intérieur d'un cadre en plastique (11) avec des pores de dimensions allant de 50 nm à 300 nm, de préférence de 80 à 200 nm.

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