Cassette filter

Details Cassette filter Cassette filter

B - Operations, Transporting

01

D

B01D 46/52 (2006.01) B01D 29/07 (2006.01)

Patent

CA 2480269

The invention relates to a cassette filter comprising a frame and a pleated filter material that is inserted therein, in addition to a protective grid having passage holes. Said protective grid is fastened at a distance from the filter material in the frame and has a flow resistance that is smaller than that of the pleated filter material. The invention is characterized in that the protective grid (1) consists of at least one film strip (2) that is bent around the passage holes (3), said film strip extending parallel relative to the direction of flow (4) of the medium to be filtered, and in that the protective grid recurrently contacts at least one other identically bent film strip (5) outside the passage holes (3) in contact points (6) and is glued to said other film strip in the contact points (6).

L'invention concerne un filtre à cassette comprenant un cadre et un matériau filtrant plissé, inséré dans ce cadre, ainsi qu'une grille de protection à orifices de passage, fixée dans le cadre, à distance du matériau filtrant, et présentant une résistance à l'écoulement qui est plus faible que celle du matériau filtrant plissé, caractérisé en ce que la grille de protection (1) est constituée par au moins un film en bande (2) cintré autour des orifices de passage (3), qui s'étend parallèlement à la direction d'écoulement (4) du milieu à filtrer, et en ce que la grille de protection est en contact récurrent avec au moins un autre film en bande (5), cintré de manière identique, à l'extérieur des orifices de passage (3), en des points de contact (6) et est collée audit film en bande auxdits points de contact (6).

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