Filter cartridge

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 27/08 (2006.01)

Patent

CA 2502929

The invention relates to a filter cartridge (1) which comprises a firmly fixed lid (10) and has a long service life. Said lid (10) is embodied in such a way that the bottom (11) of the lid extends towards the peripheral wall (3) of the cartridge container to join the lateral wall (16) of the lid, by means of an inwardly curved edge section (14), the curved edge section (14) and the lateral wall (16) in the form of a strip joining in the forming region to form an inwardly tapered common wall section (15). In this way, the region fixing the lateral wall (16) to the peripheral wall (3) is subjected only to a tensile load, minimising the risk of shear fracture, and the inner pressure in the region of the common wall section (15) presses the wall section against the peripheral wall (3), thus exerting an additional sealing force.

L'invention concerne une cartouche filtrante (1) sur laquelle un couvercle (10) est fixé de manière durable, ladite cartouche présentant une durée de vie allongée. Ledit couvercle (10) est conçu de sorte que le fond de couvercle (11) se prolonge, en direction d'une paroi périphérique (3) du contenant de cartouche, par une section marginale (14) courbée vers l'intérieur, avant d'atteindre la paroi latérale (16) du couvercle. Ladite section courbée (14) et la paroi latérale (16) en forme de bande se rejoignent, dans la zone de jonction, sous la forme d'une partie de paroi commune (15) effilée vers l'intérieur. La zone de fixation de la paroi latérale (16) sur la paroi périphérique (3) est ainsi sollicitée uniquement en tension, ce qui réduit au minimum le risque de cassure par cisaillement. En outre, la pression interne dans la zone de la partie de paroi commune (15) plaque cette dernière contre la paroi latérale (3) et exerce ainsi une force d'étanchéité supplémentaire.

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