Bag filter and retainer therefor

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 29/13 (2006.01) B01D 29/23 (2006.01)

Patent

CA 2231511

A fluid filter (10) having a hollow, molded, plastic housing (12) with an open end, a fluid inlet port (20) and a fluid outlet (22). An internally threaded, plastic, molded cap (14) is threadedly received on the housing (12) via mating external threads (56, 58) for sealing the open end of the housing (12). A cap seal (60) prevents fluid contamination of the threads (56, 58). A removable filter element (38) is contained within the housing (12) between the fluid inlet (20) and the fluid outlet (22). A molded, resilient, plastic retainer (44) captured between the cap (14) and the filter element (38) retains the filter element (38) in position within the filter (10). If the filter element (38) is of a bag filter type, as compared with a filter cartridge type, the retainer (44) has a plurality of resilient legs (46) which press down upon a bag mouth seal (40) forcing it into contact with a flared mouth of the bag support (28).

L'invention concerne un filtre à fluide (10) comprenant un corps (12) en plastique moulé et creux, dont une extrémité est ouverte et comportant un orifice d'entrée de fluide (20) et un orifice de sortie de fluide (22). Un couvercle (14) en plastique moulé, pourvu d'un filetage intérieur (56) est vissé sur le corps (12) qui est pourvu d'un filetage extérieur (58) correspondant, cela pour fermer l'extrémité ouverte dudit corps (12). Un joint de couvercle (60) empêche la contamination des filetages (56, 58) par le fluide. Un élément filtrant (38) amovible est contenu dans le corps (12), entre l'orifice d'entrée de fluide (20) et l'orifice de sortie de fluide (22). Un dispositif de retenue (44) en plastique moulé, élastique, bloqué entre le couvercle (14) et l'élément filtrant (38), maintient celui-ci en position dans le filtre (10). Si l'élément filtrant (38) est un filtre du type sac, et non un filtre du type cartouche, le dispositif de retenue (44) comporte une pluralité de branches (46) élastiques qui exercent une pression vers le bas sur un joint d'ouverture de sac (40), de façon à maintenir celui-ci en contact avec l'ouverture évasée du support de sac (28).

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