Conical filter

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 25/24 (2006.01) B01D 25/00 (2006.01) B01D 27/06 (2006.01) B01D 46/52 (2006.01)

Patent

CA 2252551

A conical filter device inserts into a duct having flow passing from upstream to downstream. The filter device includes fluted filter media (62) having flutes formed therein and a housing (54). The filter forms a seal (59) between the outer edge of the filter at the downstream side and the housing. The upstream face of the filter is conical-shaped in a first embodiment and frusto-conical in a second embodiment with the housing roughly corresponding to the shape of the filter. The filter elements (62) are formed by winding layers of filter media to form a circular cross-section. The elements are moved axially as they are wound or placed on a shaping form while the sealant is still piable to shape the element.

L'invention concerne un dispositif filtrant conique inséré dans une conduite à flux circulant d'amont en aval. Le dispositif filtrant comprend un élément filtrant (62) comportant des cannelures et un logement (54). Le filtre forme un joint d'étanchéité (59) entre le bord externe du filtre sur le côté aval et le logement. La face amont du filtre a une forme conique dans une première forme d'exécution et tronconique dans une seconde forme d'exécution, la forme du logement correspondant approximativement à la forme du filtre. Les éléments filtrants (62) sont formés en enroulant des couches de milieu filtrant pour obtenir une section transversale circulaire. Pour former les éléments, ceux-ci sont déplacés axialement à mesure que se fait l'enroulement ou ils sont placés sur une pièce de formage pendant que le produit d'étanchéité est encore mou.

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