Combination of a filter element and a core element, and a...

B - Operations – Transporting – 01 – D

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B01D 29/15 (2006.01) B01D 29/96 (2006.01) B01D 35/147 (2006.01)

Patent

CA 2758905

A combination (10) of a replaceable filter element (21 ) and a core element (38) is provided, the filter element comprising a tubular wall (25) of filtration medium for collecting material in a fluid stream passing through the tubular wall (25), a first end part (26) and a second end part. The core element (38) comprises a perforated tube (39) having transverse outer dimensions smaller than transverse inner dimensions of the tubular wall (25), and a bypass valve member (35) provided at one end of the perforated tube (39). The bypass valve member (35) is tubular and moveably attached to the perforated tube (39) for movement in axial direction with respect to the perforated tube (39) between an extended position and a retracted position. The first end part (26) of the filter element (21) comprises an axial passage (29) configured to receive the bypass valve member (35) slideable and sealingly.

L'invention porte sur une combinaison (10) d'un élément filtrant remplaçable (21) et d'un élément noyau (38), l'élément filtrant comprenant une paroi tubulaire (25) de milieu de filtration pour recueillir de la matière dans un courant fluide passant à travers la paroi tubulaire (25), une première partie extrémité (26) et une seconde partie extrémité. L'élément noyau (38) comprend un tube perforé (39) ayant des dimensions extérieures transversales inférieures aux dimensions intérieures transversales de la paroi tubulaire (25), et un élément soupape de dérivation (35) disposé à une extrémité du tube perforé (39). L'élément soupape de dérivation (35) est tubulaire et est fixé de façon déplaçable au tube perforé (39) en vue d'un déplacement dans une direction axiale par rapport au tube perforé (39) entre une position étendue et une position rétractée. La première partie extrémité (26) de l'élément de filtre (21) comprend un passage axial (29) configuré pour recevoir l'élément soupape de dérivation (35) de façon coulissante et de manière étanche.

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