Filter cartridge for a reversible flow filter

Details Filter cartridge for a reversible flow filter Filter cartridge for a reversible flow filter

B - Operations, Transporting

01

D

B01D 29/66 (2006.01)

Patent

CA 2659985

The invention relates to a filter candle for a backwash filter for filtering a fluid, said filter candle comprising a filter candle interior which is surrounded by a filter medium. The aim of the invention is to create a filter candle the filter medium of which can be cleaned in the backwash phase in a particularly effective and even manner. For this purpose, the filter candle comprises a backwash flow baffle element which can be displaced in a longitudinal direction of the filter candle by the backwash flow caused when the filter candle is backwashed and effects a local increase of the baffle pressure of the backwash flow. The backwash flow baffle element does not rest on the filter medium when the filter candle is backwashed.

L'invention vise à créer une bougie filtrante pour filtre à lavage à contre courant, destinée à filtrer un fluide et dotée d'un espace intérieur entouré d'un milieu filtrant qui peut être nettoyé de manière particulièrement homogène et efficace dans la phase de lavage à contre courant. A cet effet, la bougie filtrante comporte un élément de retenue du flux de contre courant disposé dans l'espace intérieur de la bougie filtrante, lequel élément, lorsque le flux de contre courant traverse la bougie filtrante, peut être déplacé dans le sens longitudinal de ladite bougie et générer ainsi une augmentation locale de la pression de retenue du flux de contre courant, ledit élément de retenue du flux de contre courant n'étant pas en contact avec le milieu filtrant lors du lavage à contre courant de la bougie filtrante.

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