B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 25/24 (2006.01)
Patent
CA 2571978
The present invention relates to a filter for liquid filtration, the construction of the filter ensure increased filtration capacity by using up the filtration medium rather that clogging up. The filter comprises layers of filtration medium (2) and optionally also layers of spacer medium (1). Liquid to be filtered can through bypass spaces circumvent a number of layers of filtration and/or spacer medium and is by at least one sealing (3) directed through the filtering area of the filtration medium. End caps (5) with perforations (6) allow the liquid to be distributed within the bypass space between the edges of the layers of filtration medium and spacer medium. Rolled filters with a central core (4) to drain off the filtered liquid can be constructed in large dimensions. Also disclosed is a method of making the filter. The filters are suitable for many purposes, especially for filtering liquid with oil.
L'invention concerne un filtre pour la filtration de liquides, ce filtre étant construit de manière à assurer une capacité de filtration accrue par l'usure du milieu filtrant plutôt que son obstruction. Ce filtre comprend des couches de milieu filtrant (2), et éventuellement aussi des couches de milieu d'espacement (1). Le liquide à filtrer peut, par des espaces de dérivation, contourner des couches de filtration et/ou de milieu d'espacement, et est dirigé, par au moins un élément étanche (3), à travers la zone filtrante du milieu filtrant. Des bouchons d'extrémité (5) comportant des perforations (6) permettent de répartir le liquide dans l'espace de dérivation, entre les bords des couches du milieu filtrant et du milieu d'espacement. L'invention permet de construire des filtres enroulés de grandes dimensions comportant un noyau (4) central pour dégorger le liquide filtré. L'invention concerne aussi un procédé de fabrication du filtre. Ces filtres sont polyvalents, et conviennent notamment pour filtrer un liquide huileux.
Larsen Lise Nohr
Olsen Ole
Dma Sorption Aps
Macpherson Leslie & Tyerman Llp
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