Filter arrangement

Details Filter arrangement Filter arrangement

B - Operations, Transporting

01

D

B01D 29/01 (2006.01) B01D 35/027 (2006.01)

Patent

CA 2221300

A filter arrangement has a two-piece filter housing that contains a filter element (5) through which flows the medium to be filtered. In the plane of a joining surface (9), the filter element (5) has approximately the same contour as the filter housing. A clamping device for the filter element is arranged in the area of the joining surface (9). The clamping device has studs (11) distributed at predetermined distances from each other around the whole joining surface (9). The studs (11) firmly retain a disk made of non-woven fabric panel that acts as a filter element when the two parts (2, 3) of the housing are assembled. Central ribs (6) provided with such studs, for example conical or pyramid-shaped studs, may also be arranged inside the filter housing. In another embodiment, the filter element (5) is a fabric screen which may be secured for example by ultrasonic welding between the two parts (2, 3) of the housing, and which may also be fixed in the housing by a supporting body (25).

Cet agencement de filtrage comprend un boîtier de filtre en deux parties qui contient un élément de filtrage (5) à travers lequel s'écoule le milieu à filtrer. Dans le plan d'une surface de jonction (9), l'élément de filtrage (5) a un contour qui correspond à peu près au contour du boîtier du filtre. Un dispositif de serrage de l'élément de filtrage est monté dans la zone de la surface de jonction (9). Le dispositif de serrage comprend des pointes (11) distribuées à des intervalles prédéterminés tout autour de la surface de jonction (9) qui serrent fermement un disque en non-tissé qui sert d'élément de filtrage (5) lorsque les deux parties (2, 3) du boîtier sont assemblées. Des nervures médianes (6) pourvues elles aussi de telles pointes, par exemple coniques ou pyramidales, peuvent être en outre façonnées à l'intérieur du boîtier du filtre. Dans un autre mode de réalisation, l'élément de filtrage (5) est un crible en tissu assujetti par exemple par soudage aux ultrasons entre les deux parties (2, 3) du boîtier et susceptible d'être fixé dans le boîtier (1) par un corps de support supplémentaire (25).

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