Cleanable dust filter comprising a zigzag pleated filter pack

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 46/52 (2006.01)

Patent

CA 2636131

The present invention relates to a cleanable filter (1) for particulate material, especially dust, comprising a zigzag pleated filter pack (2), spacers (6) disposed between the pleats in the filter pack and a frame (3) having an upper (4) and lower part covering the respective upper and lower side of said filter pack that contains the ends of the fold lines and two lateral parts covering the opposite sides of said filter pack that contains the ends of the filter medium (5) zigzag folded into a filter pack, said frame (3) thereby leaving the opposite sides of the filter pack that contains alternate fold lines of the pleated filter pack, free for the passage of air. According to the invention the filter medium (5) in the filter pack include a pleated sheet of polytetrafluorethylene (PFTE) and the spacers (6) between the pleats consist of corrugated aluminium foils. An earthing element (7) furthermore electrically connects the aluminium foils to each other and to an earth connection on the outside of the filter frame (3).

La présente invention concerne un filtre nettoyable (1) pour matériau particulaire, en particulier la poussière, contenant un paquet filtrant plissé en zigzag (2), des entretoises (6) disposées entre les replis dans le paquet filtrant et un cadre (3) ayant une partie supérieure (4) et inférieure recouvrant le côté supérieur et le côté inférieur respectifs dudit paquet filtrant contenant les extrémités des lignes de pli et deux parties latérales recouvrant les côtés opposés dudit paquet filtrant qui contient les extrémités du produit filtrant (5) repliées en zigzag dans un paquet filtrant, ledit cadre (3) quittant ainsi les côtés opposés du paquet filtrant contenant des lignes de pli alternées du paquet filtrant plissé, libre pour le passage d~air. Selon la présente invention le produit filtrant (5) dans le paquet filtrant comprend une feuille plissée de polytétrafluoréthylène (PFTE) et les entretoises (6) entre les replis se composent de feuilles d~aluminium ondulées. Un éléments de mise à la terre (7) connecte électriquement en outre les feuilles d~aluminium les unes aux autres et à une connexion de terre à l~extérieur du cadre de filtre (3).

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