Materials handling and treatment

Details Materials handling and treatment Materials handling and treatment

B - Operations, Transporting

65

G

B65G 15/08 (2006.01) B01D 33/056 (2006.01) B01D 33/64 (2006.01) B01D 43/00 (2006.01) B65G 15/40 (2006.01)

Patent

CA 2649974

A belt filter apparatus (10) for treating material to separate solid and liquid components thereof. The apparatus (10) comprises an endless belt structure (11) adapted to circulate along a path (12) incorporating guide roller structures (13) around which the belt structure (11) passes. The endless belt structure (11) comprises an elongate belt portion (15) formed of water permeable material. The belt portion (15) has two opposed longitudinal edges (17, 18). The endless belt structure (11) further comprises a zipper (19) for releasably connecting the two longitudinal edges (17, 18) together so as to form a tubular structure (21) having a flexible side wall (22). The circulating path (12) includes an assembly zone (33) at which the longitudinal edges (17, 18) of the belt portion (15) are brought together and interconnected by way of the zipper (19) to form the tubular structure (21), and a disassembly zone (35) at which the zipper (19) is released to separate the longitudinal edges (17, 18) and the tubular structure (21) subsequently opened. Means (90, 110) are provided for compressing the tubular structure (21) along a portion thereof to express liquid from the material contained in the tubular structure (21). The liquid so released can discharge from the tubular structure (21) through the water permeable belt portion (15).

L'invention concerne un appareil (10) de filtration à courroie pour le traitement d'une matière en vue d'en séparer les composants solide et liquide. L'appareil (10) comprend une structure de courroie sans fin (11) pouvant circuler le long d'un trajet (12) incorporant des structures (13) de rouleaux de guidage autour desquelles passe la structure de courroie (11). La structure de courroie sans fin (11) comporte une partie de courroie allongée (15) formée d'une matière perméable à l'eau. La partie de courroie (15) présente deux bords longitudinaux opposés (17, 18). La structure de courroie sans fin (11) comporte, en outre, une fermeture à glissière (19) pour joindre, de façon à pouvoir les relâcher, les deux bords longitudinaux (17, 18) afin de former une structure tubulaire (21) ayant une paroi latérale flexible (22). Le trajet de circulation (12) comporte une zone d'assemblage (33) dans laquelle les bords longitudinaux (17, 18) de la partie de courroie (15) sont joints et interconnectés au moyen d'une fermeture à glissière (19) pour former la structure tubulaire (21), et une zone de désassemblage (35) dans laquelle la fermeture à glissière (19) est relâchée pour séparer les bords longitudinaux (17, 18) et la structure tubulaire (21) est par la suite ouverte. Des moyens (90, 110) sont fournis pour comprimer la structure tubulaire (21) le long d'une partie de celle-ci pour exprimer le liquide de la matière contenue dans la structure tubulaire (21). Le liquide ainsi libéré peut se décharger de la structure tubulaire (21) à travers la partie de courroie (15) perméable à l'eau.

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