Filtering device for separating solids from liquids

B - Operations – Transporting – 01 – D

Patent

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B01D 33/048 (2006.01) B01D 33/04 (2006.01)

Patent

CA 1305925

A B S T R A C T A filtering device is described, for separating solids from liquids. It includes a housing; two circular discs spaced from each other in coaxial arrangement and rotatably mounted in said housing with a horizontal axis of rotation, each of said discs having a peripheral flange; a filter belt having a pair of parallel spaced-apart lateral edges, and a pair of free ends; a plurality of guide pulleys rotatably mounted in said housing with axis of rotation parallel to said axis of rotation of said discs; and an endless screen support belt having parallel spaced-apart edges arranged and adapted to be guided by said guide pulleys to form an upper strand and a lower strand. Drive means are provided for driving said endless screen support belt. The upper strand of said endless screen support belt supports a portion of the filter belt and presses the lateral edges of the filter belt against the peripheral flanges of the discs over an arc of at least 120°, and forms with the two discs a half-drum-like filter chamber that is open upwards. At least one sludge catch bar is mounted on the discs to rotate with said discs, and extends from and between the discs. The catch bars are arranged to contact the filter belt in the filter chamber. A conduit is provided for charging an unfiltered liquid mixture into the filter chamber.

616263

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