B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
182/54
B01D 29/09 (2006.01) B01D 29/00 (2006.01)
Patent
CA 1321550
ABSTRACT A filter apparatus and method is provided wherein a tank is adapted to receive unfiltered liquid. An outlet chamber is located adjacent the bottom wall of the filter tank and is separated therefrom by a perforated plate. A filter media is movable across the rear, bottom and front walls of the filter tank and accordingly, unfiltered liquid must pass through the filter media as well before entering the outlet chamber. A chain flight assembly is provided which is movable across the filter media along the rear, bottom and front wall of the filter tank. As the chain flight assembly is continuous, a return path is across the top of the tank above the unfiltered liquid. A baffle plate is provided near the rear wall within the filter tank. This baffle plate extends sideways to near each side wall of the filter tank, upwardly above the level of the unfiltered liquid within the filter tank and downwardly to a point just above the flights of the chain flight assembly above the filter media at the bottom of the filter tank. A spray header is provided to spray filtered liquid between the rear wall of the filter tank and the baffle to prevent unfiltered liquid from bypassing the bottom of the baffle and entering the outlet chamber without passing through the filter media. Another spray header is provided to wash the chain flight assembly while it passes above the filter tank.
530674
Borden Ladner Gervais Llp
Filtra-Systems Company
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