Filtrate discharge system for pressure filter
AssigneeDorr-Oliver Incorporated
InventorsCharles A. Willus, Vaino J. Kosonen, Dale R. Sanchez
Life of this patent
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Abstract
A low pressure filtration and thickening device comprising a tank having a plurality of suspended filter elements therein and a plurality of filtrate receiving compartments in the upper portion of the tank for receiving filtrate from the filter elements wherein a filtrate discharge system is provided for providing separate and uninterrupted flow paths for the filtrate from the filter tank to a storage tank.
Claims9
In a filtration device for filtering a liquid from a solids slurry solution and concentrating a solids underflow therefrom, a cylindrical tank housing a plurality of filter elements suspended from a support plate, a filtrate chamber above said support plate and comprising individual filtrate compartments each for receiving filtrate from a selected number of said filter elements, and said filtrate compartments separated one from the other within said filtrate chamber by radially arranged panel members mounted on said support plate, a filtrate discharge system for said device comprising,
- (a) a filtrate discharge outlet from each of said filtrate compartments at the periphery of said cylindrical tank,
- (b) filtrate collecting means located outside said tank for receiving filtrate under pressure from said filtrate compartments and including a pressure head box mounted above said tank,
- (c) a plurality of filtrate receiving boxes provided in said pressure head box equal in number to the number of said filtrate compartments in the filtrate chamber,
- (d) a separate flow pipe connection between each of said filtrate discharge outlets and a filtrate receiving box in said head box, and
- (e) valve means for each of said flow pipe connections for opening or closing the flow path between a selected filtrate compartment and its associated filtrate receiving box.
Dependencies are inferred from the claim text.