Screening system
AssigneeAxiom Process Ltd.
InventorMarshall G. Bailey
Life of this patent
Estimating the term…
Abstract
The present invention provides a vibratory screening apparatus (1) for use in removing solids from a liquid feed, and a basket (4) therefore. The apparatus comprises a static outer housing (2), and a floating basket vibratable by a vibrator device (10). The basket mounts a stack (7) of screen assemblies (8) provided with respective flow directing trays (9) for receiving filtrates from the screen assemblies. A flow distributor (15) divides the feed into at least first and a second feed streams and directs them onto respective screen assemblies, and receives from the flow directing trays, filtrates from respective screen assemblies.
Claims9
A method of removing solids from a liquid and solids mixture feed comprising the steps of:
- a) providing a basket mounted in a vibratory screening apparatus, said basket having a stack of at least three screen assemblies separated from each other by a respective flow directing tray, said stack of at least three screen assemblies is provided with a flow distributor formed and arranged for:
- receiving filtrate from the flow directing tray associated with a primary upper screen assembly;
- dividing said filtrate into at least a first feed stream and a second feed stream;
- directing said feed streams onto respective ones of remaining first and second screen assemblies and receiving filtrate from said respective flow directing trays;
- b) directing a said liquid and solids mixture feed onto the primary upper screen assembly of the stack of screen assemblies;
- and
- c) using the flow distributor to:
- receive filtrate from the flow directing tray associated with the primary upper screen assembly;
- divide said filtrate into at least a first feed stream and a second feed stream;
- direct the first and second feed streams onto respective ones of remaining first and second screen assemblies;
- and to receive filtrate from said respective flow directing trays.
Dependencies are inferred from the claim text.