Filter pan

• US 20080173579A1
• Filed: 01/02/2008
• Published: 07/24/2008
• Est. Priority Date: 05/27/2003
• Status: Abandoned Application

• Current Assignee: Hugh J. Oglesby
• Original Assignee: Hugh J. Oglesby
• Inventors: Oglesby, Hugh J.
• Application Number:
  US12/006,404
• Publication Number:
  US 20080173579A1
• Time in Patent Office: Days
• US Class Current: 210/483
• CPC Class Codes: B01D 33/19 the table surface being divided in successively tilted sectors or cells, e.g. for discharging the filter cake

Abstract

A removable filter for use with a filter pan including a pan bottom and drainage trough for separation of liquids and solids such as the separation of phosphoric acid from phosphoric slurry comprising an intermediate filter member including an upper surface and a lower surface having a plurality of filter apertures formed therethrough, a replaceable filter cloth including a plurality of filter holes disposed on the upper surface of the intermediate filter member to cover the plurality of filter apertures and a plurality of elongated substantially parallel filter support elements disposed on the lower surface of the intermediate filter member such that when the removable filter is placed in the filter pan the plurality of elongated substantially parallel filter support elements engages the pan bottom to support the intermediate filter member in spaced relation thereto to cooperatively form in liquid flow space therebetween such that liquid filtered through the plurality of filter holes and the plurality of filter apertures onto the pan bottom flows into the drainage trough.

Claims

1-31. -31. (canceled)

32. A filter and filter pan combination for separation of liquids and solids, said filter pan comprising a pan bottom having a peripheral side wall extending upwardly from each side thereof and a drainage trough centrally formed therein, said filter comprises an intermediate filter member including an upper surface and a lower surface having a plurality of filter apertures formed therethrough, a filter cloth including a plurality of filter holes disposed on said upper surface on said intermediate filter member to cover said plurality of filter apertures and at least three elongated filter support elements extending substantially the entire width of said filter pan and disposed to engage said lower surface of said intermediate filter member such that when said filter is operatively placed in said filter pan said plurality of elongated filter support elements engages said pan bottom to support said intermediate filter member in spaced relation thereto to cooperatively form in liquid flow space therebetween wherein liquid filtered through said plurality of filter holes and said plurality of filter apertures between said elongated filter support elements into said drainage trough wherein each peripheral side wall comprises a lower wall portion and an upper wall portion interconnected by a filter retainer disposed to engage said intermediate filter member to retain said removable filter within said filter pan during use, said filter retainer comprises a filter retainer member including a filter retaining surface disposed to engage a portion of the upper surface of said intermediate filter member when said filter pan is rotated during use.