Apparatus for the treatment of a filter cake with a liquid on a movable filter
AssigneeKrauss-Maffei Aktiengesellschaft
InventorsWerner Stahl, Bernhard Richter, Franz Koch
Life of this patent
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Abstract
A disk-filter apparatus in which a filter disk is rotatable about a horizontal axis and lies substantially in a vertical plane to collect filter cakes on opposite sides of the disk. The filter cakes are each treated with a liquid from an array of ducts parallel to the filter cake and from which the liquid is distributed onto the filter cake. The ducts of each array are supplied at least in part through overflow boxes or weirs to control the pressure. The number of openings, spacing of the ducts and opening size are all selected to obtain the most homogeneous distribution of liquid onto the filter cakes that is possible.
Claims36
A disk-filter apparatus comprising:
- a least one filter disk rotatable about a substantially horizontal axis and lying in a substantially vertical plane and adapted to collect a filter cake along at least one flank of said disk;
- a planar array of generally horizontal ducts parallel to said flank and spacedly juxtaposed with the surface of said filter cake on said disk, said ducts being spaced one below another and having a mutual spacing and being each formed with a multiplicity of openings for directing liquid onto said filter cake substantially homogeneously;
- respective upwardly open receptacles each communicating with a respective one of said ducts;
- overflow means in each receptacle for maintaining a predetermined head of liquid therein and delivering excess liquid to a next lower receptacle;
- and
- liquid feed means connected to the receptacle of an uppermost one of said ducts for feeding a treating liquid thereto.
Dependencies are inferred from the claim text.