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AssigneePassavant-Werke Michelbacher Hutte
InventorsOswald Busse, Hugo Klesper
Estimating the term…
A process and apparatus for operating a filter press having a sludge feed pump and a pressure tank in communication therewith wherein during filtration a quantity of sludge is withdrawn and stored in the pressure tank under a cushion of compressed air and wherein sludge is introduced under pressure from the pressure tank into the press during the next charging operation. A conduit having flow control means therein communicates the upper portion of the pressure tank with the press for injecting compressed air therein. The upper portion of the pressure tank also communicates with a compressed air supply conduit having flow control means therein which is controlled automatically as a function of the sludge level in the pressure tank.
The method of operating a filter press having a pressure tank in communication therewith wherein during filtration sludge is introduced under pressure into one end of said filter press and a quantity of said sludge is withdrawn from the other end of said filter press and is transferred to and stored in said pressure tank under a cushion of compressed air which builds up inside said tank and wherein said sludge is introduced under pressure from said tank into said other end of said filter press during the next charging operation and the filter press is cleaned after each filtering cycle by injecting compressed air into the filter press at said other end thereof to transport any remaining sludge toward said one end of said filter press for removal thereat, the improvement comprising the step of deriving said compressed air injected into said other end of the filter press from said pressure tank.
In apparatus for the operation of a filter press having a sludge feed pump communicating with one end of said press and a pressure tank communicating with the other end of said press wherein during filtration a quantity of said sludge is withdrawn from said other end and is stored in said pressure tank under a cushion of compressed air which builds up inside said tank and wherein said sludge is introduced under pressure from said tank into said filter press during the next charging operation, the improvement comprising:
Dependencies are inferred from the claim text.