METHOD AND APPARATUS FOR CONTROLLING FILTER CAKE THICKNESS AND FOR COMPRESSING A FILTER CAKE

摘要

A filter cake deposited on a porous surface is compressed thereagainst by a flexible sheet mounted adjacent the porous surface on the upstream side thereof so that when the filter cake builds up against the sheet it is forced by the hydraulic pressure of the liquid being filtered toward the cake to thereby automatically compress the cake when it becomes sufficiently thick to reach the sheet.