Patent ID: 7799236
Filing Date: 2010-09-21
Classification: B01D

Abstract:
1. An apparatus for collecting soluble component-removed powder, comprising: a wash tank that has an internal receiving space; a powder supplier that is disposed above the wash tank and supplies soluble component- and poorly soluble component-containing powder to the wash tank; a solvent supplier that is disposed above the wash tank and supplies a solvent, capable of dissolving the soluble component contained in the powder to the wash tank; a pipe line of which an end is placed in the wash tank and the other end is placed outside the wash tank; a filter that is provided at the end of the pipe line in the wash tank; a pump that is connected with the outside end of the pipe line and applies vacuum negative pressure in the pipe line when the pump is in operation; a backwashing means that injects the solvent to the filter through the pipe line to remove, from the filter, the soluble component-removed powder stuck to the filter during the pumping of the pump as the soluble component is dissolved in the solvent, before which, the soluble component- and poorly soluble component-containing powder is mixed with the solvent in the wash tank; a powder discharge port that is disposed at a bottom of the wash tank and discharges the soluble component-removed powder out of the wash tank; a controller that individually controls the pump, the backwashing means, and the powder discharge port; a powder discharge time detecting means that detects the discharge time of the soluble component-removed powder discharged through the powder discharge port; and a discharge valve that is provided on the powder discharge port; wherein the controller opens or closes the powder discharge port by controlling the discharge valve on the basis of data detected by the powder discharge time detecting means, wherein the powder discharge time detecting means is any one of a pH measuring part that measures pH of a solution in the wash tank containing the soluble component and an electric conductivity measuring instrument that measures the electric conductivity of the solution in the wash tank containing the soluble component.