Patent ID: 8807345
Filing Date: 2014-08-19
Classification: B01D,B03B,B07B,G01N

Abstract:
1. An apparatus comprising: a housing; a plurality of grading screens nested in concentric fashion within the housing, wherein an innermost grading screen defines a receiving compartment configured to receive aggregate, a subsequent grading screen has a finer mesh size and a larger surface area than the innermost grading screen, and a space between adjacent grading screens defines a sorting compartment; a continuous fluid pathway passing from the receiving compartment through the plurality of grading screens; a first end plate configured to engage a first end of the plurality of grading screens; a second end plate configured to engage a second end of the plurality of grading screens; a connector extending between and joining the first end plate and the second end plate, wherein the connector resides within the receiving compartment of the innermost grading screen; and a lid configured to be brought into a liquid-tight sealing relationship with the housing; wherein at least one of the first end plate or second end plate is further configured to be brought into a liquid-tight sealing relationship with the plurality of grading screens.