| 摘要 |
An apparatus 100 comprising a housing configured to be sealed in a liquid-tight manner, a plurality of grading screens 110a, 110b, 110c, 110d, 110e nested in concentric fashion within the housing, where an innermost grading screen defines a receiving compartment configured to receive liquid and/or 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, first and second end plates configured to engage first and second ends, respectively, of the plurality of grading screens in a liquid-tight manner, and a continuous fluid pathway passing from the receiving compartment through the plurality of grading screens. |
