| 摘要 |
A drum mixer (10) includes an elongate hollow rotatable drum (12) having an outer surface, a sleeve (32) having an inner surface, the sleeve being mounted coaxially with the elongate hollow rotatable drum and so as to define an annular chamber (34), and structure for mixing hot mix asphalt in the annular chamber including rake flights (50) mounted on the outer surface of the elongate hollow rotatable drum (12) and in the annular chamber (34) including scouring structure for lifting hot mix asphalt up from a lower portion of the annular chamber along the inner surface of the sleeve (32) through the annular chamber and onto an upper portion of the outer surface of the elongate hollow rotatable drum, the scouring structure including a plurality of shaped scouring fingers (56) extending radially toward the outer surface of the elongate hollow rotatable drum so as to break up hot mix asphalt.
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