| 摘要 |
<p>A decanter centrifuge for separating a raw material into solids and two liquid phases of different densities has inlet apertures (11) for the raw material and outlet apertures (12) for solids. Each liquid phase is withdrawn intermediate the ends of the separating space (10) through a separate set of outlet tubes (13, 14) extending through a conical section (20) of the drum wall which section diverges towards the solids outlet end at a steeper angle than the preceding wall section (18), counted from the inlet end. The solids-conveyor screw (3, 4) has cut-outs in the region of the tubes (13, 14). The inwardly oriented openings of one set of tubes e.g. (13), are closer to the drum axis than the openings of the other set of tubes (14). Downstream of the tubes (13) a radial partition wall (15) is secured to the conveyor screw and the periphery of that wall is farther away from the drum axis than the outermost tube openings. The partition wall efficiently retains the lighter liquid phase on its upstream side and permits the heavier liquid phase to pass together with the solids so that each liquid phase is withdrawn with practically content of the other liquid phase. <IMAGE></p> |
