公开(公告)号：US06422736B1

公开(公告)日：2002-07-23

申请号：US09598573

申请日：2000-06-21

申请人： Michael G. Antoniades ,  Harold G. Judd ,  Katrin I. Parsiegla ,  Benjamin T. Chen ,  Douglas E. Singer ,  Donald R. Irwin ,  Sucheta Tandon ,  Jess B. Hendricks, III ,  Heinz E. Stapelfeldt

发明人： Michael G. Antoniades ,  Harold G. Judd ,  Katrin I. Parsiegla ,  Benjamin T. Chen ,  Douglas E. Singer ,  Donald R. Irwin ,  Sucheta Tandon ,  Jess B. Hendricks, III ,  Heinz E. Stapelfeldt

IPC分类号： B01F722

CPC分类号： B01F7/168 ,  B01F7/22

摘要： A mixer for preparing silver halide grains for photographic use has upper and lower impellers housed in a draft tube. The bottom impeller has flat blades for micromixing silver and halide reactants introduced into the bottom of the draft tube. The upper impeller has pitched blades for macromixing the bulk fluid. The impellers are spaced apart at least the distance of their diameters so that the upper and lower impellers operate independently of one another so that micromixing is independent of macromixing. A flow disrupter structurally associated with the draft tube and positioned above the top impeller prevents vortexing of the fluid during mixing. Baffles may be provided in the draft tube to discourage vortexing.

摘要翻译： 用于制备用于照相用途的卤化银颗粒的混合器具有容纳在引流管中的上部和下部叶轮。 底部叶轮具有用于将引入到引流管底部的银和卤化物反应物微混合的扁平叶片。 上部叶轮具有用于使体积流体大块混合的叶片。 叶轮至少间隔其直径的距离，使得上部和下部叶轮彼此独立地操作，使得微混合独立于大分子混合。 与引流管结构相关并位于顶部叶轮上方的流动扰流器防止混合过程中的流体涡流。 可以在引流管中设置挡板以阻止涡旋。