公开(公告)号：US4657144A

公开(公告)日：1987-04-14

申请号：US705127

申请日：1985-02-25

申请人： Peter Martin ,  Avis N. Wyatt, Jr. ,  Hector Alonso ,  Norman R. Rowe ,  Robert S. Southard ,  Stephen G. Zimmermann

发明人： Peter Martin ,  Avis N. Wyatt, Jr. ,  Hector Alonso ,  Norman R. Rowe ,  Robert S. Southard ,  Stephen G. Zimmermann

IPC分类号： B07B13/18 ,  A24B1/04 ,  B07C5/342 ,  G01N21/89 ,  G01N21/892 ,  A24C5/36 ,  A24C5/39

CPC分类号： A24B1/04 ,  B07C5/3425 ,  B07C5/368 ,  Y10S131/905

摘要： A method and apparatus are provided for detecting and removing foreign material which may be found in a stream of particulate matter, such as tobacco. The tobacco is allowed to fall in a cascade past an optical detector. The turbulence of the falling motion brings a large proportion of the particles in the cascade into the field of view of the detector. When foreign material is detected, a signal is generated to activate a fluid blast directed at the portion of the cascade in which the foreign material is located.

摘要翻译： 提供了用于检测和去除可能在诸如烟草的颗粒物质流中发现的异物的方法和装置。 允许烟草通过光学检测器级联落下。 落下的运动的湍流使大部分级联的颗粒进入检测器的视场。 当检测到异物时，产生信号以激活定向在异物所在级联部分的流体鼓风。