专利名称：Air-jet impact crusher for surface cleaning of
granular material, especially thermallytreated used foundry sand
发明人：HAMACHER, GERD HELGE申请号：EP91116820.1申请日：19911002公开号：EP0482393A1公开日：19920429
专利附图：
摘要：In order to provide a countercurrent impact jet pulveriser, in particular for theregeneration of thermally pretreated old foundry sand, in which it is ensured by simple
means that the sand grains blown into the impact chamber of the impact jet pulveriser inopposite directions do not leave the impact chamber again too rapidly through thedischarge opening, it is proposed according to the invention to line the impact chamber(21) internally with a perforated insert (22) consisting especially of a perforated plasticplate or perforated rubber plate.
申请人：KLOECKNER-HUMBOLDT-DEUTZ AG
地址：OTTO STRASSE 1; W-5000 KOELN 90,Nikolaus-August-Otto-Allee 2 D-51149Köln DE
国籍：DE
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