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对撞式流化床超细气流粉碎机不同的底部结构所产生的底部区域内腔流场不同。利用计算流体力学(CFD)软件 FLUENT6.3对平底、120°锥底、球形底等三种底部结构内腔气流场进行有限元分析计算,并以试验结果验证该模型的正确性,根据计算结果绘制不同底部结构内腔的流线图、速度矢量图。结果表明,采用120°锥形底结构能够防止底部积料及物料对粉碎机机体的磨损,有利于提高粉碎效果。
The bottom flow field of the bottom area produced by different bottom structures of the colliding fluidized bed ultrafine jet mill is different. The computational fluid dynamics (CFD) software FLUENT6.3 was used to calculate the airflow field in the three bottom structures of flat bottom, 120 ° cone bottom and spherical bottom. The correctness of the model was verified by the experimental results. According to the calculation results Draw a streamline diagram of the lumen of different bottom structures, speed vector illustration. The results show that the use of 120 ° conical bottom structure can prevent the bottom of the material and material on the grinder body wear, help to improve the grinding effect.