气体流量分类

模型HV-EXP4474

技术描述:

锯齿形筛可对固体化合物进行分类。被分离的固体化合物被送入料斗。混合物通过振动槽以中等高度送入筛的锯齿形风道。气流向上通过垂直管道。根据粒子的几何形状和密度，它们会被空气携带或由于重力而下落。在管道的每一个弯道，固体化合物通过气流并落在筛的对面的墙上。这相当于一个筛选阶段。由于流动条件的影响，在锯齿形风管的两个弯管内形成了涡尾迹。它确保固体物质大致垂直于气流移动。这样，在每个弯处都发生横向筛分。 Sequencing of large numbers of such stages results in very fine separation. features a 20-stage zigzag duct. Transparent material provides optimum observation of the processes in the duct. A fan generates the airflow. The airflow rate and the solid mass flow are adjustable. The fine material transported upwards with the air stream is separated by a cyclone. Pressure measurement points at the relevant positions inthe trainer enable to determine the pressure loss. Sand in different particle sizes is recommended for use as the feed material. For particle size analyses of the feed and of the coarse and fine material, a balance and a screening machine are recommended. The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.