针对动筛跳汰机现有长方形孔筛板开孔率偏小,透水性差,物料易堵塞筛孔等问题,采用理论分析与试验研究相结合的方法,分析了筛板透筛机理和透筛物形成的原因,理论计算了长方形孔筛板的开孔率.为了增大开孔率,优化设计出圆弧形波浪形孔筛板,其理论开孔率相对于直条式长方形孔筛板的理论开孔率增加了10.2％.对两种不同孔形筛板进行工业性对比试验,试验结果表明:大开孔率的圆弧形波浪形孔筛板,透水性好,有效的降低了透筛物的数量和灰分.该结构为动筛跳汰机筛板设计提供一定的基础依据.%In view of the questions such as existing rectangle hole sieve plate small opening rate,poor permeability,the material easy to plug mesh,and so on,by adopting the combination of theoretical research and experimental analysis method,the sieve plate penetrating mechanism and the formation reason of screening material were analyzed and the rectangular hole opening rate of sieve plate was theoretically calculated.In order to increase the opening rate,by optimizing design of circular arc form wavy hole sieve plate,the theoretical opening rate relative to the straight bar type rectangular hole sieve plate was increased 10.2％,the industrial comparison tests which show that circular arc form wavy hole sieve plate which is of Large opening rate has good permeability,which effectively reduces the Screening material number and ash content.The structure of circular arc form wavy hole sieve plate provides basic referrence for moving sieve jig sieve plate design.
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