Authors

Abstract

Straw found in the field can be conveniently stored and transported through mechanical packaging, and it undergoes crushing during its utilization. The effectiveness of the crushing process directly impacts the efficiency of material utilization. However, current crushing devices available in the market lack specialized mechanisms suitable for the unique characteristics of round corn stalks. To address this issue, the necessary simulation parameters were determined, and an experiment was conducted using the ternary quadratic combination test method. The test factors considered were the center height difference of the knife roller, lower roller speed, and cutter thickness. The response value of the experiment was the material crushing rate. By analyzing the results, the optimal structural parameters were identified. These included a center height difference of 390 mm for the knife roller, a lower roller speed of 14 rpm, and a cutter thickness of 110 mm. With these parameters, the crushing rate of the round straw crushing device reached 93.77%, and the particle passing ratio was 98.52%. To validate the research findings, a test device was constructed and used to confirm the reliability of the obtained results.

Abstract in Chinese

田间秸秆主要通过机械打包方便进行存储运输,在其使用时进行破碎处理,破碎效果直接影响物料利用效率. 目前,市面上的破碎装置缺乏适用于圆包玉米秸秆物料特性的专用破包装置. 测定必要仿真参数,并基于三元二次组合试验方法进行试验. 确定了以刀辊中心高度差, 下置辊转速和刀具厚度为测试因子,以物料破碎率为测试响应的响应值,得出了最优结构参数,即刀辊中心高度差 390 mm,下置辊转速 14rpm,刀具厚度为 110 mm,此时圆包秸秆破碎装置的破碎率为 93.77%,颗粒通过比例为98.52%,并据此搭建试验装置验证研究结果可靠.