玉米秸秆皮穰分离机械运行参数优化试验  

Optimized test of running parameter on rind-pith separation equipment for corn stalk

作　　者：王德福[1,2] 于克强[2] 陈争光[2] 

机构地区：[1]河南农业大学机电学院,郑州450002 [2]东北农业大学工程学院,哈尔滨150030

出　　处：《农业工程学报》2013年第21期26-32,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：黑龙江省科技攻关资助项目(GA09B501);国家高技术研究发展计划(863计划)资助项目(2009AA043602)

摘　　要：为有效适应各季节玉米秸秆的皮穰分离加工及确定玉米秸秆皮穰分离机的运行参数,该文针对作者所设计的玉米秸秆皮穰分离机,在已经结构参数优化的基础上,又对除叶机构与剥穰机构进行了运行试验研究。通过多因素正交旋转组合试验确定除叶机构与剥穰机构的关键运行参数,结果表明：影响除叶率的显著因素是U型齿板底宽和秸秆喂入速度,齿辊转速有影响但不显著;影响剥穰率的主要因素及其顺序为秸秆喂入速度、剥穰辊转速、剥穰刀与支撑板间距。并通过综合已有研究及样机试验结果,确定主要运行参数为秸秆喂入速度1.2-1.3 m/s,除叶齿辊旋转线速度大于5 m/s,剥穰辊旋转线速度大于5.8 m/s时,该分离机对各季节玉米秸秆进行皮穰分离加工的适用性较好,且其生产率大于0.5 t/h,除叶率大于97.6%,剥穰率大于95.7%。With the development of agriculture in China, the total annual production of straw is over 700 million tons, including more than 200 million tons of corn stalk. In general, corn stalk was utilized as the common domestic fuel and livestock feed, and the remaining straw was burned in fields in the past, which led to waste of resources and pollution of environment. With economic development, technological progress, and the growing demand for resources（including energy resources）, valuable utilization of corn stalk is emphasized at home and abroad, such as separately using rind, pith and leaves to achieve maximum value according to their different chemical compositions. Therefore, rind-pith separation equipment for corn stalk has been developed in China. So far, the separating quality, adaptability, operational reliability and productive efficiency of rind-pith separation equipment for corn stalk are still low. Further research is needed, including deeply researching and developing the key mechanisms for rind-pith separation equipment.For effective separation of the rind and pith of a variety of corn stalk（especially corn stalk with a high moisture content obtained in the corn harvesting season） and determination of the operation parameters of rind-pith separation equipment, a leaf-stripping mechanism and pith-stripping mechanism of rind-pith separation equipment for corn stalk had been experimented on. By preliminary experiments and analysis, two stages of leaf-stripping technology of blasting, stripping and rubbing had been used and conformed. Key parameters of leaf-stripping mechanism and the pith-stripping mechanism had been determined by multi-factor orthogonal rotation combination experiments. By an analysis of the experiments for the leaf-stripping mechanism, the significant factor was the bottom width of the U groove plate and the feeding speed for corn stalk with the third significant factor being, the rotation speed of the leaf-stripping roll. For the pith-stripping mechanism, the most significant f

关 键 词：加工 分离 装备 玉米秸秆 皮穰 

分 类 号：S817.19[农业科学—畜牧学] S216.2[农业科学—畜牧兽医]