网状滚筒式机采籽棉残膜分离机的设计  

Design of mesh roller-type separator for machine-harvested seed cotton and film remnant

作　　者：坎杂[1] 郭文松[1] 张若宇[1] 李成松[1] 安红磊[1] 

机构地区：[1]石河子大学机械电气工程学院新疆生产建设兵团农业机械重点实验室,石河子832003

出　　处：《农业工程学报》2011年第6期95-99,F0002,共6页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家十一五科技支撑项目(2009BADB0B01);兵团科技支疆项目(ZJ2009011)

摘　　要：新疆棉花特殊的地膜栽培模式导致在机械采收过程中容易混入残留地膜(简称残膜),残膜的存在是降低机采籽棉质量等级的重要因素之一。为有效清除机采籽棉中混有的残膜,设计了网状滚筒和正压风力结合的分离设备,建立了分离对象的运动控制方程,借助离散相模型(DPM)对机采籽棉残膜分离机的籽棉与残膜的分离原理进行了分析,通过数学模型分析的籽棉运动轨迹和基于CFD仿真分析的籽棉运动轨迹阐释了残膜的整个分离过程,最后对分离机籽棉入口处流场速度进行了试验。结果表明,在保证分离效果的前提下,得到了籽棉在入口处最佳速度为4.5m/s。该文提出的分离原理和设计方案可以为具有类似特性差异的农产品分离提供理论依据和借鉴。The plastic mulch culture of cotton in Xinjiang results in the mixing of plastic residual into cotton in the mechanical harvesting process.What’s more,the presence of film remnant is one of the key factors reducing the quality level of mechanical harvested cotton.To clean the film remnant more efficiently,one kind of mesh roller-type cotton and film remnant separator was designed.The motion equations of separating objects in separation device were constituted,and the DPM model was used to analyze the separation principle of unginned cotton and film remnant.As a result,unginned cotton trajectories based on mathematical model and CFD simulation analysis explained the remnant membrane separation process.The effect of flow speed at the entrance of the separation equipment was tested,and the results showed that the best cotton inlet velocity was 4.5 m/s with acceptable separation effect.

关 键 词：分离机 残膜 设计 机采籽棉 气固分离 离散相模型 

分 类 号：S266.7[农业科学—农业水土工程]