农业机械学报2026，Vol.57Issue(7)：264-273,316,11.DOI:10.6041/j.issn.1000-1298.2026.07.024
气送式籽棉异纤除杂装置结构设计与流场特性优化
Design and Flow Field Optimization of Pneumatic Foreign Fiber Removal Device for Seed Cotton
摘要
Abstract
Aiming to address the airflow regulation challenges during visual detection and foreign fiber(e.g.,film)removal in seed cotton,finite element software was used to simulate and calculate relevant parameters,analyze their impact on flow field characteristics,in order to optimize the flow field structure and improve impurity removal efficiency and conveying stability.A three-dimensional multiphysics geometric model was developed,incorporating key components such as the seed cotton inlet,impurity removal outlet,cotton outlet,nozzles,and auxiliary air inlets.Based on the SST k-ω turbulence model,the systematic simulation analysis was conducted on the angle and velocity of the auxiliary air inlets.The simulation results revealed that when the seed cotton inlet velocity was set as 9 m/s,the impurity removal air inlet velocity as 1 m/s,the cotton outlet auxiliary air inlet velocity as 6 m/s,and the auxiliary airflow angle as 15°,the airflow velocity distribution at both the impurity removal and cotton outlets was optimized,effectively meeting the operational requirements for foreign fiber separation and cotton discharge,while minimizing flow blockage and recirculation within the conveying pipeline.Prototype testing under the optimized simulation parameters confirmed that the integrated system,combined with machine vision-based recognition,achieved a foreign fiber removal rate of 90%and a processing capacity of 4 tons of seed cotton per hour.关键词
籽棉/除杂装置/数值模拟/流场优化Key words
seed cotton/impurity removal device/numerical simulation/flow field optimization分类
农业科技引用本文复制引用
费叶琦,陈东胜,林义,周志鹏,刘英,倪超..气送式籽棉异纤除杂装置结构设计与流场特性优化[J].农业机械学报,2026,57(7):264-273,316,11.基金项目
新疆2022年自治区重大科技专项(2022A01009) （2022A01009）
