基于交叉气流的茶鲜叶团聚体分散装置设计与试验

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中图分类号：S571.1；TS272 文献标识码：A文章编号：1000-369X（2025）06-1066-17

Abstract：Sorting fresh tea leaves canachieve high value tea production，but fresh tea leavesare prone to agglomerationand dificult to disperse，which affects the sorting resultsand efficiency.In this paper，disperse aggregates in fresh tea leaves by cross airflow.The fresh tea leaf agglomeration dispersing device based on cross airflowconsists ofaframe，opposite-facing photoelectric sensor，conveyer belt，sliderail，observationplate，movable hinge，air nozle and other components.Based on CFD-DEM joint simulation，the influence of the air nozzleoffset， air nozzle line spacing，and tilt angle ofair nozle on the dispersion degree was analyzed.Design-Expert13 software was used todesign athree-factor，thre-levelorthogonal test protocol，and theoptimal parametercombination was obtained using response surface optimization.The experimental results show that when the air nozzle was arranged with theoptimal combinationof parameters，therectangular areaof dispersed fresh tea leaves obtained after dispersion was 0.343m2 ，and the percentage of fresh tea leavesareawas O.241，which were 90.6% and 50.6% higher than the tea fresh leaf material without dispersion，respectively.The relative erors between the experimental and predicted values was less than 5% . This device achieved effective dispersion of fresh tea leaf agglomerates， providing ideal material pretreatment conditions for subsequent accurate sorting.

Keywords： fresh tea leaf agglomeration，dispersing device， cross airflow，simulationanalysis

中国是茶叶原产国和全球最大的产销国[1]。（剩余14874字）