高透风率风分仓内输送装置的设计

Design of a Conveying Device for High-Permeability Air Separation Chambers

摘要: 为提高打叶复烤过程中风分仓的透风率与风场均匀性，本文设计了一种高透风率风分仓内输送装置。通过分析现有循环网带结构风阻大、透风率低的问题，提出了三种改进方案：变孔结构、百叶窗翻转结构及异形链传动结构，并从透风率、结构复杂度和改造成本等方面进行对比。最终选用异形链传动方案，实现了输送网带在下部完全打开、上部闭合承载的功能，显著提升透风率。经实际调试，该装置运行可靠，有效优化了风场分布，增强了烟叶浮选效果，降低了能量损耗，为解决叶片分离不彻底问题提供了可行的技术方案。

Abstract: To improve the air permeability and airflow uniformity in the air separation chamber during tobacco threshing and redrying processes, this study designed a novel conveying device for high-permeability air separation chambers. By analyzing the limitations of existing circular mesh belt structures, which exhibit high air resistance and low permeability, three improved solutions were proposed: variable-aperture structures, louver-flipping mechanisms, and specialized chain transmission systems. These designs were evaluated based on permeability, structural complexity, and retrofitting costs. The specialized chain transmission system was ultimately selected, achieving complete opening of the conveying mesh belt at the bottom while maintaining closed loading capacity at the top, significantly enhancing permeability. Practical tests confirmed the reliable operation of this device, which effectively optimizes airflow distribution, improves tobacco leaf flotation efficiency, reduces energy consumption, and provides a viable technical solution for addressing incomplete leaf separation.