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Keywords = arc-shaped sawteeth

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18 pages, 6006 KiB  
Article
Design and Testing of an Impurity Removal Device in a Stripper-and-Stick Cleaner for Machine-Harvested Long-Staple Cotton
by Jie Wu, Hui Lin, Heng Jiang, Xinsheng Bi, Pahirdin Ablat, Wenpu Liu and Jianhao Dong
Processes 2025, 13(4), 1019; https://doi.org/10.3390/pr13041019 - 28 Mar 2025
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Abstract
This study aims to address the low cleaning efficiency (73.12%) and high cotton loss rate (12.50%) of existing stripper-and-stick cleaners when processing machine-harvested long-staple cotton. Based on the material characteristics of Xinjiang long-staple cotton, a novel impurity removal device was designed specifically for [...] Read more.
This study aims to address the low cleaning efficiency (73.12%) and high cotton loss rate (12.50%) of existing stripper-and-stick cleaners when processing machine-harvested long-staple cotton. Based on the material characteristics of Xinjiang long-staple cotton, a novel impurity removal device was designed specifically for its cleaning. A mechanical model of cotton–impurity interaction was established to guide the design of U-shaped saw cylinder parameters. Static analyses conducted via Ansys Workbench revealed that both straight and arc-shaped sawteeth exhibited negligible deformations (≤4.73 × 10−4 mm) and von Mises stresses (≤9.52 MPa), meeting the practical operational requirements. Through orthogonal experiments (sawtooth type, linear velocity, and feed speed), the optimal operating parameters were determined as arc-shaped sawteeth, 7.5 m/s linear velocity, and 11 t/h feed speed. Prototype testing demonstrated that under these parameters, the impurity removal device achieved an average cleaning efficiency of 82.42% (a 9.30% improvement over conventional devices) and an average cotton loss rate of 8.34% (a 4.16% reduction compared to conventional devices). This study provides a valuable reference for the design and optimization of stripper-and-stick cleaners specifically tailored for machine-harvested long-staple cotton. Full article
(This article belongs to the Section Manufacturing Processes and Systems)
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