Compression Molding Characteristics of Seed Cotton and Damage from Cottonseed Crushing

Xuewen Fu, Ximei Wei, Meng Wang, Hongwen Zhang (), Lei Wang, Jun Wang and Yuanzhao Zheng
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Xuewen Fu: College of Mechanical Electrical Engineering, Shihezi University, Shihezi 832000, China
Ximei Wei: College of Mechanical Electrical Engineering, Shihezi University, Shihezi 832000, China
Meng Wang: College of Mechanical Electrical Engineering, Shihezi University, Shihezi 832000, China
Hongwen Zhang: College of Mechanical Electrical Engineering, Shihezi University, Shihezi 832000, China
Lei Wang: College of Mechanical Electrical Engineering, Shihezi University, Shihezi 832000, China
Jun Wang: College of Mechanical Electrical Engineering, Shihezi University, Shihezi 832000, China
Yuanzhao Zheng: College of Mechanical Electrical Engineering, Shihezi University, Shihezi 832000, China

Agriculture, 2024, vol. 14, issue 1, 1-16

Abstract: This study investigated the impact of compression molding parameters on the post-molding characteristics of machine-harvested seed cotton and aimed to determine the optimal compression molding parameters. The closed compression test of seed cotton and force analysis on a single cottonseed clarified the boundary conditions for cottonseed crushing and the relationship between crushing rate and compressive force. A seed cotton compression test bench facilitated single-factor and four-factor, three-level quadratic regression orthogonal experiments, varying the moisture content, initial density, compression force, and holding time. Variance analysis revealed each factor’s influence on the dimensional stability coefficient. Utilizing Design Expert 13.0.5, the optimal compression molding parameter ranges were identified: 6–11.7% moisture content, 47.87–74.84 kg/m 3 initial density, 3–5.32 kN compression force, and 50–239.75 s holding time. Software predictions within this range indicated an optimal cottonseed crushing rate and dimensional stability coefficient of 2.853% and 3.274, respectively. Further verification experiments yielded a cottonseed crushing rate and dimensional stability coefficient of 2.888% and 3.282, respectively, with a maximum error of 3.85%, validating the model and optimized parameters. Therefore, strictly controlling seed cotton compression molding parameters was shown to reduce the cottonseed crushing rate and dimensional stability coefficient. These findings offer crucial theoretical insights for developing seed cotton compression processes and selecting parameters for cotton harvesting and packing devices.

Keywords: seed cotton; compression; molding characteristics; cottonseed damage; expression (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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