Enhancing the Performance of Sunflower Threshing Machines through Innovative Enhancements

Khaled Abdeen Mousa Ali, Changyou Li, Han Wang (), Ahmad Mostafa Mousa and Marwa Abd-Elnaby Mohammed
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Khaled Abdeen Mousa Ali: College of Engineering, South China Agricultural University, Guangzhou 510642, China
Changyou Li: College of Engineering, South China Agricultural University, Guangzhou 510642, China
Han Wang: College of Engineering, South China Agricultural University, Guangzhou 510642, China
Ahmad Mostafa Mousa: College of Agricultural Engineering, AL-Azhar University, Cairo 11651, Egypt
Marwa Abd-Elnaby Mohammed: Agricultural Engineering Research Institute (AENRI), Agricultural Research Center (ARC), Dokki, Giza 12611, Egypt

Agriculture, 2024, vol. 14, issue 2, 1-12

Abstract: Improving the performance of the threshing process is of utmost importance in enhancing the quality of sunflower seeds and minimizing power consumption in sunflower production. In this study, we developed a modified sunflower threshing machine by incorporating two types of threshing rotors, namely the angled rasp bar rotor and the tine bar rotor, as compared to the round bar rotor. The performance of these rotors was evaluated under various rotational speeds (150, 200, 250, and 300 rpm) and concave clearances (10, 15, and 20 mm). The evaluation parameters included machine throughput, the specific energy of threshing, the percentage of damaged seeds, the percentage of unthreshed seeds, and threshing efficiency. The results indicate that the specific energy decreased with an increase in rotor speed and a decrease in concave clearance, with the tine bar rotor exhibiting the lowest values. Threshing efficiency showed an increasing trend with higher rotor speeds and reduced concave clearance. The modifications made to the rotor design resulted in an enhanced threshing efficiency, with an improvement from 96.30% to 97.93% achieved at a rotor revolving speed of 300 rpm and a concave clearance of 10 mm. Moreover, the specific energy consumption reduced from 9.65 kW·h/ton to 5.09 kW·h/ton under the same operational conditions. These findings highlight the efficacy of the novel rotor design modifications in optimizing the performance of the stationary sunflower threshing machine, leading to improved efficiency and reduced energy consumption in sunflower seed threshing operations. Given its performance characteristics, this machine exhibits potential suitability for sunflower farms of small to medium scale.

Keywords: sunflower thresher; development; machine performance; optimization (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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