Design and experimental validation of the high-speed counter-rotating thresher for pomegranate aril extraction
Abstract
This study presents the design and experimental validation of a high-speed, drum-type pomegranate thresher driven by an innovative single-drive, multi-shaft transmission system. This design integrates crushing, feeding, and threshing into a compact unit, significantly reducing mechanical complexity and energy consumption. Finite element analysis verified the structural integrity of key components under operational loads. Systematic experiments identified an optimal speed of 220 r/min, achieving a threshing efficiency of 28.6 pieces/min, a peel removal rate of 88.3%, and an aril damage rate of 12.6%. The incorporation of a pre-crushing mechanism enhanced overall efficiency by 30.6%, a performance gain analyzed as a trade-off against a manageable increase in aril damage. The device demonstrated robust adaptability, processing fresh and stored pomegranates at rates of 33.9 and 27.9 pieces/min, respectively, while revealing critical correlations between pomegranate physical properties and threshing outcomes. This work provides an efficient and scalable solution for industrial pomegranate processing and establishes a foundation for future intelligent control systems.
Keywords: pomegranate, high-speed thresher, drum-type thresher, strength analysis
DOI: 10.25165/j.ijabe.20261901.10057
Citation: Ma P F, Zhu A B, Zhang J, Mao H, Zheng C L, Huang J P, et al. Design and experimental validation of the high-speed counter-rotating thresher for pomegranate aril extraction. Int J Agric & Biol Eng, 2026; 19(1): 302–308.
References
[1] Siddiqui S A, Singh S, Nayik G A. Bioactive compounds from pomegranate peels-Biological properties, structure–function relationships, health benefits and food applications–A comprehensive review. Journal of Functional Foods, 2024; 116: 106132.
[2] Kandylis P, Kokkinomagoulos E. Food applications and potential health benefits of pomegranate and its derivatives. Foods, 2020; 9（2）: 122.
[3] Yu X H, Shen C Y. Current status and promotion prospects of the pomegranate industry in China. Rural Science and Technology, 2019; 9（22）: 36–37. （in Chinese）
[4] Li F, Qin C H, Ding Z Q. Research progress on pomegranate peel in traditional Chinese and western medicine. Guide China Med, 2022; 20（25）: 69–71. （in Chinese）
[5] Tian H L, Qu Y C, Zhou Q H, Huang R T, Yin Z G, Fan C Y, et al. Research progress on development and application of homologous pomegranate for medicine and food. Cereal & Food Industry, 2022; 29（3）: 27–31. （in Chinese）
[6] Xu Y F, Zhao S J, Fei P, Xiang J L, Shi C, Xia X D. Research progress on antimicrobial effects and application of pomegranate peel extract. Food & Machinery, 2021; 37（2）: 215–219. （in Chinese）
[7] Zhang J, Ma B, Wang M, Wang H, Gao Y J. Design and research of pomegranate threshing machine. The Journal of New Industrialization, 2019; 9（12）: 64–67. （in Chinese）
[8] Wang M, Zhang Y O, Liu K Y, Dong X H, Wang X, Yin J C. Parameter optimization and test of vibration type pomegranate threshing device. Journal of Agricultural Mechanization Research, 2022; 44（4）: 188–192. （in Chinese）
[9] Fu J, Chen Z, Han L J, Ren L Q. Review of grain threshing theory and technology. Int J Agric & Biol Eng, 2018; 11（3）: 12–20.
[10] Wang R X, Zhao X P, Ji J T, Jin X, Li B. Design and performance analysis of tangential-axial flow threshing device for oat harvester. Int J Agric & Biol Eng, 2021; 14（6）: 61–67.
[11] Di Z F, Cui Z K, Zhang H, Zhou J, Zhang M Y, Bu L X. Design and experiment of rasp bar and nail tooth combined axial flow corn threshing cylinder. Transactions of CSAE, 2018; 34（1）: 28–34. （in Chinese）
[12] Wang Z B, Wang Z W, Zhang Y P, Yan W X, Chi Y J, Liu C Q. Design and test of longitudinal axial flexible hammer-calw corn thresher. Transaction of CASE, 2020; 51（S2）: 109–117. （in Chinese）
[13] Zhu X L, Chi R J, Du Y F, Qin J H, Xiong Z X, Zhang W T, et al. Experimental study on the key factors of low-loss threshing of high-moisture maize. Int J Agric & Biol Eng, 2020; 13（5）: 23–31.
[14] Li X Y, Du Y F, Mao E R, Zhang Y A, Liu L, Guo D F. Design and experiment of corn low damage threshing device based on DEM. Int J Agric & Biol Eng, 2023; 16（3）: 55–63.
[15] Liu Y X, Zhao W Y, Dai F, Shi R J, Zhang S L, Fu Q F. Optionmization of the working parameters and performance experiment of diameter changes and varied-line-spacing seed corn threshing model machine. Journal of Chinese Agricultural Mechanization, 2020; 41（11）: 66–74. （in Chinese）
[16] Xiang S N, Fu J, Zhang Y C. Research progress of corn threshing technology and device. Journal of Chinese Agricultural Mechanization, 2019; 40（3）: 95–101. （in Chinese）
[17] Dai F, Zhao Y M, Liu Y X, Shi R J, Xin S L, Fu Q F, et al. Analysis and performance test on dynamic aril corn threshing and conveying process with variable diameter and spacing. Int J Agric & Biol Eng, 2023; 16（2）: 259–266.
[18] Yilmaz D, Gökduman M E. Determination of threshing and separation unit performance of rosemary plants. Int J Agric & Biol Eng, 2021; 14（6）: 237–243.
[19] Song Z C, Diao P S, Chen M Z, Miao H Q, Xu G F, Wang J X. Analysis design and test of longitudinal flow corn threshing and separating plant. Agricultural Mechanization Research, 2022; 44（2）: 58–66. （in Chinese）
[20] Wang S S, Lyu W Z, Jin X, Yu S, Guo H, Chen Z H. Calibration of discrete element simulation parameters and threshing test for complete wheat plants. Int J Agric & Biol Eng, 2025; 18（3）: 12–18.
[21] Yang S P, Zhang Z G, Guo G, Zhang Y, Qiu S L, Ye Y X. Optimal design and test of the flexible clamping device for safflower. Int J Agric & Biol Eng, 2025; 18（3）: 19–24.
[22] Denarda A R, Bertetto A M, Carbone G. Designing a low-cost mechatronic device for semi-automatic saffron harvesting. Machines, 2021; 9（5）: 94.
[23] Sun H Y, Ma H Q, Zhao Y Z. DEM investigation on conveying of nonspherical particles in a screw conveyor. Particuology, 2022; 65: 17–31.
[24] Zhu Z S, Zhang J X, Yang L L, Mao W L, Wang Y C. Design of apricot core-breaking device with squeeze-tooth-to-roller and analysis of the strength of pressing roller. Food and Machinery, 2021; 37（5）: 115–119, 202. （in Chinese）
[25] He Y C, Wang X J, Cao S L, Wang M, Liu H T. Design and experimental research on twin-roll crushing device for walnut shelling. Jiangsu Agricultural Science, 2012; 40（9）: 350–352. （in Chinese）
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