Effect of Auxiliary Air-Suction Seed-Filling Structure on Seed Discharge Performance of Peanut High-Speed Seed-Metering Machine

Peng Guo, Bin Sun, Shuqi Shang, Jialin Hou (), Dongwei Wang (), Zhuang Zhao, Ahmed Elshafie, Xiaoshuai Zheng and Farid Eltoum
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Peng Guo: College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China
Bin Sun: College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China
Shuqi Shang: College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China
Jialin Hou: College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China
Dongwei Wang: College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China
Zhuang Zhao: College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China
Ahmed Elshafie: Yellow River Delta Intelligent Agricultural Machinery Equipment Industry Academy, Dongying 257300, China
Xiaoshuai Zheng: Yellow River Delta Intelligent Agricultural Machinery Equipment Industry Academy, Dongying 257300, China
Farid Eltoum: Yellow River Delta Intelligent Agricultural Machinery Equipment Industry Academy, Dongying 257300, China

Agriculture, 2025, vol. 15, issue 15, 1-28

Abstract: Aiming to resolve the problem of the poor peanut seed-filling effect under high-speed operation when developing high-speed peanut sowing with precision, a peanut precision seed-metering machine with an auxiliary air-suction seed-filling device was designed. Focusing on the force analysis of peanuts in the seed chamber, the peanut seed disturbance principle in the seed-metering machine for the blowing structure of an auxiliary air-suction seed-filling device was clarified. The seed-filling process was analyzed via DEM-CFD coupled simulation, and three factors affecting the seed-filling effect were identified, namely the seed-filling chamber ‘V’ angle γ , the bottom blow-air-hole cross-sectional area S , and the bottom blow-air-hole airflow velocity v q , and the ranges of values of the three factors were determined. The Box–Behnken test was conducted using the seed-filling index and leakage index as the indexes. The results show that the seed-filling chamber ‘V’ angle γ is 56.59°, the bottom blowhole cross-sectional area S is 1088.4 mm 2 , and the blowhole air velocity v q is 12.11 m·s −1 . At this point, the peanut seed suction qualification index and leakage index are optimal, the seed suction qualification index is 96.33%, and the seed leakage index is 2.59%. At the same time, the field test shows that a sowing operation speed of 8–12 km·h −1 , a qualified index > 93%, and a leakage index < 4.5% are required to meet the agronomic requirements of peanut precision sowing.

Keywords: peanut seed; seed-metering machine; auxiliary air-suction seed-filling device (AASD); seed motion (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: 2025
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