Modeling the Discharge Rate of a Screw Conveyor Considering Hopper–Conveyor Coupling Parameters

Peng Chen, Tianci Huang, Bei Wu (), Huaiyuan Qian, Fangping Xie, Baohua Liu, Dawei Liu and Xu Li
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Peng Chen: College of Mechanical and Electrical Engineering, Hunan Agricultural University, Changsha 410128, China
Tianci Huang: College of Mechanical and Electrical Engineering, Hunan Agricultural University, Changsha 410128, China
Bei Wu: College of Mechanical and Electrical Engineering, Hunan Agricultural University, Changsha 410128, China
Huaiyuan Qian: College of Mechanical and Electrical Engineering, Hunan Agricultural University, Changsha 410128, China
Fangping Xie: College of Mechanical and Electrical Engineering, Hunan Agricultural University, Changsha 410128, China
Baohua Liu: College of Water Resources & Civil Engineering, Hunan Agricultural University, Changsha 410128, China
Dawei Liu: College of Mechanical and Electrical Engineering, Hunan Agricultural University, Changsha 410128, China
Xu Li: College of Mechanical and Electrical Engineering, Hunan Agricultural University, Changsha 410128, China

Agriculture, 2024, vol. 14, issue 7, 1-16

Abstract: Developing a flow rate model for the screw feeder and optimizing discharge performance are crucial for achieving automated intelligent precision feeding. This study constructs a mass flow rate model for screw conveyors, considering the coupled structural parameters of the hopper and screw conveyor. The model is developed using single-factor tests and central composite design (CCD) response surface tests and is validated through actual discharge tests. Results indicate that the discharge rate in the hopper–screw conveyor system is primarily influenced by the screw conveyor itself. Among the structural parameters, the hopper inclination angle and the hopper discharge opening length significantly affect the filling coefficient. Validation tests show an average error of 6.8% between the predicted and simulated mass flow rates and 5.0% with the actual mass flow rate, demonstrating the model’s high precision and accuracy.

Keywords: hopper; screw conveyor; discharge rate model; DEM; central composite design (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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