Operating parameter optimization and experiment of spiral outer grooved wheel seed metering device based on discrete...

Area of Science:

• Agricultural Engineering
• Precision Agriculture
• Mechanical Design

Background:

• Seed metering devices are crucial for uniform crop planting.
• Optimizing parameters of spiral outer grooved wheel devices is essential for agricultural efficiency.
• Existing methods may not fully capture the complex dynamics of seed metering.

Purpose of the Study:

• To analyze and optimize the metering parameters of a spiral outer grooved wheel seed metering device.
• To establish a regression model correlating key parameters with metering performance.
• To determine optimal working parameters for enhanced seed metering accuracy.

Main Methods:

• Discrete Element Method (EDEM) simulations were employed to model seed metering processes.
• Box-Behnken experimental design was used to establish a regression model.
• Independent variables included groove rotation speed, lead angle, and groove number.
• Coefficient of variation was used as the response variable to assess performance.

Main Results:

• Groove rotation speed and lead angle significantly influenced metering performance.
• Optimal parameters were identified as 43.15 r/min rotation speed, 9.81° lead angle, and 16 groove number.
• Verification tests showed a coefficient of variation of 7.20% with a 4.97% relative error to simulations.

Conclusions:

• The discrete element method and theoretical analysis reliably optimize seed metering device parameters.
• The identified optimal parameters significantly improve the performance of spiral outer grooved wheel seed metering devices.
• This research provides a foundation for developing more accurate and efficient agricultural machinery.