Design of Deep-Fertilization Mechanism With Deformed Gears and Performance Tests

Abstract

Deep-fertilization mechanism is a key part of deep-fertilization liquid fertilizer applicator. To obtain a good-performance deep-fertilization mechanism, this study developed a deep-fertilization mechanism with deformed gears and designed a deformed gear fertilization test bench. Single-factor and central composite design tests were performed with the planet carrier, spray hole size and pump pressure as the test factors, and the fertilizer amount as the test index. The results of the single-factor test showed a linear functional relationship between fertilizer amount and pump pressure, an exponential functional relationship between planet carrier velocity and fertilizer amount, and an exponential relationship between spray hole size and fertilizer amount. The rotating and perpendicular test data were analyzed and optimized using Design-Expert 8.0.5 software. The result of the optimization is: 10.5ml of fertilizer amount with pump pressure 0.36MPa, planet carrier velocity 82 r/min, and spray hole size 2 mm. The test result can meet the agronomic requirements.

Design and Test of High-Speed Fertilizer Point-Applied Device

“…By proposing and simulating three fertilizer guiding mechanisms and analyzing the physical parameters, it was determined that the optimal radius of curvature of the mechanism is 600 mm, which can significantly improve the uniformity of fertilizer application by 49.02%. Feng et al, (2021), presented a deep fertilizer application mechanism with deformed gears and a corresponding test rig, where factors such as planetary carrier, spray hole size and pump pressure were optimized to meet the agronomic requirements. Hu et al, (2020), introduced a lightweight organic fertilizer distributor, which ensures the accuracy and uniformity of fertilizer application and reflects the stability and reliability of the control system by establishing a mechanical model and a mathematical model of fertilizer output.…”