Discharge uniformity and metering accuracy are essential for precision fertilization. An inclined screw fertilizer metering device with a spherical buffering outlet was designed and optimized using the discrete element method (DEM) and bench experiments. A particle-flow model was established using EDEM (DEM simulation software) to evaluate the effects of conveying inclination angle and outlet accumulation length on discharge performance using the coefficient of variation (CV), standard deviation, amplitude, and pulsation degree. Single-factor tests indicated that an inclination angle of 12° and an accumulation length of 32 mm produced favorable discharge performance. Two-factor optimization identified 13.5° and 40 mm as the optimal combination, yielding the lowest CV (2.36%) and standard deviation (51.88). Bench experiments further verified the performance of the optimized device. Compared with a conventional fluted-wheel fertilizer metering device, the optimized screw device reduced the average discharge error from 8.94% to 3.35% and achieved average CV values of 5.91%, 4.39%, and 4.44% under low-, medium-, and high-discharge-rate conditions, respectively. These results show that optimizing the inclination angle and outlet accumulation length can effectively improve fertilizer discharge uniformity and metering accuracy.
To address parameter optimization and fertilization uniformity of a fluted-wheel fertilizer metering device for granular organic fertilizer, a 3D-scanned fertilizer model was constructed, and an EDEM fertilization simulation model was established. The Poisson’s ratio and elastic modulus of the fertilizer were determine...
Wan Chang, Jia-Jun Zhang, Zhi-Hui Qi et al.· INMATEH Agricultural Enginee...· 0 citations
To enable automatic and precise flower transplanting, a soil pickup and separation device was designed for substrate filling in greenhouse flower transplanting operations. The soil-conveying mechanism of the soil pickup auger was analyzed through theoretical analysis and discrete element simulation. Taking the soil pic...
Uniform intra-row seed spacing is essential for maintaining an optimum plant population in green gram, where the recommended agronomic spacing is about 10 cm. Conventional ground-driven seed drills often produce irregular spacing because seed release depends on wheel motion and slip. To improve placement accuracy,...
Madhusudan B. S., H. Kushwaha, Adarsh Kumar et al.· Discover Applied Sciences· 0 citations
To address poor mixing uniformity, unstable control accuracy, and limited flexibility in concentration adjustment during liquid fertilizer deep application, this study developed an online liquid fertilizer blending system integrating a Venturi injector, a helical static mixer, an electrical conductivity (EC) detection...
Accurate fertilizer application is important to improve fertilization efficiency and reduce environmental impact. However, fertilizer dosing in agricultural practices is often still inaccurate due to the limitations of simple application tools. Therefore, the development of a reliable fertilizer metering device is requ...
A. Azis, H. Mubarak, Dirga Satriawan et al.· IOP Conference Series: Earth...· 0 citations
Wide belt sowing is an innovative method to improve production. In order to ensure uniform for wheat wide belt sowing, this paper proposed a conical seed separator plate and optimized its critical structural parameters. Firstly, a mathematical model of conical seed separator plate was established, with cone radius, c...
Lei Liang, Qi-Shuo Ding, Ming-Da Zhou et al.· Frontiers of Mechanical Engi...· 0 citations
We use cookies to run the site and, with your consent, for analytics and to show ads.
See our Cookie Policy.
