Optimization and Experiment of Fertilizer-Spreading Device for Wheat Wide-Boundary Sowing Planter under Full Rice Straw Retention

Luo, Weiwen; Wu, Feng; Xu, Hongbo; Wang, Gongpu; Wang, Bokai; Yang, Hongguang; Hu, Zhichao

doi:10.3390/agronomy12102251

Cited by 5 publications

(4 citation statements)

References 16 publications

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“…It is believed that this phenomenon is caused by the shape of the wheat seeds formed on the DEM with a sphericity of 60% [69]. If the sphericity of the particles was close to 90%, the particles would rotate rather than slide [73,81]. If the wheat spreader inclination exceeds 17.5 degrees, the levels of other factors are limited.…”

Section: Results and Analysis Of The Wheat Separator Hump Parametersmentioning

confidence: 99%

Optimal Design and Discrete Element Method Model Development of the Acute Angle Hoe Opener for No-Till System

Wang,

Kang,

Adilet

et al. 2024

Processes

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A specialized hoe opener was engineered for no-till systems to apply substantial amounts of wheat seeds and granular fertilizers, effectively suppressing early stage weeds. This distinctive hoe opener plants wheat seeds within a 120 mm wide horizontal band, positioning granular fertilizers precisely at the band’s center, all accomplished in a single pass. Notably, the design excels at covering the fertilizer with soil aggregates, compacting it through a wheat separator, and concurrently depositing wheat seeds from above. Our primary research objectives centered on achieving a consistent seedbed post-fertilizer application and ensuring a uniform distribution of wheat seeds within the horizontal band. The DEM (Discrete Element Method) was exploited to optimize the hoe opener’s parameters. Through extensive simulations and comparisons with experimental outcomes, an optimal wing orifice AB length of 60 mm was identified, effectively covering granular fertilizers with soil aggregates and achieving compaction through the wheat separator. Furthermore, parameters of the wheat seed separator’s hump were fine-tuned using the Box–Behnken algorithm, resulting in an optimal dimension of 40 mm for the top radius (A), 140 degrees for the top angle (B), and 90 mm for the bottom length (C).

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Section: Results and Analysis Of The Wheat Separator Hump Parametersmentioning

confidence: 99%

Optimal Design and Discrete Element Method Model Development of the Acute Angle Hoe Opener for No-Till System

Wang,

Kang,

Adilet

et al. 2024

Processes

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“…In order to analyze the significance of the effect of factor changes on indicators and the response trend, the L9 (3 The test results show that: the number of teeth x1 and pressure angle x2 of the fertilizer wheel have significant effects on the fertilizer crushing rate y1 and the fertilizer uniformity coefficient y2 ((0.01<P<0.05), the number of teeth and pres- Since the effect of the fertilization gap on fertilizer crushing rate and the fertilizer uniformity coefficient is insignificant [36,37]. According to the preliminary study and market research, it is known that the smaller the fertilization gap, the lower the manufacturing cost of the fertilizer drainage device, and the more significant the fertilization gap, the larger the flow of the fertilizer drainage device and the fertilization gap = 6mm is selected for comprehensive analysis.…”

Section: Experimental Design and Resultsmentioning

confidence: 99%

Simulation Analysis and Test of Gap Squeeze Gear Type Fertilizer Discharger for Granular Fertilizer Containing Caking

Dun

Mao

et al. 2023

Preprint

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Precision fertilizer application technology is necessary to improve fertilizer utilization efficiency in agricultural production. To achieve precision fertilizer application and solve problems in production practice that contain the structure problem of the traditional mechanical fertilization systems, and the fertilizer discharger is blocked and can not achieve uniform fertilization because the fertilizer contains caking fertilizer in response to the characteristics of conventional fertilizers containing caking fertilizers, innovative design and system experimental simulation studies were carried out. A gap squeeze gear-type fertilizer dis-charger was designed, and fertilizer caking crushing was achieved by configuring the gear gap squeezing method. Combined with engineering practice, two mixed fertilizers (granular fertilizer with caking fertilizer) were constructed and blended by using BPM (Hertz Mindlin with bonding) discrete element, the fertilizer discharger was used as the object of study to simulate and experimentally investigate the process of crushing and discharging of mixed fertilizer and the process of uniform discharging of mixed fertilizer. The simulation test model of the separation device with vibration screen of the caking fertilizer and granular fertilizer after fertilizing was established to study the crushing rate of the caking fertilizer, and the simulation model with collection plate of the uniformity of the mixed fertilizer discharge was based on to explore the uniformity of the mixed fertilizer. The L9 (34) orthogonal test was carried out under the conditions with the number of teeth, pressure angle, and fertilization gap as test factors and the fertilizer crushing rate and fertilizer uniformity coefficient as test indicators. The test results showed that the number of teeth and pressure angle had significant effects (0.01 < P < 0.05) on the crushing fertilizer rate and fertilizer uniformity, and the fertilization gap had no significant impact (P༞0.05) on the crushing fertilizer rate and fertilizer uniformity. In the optimal combination of parameters, the number of teeth 6, pres-sure angle 15 °, fertilization gap 6mm operation, the coefficient of uniformity of crushing fertilizer rate and fertilizer uniformity were 74.89% and 17.21%, respectively. The bench test results compared with the outer groove wheeled fertilizer drainer showed that the optimized gap squeeze gear type fertilizer discharger has higher fertilizer crushing quality at different speeds, and the fertilizer crushing rate and uniformity were79.69% and 18.56%, respectively, within the error range. The simulation results are in general agreement. This study provides evidence for fertilizer discharger structure design and enhances the effect of fertilizer discharger crushing.

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“…The operating parameters of the implements, such as forward speed (V 0 ), seeding quantity (S Q ), and rotary tillage speed (N T ), influence the lateral relative error of wheat seeds during operation [34]. The parameter ranges of the implement were forward speed: 0.8~1.6 m/s, seeding quantity: 150~300 kg/hm 2 , and rotary tillage speed: 180~280 rpm.…”

Section: Analysis Of Relative Errorsmentioning

confidence: 99%

Optimization and Accuracy Analysis of a Soil–Planter Model during the Sowing Period of Wheat after a Rice Stubble Based Discrete Element Method

Luo,

Chen,

Guo

et al. 2023

Agriculture

Self Cite

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The soil during the sowing period of wheat after rice stubble cannot be accurately described by existing models and parameters with DEM because of its high moisture content and strong viscosity. The purpose of this study is to conduct an overall simulation of high-viscosity paddy soil and to analyze the accuracy of the model. Based on the results of an unconfined compression test and shear test, the range of bond parameters is preliminarily determined by a simulation test. Through the P-BD test and RSM test, the parameters with significant influence are determined to be normal stiffness per unit area (SN), shear stiffness per unit area (SS), and critical shear stress (CS), and an optimized combination of these parameters is obtained. Based on the optimized model, the error range and error generation mechanism of the model are analyzed under different operating parameters. The results show that the optimal parameter combination is SN of 1.07 × 107 N/m3, SS of 0.70 × 107 N/m3, and CS of 0.35 × 105 Pa, corresponding to a compression force of 120.1 N and a shear force of 7.70 N. With an increase in forward speed or seeding quantity or a decrease in rotary plowing speed, the model accuracy tends to increase, and the range of relative errors was found to be from 8.8% to 28.4%. The results can provide a research basis for the study of the motion state of seeds under soil. It can also further enrich parameter data of soil discrete element simulation models and provide a reference for related research studies.

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Optimization and Experiment of Fertilizer-Spreading Device for Wheat Wide-Boundary Sowing Planter under Full Rice Straw Retention

Cited by 5 publications

References 16 publications

Optimal Design and Discrete Element Method Model Development of the Acute Angle Hoe Opener for No-Till System

Optimal Design and Discrete Element Method Model Development of the Acute Angle Hoe Opener for No-Till System

Simulation Analysis and Test of Gap Squeeze Gear Type Fertilizer Discharger for Granular Fertilizer Containing Caking

Optimization and Accuracy Analysis of a Soil–Planter Model during the Sowing Period of Wheat after a Rice Stubble Based Discrete Element Method

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