Structural design and parameter determination for fluted-roller fertilizer applicator

Zeng, Shan; Tan, Yipeng; Wang, Yu; Luo, Xiwen; Yao, Lamei; Huang, Dengpan; Mo, Zewen

doi:10.25165/j.ijabe.20201302.4999

Cited by 16 publications

(18 citation statements)

References 15 publications

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“…Consisted of two semicircular blades, the butterfly valve rotates around the central axis at the desired angle for outlets of different sizes. As shown in Fig.2(d), the fertilizer discharge apparatus of GFS-D is a fluted roller, optimized in effective work length, flute diameter and number of flutes to meet the requirement of fertilizer discharge rate [21]. The rotational fluted roller forces the particle out at different rotational speeds, achieving stepless variablerate application.…”

Section: ) Fertilizer Discharge Apparatusmentioning

confidence: 99%

Test and Comprehensive Evaluation for the Performance of UAV-Based Fertilizer Spreaders

et al. 2020

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Section: ) Fertilizer Discharge Apparatusmentioning

confidence: 99%

Test and Comprehensive Evaluation for the Performance of UAV-Based Fertilizer Spreaders

et al. 2020

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“…It performs double bi-variable control, which is widely used in the field of variable-rate fertilization. Zeng et al [17] verified by performing a control experiment that the driving layer was the key factor that affected the accuracy of fertilization. The control mechanism for opening the fertilizer discharging wheel was realized mainly in two ways: axial movement, and baffle opening and closing [18] .…”

Section: Introduction mentioning

confidence: 99%

Design and experiment of vertical pneumatic fertilization system with spiral Geneva mechanism

Chen

Zheng

Shaojie

et al. 2021

International Journal of Agricultural and Biological Engineering

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In the traditional fertilization method, a large amount of fertilizer is applied, which causes congestion easily. It is not conducive to the sustainable development of agriculture. In this work, a vertical pneumatic fertilization system with a spiral Geneva mechanism was designed according to the operational requirements of variable-rate and smooth fertilization. The uniformity in discharging fertilizer with different spiral angles was simulated and analyzed by extended discrete element method (EDEM) based simulation software, from where the spiral angle of the fertilizer discharge wheel was determined to be 45°. The fertilization system includes a fertilizer apparatus with a spiral Geneva mechanism, whose optimal performance parameters were obtained from the bench experiment. The accuracy and uniformity of the fertilizer application system were taken as the evaluation indicators. The linear relationships of the discharged amount of fertilizer with the rotational speed and the opening of the fertilizer discharging wheel were verified by both static blowing fertilization and field experiments. The static blowing experimental results show that the discharged amount of fertilizer has a high linear correlation and accuracy with both the opening and rotational speed, and the highest correlation occurs with the rotational speed. The rotational speed and opening have significant effects on the discharged amount of fertilizer and the average coefficient of variation. The effect of the rotational speed was the most significant. According to the model obtained by multiple regression fittings, the optimal parameters were determined when the average coefficient of variation was small, the rotational speed was 15.9 r/min and the opening was 34.4 mm. Therefore, the purpose of precise fertilization can be achieved by adjusting the opening or rotational speed in a way to get the exact amount of fertilizer discharged as required by the corresponding crops. The field experiment showed that the variation coefficient of each fertilizer discharged decreases first and then increases with an increasing opening under different rotational speeds, which is consistent with the theoretical value. When the opening was 40 mm or 50 mm, the variation coefficient reached the minimum value, which is far less than the qualified index of 7.8%. In the static blowing experiment and the dynamic field experiment, the stability of the fertilizer discharging device can be significantly enhanced with the utilization of the pneumatic conveying fertilizer. This study can provide a theoretical reference for parameter selection and optimization of vertical spiral fertilization systems.

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“…Given the options offered in the markets, the available models of metering mechanisms present different types of architecture, standing out single and double helical mechanisms, which have a continuous thread system, and corrugated rollers, consisting of flutes (Ning et al, 2015;Zeng et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Fertilizer deposition as a function of angular velocity and inclination of the helical dosing mechanism

Zimmermann

Jasper

Savi

et al. 2022

Rev. bras. eng. agríc. ambient.

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The establishment of grain crops in Brazil is an important industrial process in the agricultural chain, requiring the correct deposition of granular fertilizer over the sowing furrow and more efficient, precise, and sustainable assessments in the operation, which can be achieved with the statistical process control. This study aimed to assess the effect of the angular velocity on different inclinations of the helical metering mechanism on the granular fertilizer deposition. An automated electronic bench was used to assess the deposition quality of granular fertilizers considering different angular velocities (1.11, 1.94, and 2.77 m s-1) and longitudinal and transverse inclinations (+15, +7.5, 0, −7.5, and −15°), with the helical doser by overflow. Flow data were collected and submitted to descriptive statistics and statistical process control. The metering mechanism showed expected variations, with acceptable performance under process control. The values of the flow rates of the granular fertilizer increased as velocity increased, standing out longitudinal inclinations of +7.5 and +15°, providing higher fertilizer depositions.

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Structural design and parameter determination for fluted-roller fertilizer applicator

Cited by 16 publications

References 15 publications

Test and Comprehensive Evaluation for the Performance of UAV-Based Fertilizer Spreaders

Test and Comprehensive Evaluation for the Performance of UAV-Based Fertilizer Spreaders

Design and experiment of vertical pneumatic fertilization system with spiral Geneva mechanism

Fertilizer deposition as a function of angular velocity and inclination of the helical dosing mechanism

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