Computers and Electronics in Agriculture, Год журнала: 2024, Номер 227, С. 109620 - 109620
Опубликована: Ноя. 12, 2024
Язык: Английский
Journal of Cleaner Production, Год журнала: 2024, Номер 443, С. 140928 - 140928
Опубликована: Янв. 30, 2024
Язык: Английский
Процитировано
13
Computers and Electronics in Agriculture, Год журнала: 2024, Номер 222, С. 108976 - 108976
Опубликована: Май 21, 2024
Язык: Английский
Процитировано
6
INMATEH Agricultural Engineering, Год журнала: 2024, Номер unknown, С. 473 - 486
Опубликована: Авг. 23, 2024
In order to improve the sowing performance of air-pressure maize dense planting high-speed precision seed-metering device and reduce occurrence multiple missed seeds phenomenon, a seed-cleaning mechanism with progressive seed scraper was designed. The structure working principle are described, mechanical model before after excess enters cleaning area is established, design parameters key components determined through method theoretical analysis. experiments single-factor multi-factor conducted clearing angle, operating speed, positive pressure value blower as influencing factors, qualified index, miss index experimental indexes. results show that optimal seed-clearing parameter combination angle 0.024°, speed 10 km/h, 6.0 kPa, verification test 98.11%, 1.44%, 0.45%. comparative experiment, increased by about 2.3% compared without mechanism, decreased 2.2%. reasonably designed meet operation requirements device.
Язык: Английский
Процитировано
3
Computers and Electronics in Agriculture, Год журнала: 2025, Номер 230, С. 109848 - 109848
Опубликована: Янв. 6, 2025
Язык: Английский
Процитировано
0
Frontiers in Plant Science, Год журнала: 2025, Номер 16
Опубликована: Янв. 27, 2025
Introduction This study introduces a new technical method that involves adjusting the seed-filling posture and fluidizing seed group to improve capacity of mechanical seed-metering devices for high-speed maize planting. The design novel posture-adjusting device is presented its operating principle described. In area, seeds maintain same postural characteristics are detached from group. creates favorable conditions achieve effective under planting conditions. Methods Firstly, key parameters core component were analyzed. Secondly, influences efficiency flow distribution on effect clarified by EDEM simulation. Finally, metering performance was optimized validated using bench testing. Results experiment demonstrated type A groove had highest efficiency, more uniform distribution, superior as compared other types. best achieved with an opening angle 21.6° width 8.4 mm; this resulted in pass, repeat, leak rates 94.8%, 1.3%, 3.9%, respectively. Within speed range 8–14 km/h, pass rate over 94%, repeat below 2.1%, 3.9%. Discussion designed better than without mechanism, thus proving effectiveness method. These findings provide reference improving devices.
Язык: Английский
Процитировано
0
Computers and Electronics in Agriculture, Год журнала: 2025, Номер 237, С. 110586 - 110586
Опубликована: Май 21, 2025
Язык: Английский
Процитировано
0
Computers and Electronics in Agriculture, Год журнала: 2025, Номер 237, С. 110584 - 110584
Опубликована: Май 24, 2025
Язык: Английский
Процитировано
0
Agronomy, Год журнала: 2024, Номер 14(4), С. 768 - 768
Опубликована: Апрель 8, 2024
The double-hole rice vacuum seed meter is critical equipment for the planting precision of direct seeding. effects shaped holes and disturbance on bunch were investigated to improve with meter. A test bench was set up analyze trends in quality feed index, miss multiple index meters different at speeds pressures. Based optimal hole structure, structures designed investigate influence structure planting. linear regression model established relationship between pressure, rotational speed, Discrete element numerical simulation experiments carried out effect seeds. significantly higher than that without while B optimum structure. Disturbance affects rate, index. II better other structures. At a speed 60 rpm pressures 2.0 kPa, 2.4 2.8 qualities 90%, 91.11%, 89.17%, respectively, indexes 2.96%, 1.94%, 1.57%, respectively. high speeds, In test, velocity total force magnitude less those disturbed Simulation showed breaks stacked state Research has shown holds stable suction posture, which helps increase seed-filling rate. Seed improves mobility, thereby enhancing
Язык: Английский
Процитировано
2
Biosystems Engineering, Год журнала: 2024, Номер 245, С. 84 - 95
Опубликована: Июль 13, 2024
Язык: Английский
Процитировано
2
Agriculture, Год журнала: 2024, Номер 14(8), С. 1391 - 1391
Опубликована: Авг. 17, 2024
Quinoa and other small-seeded crops possess relatively diminutive seed diameters, rendering them highly susceptible to the influence of airflow. The seeding process is impacted by Cluster Hole Effect, where seeds are unintentionally drawn into areas between suction holes. This leads multiple being picked up at once, making it difficult meet precise requirements for quinoa. To delve deeper mechanism cluster hole effects, this study focused on quinoa as primary research subject. analyzes migration conditions population establishes an equation considering effect. CFD methods were employed analyze impact various vacuum chamber negative pressures, spacing, quantities flow field. By combining simulation results with evaluation criteria such qualification rate per hole, empty rate, spacing coefficient variation, single-factor experiments Box–Behnken response surface conducted effects different factors their interactions, ultimately determining optimal parameter combination. indicate that five holes, spaced D11, a pressure 1.2 kPa, rotation speed 15 rpm, performance optimal. reaches 98.67%, 96%, variation 5.24%, meeting agricultural requirements.
Язык: Английский
Процитировано
2