Design and Experiment on Precision Seed Metering Device for Narrow-Row and Dense Planting of Soybean

LI, Qichao; Feng, Jianyong; Jiang, Wei

doi:10.35633/nmateh-67-36

Cited by 14 publications

(8 citation statements)

References 19 publications

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“…A pneumatic metering device was developed with the double-row metering tray, and an orthogonal experiment was optimized to obtain the optimal parameter combination The optimal combination of parameters was as given below: a sucking hole diameter of 4.5 mm, a vacuum pressure of 4.5 kPa, and a forward speed of 10 km/h. Under the condition, the missed rate was not more than 1%, the multiple seeding index was not more than 3%, and the qualified rate was more than 97%, which met the design requirements [11]. Xue et al [12] developed and modeled a precision soybean metering device to plant at high-speed working conditions.…”

Section: Introductionmentioning

confidence: 85%

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Performance Parameters Optimization of a Three-Row Pneumatic Precision Metering Device for Brassica chinensis

Sun

et al. 2022

Agronomy

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To improve the problem of low seeding efficiency facing the single-row planting mode traditionally used in China, this study aimed to design a novel three-row pneumatic precision metering device. The working principle and main structure were introduced in the paper. The three main factors affecting the seeding performance comprised of vacuum pressure, angular velocity of the metering tray, and taper angle of the sucking hole. A Box-Behnken experiment design having the qualified index and missed seeding index as the experimental index was used, and the results indicated that optimal performance of the metering device was achieved when the vacuum pressure was 2.16 kPa, the angular velocity of the metering tray was 29.43 rpm, and the taper angle of the sucking hole was 61.51°. The qualified index of the inner, middle, and outer ring was 95.12%, 94.68% and 94.24% respectively, while the missed seeding index of the inner, middle, and outer ring was 3.67%, 3.12% and 2.58% respectively under the optimal combination of parameters. The bench test results were basically consistent with the optimized results. This paper can provide support for the design of a three-row pneumatic precision metering device for Brassica chinensis.

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Section: Introductionmentioning

confidence: 85%

“…The R 2 value was 0.9941. The response regression model of the middle ring qualified index obtained after removing insignificant factors was shown in Equation (11). It can be seen that the major and minor factors influencing the middle ring qualified index were X > X 1 > X 3 .…”

Section: Variance Analysis and Model Establishmentmentioning

confidence: 99%

Performance Parameters Optimization of a Three-Row Pneumatic Precision Metering Device for Brassica chinensis

Sun

et al. 2022

Agronomy

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“…The seed metering unit is the core component of seeding equipment, and its performance has a crucial impact on the efficiency of seeding [1][2][3]. Mechanical seed metering units are widely used worldwide due to advantages such as their simple structure, low cost, and good versatility [4][5][6][7]. Seed cleaning refers to the removal of excess seeds from the seed cell to ensure single-seed cells for single-grain seeding and the improved accuracy of seeding.…”

Section: Introductionmentioning

confidence: 99%

Research on the Flexible Gradual Seed-Cleaning Method of the Brush-Type Single-Seed Soybean Planter

Li,

Zhao,

Yang

et al. 2024

Agriculture

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In response to the poor cleaning effect of the brush-type soybean seeder, a lightweight mechanism of the brush-type soybean seeder was optimized and designed. We proposed a progressive seed-cleaning method. Firstly, mechanical analysis was conducted on the soybean seeding process to prevent excessive clearing of individual soybean seeds initially filled into the orifices by the seeding brush. A formula for expressing the force exerted by the seeding brush on stabilizing individual soybean seeds in the orifice was derived. Secondly, an analysis of the progressive seeding principle was performed, and theoretical calculations were carried out for the progressive seeding curves within the x-y plane and along the direction of the z-axis. The progressive seeding curves were determined. Factors affecting the seeding efficiency were analyzed, including the plate’s speed, the initial angle of the seeding brush, and the initial distance between the seeding brush and the seeding plate. Based on the Box–Behnken central composite design theory, using the seeding tray’s rotational speed, the initial angle of the seeding brush, and the initial distance between the seeding brush and the seeding tray as experimental factors, orthogonal experiments were conducted with the leakage rate and the over-cleaning rate as the indicators for the evaluation, and the working parameters were optimized. Validation experiments showed that with a plate speed of 29 rpm, an initial angle of the seeding brush of 54°, and an initial distance between the seeding brush and the seeding plate of 11 mm, the results were as follows: a skip-seeding rate of 1.23% and an over-seeding rate of 0.66%, indicating a significant improvement in seeding performance. A comparative experiment was conducted with non-progressive cleaning brushes, and the test results showed that the progressive cleaning brush reduced the leakage rate by more than 1% and the over-cleaning rate by more than 0.5%.

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“…To reduce the static electricity of the seed box, the Exact Emerge series of air-suction seed metering devices from John Deere will be rower seed rower disc using plastic material processing to increase the contact area of the seed and suction hole, the company will be the traditional disc-shaped rower disc structure improved to bowl-shaped, increase the seed filling force to adapt to high-speed rower requirements [9,10]. Amazone, a German company, has developed an ED series air-suction precision seed metering device that uses an advanced design concept to meet the sowing needs of a variety of crops by changing the seeding disc and adjusting the operating parameters; it can maintain high-quality sowing operations in complex operating environments while achieving no-till precision sowing [11].…”

Section: Introductionmentioning

confidence: 99%

Experiment and optimization of axial air-suction roller seed metering device

Zhang

Yang

Zhang

et al. 2023

Preprint

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The seed metering device construction is adjusted to improve the negative pressure at the seed metering device type hole and hence the seed suction efficiency. To explore the link between the structural parameters of the seed metering device and the negative pressure of the type hole, the Response Surface Methodology (RSM) is integrated with Computational Fluid Dynamics (CFD). Grid independence was tested to assure the solution's dependability. The internal flow field of the seed metering device was investigated, and the negative pressure at the type hole's input was 56.71 Pa. The Central Composite Design (CCD) in the response surface method was employed to generate a more perfect negative pressure at the suction of the type hole. The diameter of the air chamber channel, the draft angle of the type hole, and the number of fan blades were employed as design factors, and the major target function was the negative pressure at the entrance of the type hole. According to regression research, the optimal point occurs when the air chamber channel diameter is 59.26mm, the draft angle of the type hole is 14.28°, and the number of fan blades is 9. The objective function predicts a negative pressure of 69.41 Pa at the type hole's inlet. The Central Composite Design (CCD) in the response surface method was employed to generate a more perfect negative pressure at the suction of the type hole. The diameter of the air chamber channel, the draft angle of the type hole, and the number of fan blades were employed as design factors, and the major target function was the negative pressure at the entrance of the type hole. According to regression research, the optimal point occurs when the air chamber channel diameter is 59.26mm, the draft angle of the type hole is 14.28°, and the number of fan blades is 9. The objective function predicts a negative pressure of 69.41 Pa at the type hole's inlet.

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Design and Experiment on Precision Seed Metering Device for Narrow-Row and Dense Planting of Soybean

Cited by 14 publications

References 19 publications

Performance Parameters Optimization of a Three-Row Pneumatic Precision Metering Device for Brassica chinensis

Performance Parameters Optimization of a Three-Row Pneumatic Precision Metering Device for Brassica chinensis

Research on the Flexible Gradual Seed-Cleaning Method of the Brush-Type Single-Seed Soybean Planter

Experiment and optimization of axial air-suction roller seed metering device

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