https://doi.org/10.4081/jae.2025.1828

Design and experiment of air-suction precision seed discharging device for wheat

Early Access
    Published:15 May 2025
    air-suction, precision, seed dispenser, wheat
    Abstract Views: 8
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    Authors

    Hong Hu
    Modern Agricultural Equipment Research Institute, Xihua University, Chengdu, Sichuan, China.
    Jun Chen
    212022080200003@stu.xhu.edu.cn
    https://orcid.org/0009-0002-8856-729X
    School of Mechanical Engineering, Xihua University, Chengdu, Sichuan, China.
    Guanyue Zhang
    School of Mechanical Engineering, Xihua UniversityXihua University, Chengdu, Sichuan, China.
    Ziqiang Wu
    School of Mechanical Engineering, Xihua University, Chengdu, Sichuan, China.

    A pneumatic precision wheat seed metering device was designed to improve the uniformity of wheat sowing. The structure and working principle of the seed metering device were described, and the effects of the shape, diameter, depth, number, and distribution of seed-distributing holes on the negative pressure at the seed-distributing holes were analyzed, leading to the determination of the optimal working parameters. The factors directly influencing the negative pressure at the seed-distributing holes were identified through an analysis of the forces acting on the seeds in the seed filling zone. A prototype of the seed metering device was fabricated and subjected to bench tests. The designed seed metering device achieved a qualified rate of 90.7%, a replanting rate of 4.8%, and a missed sowing rate of 4.5%, meeting the agronomic requirements for wheat sowing. This study provides theoretical guidance and parametric references for the design of future pneumatic wheat seed metering devices.

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    How to Cite

    Hu, H. (2025) “Design and experiment of air-suction precision seed discharging device for wheat”, Journal of Agricultural Engineering. doi: 10.4081/jae.2025.1828.
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