Abstract—

Designs of pneumatic seeding devices operating on air-flow overpressure have been developed. Constructive changes in the dosing system of the pneumatic device have been made. Sowing disks are rigidly fixed to each other for sowing seeds of two crops simultaneously with the possibility of displacing the disks relative to each other circumferentially and of their dismantling, and the air nozzle is divided into two pairs of nozzles with the same cross-sections. One pair ensures removal of excess seeds from the cells, keeping only one, and another pair is responsible for ejection of stuck seeds from the cells without compromising their integrity and in compliance with established sowing schemes. The first design is intended for sowing seeds of two row crops in a compacted way, the second is meant for sowing seeds with different physical, mechanical, and aerodynamic properties by dotted and nested methods. Changes in the dosing system, due to the use of bushings with holes on the thread located at the bottom of the conical cells, made it possible to switch from single-grain to nested seeding without changing the seeding disks. To do this, it is enough to change the bushings of cells with two or three holes. The use of the developed designs of pneumatic seeding devices improves operational reliability and increases the yield of the sown crop up to 15%.

中文翻译：

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气动播种装置设计变更对播种质量指标的影响

摘要-

已经开发了在气流超压下运行的气动播种设备的设计。气动设备的计量系统已进行了建设性的更改。播种盘彼此牢固地固定，以同时播种两种农作物的种子，并且有可能使播种盘沿周向相对于彼此移位以及其可拆卸性，并且空气喷嘴被分成两对具有相同横截面的喷嘴。一对确保从细胞中去除多余的种子，仅保留一个，而另一对则负责从细胞中排出粘附的种子，而不会损害其完整性并符合既定的播种方案。第一种设计旨在以紧凑的方式播种两行作物的种子，第二种设计旨在播种具有不同物理，机械，以及通过点缀和嵌套方法获得的空气动力学特性。由于使用了位于圆锥形孔底部的螺纹孔的衬套，加料系统发生了变化，从而无需更换播种盘即可从单粒播种切换到嵌套播种。为此，只需更换带有两个或三个孔的电池衬套即可。使用开发的气动播种设备设计可提高操作可靠性，并使播种作物的产量提高多达15％。只需更换带有两个或三个孔的电池衬套就足够了。使用开发的气动播种设备设计可提高操作可靠性，并使播种作物的产量提高多达15％。只需更换带有两个或三个孔的电池衬套就足够了。使用开发的气动播种设备设计可提高操作可靠性，并使播种作物的产量提高多达15％。