Simulation of the Pneumatic System of a Seed Drill with a Vertical Flow Direction


The purpose of the work is to reveal the influence of conical directing agents on the speed and trajectory of particles movement in the vertical pneumatic conduit of the sowing machine and to establish their rational parameters. With the help of numerical modeling the particle flight trajectories in the air flow were obtained. The carried out researches have shown expediency of application of the conical directing agent, allowing to take away a longitudinal stream of particles from walls of a pneumatic conduit and to centre their trajectories of movement along an axis of a pneumatic conduit. Particles are focused to the center of the distributor when the distributor covers the area of pneumatic conduit cross-section close to 25%.

[1] Petrov, A., Kryuchin, N. (2014). Design of universal pneumatic drill for grain, small seeds and difficultly sowing crops (In Russ.). Bulletin Samara State Agricultural Academy, vol. 3, pp. 3–7.

[2] Laryushin, N., Machnev, A. (2015). Results of laboratory studies of a coulter with a spring-loaded dispenser and copying device for the furrow bottom (In Russ.). Scientific Review, vol. 17, pp. 33–39.

[3] Machnev, A., Machnev, V., Horev, P. et al. (2014). Results of laboratory tests of the sowing device with the asymmetrical profile of fillets of the reel (In Russ.). Niva Povolzhya, vol. 2, pp. 76–78.

[4] Machneva, O., Kablukov, V., Kukharev, O. et al. (2018). Research of the interaction of seeds with distributing and reflecting devices(In Russ.). Herald of Ryazan State Agrotechnological University Named after P.A. Kostychev, vol. 4, pp. 111–117.

[5] Yatskul, A., Lemiere, J.P., Cointault, F. (2017). Influence of the divider head functioning conditions and geometry on the seed’s distribution accuracy of the air-seeder. Biosystems Engineering, vol. 161, pp. 120–134. DOI: 10.1016/j.biosystemseng.2017.06.015

[6] Kumar, V., Durairaj, C. (2000). Influence of Head Geometry on the Distributive Performance of Air-assisted Seed Drills. Journal of Agricultural Engineering Research, vol. 75, pp. 81–95. DOI: 10.1006/jaer.1999.0490

[7] Lei, X., Liao, Y., Zhang, Q., et al. (2018). Numerical simulation of seed motion characteristics of distribution head for rapeseed and wheat. Computers and electronics in agriculture, vol. 150, pp. 98–109. DOI: 10.1016/j.compag.2018.04.009

[8] Lei, X., Liao, Y., Wang, L. et al. (2017). Simulation of gas-solid two-phase flow and parameter optimization of pressurized tube of air-assisted centralized metering device for rapeseed and wheat. Transactions of the Chinese Society of Agricultural Engineering, vol. 19, pp. 67–75. DOI: 10.11975/j.issn.1002- 6819.2017.19.009

[9] Pyataev, M. (2011). Increasing the uniformity of seed distribution by vertical distributors of pneumatic seed drills (In Russ.). PhD dissertation, Chelyabinsk State Agroengineering Academy.

[10] Rakhimov, Z., Khlyzov, N., Rakhimov, I. et al. (2015). Parameters substantiation of pneumatic system for conveying seeds and fertilizes in tillage sowing unit (In Russ.). Agro-industrial complex of Russia, vol. 1, pp. 91–104.

[11] Kryuchin, N. (2008). Improving the efficiency of distribution and transport systems of pneumatic seeding machines) (In Russ.) Samara State Agricultural University, Editorial publishing center, Retrieved from:

[12] Saitov, V., Kurbanov, R., Suvorov, A. (2016). Assessing the adequacy of mathematical models of light impurity fractionation in sedimentary chambers of grain cleaning machines. Procedia Engineering, vol. 150, pp. 107–110. DOI: 10.1016/j.proeng.2016.06.728

[13] Chatkin, M., Ovchinnikov, V. (2007). Results of researches of beet drill sst-12 on the crop of Lucerne (In Russ.) Agrarian Scientific Journal, vol. 3, pp. 68–69, Retrieved from: 9513629

[14] Mudarisov, S., Khasanov, E., Rakhimov, Z., Gabitov, I., Badretdinov, I., Farchutdinov, I., Gallyamov, F., Davletshin, M., Aipov, R., Jarullin, R., (2017). Specifying Two-Phase Flow in Modeling Pneumatic Systems Performance of Farm Machines. Journal of Mechanical Engineering Research and Developments, vol. 4, pp. 706–715. DOI: 10.7508/jmerd.2017.04.018