Research On Electrostatic Atomization Device Of A New Seed Coating Machine

The problem of seed coating machine’s insufficient cover in the shape of concave and convex navel of seed is widespread,and it seriously affects the germination rate of seeds.In order to solve this problem,this paper puts forward the electrostatic atomization technology applied to the seed coating machine and design a seed coating machine with the function of electrostatic atomization.Then,we make related test and statistical research of the atomization performance of the electrostatic atomization device,as well as to carry simulation of the charged droplets produced by the space electric field,to study the performance space and makes the best atomizing effect and solve the problem of shortage of seed-coating.In this paper,on the basis of the existing seed coating machine structure,we added an electrostatic atomization device which can make the second parcel for seeds which can not package and formed a kind of electrostatic atomization technology and electrostatic adsorption principle of new type of seed coating machine by studying the working principle of the machine at home and abroad.The new type of seed coating machine made the first and second seed coating treatment in atomizing chamber and stirring cage.New electrostatic atomization device can take liquid to spray charged droplet and make the seeds not package the second parcel and all-round coverage,and solved the problem of insufficient covers in seed navel area such as coating machine.Through testing electrostatic atomization and droplet parameters,this paper concluded that effect of seed dressing atomizing is best when the spray pressure is 0.4 mpa and charging voltage is 25 k V and droplets arithmetic average particle is 65.8μm,the charge-to-mass ratio of the droplet was 0.97μC/g,which means the charge electricity of atomization droplet is large and has the strong electrostatic adsorption capacity.The electrostatic spray droplets can be attached to the opposite side of the sampling paper by electrostatic atomization experiment,and the characteristics of the electrostatic droplet can be attached to the target crop in an all-round way.We simulated space electric field between different quantity of charged droplets and slab the grounding conductor,and collect the electric field intensity data under different conditions,and analysis distribution of space electric field generated by the charged droplets by using the Ansoft Maxwell that low-frequency finite element software.Last,we simulated the space electric field between group of droplets and spherical conductor which closer to the shape of seeds.From the simulation results,it is concluded that the droplets produced by the electric field can completely surround the spherical conductor,which is beneficial for seed dressing to cover seeds fully especially the navel whose shape is concave and convex,and improve the quality of seed coating,so it is concluded that the electrostatic atomization technology applied to the seed coating is feasible and effective.