Needle Electrode Electrostatic Atomization Mechanism and Experimental Research
In order to improve the technical problems of micro-droplet drift and low utilization rate of cutting fluid in minimum quantity lubrication machining,the influence law of high voltage elec-tric field of needle electrode on the change of micro-droplet particle size and particle size distribution is explored.The model of cone jet atomization is established by combining the characteristics of lubricant charge and electric field distribution of needle electrode,and the model is solved by numerical analysis software,and electrostatic atomization effect observation experiment is designed to verify the mecha-nism of cone jet atomization of needle electrode.The results show that the droplet size decreases with the increase of air pressure and voltage,and the particle size refinement is most obvious at 0.1 MPa,with an overall decrease of 34.67％,and the distribution span R.S value decreases by 20％,which is ba-sically consistent with the calculated value of the atomization model.Under three different pressure con-ditions,the percentage concentrations of PM10 and PM2.5 also decrease to varying degrees as the volt-age increases.Therefore,the high-voltage electric field has a significant refining effect on the particle size of fog droplets,and can also significantly suppress the production of PM10 and PM2.5 fine particles.
万方数据
维普
