Abstract: In order to learn about the atomization performance of the pneumatic vortex spray curtain device, a similar experimental platform was set up according to the formation mechanism. Multi-factor orthogonal tests were designed considering main influencing factors and the atomization performance prediction model was obtained by multi-factor regression analysis. Experiments were carried out to verify the dust removal effect of the device. The results show that the jet wind speed is positively correlated with the atomization radius and it has great influence on the radius, that the spray working angle and the atomization pressure are negatively correlated, and that the squence of factors affecting atomization radius from big to small is the jet wind speed, the spray working angle and the atomization pressure. The dust removal effect experimental results prove that the pneumatic vortex spray curtain can isolate the high concentration dust, that the removing efficiencies of dust and respirable dust are 93.03% and 87.75% respectively, and that the effect on dust collection is more significant.

Key words: pneumatic vortex spray curtain, parameter optimization, atomization radius, jet wind speed, working angle, dedusting effect