Research on structure of atomized dust reduction nozzle in coal mine transportation roadway
Spray dust reduction is the main technical means of dust removal for underground transportation in coal mines,and the nozzle structure optimization can effectively improve the atomization effect of the nozzle.CFD software was used to establish the atomization nozzle model,and the influence of different factor changes on the atomization effect was analyzed.The results showed that compared with the straight-through nozzle and the gradually expanding nozzle,the tapered nozzle had a longer outward spraying distance and covered a wider range,so the tapered nozzle was preferred.Compared with the flow field formed by the single nozzle,the overall spraying distance and coverage area by the double nozzle were smaller,with poorer atomization performance and dust reduction effect,so the single nozzle form was preferred.With the increase of the nozzle outer opening diameter,the nozzle spraying distance and influence range first became larger and then smaller.When the nozzle outer opening diameter was 5 mm,the atomization performance and dust reduction effect was the strongest.With the increase of the nozzle length,the nozzle spray coverage area first expanded and then narrowed.When the nozzle length was 4 mm,the nozzle spray area was the widest,and the atomization performance was strongest.
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万方数据
维普
