喷嘴喷雾压力与雾化粒度关系的实验研究

对喷嘴雾化粒度的指标和雾化粒度的测定方法进行了分析，利用Winner313激光粒度分析仪设计了喷嘴雾化实验系统，对煤矿采煤工作面常用的5种喷嘴进行了5个压力下的雾化粒度测定，得到了各类喷嘴在不同压力下的D50、D90、D[3,2]等数据，根据数据分析得出：要对呼吸性粉尘有较好的捕集作用，就必须实现高压喷雾；8 MPa作为支架和煤机喷雾压力时的雾化粒度对采煤工作面降尘效果最佳。通过在综放工作面的实际应用，降尘率平均在90%以上。

Experimental research on the relationship between nozzle spray pressure and atomization particle size

Analyzed the index of atomization particle size of spraying nozzle and the test method of aerosol particle size.Utilizing Winner313 Laser Particle Size,designed the experimental system,and then tested the atomization particle size of five kinds conventional spraying nozzles in coal mine,under 2，4，6，8，10 MPa.Got data of D50,D90,D[3,2] of various types of nozzles under different pressures,and based on these data,it is found that we should realize high pressure spray for better capture of respirable dust.Atomization particle size under 8 MPa between support and coal cutter can realize the best performance of dust falling.Through on site applications,the efficiency of the dust falling is achieved over 90%.