掘进机外喷雾降尘效率的研究与分析  

The Efficiency of the Research and Analysis for Roadheader External Spray

作　　者：张保动[1] 邓云[1] 陈江辉[1] 张惠波[1] 

机构地区：[1]辽宁工程技术大学机械工程学院,阜新123000

出　　处：《微计算机信息》2011年第6期113-115,共3页Control & Automation

摘　　要：为了提高掘进工作面的降尘效率,通过对喷雾降尘机理的研究,分析了影响降尘效率的因素,建立了纵轴式掘进机外喷雾降尘效率的数学模型,应用MATLAB软件绘制出降尘效率曲线。由此得出,雾化角度越小降尘效率越高,考虑到喷雾的均匀性和喷雾系统的稳定性,雾化角度50°左右为宜;随着喷雾压力的增大,降尘效率显著提高,当供水压力为10Mpa时,降尘效率能达到90%以上;喷嘴到尘源的距离越小,降尘效率越高,但是如果距离太近,喷雾作用范围小,降尘不充分,到尘源的距离为1.3~1.4m比较理想;喷嘴直径越大,降尘效率越高,在耗水量允许情况下,喷嘴直径由0.8mm增大到1.5mm,降尘效率由63%提高到89%。该项研究对于合理设计掘进机外喷雾参数,提高喷雾降尘性能,改善掘进工作面环境等具有一定的指导作用和参考价值。该项研究对于合理设计掘进机外喷雾参数,提高喷雾降尘性能,改善掘进工作面环境等具有一定的指导作用和参考价值。In order to improve the spraying efficiency of leading face,affecting factors of reducing dust efficiency are analyzed by studying the mechanism of reducing dust with spray in the paper,and mathematical models of reducing dust efficiency by external spray are established for longitudinal roadheader,and drew efficiency curves of reducing dust by MATLAB.From which it was obtained that the smaller Spray angle the higher efficiency of reducing dust.Considering the uniformity of spray and spray systems,the stability of about 50° Angle of atomization advisable.With the increasing pressure of spray,dust efficiency improved significantly,when supply pressure as 10Mpa,the efficiency can reach 90%.Nozzle to dust source distance is smaller,the efficiency is higher,but if the distance is too close,spray range,small dust,to dust source of 1.3 ~ 1.4 m distance.Nozzle diameter,the efficiency is higher,the permission in water by 0.8 mm in diameter,nozzle increases to 1.5 mm,improve the efficiency of 63% to 89%.The study has some guidance and reference value for designing reasonably spray parameters of roadheader,improving the performance of reducing dust,making better the environment of leading face.

关 键 词：纵轴式掘进机 外喷雾 降尘效率 

分 类 号：TD714[矿业工程—矿井通风与安全]