连采机截割尘源高压雾化封闭控降尘系统研究与应用  

Research and Application of High-pressure Atomization Closed Dust Control and Reducing System for Cutting Dust Source of Continuous Mining Machine

作　　者：唐明云[1,2] 王乐乐 周亮[1,2] 林汉毅[1,2] 王宏梁 金靖艳 TANG Mingyun;WANG Lele;ZHOU Liang;LIN Hanyi;WANG Hongliang;JIN Jingyan(School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China;Key Laboratory of Industrial Dust Prevention and Control&Occupational Health and Safety,Huainan 232001,China;Shenmu Hongliulin Mining Co.,Ltd.,Shanxi Coal Industry Chemical Group,Shenmu 719300,China)

机构地区：[1]安徽理工大学安全科学与工程学院,安徽淮南232001 [2]工业粉尘防控与职业安全健康教育部重点实验室,安徽淮南232001 [3]陕西煤业化工集团神木红柳林矿业有限公司,陕西神木719300

出　　处：《金属矿山》2023年第7期74-81,共8页Metal Mine

基　　金：安徽省高校协同创新项目(编号:CXXT-2020-059)。

摘　　要：为有效治理连采掘进工作面截割区域的粉尘,针对连采机传统的喷雾降尘措施存在的雾化效果差、覆盖范围小等不足,对降尘用喷嘴进行参数优选试验,得到具有封控特性的等效孔径1.8 mm扇形喷嘴和具有雾化捕尘特性的等效孔径2 mm实心锥形喷嘴。基于红柳林煤矿15218连采掘进工作面现场条件和连采工艺特征,对该工作面连采机截割区域进行防尘设计,研发了连采机新型外喷雾控降尘装置,在雾化喷嘴与外喷雾控降尘装置之间加装可调节万向球头,采用“外喷雾控降尘装置+可调节万向球头+雾化喷嘴”组合模式,不仅减少了频繁拆卸喷嘴对外喷雾控降尘装置内螺纹的磨损,还便于调节雾化喷嘴喷雾方向,满足连采机降尘需要。为了提高连采机供水管路水压,通过对连采机机载各装置耗水量和连采机供水管路沿程压力损失的计算,优选使用了额定流量250 L/min、额定压力6.3 MPa的增压泵对连采机用水进行增压,综合形成了适用于红柳林煤矿连采掘进工作面的连采机截割尘源高压雾化封闭控降尘系统。现场应用表明:使用该系统后连采机截割区域全尘降尘率≥82.3%,呼尘降尘率≥72.5%,有效降低了截割区域的产尘量和溢尘量,实现了对连采机截割尘源的封闭式高效防控。In order to effectively control the dust in the cutting area of the continuous mining face,aiming at the shortcomings of the traditional spray dust reduction measures of the continuous mining machine,such as poor atomization effect and small coverage,the parameter optimization experiment of the nozzle for dust reduction was carried out,and the equivalent aperture 1.8 mm fan nozzle with sealing control characteristics and the equivalent aperture 2 mm solid cone nozzle with atomization dust capture characteristics were obtained.Based on the field conditions and continuous mining process characteristics of 15218 continuous mining face in Hongliulin Coal Mine,the dust control design of the cutting area of the continuous mining machine in the working face was carried out,and a new external spray control and dust reduction device of the continuous mining machine was developed.The adjustable ball valve was installed between the atomizing nozzle and the external spray control and dust reduction device,and the combination mode of"external spray control and dust reduction device+adjustable universal ball head+atomizing nozzle"was adopted,which not only reduced the frequent disassembly of the nozzle.The wear of the internal thread of the external spray control and dust reduction device was easy to adjust the spray direction of the atomizing nozzle to meet the dust reduction needs of the continuous mining machine.In order to improve the water pressure of the water supply pipeline of the continuous miner,through the calculation of the water consumption of each device on the continuous miner and the pressure loss along the water supply pipeline of the continuous miner,the booster pump with rated flow of 250 L/min and rated pressure of 6.3 MPa is preferably used to supercharge the water of the continuous miner,and a high-pressure atomization closed dust control system for the cutting dust source of the continuous miner suitable for the continuous mining face of Hongliulin Coal Mine is formed.The field application shows that aft

关 键 词：连采机 粉尘 掘进工作面 截割区域 喷雾降尘 

分 类 号：TD714.4[矿业工程—矿井通风与安全]