采煤机负压二次降尘系统的改造设计与应用研究

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中图分类号：TD532 文献标志码：A 文章编号：2095-2945（2025）25-0120-04

Abstract：Thisstudyadresesfrequentfailuresofthespraypump，instabilityofthewaterreplenishmentsystem，andnozzle clogginginthenegativepresuresecondarydustsuppressionsystemofthe MG650/1630-WDcoalmining machineatth113 upperO5workingfaceofacoal mineinShandong.Basedonnegativepresure fieldtheoryandhigh-pressurewater mist sprayingtechnology，optimizationmeasureswereproposed，includingreplacingthespraypump，optimizing thewatersupply system，upgradingthewaterreplenishmentcontrolsystem，andredesigningthenozzes.Theinnovativeintegationofintellgnt waterreplenishmentcontrolandspraysystemlinkageimprovedsystemresponseandreliability.Theresultsshowedthatthetotal dust concentration at the working face decreased from 210mg/m3 to 90.2mg/m3 ，and respirable dust concentration reduced to （204 43.2mg/m3 ，with a dust removal efficiency improvement of 10.65% .The optimized system operated stably，with maintenance costs reducedbyapproximately150ooRMB，andtheworkingenvironmentandgreenproductionlevelssignificantlyimproved.

Keywords：coal mining machine;negativepresuresecondarydustreductionsystem;dust control;；system transformation; green production

煤尘治理是煤矿安全生产的重要环节，其治理效果直接影响矿井作业环境及工人健康[1-2]。（剩余4992字）