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作者通过水采矿井大量使用的煤泥泵的情况调查，针对目前煤矿煤泥水系统用泵存在的问题，开发了ＤＮＭ３００—８０型高可靠性的煤泥泵，有效地解决了煤泥泵运行中存在的需要注密封清水及耐磨性能差等问题。煤泥泵的运行效率进一步得到提高，而且整机的可靠性大大提高。文章主要介绍了该泵的水力设计和结构设计特点及现场实际运行情况
Based on the investigation of the slime pumps which are widely used in water mining wells, the author developed the DNM300-80 high reliability slime pump in view of the problems existing in the slime pump of the coal mine and effectively solved the problems that the slime pumps are in operation The need to seal water and wear poor performance problems. Slurry pump operating efficiency is further improved, and the reliability of the machine greatly improved. The paper introduces the pump’s hydraulic design and structural design features and the actual operation of the scene