沉降过滤式离心脱水机在望峰岗选煤厂的应用

论述了望峰岗选煤厂煤泥水处理工艺流程。阐述了LWZ1400×2000型沉降过滤式离心脱水机的工作原理,说明其具有提高中煤产率和降低系统煤泥含量的作用。针对LWZ1400×2000型沉降过滤式离心脱水机存在的入料、放料事故率高,控制系统结构、离心机预警部分程序控制简单等问题,通过更换三通蝶阀为气动插板阀,增加集中控制系统,增加闭锁关系和报警区域等措施对其进行了改造。最后从阀体执行情况,集中控制系统,甩油、回油情况,差速器,磨损件等方面总结了LWZ1400×2000型沉降过滤式离心脱水机在维护保养方面的注意事项,更好地保障了设备运转,对选煤生产的稳定起到了积极作用。

Application of screenbowl centrifuge in Wangfenggang coal preparation plant

Discuss slime water treatment technological process in Wangfenggang coal preparation plant. The analysis of working principle of LWZ1400-2000 screenbowl centrifuge show that,it could improve middings yield,decrease slime content. It also has lots of problems need to resolve, such as high feeding and emptying accident rate, ineffective control program which are designed for control system and centrifuge early warning. To resolve these issues,replace the triple eccentric butterfly valve with penumatic slide plate valve, add centralized control system, blocking switches and early warning areas. List the matters needing attention in maintenance from the aspects of slaves reaction, centralized control system, oil leakage and return, differential, wear parts. All these methods guarantee the normal operation of equipments,improve process stability of coal preparation plant.