矿山机械重选设备重介质分流程动态原理图
重介质分选机是根据阿基米得原理,将被分选原煤在一定密度的悬浮液中按密度差异进行分层和分离的设备。其工艺过程:
经预先筛分后的原煤(一般大于13mm或6mm)进入充满重介悬浮液槽体中进行分选。悬浮液的密度自动调节。密度小于悬浮液的物料浮至液面,在水平流的作用下,随排料口的溢流排出,从而得到两种不同密度的产品。所不同的是,刮板分选机利用上升流,而立轴和轮轴分选机则是利用下降流来维持悬浮液的稳定。
The raw coal(usually greater than 13 mm or 6 mm) after pre-screening enters the filled heavy dielectric suspension body for sorting. The density of suspension is adjusted automatically. The material with a density less than that of suspension floats to the liquid surface, and under the action of horizontal flow, it is discharged with the overflow of the discharge outlet to obtain two products with different densities. The difference is that the scraper separator uses upwelling, while the vertical and axle separators use descending currents to maintain the stability of the suspension.
重介质分选机操作与日常保养维护
(1) 严格执行设备的操作规程,开车前检查分选槽底,提升轮或刮板是否有异物卡压:开车过程中注意提升轮是否有偏摆及卡阻现象检查各部位润滑及温升。
(2)开车前先接通介质泵,使分选槽内充满合格介质,刮板分选机工作介质液面应高于溢溜口100-120mm左右。
随时检查分选槽液位及密度,介质添加执行机构和分流装置,调整分选密度,达到要求值
(3)检查齿棒卡板固定情况,如有松动,停车处理。
(4)润滑
提升轮轴,用3号钙基润滑脂,每半年至1年更换一次。
减速器,用40号机油,3-6个月更换一次。
排媒轮轴,用3号钙基润滑脂,每半年至一年更换一次。
外传东伞齿轮,用3号钙基润滑脂,每周清理更换一次。
(5)其他注意事项等等。。。。。。
常见故障处理:
(1)刮板链及衬板磨损。处理办法:更换。
(2)刮板链错牙走斜
办法处理:松开尾部螺旋拉紧装置,调整后,再拉。并保证要两侧刮板链张紧度一致。
Common fault handling:
(1) scraper chain and lining wear. Solution: replace.
(2) the wrong teeth of the scraper chain are inclined
Method: loosen the tail screw tension device, adjust, then pull. And ensure that both sides of the chain scraper tension is consistent.