Superfine grinding equipment (ultrafine mill) is mainly made up of main engine, reduction gears, analyzer, repairing platform, draught fan, powder collector, electrical cabinet, etc. The auxiliary engine is made up of jaw crusher, winnowing pan elevator, electro-vibrating feeder, material storage silo, etc.
1. Ultra-fine grinding process
The working principle is that large particle size material is crushed by jaw crusher to the necessary granularity, and then it is elevated by bucket elevator into material storage silo. Then vibrating feeder transports material uniformly and continuously into grinding room of main engine. The material powder after grinding is rising with blowing stone, and is classified by analyzer in which the matched fineness material is entered along with air pipe line into powder collector and is ejected as finished powder. The air is indrawing by upper return pipe of powder collector into centrifugal induced draft fan, whose air system process is closed cycling with negative pressure to ensure the clean and environment of working site.
2.Ultra-fine grinding process use and maintain
1). Strictly under the rule to operate the machine. Widen the roll clearance before starting the Ultra-fine grinder, when material is entered the machine and adjust the roll clearance to normal.
2).. The Ultra-fine grinding process has a high capacity changing with the roll clearance, so the firmness of transporting belt is being paid more attention especially.
3).Before starting the machine, the sundries inner or surrounding machine should be removed. Use hand to move each part, check veebelt, the tense degree of chain and whether each fixed parts are tighten and the lubrication is normal. For hydraulic and air pressure machines, the hydraulic and air pressure system is normal is also needed to check instead of damage.
4). The problem of belt deflection and sliding can be measured by frequent looking and smelling. Rosin can be spilled on belt and loose the roll clearance properly. If the lapping sound is appearing, it means that part of belt is tripping out and machine should be stopped immediately for repairing.
5). Hold induced draft pipe influent and check the pulverized powder deposited in pipe immediately and periodically.
6). If the gear noise is too large, the reason maybe lay in the tilt equipping of gear box, unbalance between grinding roller and driving wheel, lacking of lubrication oil, incorrect gear tooth profile or too wear and tear, etc.
7). When grinding, material should be uniformly distributed on the whole length of grinding roller, and when the material is reducing or suddenly stopped, grinding roller should be out of work immediately in case of damage.
