Air swept coal mill ball mill

This mill is an edge drive driven by an electric motor through a reducer and large and small gear pairs. The mill adopts an air-swept structure with a drying bin, which makes the mill more adaptable to the moisture content of raw coal. The grinding bin is sequentially equipped with stepped linings, double-stepped linings, corrugated linings and other combined arrangements to improve The grinding capacity of the mill. The feeding device adopts a louver-type structure with oblique air inlet, which enhances the heat exchange capacity of the mill and can effectively prevent material blocking at the coal mill inlet.
. Working principle
. The raw coal enters the feeding device of the mill from the feeding equipment. The hot air with a temperature of about ℃ also enters the feeding device through the air inlet pipe. The drying bin is equipped with a special fan. The material plate lifts the raw coal so that the raw coal undergoes strong heat exchange here to obtain drying. The dried coal blocks enter the grinding bin through the double-layer compartment plate equipped with the material lifting plate. The grinding chamber is equipped with grinding bodies (steel balls) where the coal blocks are crushed and ground into pulverized coal. While the coal is being crushed, a special induced draft fan will take the crushed coal and gas out of the mill through the discharging device of the mill. The coarser particles will return to the grinding bin through the return spiral of the discharging device. Grind again within 1 minute.
. Zhongke’s analysis of the machine failure areas and maintenance methods:
. Failure: cutting the steel strip. Cause: cutter wear or failure. Repair method: check whether the cutter or cutter holder is worn or malfunctioning. If the wear is serious, it should be replaced
. Failure: The tension of the lock clamp is not enough. Cause: The connecting hole or connecting pin of the clamping block is worn. Repair method: Check these parts when the groove depth is shallow and replace if necessary
. Failure: The belt feed does not stop. Reason: The tongue door of the belt path or bow frame is not reset. Repair method: Adjust the spring elastic force or replace the spring
. Zhongke teaches you what you should pay attention to during use:
. Please confirm the machine Do not plug in the wrong power supply. This machine adopts a three-phase four-wire system. The flower wire is a grounded neutral wire for leakage protection. Do not touch the heating element directly with your hands. Do not put your head and hands through the belt track during operation. Do not flush the machine with water. Operators should not work barefoot when the workplace is wet. Do not allow oil to stick to the surface of the conveyor roller. Do not replace parts on the machine at will. The main parts should be lubricated with oil regularly.