Ultrafine Mill Daily Maintenance
Ultrafine Mill roller bearing replacement workload is very large, fully prepared spare parts, the replacement of Ultrafine Mill roller or a Ultrafine Mill roller bearing the fastest need about 7 days, and the replacement of high cost, resulting in economic losses Larger.
Therefore, in order to ensure the normal operation of Ultrafine Mill roller bearings, in the routine maintenance need to do the following:
- 1, to ensure the normal operation of sealed fan, the wind pressure should not be lower than the specified value, under normal circumstances to maintain more than 20Bar, to regularly check the seal duct for damage; mill cavity sealed duct and mill roller connection Joint bearing flange is disconnected. At the same time in order to ensure that the positive pressure roller into the Ultrafine Mill clean, be sure to install filters and filter cloth at the entrance to the fan to prevent the micro-particle material into the Ultrafine Mill roller seal air chamber, damaged Ultrafine Mill roller seal And seal, resulting in Ultrafine Mill roller leakage.
- 2, Ultrafine Mill roller Back to the tube vacuum determines the vertical grinding mill cavity oil level, in order to maintain vertical grinding mill oil level is relatively stable, vacuum pressure adjustment must be cautious, it is directly related to Ultrafine Mill Roller bearing lubrication state. Oil pressure is too high, Ultrafine Mill roller oil level rise, the fuel is too high, can easily lead to Ultrafine Mill roller leakage, or even damage to the oil seal; hydraulic pressure is too low, Ultrafine Mill roller oil content is low or lack of lubrication Insufficient damage to Ultrafine Mill roller bearings. The adjustment range of general vacuum is between -0.10 ~ -0.35bar.
- 3, to regularly check the Ultrafine Mill grinding roller lubrication system operation, such as oil temperature is normal, the normal production of oil temperature should be 52-53 ℃, Ultrafine Mill roller and the tank connected between the balance of whether there is congestion, whether the vacuum switch Normal, tubing joints and hoses without damage leaks, return pipe work is normal and so on. At the same time, we must closely observe the tank level changes, when found abnormal fluctuations in the fuel tank, we must carefully analyze the causes, find the crux of the problem, timely treatment to prevent oil shortage caused by bearing damage or excessive fuel Ultrafine Mill roller Seal was broken.
- 4, regular grinding roller on both sides of the ring to add grease. The general addition period is one month. In the vertical grinding roller hot and hydraulic jacking to join, while adding edge artificial disc roll mill, can not be added too much, so as not to squeeze oil seal.
- 5, regular testing of oil quality, testing oil content of metal particles in order to determine the bearing damage. At the same time to keep the oil clean, according to the oil quality and oil filter replacement interval to determine whether to change the oil.
- 6, attention to mill heating and cooling operations. Most manufacturers do not pay attention to the Ultrafine Mill heating and cooling operations, do not realize that a reasonable heating and cooling operations can extend the life of key large bearings and wear parts. Reasonable heating rate can make the roller sleeve, liner, bearing uniform heat, thereby extending liner, sleeve and key bearing life in the mill spare parts of these key parts of the price is more expensive, any one of the parts is damaged Will directly affect the mill’s operating cycle.
- 7, in the mill for welding construction, we must pay attention to the welding parts and grounding, welding current can not be through the bearing or twist, or it will damage the bearing or twist.