Reasons and measures of the ball mill bearing high temperature
Reasons and measures of the ball mill bearing high temperature ?
There are many reasons that cause the temperature rise of ball mill bearing, which need to be analyzed and take appropriate measures.
Reason 1: Poor lubrication of ball mill bearing
According to statistics, bearing damage caused by poor lubrication accounts for 40%, mainly reflected in:
1. Too much or too little lubricating grease;
2. Lubricating oil pipe is blocked;
3. Improper selection of lubricating oil or impurities in lubricating oil;
4. Failing to add lubricating oil in time;
Solutions:
1, according to the oil standard, control the amount of oil, not too much or too little;
2. Clear the blockage of lubricating oil tubing in time;
3. Select high-quality lubricating grease or lubricating oil recommended by the equipment manufacturer;
4. Oil the bearing box regularly according to work requirements;
Reason 2: ball mill bearing wear
Most ball mills operate in a wet environment. When some fine dust enters the bearing block of a ball mill running at high speed, the lubricating oil in the bearing block will deteriorate and the quality will deteriorate, leading to the wear of the bearing of the ball mill.The running of ball mill bearing in the state of wear and tear will increase the friction force and increase the heat, which will lead to the rise of ball mill bearing temperature.
Solutions:
The bearing box and bearing of the ball mill shall be cleaned and the oil pipeline shall be checked and unblocked in the maintenance process because of the wear of the bearing of the ball mill caused by the lubricating oil.Ensure different types of grease are not mixed;If other types of lubricating oil are changed, the original lubricating oil shall be cleaned before oil change.
Note: grease storage shall be well protected against moisture and dust, and the lubricating oil of the same brand and model shall be selected as far as possible.
Reason 3: improper ball mill bearing installation
If it is found that the ball mill bearing will produce torque or deflection when it rotates, it will be proved that the ball mill bearing is improperly installed. In addition, the bearing will also produce vibration and noise increase, which are also caused by improper installation of the bearing. These are the causes of rapid heating of the ball mill and wear.
Solutions:
When the above problems are found, the running speed of the ball mill should be reduced. When the temperature drops, the machine should be stopped and the bearing of the ball mill should be corrected. If the wear is serious, the bearing should be replaced.
Reason 4: ball mill bearing cooling is insufficient
Generally, the insufficient cooling of ball mill bearing is reflected in the lubricating oil pipeline blockage, improper selection of cooler and poor cooling effect.Fouling and clogging of the coolers in the lubrication pipeline will worsen the cooling effect and lead to the rise of bearing temperature, which is common in the production process in summer.
Solutions:
For insufficient cooling of ball mill bearing, it is necessary to check whether the pipe is blocked, whether the oil inlet temperature and the return water temperature exceed the standard.If the scale of the cooler is blocked, the effective treatment method is to carry out pickling to remove the scale of the cooler before the beginning of summer every year;If the cooler is not selected properly and the cooling effect cannot meet the requirements, it is necessary to replace the cooler in time or install a new cooler side by side.
Reason 5: ball mill coupling alignment process is not up to the requirements
The alignment process of the ball mill coupling is not up to the requirements, which will lead to the dynamic and static imbalance of the rotor, resulting in excessive vibration of the ball mill bearing, resulting in wear and temperature rise of the ball mill bearing.
Solutions:
Once vibration of ball mill bearing is found, check the situation first. If alignment process of coupling is not up to standard, alignment operation shall be improved through technology.Due to the deficiency of the foundation, it is necessary to stop the vehicle to improve the foundation and ensure the foundation is filled;If the bearing is bent, replace the bearing in time.
Reason 6: ball mill bearing inspection and replacement is not timely
Generally, if the bearing of the ball mill appears fatigue spalling, oxidation corrosion, worn pits, cracks or excessive noise phenomenon, it will cause the bearing to heat, abnormal sound and other conditions.In addition, improper disassembly of the bearing and vibration caused by the loosening of the anchor bolt of the equipment will also cause the bearing raceway and rolling body to produce indentation, cracking of the inner and outer seat ring of the bearing, resulting in heat of the ball mill bearing.
Solutions:
Timely replacement of bearing;In the running process of ball mill bearing, periodic inspection, overhaul and other operations should be carried out according to the provisions.
In the process of running the ball mill, the bearing temperature is too high, not only because of the reasons mentioned in the appeal, but also because of poor bearing quality or improper bearing selection.In the way to solve the ball mill temperature is too high, in addition to be able to timely find the problem to solve the problem, in the purchase, selection and other aspects also need the main, the best choice of trustworthy, good reputation of the manufacturer, in order to comprehensively improve the efficiency of the ball mill.
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