The main bearing is one of the important components of the ball mill, which has an important influence on the operation efficiency of the ball mill. Under the high temperature in summer, the main bearing of the ball mill is prone to high bearing temperature. In severe cases, there will even be a damage on the machine. It will not only affect the operation of the ball mill, but even affect the operation of the entire concentrator. Let us discuss how to solve high temperature of ball mill main bearing pads.
When the ball mill is running, the heat generated by the relative rotational friction of the hollow shaft and the bearing bush increases the temperature of the main bearing. Therefore, the friction can be reduced by replacing the lubricating oil, so that a uniform oil film can be formed on the bearing surface, so as to avoid the temperature increase of the main bearing. The oil film of lubricating oil is related to temperature changes and is greatly affected by temperature changes. During the inspection process of the ball mill, the state of the lubricating oil should be checked in time, and the test should be carried out regularly. When the viscosity of the lubricating oil falls outside the allowable value range, the lubricating oil should be replaced in time.
Cooling ball mill cooling is very important. The cooling water in the main bearing tile casing and the main bearing tank cooler are the two main water consumption of the ball mill main bearing. The temperature and quantity of the cooling water greatly affect the temperature of the main bearing of the ball mill. When the cooling water temperature is low, the lubricating oil drops quickly, and the cooling effect is good. Increasing cooling water flow also reduces the main bearing shaft temperature.
In the actual production, it should be noted to reduce the cooling water temperature as much as possible and increase the cooling water flow. At the same time, attention should be paid to the timely cleaning of the cooler, cooling water pipe and large tile water sleeve. The cooling water and lubricating oil fully exchange to increase cooling efficiency.
The temperature of the ball mill itself is greatly affected by the surrounding environment. In summer, the ambient temperature is high, and the temperature of the ball mill bearing bush is also high. Therefore, the doors and windows of the factory building, the doors and windows of the oil pump room and the observation hole of the large tile should be opened to improve the ventilation conditions of the environment where the ball mill is located, reduce the temperature of the lubricating oil, and thus reduce the temperature of the large tile of the main bearing of the ball mill. In addition, if conditions permit, an axial flow fan can be installed in the oil pump station to increase the circulating flow of air and reduce the temperature of the lubricating oil. The temperature can also be reduced by adding spray water to the oil return pipe and the oil outlet pipe.
The cooler in the ball mill oil pump can be resized. Or connecting a cooler in series increase the cooling area of the ball mill lubricating oil, improve the heat exchange effect of the ball mill lubricating oil, and reduce the temperature of the lubricating oil fed into the ball mill, thereby reducing the bearing bush temperature.
The above are the measures to improve the temperature of the bearing shell of the main bearing of the ball mill in summer. In actual production, the situation is complex and changeable. It is necessary to regularly check the working status of the ball mill and take timely adjustment measures to avoid the failure of the ball mill due to the high temperature in summer, and to ensure the stable and efficient operation of the ball mill.
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