In the production process, the elastic rubber block coupling block between the reducer and the pinion gear is broken, and the operator thinks that it is a quality problem of the rubber block, and is continuously twisted after replacing the rubber block. Fault analysis and treatment of the ball mill drive system In the production process, the elastic rubber block coupling block between the reducer and the pinion gear is broken. The operator thinks that it is a quality problem of the rubber block. After replacing the rubber block, it is continuously Twisted. After the rubber block is repeatedly twisted, attention is paid to, and the quality of the rubber block may not be a major problem. Then check the ammeter and voltmeter readings. The ammeter reads 44A and the voltmeter reads 5800V. After calculation, the actual power is 255.2 kW, and the actual power of the mill during normal operation should be 240 kW, and the power is increased by 6.3% when the feed amount and the grinding body load are not increased. The breaking of the elastic block is not a problem of the quality of the block, but is caused by an increase in the transfer load.
When the ball mill is working normally, the power consumption of the ball mill consists of two parts. Most of the power is used to lift the grinding body and material, and a small part is used to overcome the friction. The power consumption for lifting the grinding body is mainly related to the amount of grinding and the speed of the ball mill.
According to the failure of the transmission device, after the speed is reduced, the actual power of the mill increases. From the analysis of the power, it can be known that the power of the grinding body is reduced, and the increase of the actual power of the mill is obviously caused by the increase of the frictional power consumption. The frictional power consumption of the ball mill does not increase in the power consumption of the transmission, and the increase is partly due to the increased friction between the hollow shaft and the spherical tile. The lubrication state between the hollow shaft of the ball mill and the spherical tile is divided into boundary film lubrication and hydrodynamic lubrication depending on the linear velocity. According to the theory of hydrodynamic lubrication, the bearing capacity of a plain bearing is related to the characteristic coefficient of the bearing.
The diameter of the hollow shaft of the ball mill is 0.3-0.55 of the diameter of the ball mill. When working at normal voltage, because the hollow shaft has a large size, the hollow axis speed is relatively high, so the lubrication state is in the range of hydrodynamic lubrication, so the friction coefficient of the contact point is relatively small (0.0005), and the frictional power consumption is low. This results in a sharp increase in power that exceeds the safety factor of the entire driveline design. As a result, the elastic rubber block coupling block is broken, and therefore, the main cause of the rubber block being broken is due to an increase in power, and the main reason for the increase in power is due to a decrease in the power supply voltage.
Therefore, the increase in ball mill power due to voltage fluctuations should be avoided in production. Based on the above analysis, it is recommended that the manufacturer take the following measures:
(1) Ensure that the power supply is stable during production, that is, to ensure the stability of the ball mill speed.
(2) Reasonable selection of lubricating oil. When the grade is selected, the viscosity grade should be one level larger. This can avoid the problem of a sudden increase in power when the power supply is unstable. This will make the load of the mill transmission relatively stable, and improve the life and operation rate of the transmission.
(3) Strict lubrication management system, fueling cycle, oil change cycle should be in line with the actual situation, to ensure a reasonable block lubrication state between the hollow shaft and the spherical tile.
Ball mill http://
Cement ball mill http://
Cone energy saving ball mill http://
Ball mill http://
Cement ball mill http://
Energy-saving ball mill http://
Dry magnetic separator http://
Wet magnetic separator http://
River sand magnetic separator http://://news.chinawj.com.cn
Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Wall Mounted Bathtub Faucet,Tub Fixtures Fixtures,Jacuzzi Tub Faucet,Stainless Steel Shower Set
kaiping aida sanitary ware technology co.,ltd , https://www.aidafaucet.com