Edge of mill drive system all adopt gear transmission device. Drive gear pair cost accounts for about 10% ~ 15% of the mill cost, good lubrication of the large and small gear is to extend gear life, ensure the captain of the grinding cycle is the key to the safe and stable operation. Do a good job in mill drive gear pair lubrication, to prolong the service life, improve the utilization efficiency of mill equipment, ensure the equipment performance in good condition and reduce the maintenance cost is of great significance.
On the market at present, the ball mill drive gear pair lubrication method for small tank of oil lubrication, in using process, find that the lubrication mode has the following defects:
- 1) Will not be able to drive gear on the effective width adequate lubrication, the lubrication effect is poorer.
- 2) The general design of the ball mill large gear service life is 100000 h, according to the rate of 50% utilization of coal grinding equipment calculation, a big gear service life is 23 years. And the big gear of ball mill can generally use 10 years of time, and the wear of the drive gear has a very serious.
- 3) There is a serious oil spill in field, and waste a large number of lubricating oil, so the environmental condition is poor.
- 4) Each ball mill gas at least two times per shift, and has high labor intensity.
According to current situation of pulverized coal mill drive gear pair lubrication, combined with the abrasion of transmission gears, for large and small gear at the edge of the drive, select the appropriate lubrication method and suitable lubricating materials is the key to the lubrication good or bad.
Our experts are studying an automatic oil lubrication system. The automatic lubricating system has the following advantages:
- 1) Due to the use of spray technology, the high viscosity of the lubricant into the spray of stress on the gear surface, the formation of oil film is tough, so that the gear to maintain good lubrication and the life has been improved obviously.
- 2) Lubrication machine electric cabinet is the core of a programmable logic controller (PLC), it is responsible for all the control, automatic and manual work mode to the mill of the need to start the serial number to set up in advance. Has the advantages of high reliability, strong control ability; with external connection to simple and clear, easy to master; display using industrial-grade with backlit LCD TD200, can show Chinese and the instructions is clear, is the lubrication machine automatic control of the optimal solution.
- 3) Centralized lubrication device has the mill and the interlocking function and lubrication failure alarm function.
Fornicate device applying the research result to the ball mill, the ball mill has a very big improvement.