How often should the cone crusher oil be changed?
During the operation of the large-scale cone crusher, when the dustproof rubber ring is seriously worn and causes poor sealing, a large amount of dust is easily invaded in the lubricating oil in the machine body, which causes the oil quality to deteriorate rapidly, resulting in poor lubrication, a sharp drop in service life, and excessive wear of bevel gears. , Broken gear teeth, high-speed rotation of moving cone, shaft holding or scraping etc. Insufficient positive pressure air volume will reduce the positive pressure in the lubricating chamber, easy to absorb dust, and rapidly deteriorate the oil quality. It is necessary to check the positive pressure air volume of the positive pressure blowing system of the crusher frequently.
If the TU type labyrinth seal fails, the crushing cavity and the lubrication system are likely to intrude into a large amount of dust, which will cause the lubricating oil to fail. The labyrinth seal should be checked regularly; after the service period exceeds 2000h, the viscosity of the lubricating oil will drop sharply and must be replaced regularly.
Abnormal oil pressure and oil temperature
When the oil circuit in the large cone crusher or the oil pipe of the thin oil lubrication system is blocked, it is easy to cause the oil pressure and oil temperature to rise at the same time (when the oil return pipe is blocked, oil leaks from the water and dustproof device, so that the water seal drains with oil, but the oil If the eccentric bushing is partially faulty, if the oil temperature is more than 55°C and the oil pressure does not rise, the machine should be stopped to remove the straight bushing and tapered bushing fault;
When the filter is blocked, the oil pressure of the front and rear oil pipes is different. If the oil pressure difference is greater than 0.04MPa, the oil can be supplied without the filter first, and then the filter can be removed and washed, but the oil supply directly to the crusher should be less than 2-3h;
When the oil temperature is low, the oil switch is not turned on, and the oil pump is not running properly, there will be no oil flow in the oil quantity indicator. Although the oil pump is running, the oil pressure is less than 0.05MPa. It is necessary to heat the oil, turn on the oil switch, and repair or replace the oil pump. ;
In winter, the oil temperature is too low, the safety valve fails or the oil pumping capacity is too large. When the oil supply pressure is too large, the broken cone will be lifted. The oil should be heated, the safety valve should be adjusted or the oil pump should be replaced;
Bearings, bushings, shaft sleeves, bevel gears and other parts are faulty, the ambient temperature is too high, there is no cooling water, the cooling water pressure is low or the cooler is blocked, causing the oil temperature > 60 ℃, stop the machine to eliminate the fault, and supply cooling water, Increase the cooling water pressure or clean the cooler.