What are the factors that affect the gear lubrication of coal washing equipment?

　　1, temperature

　　 When the temperature drops, the smoothing oil will thicken. When the temperature rises, it becomes thinner. Therefore, low-viscosity smoothing oil is required under low temperature conditions, and heavy oil is required under high temperature conditions to prevent dry conflict between metals.

　　2, speed

　　The faster the sliding and rotating speed, the less time it takes to squeeze the smoothing agent between the gears. At the same time, smooth oil is more likely to agglomerate and thicken under high-speed operation. Therefore, high-viscosity, heavy oil is used for low speed, and low-viscosity oil and thin oil are used for high speed.

　　3, load

　　High-viscosity oil is more resistant to heavy loads and prevents metal-to-metal collisions than thin oils. Therefore, low-viscosity smooth oil is required for light load, and high-viscosity smooth oil is required for high load.

　　4, instantaneous pressure

　　The power generated by the engine needs to be compared with heavy oil to prevent the oil film from splitting and the boundary is smooth, because there is only a small amount of smooth oil left. Under such conditions, a smoothing oil containing extreme pressure increasing agents is required.

　　5, gear category

　　 When using straight teeth, helical teeth, herringbone teeth and bevel gear pairs, sliding and rotating will cause a useful oil film to slow down the direct contact between the meshing gear teeth. On non-equal axis transmission devices such as the turbine worm and hyperboloid gears of coal washing machines, the goal of relative sliding operation is not conducive to maintaining the oil film. In this transmission device, there are often a large number of smooth borders. Therefore, heavy oil is still required in the turbo worm gear and the hyperbolic gear transmission with large eccentricity. When these transmission devices are under heavy load and high pressure, it is necessary to choose smooth oil with high-strength oil film characteristics, high viscosity, smoothness, smoothness or even extreme pressure increase agent.