Raw material vertical slow roll lubrication system improvement

Raw materials 2020 - slow roller lubrication system improvement 10 - 17 Yang Yirun Lu Guangjun ( Hebei jidong cement group equipment research and development center) Developed by a company more than one material vertical roller mill, has subsidiaries in production operation in the company. In December 2009 in Inner Mongolia, combining the flag, ga production of roller mill, the phenomenon of the roller air cap injection, and in the normal operation of the other subsidiaries. To this phenomenon, the company has carried on the detailed discussion and analysis, considered the main reason is that Inner Mongolia cold weather and long time, the oil will become sticky; Another pump set back near the roller lubrication system of oil tank, and the connecting line between roller and a long, cause negative pressure is not enough, back to the oil pump in the hydraulic system reached the use requirement, can't make the viscous oil in time back to the fuel tank, oil roller memory caused more and more, the last injection. So tried for pipelines to add the tropics, the lubricating oil pipeline temperature ascension, but because of the line is too long, the environment temperature is too low, The lowest temperature da 30℃) Measures, the effect is not obvious. To solve this problem, the company in return pipe roller side of the road increases a set back to the oil pump device, used to supplement the tank side back to oil pump, when when there is a poor oil return line back, start the pump back oil return ability is greatly increased. Set up branch connection oil pipeline at the same time, to ensure the roller insufficient internal lubricating oil will not be back to pump more burn out ( See figure 1) 。 If the environment temperature is appropriate without having to use the add back to the oil pump, as long as the short-circuit, open the parallel branch will add back to the pump back close to the oil pump. In addition, because the temperature is too low to keep the line heating zone, in order to reduce the influence of environment temperature on the oil. Figure 1 roller lubrication improvement sketch was provided concrete implementation, will be back to the oil pump placed in the bridge of the mill frame, according to the figure 1 site configuration line. This location near the roller lubrication oil line back roller oil outlet, and would facilitate inspection ( Maintain bridge and mill maintenance platform at the same level; Back to the oil pump is placed at the mill bridge free position, opinion in figure 2) 。 Figure 2 new oil pump is placed back signal after above improvements, the mill roller lubrication system work is normal, not heavy oil again. So the design of the mill and the equipment installation and use, according to the actual scene to adjust or related supporting equipment, so that the grinding machine for normal and stable operation. （ Source: China cement spare parts network)