我厂纺丝车间排风度装备了多台4-72-12D型离心风机,该机采用机械油润滑,由于轴封漏油无法控制,从1987年投运以来,该机轴承因缺油损坏和电动机过载烧毁现象时有发生.为此,我们对轴封进行了改进,并于1995年11月在8~#机上进行了新旧轴封性能对比试验.试验结果表明,新轴封密封可靠,安装调试方便、简单,填料寿命长、无泄漏,检修时间由原来几小时减少到1小时左右,劳动强度也大为减轻.目前,该轴封已推广应用. I plant spinning workshop exhaust degree equipped with more than 4-72-12D centrifugal fan, the machine adopts mechanical oil lubrication, due to shaft seal oil can not be controlled, put into operation since 1987, the aircraft bearing due to lack of oil damage and Motor overload burned phenomenon occurred.To this end, we have improved the shaft seal, and in November 1995 on the 8 ~ # machine shaft seal performance comparison test.Experimental results show that the new seal seal reliable, installation Debugging convenient, simple, long filler life, no leakage, overhaul time reduced from a few hours to about 1 hour, labor intensity is also greatly reduced.At present, the shaft seal has been widely used.