我厂使用540×4600双螺旋洗矿机已有十余年的历史．多年的使用实践证明，该机搅轴接头的密封性能较差，一般密封寿命只有半个月左右，有时仅几个小时。由此槽内的泥砂水经常外泄。外泄的泥砂水一部分沿短袖渗入尾部支承轴承内，使轴承迅速磨损。不仅影响了生产环境，而且增大了 I plant the use of 540 × 4600 double spiral ore washing machine has more than ten years of history. Years of practice shows that the joint of the machine stirring shaft seal performance is poor, the general seal of life is only about half a month, sometimes only a few hours. The silt water in the tank is often leaked. Part of the leakage of muddy water along the short sleeve infiltration into the rear bearing, the bearing wear quickly. Not only affects the production environment, but also increased