我厂热电车间投用的G Y4-68型锅炉离心送、引风机,投运后一直存在轴端严重泄漏现象,风机在运行数小时后,轴承箱就已缺油,直接威胁机器的安全运转,并造成润滑油的大量浪费。为此,我们对该类型风机轴端封油结构进行了改进。即在原结构(图1)的基础上,在轴承压盖1的A处加工两道宽3mm、深2mm的环形 I plant thermal power plant put into use G Y4-68-type centrifugal boiler to send, induced draft fan, shaft put into operation there has been a serious leak phenomenon, the fan running hours, the bearing box has been lack of oil, a direct threat to the safe operation of the machine , And cause a lot of waste lubricating oil. To this end, we have this type of fan shaft sealing structure has been improved. That is, on the basis of the original structure (FIG. 1), two annular grooves 3 mm wide and 2 mm deep are machined at A of the bearing gland 1