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螺旋密封使给水泵的转子与定子之间不存在磨损现象 ,寿命较长 ,在运行状态效果较为理想 ,但当停泵时经常会出现轴封部位大量泄水 ,甚至窜入轴承体的现象。为此 ,进行了改进 :在原螺旋密封轴封部位的外端加上 2圈填料 ,在泵运行时 ,螺旋密封起主要作用 ,在泵停机时 ,填料密封发挥作用 ,封住了轴封处的外泄水
Spiral seal to the feed pump rotor and stator there is no wear and tear between the phenomenon of longer life expectancy in the operation of the ideal, but when the stop pump often appear large parts of the shaft seal drainage, and even fleeing into the bearing body phenomenon. To this end, an improvement has been made: adding two fillings to the outer end of the original helical seal shaft seal. The helical seal plays a major role in the pump operation. When the pump is shut down, the packing seal functions to seal the Excretion of water