混流泵轴套用来保护轴不使它与填料直接摩擦，若长期使用中发现轴套磨损过多，移动式混流泵销售，必须换轴套。IV. Axile sleeve is used to protect the axle from frictionwith padding.In long term using， change the axile sleevewhen the sleeve wears down too much
