摘要：针对动叶可调双级轴流风机长期运行中叶片磨损造成转子质量不平衡，引起风机振动增大的问题。

Abstract: the vibration increasing of adjustable vane double-stage axial flow fan caused by the rotors mass unbalance for the vane abrasion in long period running is a main malfunction.

youdao

本发明的叶片磨损小、可达到双吸双磨功能、磨煤效率高、耗能少、无需密封、煤粉细度可达200目以上、主轴传动部分不发热、结构紧凑、体积小、功率大、成本低。

Its advantages are less abrasion of blades, high efficiency and fineness of coal cup to 200 meshes or more, compact structure, small size, high power and low cost.

youdao

叶轮：严重汽蚀(特别是主叶片)、过度腐蚀、磨损、破损时，要求更换叶轮。

Impeller: Sure to change impeller if it has serious cavitations (main vanes in particular), over corrosion, wear and tear and breakage.

youdao