FBD系列弯掠组合正交型隔爆轴流式对旋局部通风机，主要用于矿井及其它工业部门输送含有瓦斯、煤尘及易燃气体的场所，可供煤矿、金属矿山及其它厂矿的矿井掘进、建井、局部通风和隧道长距离通风等。FBD系列一般不允许单机运行，用户可选用相应型号的FB系列局扇。
FBD series skewed-swept orthogonal type explosion proof axial flow type counter-rotating local fan is mainly used in the mines and the places transimissing air containing gas, coal dust and combustible gas in the other industrial sectors. It is suitable for digging, drilling, local and long distance tunnel ventilation etc. in the coal or metal mines and those of the other factories. FBD series generally do not allow single operation and the user can choose the corresponding models of FB series local fans.
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