‍‍The spray fan is a special axial flow fan, which is mostly used in the longitudinal ventilation system of highways, railways, subways and other tunnels, mainly for ventilation, smoke exhaust and other functions. The following editor will take you to take a look at the introduction of the spray fan in detail.‍‍

‍‍When assembling the spray fan casing, the position of the casing should be aligned with the rotor axis line as the reference, and the axial and radial clearances between the inlet of the impeller and the inlet of the casing should be within the range specified in the equipment technical file at a high speed. , And check whether the anchor bolts are tight at the same time. When adjusting, try to make the gap smaller to improve the efficiency of the fan. When the centrifugal fan is aligned, the different axial degrees of the fan shaft and the motor shaft: the radial positioning shift should not exceed 0.05 mm, and the tilt should not exceed 0.2/1000.

For centrifugal fans assembled with rolling bearings, the bearing holes on the two bearing frames have different axial degrees, which can be subject to flexible rotation after the rotor is installed. The installation of the explosion-proof and anti-corrosion fan unit should be directly placed on the foundation and leveled with pairs of inclined shim irons. For centrifugal fans assembled on site, the cutting surface on the base should be properly protected, and there should be no rust or manipulation. When the base is placed on the foundation, it should be leveled with a pair of inclined shim irons. Before grinding the bearing bush, correct the axis of the rotor and the axis of the casing, and adjust the distance between the impeller and the air inlet at the same time.‍‍

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