What are the difficulties in the manufacture of centrifugal fans

　　What are the difficulties in the manufacture of centrifugal fans? Centrifugal fans generally use aluminum impellers and are equipped with explosion-proof motors. They are suitable for the transportation of gas, biogas and other gases as the medium. The 9-19 9-26 8-09 9-12 series are usually used. For fans, the pressure of these centrifugal fans is generally below 23000pa, and the impeller can still be cast. However, the casting of these two types of high-pressure and small-flow fans with pressures above 30,000pa, 9-04 9-06, has become a difficulty in the manufacture of the entire fan.

　　What are the difficulties in the manufacture of centrifugal fans? After communicating with dozens of foundries, it is found that the outlet of the centrifugal fan impeller is too small, only about 10mm or even narrower, and the impeller diameter is generally above 800mm. Many centrifugal fan manufacturers It is also difficult to manufacture, either because the impeller outlet is too small, or because the impeller diameter is too large, it cannot be cast. And AFL has professional technology and more than ten years of experience in making such centrifuges.

　　The outlet size of this kind of fan is smaller than the outlet of the multi-stage high-pressure centrifugal fan impeller, and the accuracy is high. Other ideas for solving explosion-proof, such as the use of cast copper impeller or the casing of cast aluminum have the same problem. Therefore, the current centrifugal fan Fans cannot be manufactured in explosion-proof type, and Roots fans are generally used instead. AFL uses professional production equipment and technical personnel to overcome technical difficulties, and now has a number of patents.>>>MORE news