Case study

Industrial fans for fiber drying

Why industrial fans?

Industrial fans contribute to a healthy working environment and are capable of moving large volumes of air at high negative pressures. Fans are used worldwide and are subject to international standards. These requirements are mainly focused on safety, energy use and fan performance. Our customer has very high demands, especially on safety.

Challenge

In this case the customer designed an installation to dry fibers and needed 140,000 m3/h of air. The temperatures could vary between – 10°C and + 150°C. In addition, they had to be able to build up a pressure of at least 6100 pascals. To guarantee the service life of the fans, they also had to meet very specific coating requirements.

Solution through fiber drying industrial fans

The fans are suitable for placement in an EX zone 22. The construction of the fans is extra reinforced to be able to run at high speeds. Up to 1670 rpm can be rotated. Our fans are equipped with an EX speed sensor to detect and limit the speed of the impeller. The impellers are equipped with counter blades to create under pressure at the shaft passage and also equipped with a graphite shaft seal.  

The fans are constructed with a special housing division so that complete dismantling of the piping is not required during service interventions or when dismantling the fan. These fans are no less than 4.1 meters long, 2.7 meters high and 3.5 meters wide. 

These very robust fans are equipped with an EX motor 400kW of the brand WEG including thermal protection PTC, insulated bearing shield NDE. The aforementioned fiber drying industrial fans were cleaned and degreased and then blasted. A first primer with Intergard 251 and then a 2 component coating Interthane 990. Mechanical guarantees had to be given about the welds and the strength of the impeller. We also provided the following reports: balance report, IFM sensor test, IIA conformity statement, data sheet of the coating including test report of layer thicknesses, FAT report, maximum speed test, installation and maintenance manual. 

In short, a beautiful piece of craftsmanship! 

Take a look at the gallery:

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Please contact us for free advice​

Slingerland Fans understands that it is difficult for companies to indicate exactly what they are looking for. In order to provide companies with the best possible service, we look at the business situation together. Then the possible solutions are discussed so that we can solve your business problem in full consultation.

If you have any questions, we will be happy to help you. You can reach us on +31 (0)33 465 13 92 or by taking a look at our contact page below.