Our plastic centrifugal fans recently came in very handy for an urgent replacement of old fans in the education sector. Read all about how we helped a school in Deventer restart their thorough laboratory research with our PP centrifugal fans here.
Plastic centrifugal fans play an important role in many sectors including education. We recently experienced this in collaboration with our customer. Saxion Hogeschool in Deventer believes in preparing students for a role in a dynamic society. The educational institution for students therefore offers a wide range of courses for IT and economy. In addition, they offer a broad Life science, Design & Technology course. This makes the ability to perform biological and medical laboratory research at school essential and plastic centrifugal fans turned out to be the perfect solution.
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Optimise dust extraction at your company with high-quality centrifugal fans, such as those by Slingerland. Sometimes this is very much needed, as was the case in the situation below. Read all about how we made a different with our pressure surge-resistant fans for a large seed producer here.
We used these pressure surge-resistant centrifugal fans to compose a bespoke solution in various diameters. We will briefly clarify the 2 largest ones:
All centrifugal fans were executed with pressure surge-resistance up to 0.7 bar. The casings were fitted with strengthening ribs and adjusted plate thickness and the fan casings were fully welded. Finally, all these industrial fans were fitted with inspection hatches, condensate drainage and NBR shaft seals.
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With no less than 96 large axial fans, we recently contributed to the construction of a pig slaughterhouse in Mexico. More specifically, it involved a freezing tunnel where carcasses would be stored. Our customer was looking for a bespoke solution for their construction and found it in the axial industrial fans by Slingerland. Read all about it below.
Our axial fans recently proved to be the ideal solution for an important project. Our client, one of the world’s largest systems suppliers for the food, beverage and pharmaceutical industry won a project in Mexico. The project? Build a large pig slaughterhouse including axial fans for a freezing tunnel to freeze carcasses.
The challenge was to find large axial fans that could be wall mounted. After all, they would pull the air over a cooler block and blow it into the freezing tunnel with no less than 96 fans.
Eventually, we found the perfect solution for this client which we completely assembled in-house. A metalworking company specialised in the flange rolling of casings up to 2400 mm in diameter produced axial fan casings on our specific request.
These axial fan casings had a thickness of 4 mm, an internal diameter of 800 mm and a length of 300 mm. The motor mount was entirely welded onto the casing and had a thickness of 6 mm. Everything consisted of standard steel that was hot-dip galvanised afterwards.
The fan casing was fitted with an inlet cone on one side and a flat flange on the other. Since all fixing materials were also hot-dip galvanised, the axial industrial fans were suitable for temperatures between -30°C and + 40°C.
The impeller of the axial fan was made of 3 profiled impeller blades of PAG and fully balanced according to G6.3. The impeller hub consisted of untreated cast aluminium and was fitted with a shaft hole of Ø28H7.
The motor of these hot-dip galvanised axial fans was a custom design as well. These axial industrial fans were fitted with a four-pole 4.5 kW motor of the brand WEG. This was a 3x460V 60Hz motor fitted with a B3 terminal box IP55 and insulation class F bearings.
The motor of these axial fans featured idle heating, PTC sensors for each phase and was resistant to the aforementioned operating temperatures. Finally, it boasted a Labyrinth Taconite shaft seal (for a temperature of -30°C), with Aeroshell 22/Mobil Polyrex EM low-temperature grease.
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Our axial industrial fans recently stole the show. Our client, one of the worlds largest systems suppliers for the food, drink and pharmaceutical industry won a project to fit cooling to a crab trawler and decided to ask Slingerland for a helping hand!
Our axial fans enabled us to deliver a significant contribution to the project. In many countries, fish and crab are some of the main sources of protein. To secure these important sources of food, a huge fleet of crab trawlers is hard at work out in various oceans. After the crab caught is hauled onto these trailers, it needs to be processed and frozen as soon as possible. As a result, proper cooling is essential, and our hot-dip galvanised axial fans play a major role in this.
Our client was on the lookout for axial fans suitable for operating temperatures between -33 °C to +5 °C for no fewer than three crab trawlers. It goes without saying that these industrial fans needed to be able to cope with the aggressive sea climate and be able to pass the necessary maritime inspections.With that in mind, we rolled up our sleeves!
In the end, Slingerland was able to deliver exactly what our client was looking for. The axial fan casings in question were manufactured to our exact instructions with a panel thickness of 3 mm, an internal diameter of 500 mm and a height of 200 mm. The motor base for the axial fans was fully welded to the casing, with a thickness of 6 mm, and the complete fan casing unit was (fully) hot-dip galvanised.
In addition, a sheet steel inlet cone was fitted to one side of the fan, while a flat flange with a hole pattern was fitted to the other side. The fan impeller was made out of five profiled PAGI impeller blades, ensuring high efficiency and low noise. The hub was manufactured out of cast aluminium and the impeller was fully balanced according to G6.3. All fasteners were made of stainless steel, and our fans eventually proved suitable for temperatures ranging from -40 °C up to +40 °C.
A special finish was required for the motor, as it needed to be suitable for continuous operation at -33 °C in a maritime environment. As such, we fitted our axial fans with a four-pole 2.2 kW motor by leading manufacturer WEG. The motor in question was a 3 x 460 V /60 Hz-IP55 version, suitable for environmental temperatures ranging from -40 °C up to + 45 °C. Finally, the motor came with additional options such as a PTC thermistor per phase, anti-condensation heating, a labyrinth seal, shaft and fastener materials made of Grade 316 stainless steel, an aluminium cooling fan, special lubricant and a C5 painting plan.
Of course, the necessary maritime inspections, such as RMRS and BV, were also arranged. We subsequently assembled the axial fans in-house and tested them extensively. The end result? All the pieces fell into just the right place.
Are hot-dip galvanised axial fans the exact solution that your business is looking for? Or have you got a specific project in mind for which you need another type of industrial fan? We’d be happy to sit down to personally run you through the options without obligation! Feel free to contact us any time for more information.
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Our stainless steel industrial centrifugal fans have recently been put to good use at a mushroom sector company with ambitions to fully commit to circular agriculture and sustainable processes. Slingerland held extensive consultations with the client in question to arrive at the perfect final solution. Continue reading to find out all about it.
Slingerland’s stainless steel centrifugal fans have recently been put to good use to contribute to circular agriculture in the mushroom supply chain. Our client, already one of the most high-tech mushroom growers in the world, had the ambition to modernise its processes even further. Their aim is to grow mushrooms in a more environmentally conscious way, and they’re doing so by finding high-quality applications for the residual flow of the growing process via mushroom compost, in addition to generating their own energy. To achieve that ambition, the company started building a biomass plant and mushroom compost drying facility, at which our industrial fans play a crucial role.
At this mushroom compost drying facility, our stainless steel centrifugal ventilators are used to work alongside a conveyor belt dryer. During this process, the mushroom compost is dried before being turned into pellets. These pellets can then be used as a sustainable substitute for artificial fertiliser, which completes the cycle in a really neat way! The energy for the drying facility is provided by a biomass plant that supplies heat and electricity generated from regional wood cuttings obtained from sustainable woodland management.
For this project, Slingerland supplied eight stainless steel centrifugal ventilators, each with a capacity of 150,000 m3/h at 1200 Pa at 60°C. These industrial fans come equipped with a 110kW six-pole WEG motor. The parts that come into contact with the airflow are made of grade 304 stainless steel, and the motor bracket, which is made of normal steel, has a special coating. The fans are manufactured to ATEX standard with EX inlet cones suitable for use in Zone 22.
The Class III stainless steel impeller is fitted with backwards-curved blades, including counter blades on the rear side to create negative pressure at the shaft passage and to reduce dust build-up at the shaft seal. In addition, these stainless steel centrifugal fans are fitted with a copper-ring shaft seal suitable for ATEX situations and resistant against high temperatures. The fans are also equipped with aluminium cooling fans for extra motor cooling.
Finally, two inspection hatches are fitted to the fan casing to allow for regular inspection and cleaning. An IFM EX speed sensor has also been fitted to provide extra protection against overspeed. The fan casing is manufactured in three sections for easier transport and is simple to maintain. An FAT test was performed upon delivery, including a running test at maximum RPM. We delivered the fans with balancing reports, material certificates, coating certificates and a sensor function test.
Our grade 304 stainless steel centrifugal ventilators offered the perfect solution to this unique situation. They’ve also found another fantastic application in fibre drying (see this similar project), and they were the perfect fit for this animal feed drying installation. If you’ve got a project or company at which our industrial fans can lend a helping hand, we’d be happy to sit down run through the options during a no-obligation appointment!
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An industrial fan made from 304 stainless steel is the ideal solution if you’re struggling with poor extraction, especially in humid environments with higher temperatures. We have all kinds of fans on our range at Slingerland. Read here how we helped a Dutch company optimise its production process with industrial stainless steel fans.
304 stainless steel centrifugal fans are mainly used in the pharmaceutical and chemical industries and, as is the case here, the food industry. For example, one of our customers – an industrial processes service provision company from Eindhoven – recently received a request from a client. This innovative, leading European pet food company produces branded products for pets and private-label products for retailers. They wanted a solution for their steam tunnel extraction in the production process. Our customer came to us with this request, and together we looked for a suitable solution, which turned out to be our industrial stainless steel fan.
What problem does this industrial stainless steel fan need to resolve, exactly? To prepare the pet food – specifically for dogs in this case – ground offal is cooked in steam tunnels. Highly contaminated steam vapours (approx. 90°C), which also contain fats, are released during this process, and therefore cannot be easily extracted. Our customer initially enquired about plastic fans, but we recommended they should opt for industrial stainless steel fans because of the higher temperatures and the humidity levels in the room.
Once the decision had been made for industrial stainless steel fans, our customer installed extraction hoods above the pet food company’s steam tunnels. The vapours then had to be extracted before they could be removed by the hoods. We provided two different types of fans for this – supplying 3x BPR 352C with a 0.25kW WEG motor and 3x BPR 632C with a 1.50kW WEG motor. As you can see, Slingerland is all about versatility!
Our centrifugal fans are manufactured entirely from 304 stainless steel and include:
We’re also supplying:
These industrial centrifugal fans are usually installed in a fairly dirty environment, so we provide an additional coating on the motors. In our warehouse, we also fit an isolating switch on the fans, including connection for the motors with an EMC cable and fittings. Delivered ready to plug in!
Do you also struggle with inadequate extraction of troublesome vapours in your company? Then don’t hesitate to contact us for expert advice with no obligation. As well as industrial stainless steel centrifugal fans, we also have numerous other fans and will be happy to go through your options with you. Speak soon!
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Need to find the best fan for extraction in a blasting and conservation hall? You’re in the right place with Slingerland! Read here how we helped a manufacturer of blasting and spraying booths with the ideal medium-pressure centrifugal fans, so their customer could carry out their work with ideal air management.
We make a difference every day at Slingerland, with top-quality industrial fans. In this case study, a leading company in the Netherlands, which specialises in spraying XL products in mega coating halls, was looking for an all-in solution for blasting and spraying products. Products of this size are usually blasted and sprayed in separate halls, which of course means a lot of time is taken up with transportation.
The company in question made an enquiry to our client – a manufacturer of blasting and spraying booths, powder coating installations and pre-processing lines – who built a fantastic installation, exactly in accordance with their customer’s requirements. They used Slingerland’s efficient medium-pressure fans, designed specifically for industry, so that the entire air management system functions exactly as required.
This company’s challenge was to choose the right industrial fans, not just with the desired flow rate and pressure, but which were also explosion-proof. They also needed to be suitable for outdoor use.
The solution? Type TR 1121 directly-driven centrifugal fans. These high-pressure centrifugal fans have an extra external coating, which makes them 100% weatherproof. We’ve also added an extra layer to the centrifugal fans’ WEG motors, so they’re the ideal fans for extraction in a blasting hall!
These medium-pressure fans can each extract air at 32,000 m3/h, with a static pressure capacity of 4110 pascals at 15°C. With a power consumption of 47.6kW, we were therefore able to select a fan with 83.8% efficiency and a very low noise level. We ticked all the boxes one by one, resulting in a happy customer!
Are you also experiencing problems with the air management in your company, and you’d like to meet us with no obligation to see what we can do for your business process? At Slingerland, we’re happy to invite you for a personal consultation, in which we run through which centrifugal or other industrial fans would be suitable for your project. Contact us here for an appointment. Speak soon!
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Opting for the right plastic centrifugal fan can make all the difference to your plant’s operations. And that’s why one of our customers – the maintenance provider of a leading plastic (polyethylene) bottle recycling plant in the Netherlands that processes up to 75,000 tonnes a year – recently approached us with an extraction-related challenge. The company is responsible for cleaning and recycling plastic bottles. However, due to the rigorous nature of cleaning these products require, this type of process usually leaches a significant amount of caustic, sodium hydroxide fumes. Naturally, a solution had to be found.
Acids and bases have what is known as a corrosive effect, i.e. they damage material surfaces. That’s why acids and bases are also frequently used to clean dirt from surfaces. In this case, they are used to clean old plastic bottles. The plastic from these bottles, after it’s been cleaned and shredded, is intended for reuse in the production of food packaging.
The advantage to sodium hydroxide (also known as lye or caustic soda) is that it’s extremely thorough; plastic bottles cleaned with it can be reused worry-free. Aside from cleaning plastic, though, it also leached fumes into the air, damaging the nearby washing lines in the process. Consequently, it didn’t take long before internal damage to various materials and objects at the plant was discovered.
Working with our customer, we decided to install plastic centrifugal fans for sodium hydroxide fumes in the plant. These welded fans, especially designed for the chemical industry, are completely chemical resistant. In total, we’ve supplied six different types, with two of the series’ largest featuring in the pictures.
These PP welded fans are two 900 mm RMVs, equipped with 6-pole 11 kW motors. Before delivery, we installed the plastic fans in an acoustic enclosure, equipped with flexible connections, so that the customer could easily install them on site. The overall dimensions of this acoustic enclosure were 2500 mm long, 1500 mm wide and 2500 mm high. Lastly, all centrifugal fans were equipped with a PP impeller, HDPE housing, and stainless steel mounting materials.
Slingerland plastic centrifugal fans effectively prevent internal damage to your washing line’s components. At the end of the day, highly aggressive processes require robust, chemically resistant solutions.
Are you in a similar predicament? Would you like to talk with our experts at a no-obligation consultation? Please contact us. We’re happy to help!
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Our customer has extensive experience with HVAC systems for the offshore industry; an industry often dealing with extreme weather, tropical environments with high temperatures and humidity levels to extremely cold conditions with very low temperatures. In this case, it was a project in the North Sea. The fans that we supplied were used to cool the transformer rooms and ventilate the other rooms.
At Slingerland, we work with our customer to develop tailor-made solutions for any type of vessel, construction or facility. We have extensive experience on board almost all types of ships. We are not afraid to think outside the box and include customer specifications in custom offshore fans, no matter how demanding.
In this case, a combination of free-running centrifugal fans and axial fans with both short and long housings was chosen. A number of models are made in ATEX.
Our axial fans were constructed from materials suitable for an offshore application. Housing for the fan and the motor foundation are made of stainless steel 316, pickled and passivated. The very solid and efficient plastic impeller is equipped with an anodized aluminum hub which is then provided with a maritime coating. Operating points for these fans vary from 70 m³/h, 150 pascals to 41,000 m³/h, 500 pascals. Diameters range from ø310mm to ø1000mm.
The fans with the size ø1000mm are intended for the main transformer room, they are provided with special reinforcements for horizontal installation on vibration dampers. All flange connections are customer-specifically produced according ISO15138, for easy connection to the ductwork. Fans are provided with stainless steel 316 mesh grille, mounting material in stainless steel 316, motor support thickness of 6mm, fan housing thickness of 4mm. Suitable for temperatures from -15°C to +50°C. The fans are equipped with motors varying between 0.12kW-4p and 15kW-4p in marine version with a special C5/CX coating system, stainless steel 316 shaft, space heaters, stainless steel 316 mounting materials, adapted terminal box, PTC sensors, and executed according to DNV-GL with mention on stainless steel type plate.
Our free-running centrifugal fans were completely made of stainless steel 316, both the impeller and the motor base frame. The entire construction is afterwards shot blasted. Furthermore, the suction cone is provided with a measuring point. The fans are suitable for operating temperatures from -10°C to +45°C. The operating point in this case is 10,000 m³/h, 1434 pascals. Fans have a flexible connection with stainless steel 316 flanges. Furthermore, the fans are equipped with a 7.5kW motor in marine version with a special C5/CX coating, stainless steel 316 shaft, space heaters, stainless steel 316 mounting materials, adapted terminal box, PTC sensors, and executed in accordance with DNV-GL with indication on stainless steel name plate.
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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.
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.
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!
Read also: “Why you should buy an industrial fan”
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.
