Fans for Grain dryers

Medium-pressure axial fans designed for the drying process in installations where high dust levels and larger elements of solids contained in the flowing air can damage the motor. The fan bodies, are equipped with a chamber that effectively isolates the motor from the air stream. The shaped impeller blades, made of aluminium, generate higher pressures and are more resistant to operation in adverse conditions. They are used in modern grain dryers.
Standard diameter range: Ø800 – 1000mm
Capacity range: 20000 – 50400m3/h
Operating temperatures: -20 to +70°C
Installed motor powers: 5.5 – 22.0 kW
Motor speeds: 1500 min-1
Motors fitted with maintenance-free bearings
Motors adapted as standard for speed control by a frequency converter
Steel housings
Corrosion-protected housing – hot-dip galvanised
Optional executions

Explosion-proof
High temperature temperature max: 105°C (WOHT)
Enclosure made of stainless steel
Flow parameters other than standard

Housing:

Perfectly round, machined from structural steel sheet. Equipped on both sides with flanges rolled from the casing shell having connection holes.
Equipped with a separate motor compartment
Equipped with rear guide vane
Protected against corrosion by hot-dip galvanising

Motor:

Asynchronous 3 phase
Supply voltage: 3~ 230/400V; 400/690V
Efficiency class : IE3
Insulation class: F
Degree of protection: IP 55
Cast aluminium or cast iron motor body

Impeller:

Blades and hub made of die-cast aluminium
High-performance blades with special sickle shape for lower noise levels
Lower energy consumption while maintaining high pressures
Dynamically balanced to class G-6.3 according to ISO 1940-1