Axial fans can be used for ventilation and ventilation in general factories, warehouses, offices, houses, etc., and can also be used for air coolers (air coolers), evaporators, condensers, spray drops, and so on. There are also mine axial flow fans. Anticorrosive and explosion-proof axial fans adopt anticorrosive materials and explosion-proof measures, and match explosion-proof motors, which can be used for transporting explosive, volatile and corrosive. The gas required for axial flow fans should have no significant dust, no sticky and fibrous substances, direct motor type temperature should not exceed 40 degrees, and belt drive temperature should not exceed 60 C. The amount of dust transported by gas should not exceed 150mg/m3. The axial flow fan is mainly composed of impeller, casing, motor and other components. The impeller and housing of the anticorrosive axial fan are made of FRP, and other types of axial fans are usually made of steel plates.
When the impeller rotates, the gas enters the impeller axially from the inlet, and is pushed by the blade on the impeller to increase the energy of the gas and then flow into the guide vanes. The guide vane deflects the deflected gas flow into axial flow. At the same time, the gas is introduced into the diffuser tube, which further converts the kinetic energy of the gas into the pressure energy. Finally, the working pipeline is introduced. The work of the blade is similar to that of the aircraft wing. However, the latter is lifting the lift up to the wing and supporting the weight of the aircraft, while the axial flow fan is fixed and moving the air. The cross section is usually the wing section. The blades can be fixed or rotate around their longitudinal axis. The angle between blades and airflow or blade spacing can not be adjusted or adjustable. Changing the blade angle or spacing is one of the main advantages of axial flow fans. The small blade spacing angle leads to lower flow rate, while increasing the spacing can result in higher flow rate.
Advanced Axial fan The blade spacing can be changed when the fan is running (which is quite similar to that of the helicopter rotor), thereby changing the flow accordingly. This is called an adjustable blade (VP) axial flow fan. It is a kind of fan commonly used by industrial and mining enterprises, but it is different from the general fan. Its motors and blades are all in a cylinder. The shape is a cylinder, which is used for local ventilation, convenient installation, obvious effect of ventilation and air exchange, safety, and can be sent to the designated area by the wind tube.