Type 9-28 fans are generally used in forging furnaces and high-pressure forced ventilation, and are widely used in material transportation. They are suitable for conveying air and gases that are not corrosive, unnatural, and do not contain viscous substances. The temperature of the conveying medium is generally not more than 80 ℃, and the dust and hard fine particles contained in the medium are not more than 150mg / m³. The fan can also be used as a high-temperature fan (replacement of heat-resistant, high-strength materials) used in special occasions outside the cement kiln (machine number 16 and above), steel smelting and other special occasions.
The fan has two types: single suction and double suction. The machine numbers are No4, 4.5, 5, 5.6, 6.3, 7.1, 8, 9, 10, 11.2, 12.5, 14, 16, 17, 18, 20, 21, 22, 23, 24, a total of 20 machine numbers.