Product Description of 8-09 and 9-12 Centrifugal Ventilators:
Features: Machine number: 6.8 # -9 # Air volume: 675-9039 m3/h Total pressure: 10523-217931 Pa. Features: Adopting D-type coupling direct transmission, with low air volume, high air pressure, high efficiency, compact structure, and reliable operation. (Explosion proof stainless steel anti-corrosion fans can also be produced) Application: These two types of fans are suitable for general forging furnaces, material conveying, and other high-pressure forced ventilation applications, and are widely used in metallurgy, chemical, papermaking, and other industries.


1. Purpose


The 8-09 and 9-12 high-pressure centrifugal fans are specifically designed for iron smelting furnaces, and are suitable for the blowing performance requirements of iron smelting furnaces with melting rates of 1, 2, 3, 5, and 7 L/h. This fan can also be used as a blower for various furnaces and forging furnaces, and is also suitable for conveying air and gases that are corrosive, unnatural, and do not contain viscous substances. The temperature of the conveying medium shall not exceed 80 ℃, and the dust and hard fine particles contained in the medium shall not exceed 150mg/m3.





2. Type


The 8-09 fan is a single suction fan with 5 different machine numbers: 6.8A, 7.1D, 8D, 8.5D, and 9D. The 9-12 fan is a single suction fan with 5 machine numbers: 6.8A, 7.1A, 7.7A, 8D, and 9D.


Both 8-09 and 9-12 types of fans can be made into two types: clockwise rotation or counterclockwise rotation. Looking from one end of the motor, if the impeller rotates clockwise, it is called a clockwise rotating fan, represented by "clockwise"; Rotate counterclockwise, known as counterclockwise rotating fan, represented by "counterclockwise".


The outlet position of the fan is represented by the outlet angle of the casing, and both "forward" and "reverse" fans can be made into three angles: 0 °, 90 °, and 180 °.


3. Structure


The 8-09 and 9-12 fans are composed of impellers, casings, air intakes, transmission components, seals, and machine bases. For the 8-09 model, a partial assembly structure is used, while for other models, an integral structure is used.


(1) The impeller blade shape is designed according to the new high-efficiency forward fan theory. After the impeller is formed, it undergoes static and dynamic balance correction, ensuring smooth and reliable operation.


(2) The casing is welded with ordinary steel plates to form a snail shaped shell as a whole.


(3) The air inlet is made into a convergent streamlined overall structure, which is fixed to the front cover plate group with bolts.


The transmission system consists of a main shaft, bearing housing, coupling, and other components. The spindle is made of high-quality steel. For 8-09 models № 7.1D and № 8D, rolling bearing grease is used for lubrication, while for 8-09 models № 8.5 and № 9, rolling bearing oil is used for lubrication


Classification of High Pressure Centrifuges: 8-09, 9-12 Centrifugal Ventilators | ZGF-II | 9-19 High Pressure Centrifuges|