8-09, 9-12 high-pressure centrifugal fans
1. Application: High pressure centrifugal fan for 8-09 and 9-12 type iron smelting furnaces, suitable for the blowing performance requirements of iron smelting furnaces with melting rates of IL/h, 2L/h, 3L/h, 3L/h, and 7L/h. This fan can also be used as a blower for various forging and smelting furnaces, and is also suitable for conveying air and gases that are non corrosive, non self igniting, and do not contain viscous substances. The temperature of the input medium shall not exceed 80 ℃, and the dust and hard fine particles contained in the medium shall not exceed 150mg/m3.
2. Form 8-09 fan is a single suction fan, with five machine numbers including No.6.8A, 7.1D, 8D, 8.5D, and 9D. The 9-12 fan is a single suction fan with five machine numbers: No6.8A, 7.1A, 7.7A, 8D, and 9D.
Both 8-09 and 9-12 types of fans can be made to rotate clockwise or counterclockwise. Looking from one end of the motor, if the impeller rotates clockwise, it is called a clockwise rotating fan, represented by "clockwise". If it rotates counterclockwise, it is called a 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. The structural characteristics of the 8-09 and 9-12 fans are composed of impellers, casings, air inlets, transmission components, seals, and machine bases. For the 8-09 model, a partially assembled structure is used, while for other models, an integral structure is used.
① Design a new high-efficiency forward fan theory based on impeller blade shape. 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.
④ The transmission system consists of a main shaft, bearing housing, coupling, etc. The main shaft is made of high-quality steel. For 8-09 type No.71D and No.8D, rolling bearing lubricating grease is used for lubrication, while for 8-09 type No.8.5 and No.9, rolling bearing lubricating oil is used for lubrication.

Performance parameter table of 8-09 high-pressure centrifugal fan

Performance Table of 9-12 High Pressure Centrifugal Fan