9-28I type high-pressure centrifugal fan

9-28I type high-pressure centrifugal fan
1. The 9-28 type fan is generally used for forging furnaces and high-pressure forced ventilation, and is widely used for material transportation. It can be used to transport air and gases that are non corrosive, non self igniting, and do not contain viscous substances. The temperature of the conveying medium. The temperature generally does not exceed 80 degrees, and the dust and hard fine particles contained in the medium do not exceed 150mg/m3. This fan can also be used as a high-temperature fan for cement kiln external decomposition process (machine number 16 or above), steel smelting and other special occasions (using heat-resistant, high-strength materials instead).
2. Form
1) This fan comes in two types: single suction and double suction. The machine numbers consist of 20 machine numbers, including 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, and 24.
2) The fan can also be made into two types: right rotation and left rotation. When viewed from one end of the motor, if the impeller rotates clockwise, the fan is represented by "clockwise"; Rotate counterclockwise, called a reverse fan, represented by "reverse".
3) The outlet position of the fan is represented by the outlet angle of the casing, and both "forward" and "reverse" can be made at 0 degrees, 45 degrees, 90 degrees, 135 degrees, 180 degrees, and 225 degrees. There are a total of 6 angles.
4) The transmission modes of the fan are Type A (machine number 4-6.3), Type D (machine number 7.1-16), and Type F.
3. The structural characteristics of the fan No. 4~6.3 are mainly composed of impellers, casings, air inlets, brackets, etc. No7.1~24 in the fan are mainly composed of impeller, casing, air inlet, transmission group, etc. F-type transmission mainly consists of impeller, casing, air inlet, intake box, transmission group, etc. The fan can also be equipped with an adjustable door according to the user's needs.
1) The impeller of the 9-28I type fan has 16 long blades and 16 short blades. After the impeller is formed, it undergoes static and dynamic balance correction, ensuring smooth and reliable operation.
2) The casing is made of ordinary steel plates welded into a snail shaped shell as a whole. For high-temperature fans, heat-resistant materials can be selected according to temperature conditions, and the casing can also be made into separate parts.
3) The air inlet is made into a convergent streamlined overall structure and fixed to the front cover plate group with bolts.
4) The transmission system consists of a main shaft, bearing housing, coupling, and other components. The spindle can be made of high-quality steel or heat-resistant steel according to different purposes, and adopts ball bearings or sliding bearings. Ball bearings are lubricated with thin oil.
4. The performance and selection of the fan shall be converted according to the dimensionless operating point performance table of the fan.