characteristic:
High efficiency, low noise, small size, strong reliability, and in special circumstances, the air volume can be controlled by adjusting valves. (Can produce explosion-proof) Application: Ventilation and air exchange for high-rise buildings, industrial and mining enterprises, automotive painting, etc. Specification: Fan diameter: Ф280~2000mm、 Air volume: 1130~200000 m3/h, air pressure: 170~2500Pa Type A, Type C, Type E (dual inlet, single inlet), Type D.
The 4-68 centrifugal fan produced by our factory has the advantages of reasonable structure, high flow rate, low noise, and easy installation. This fan is suitable for indoor ventilation and air exchange in general factories and large buildings.


Type:


1. Ventilators are divided into two types based on the airflow intake method: single suction and double suction. Single suction machine numbers include: No.2.8、 There are a total of 12 types, including 3.15, 3.55, 4, 4.5, 5, 6.3, 8, 10, 12.5, 16, and 20; Double suction machine numbers include: No.2-5、 There are a total of 6 types including 2-6, 2-7, 2-8, 2-10, and 2-12.5, with a total of 18 series.


2. Each type of fan is divided into two types: right rotation or left rotation. When viewed from one end of the motor and the impeller rotates clockwise, it is called a right rotating fan, represented by "right"; Rotating counterclockwise is called a left rotating fan, represented by "left".

3. The air outlet angle of the fan can be set to 0 °, 45 °, or 90 ° for both "left" and "right" directions
135 °, 180 °, 225 °, a total of six angles.


4. Transmission methods of fans: There are four types: A, C, D, and E. Type A is used for No2.8-5 #, which is directly driven by an electric motor. The impeller and casing of the fan are directly fixed on the motor shaft and flange (B35 type can be used for electric motors); No6.3-12.5 # adopts a cantilever support device, which is divided into two types: C-type (belt drive) and D-type (coupling drive); No16-20 # is a C-type cantilever support device with belt drive. The dual suction transmission mode is E-type transmission


Structure:


The No2.8-5 # fan is mainly composed of impellers, casings, air intakes, and other parts that are directly connected to an electric motor. No6.3-20 # In addition to the above parts, there is also a transmission part.


1. Impeller: It consists of 12 backward sloping wing shaped blades welded between a conical wheel cover and a flat disc, and is calibrated for dynamic and static balance.


2. Shell: The shell is made of advanced snail wire shape welded with steel plate, and is made in two different forms. The No2.8-12.5 # shell is a whole and cannot be disassembled. The casing of No16-20 # is designed as a double opening, separated along the horizontal plane of the center and connected with bolts.


3. Air inlet: As a convergent streamlined overall structure, it is fixed to the fan side plate with bolts.


4. Transmission group: composed of main shaft, bearing box, rolling bearings, pulleys or couplings, etc. The main shaft is made of high-quality steel, with four machine numbers of No6.3-12.5 # single suction fans, and the overall structure of the bearing box; Two parallel bearing seats are used for two fan numbers No16-20; No2-5~2-12.5 # double suction fans are driven by E-type.
The performance and external dimensions of the fan described in the sample are subject to change without prior notice.






Classification of centrifugal fans: GCF series high-temperature insertion centrifugal fan... | 4-68 series centrifugal fan | 4-79 series centrifugal fan | BF4-72 series high-strength and corrosion-resistant fiberglass... | B industrial large centrifugal fan|