The main purpose of the 4-72 centrifugal fan is to provide indoor ventilation, air exchange, cooling and dust removal for general factories, mines, sports venues, opera houses, basements, hotels, restaurants, shopping malls, and large buildings, as well as to transport air and other non self igniting, non explosive, non volatile, harmless to human health, and non corrosive gases to steel plates; It can also be used in conjunction with other types of mechanical equipment for gas circulation.
B4-72 centrifugal fan can discharge flammable and volatile gases;
The F4-72 centrifugal fan is mainly used for transporting corrosive gases;
The gas transported by centrifugal fans 4-72, B4-72, and F4-72 shall not contain viscous substances, and the dust and hard particles shall not exceed 150mg/m3. The gas temperature shall not exceed 800C.
structural performance
The 4-72 series fan is mainly composed of impeller, casing, air inlet, motor and other parts. In addition to the above structure, the No. 6C and No. 8-20 also have a transmission part, which has the characteristics of high efficiency, low noise, and smooth performance curve.
1. Impeller - composed of 10 aft tilting airfoil blades, curved wheel cover, and flat rear plate, made of steel plate (B4-72 made of cast aluminum alloy), calibrated for dynamic and static balance and tested for smooth and reliable operation, with good air performance. 2. Chassis - made in two different forms, among which 2.8-12 # Chassis are made as a whole and cannot be folded open. 16-20 # is made into a three open type, with the upper half vertically divided into two halves along the centerline, in addition to being horizontally divided into two halves. It is connected by bolts for easy installation and maintenance of the impeller.
3. Air inlet - overall structure, installed on one side of the fan, with a curved cross-section parallel to the axial direction, designed to facilitate smooth airflow into the impeller with minimal loss.
4. Transmission - composed of main shaft, bearing housing, rolling bearings, pulleys or couplings.

Zhangqiu Chuangke Fan Co., LtdEstablished in 1986, the enterprise has developed into a fan manufacturer with 30 years of experience in the design and production of the fan industry. The company adopts a modern scientific management mode, introduces process technicians who strive for excellence, equipped with advanced production equipment and strict testing methods. At the same time, the company also introduces horizontal machining centers, vertical machining centers, bidirectional CNC surface planers, CNC coordinate boring machines, CNC milling machines, numerical control planers, fully automatic CNC plasma cutting machines, dynamic balancing machines, and various high-precision fan special equipment such as lathes and presses. The process flow is strictly standardized, and the company cooperates closely with many domestic and foreign research institutions and universities to continuously absorb and improve advanced technologies at home and abroad, actively promote product upgrading and optimization, and make product quality reach advanced levels at home and abroad.

The company's main products include various centrifugal induced draft fans, stainless steel fans, CKSR series three/two blade Roots blowers, oxidation fans, vacuum pumps, industrial dust collectors, etc. Mainly used in industries such as sewage treatment, pneumatic conveying, vacuum packaging, aquaculture, cement, power plants, steel, petrochemicals, cement, mining, etc., it has the advantages of low noise, energy saving, stable quality, and long service life. The company has passed ISO9001 international quality system certification, established and improved quality assurance for design, production, manufacturing, installation, and service, and achieved independent control of the entire process from research and development design to finished product delivery, providing sufficient basis and reliable guarantee for product stability and durability.