Centrifugal ventilation fan

PP/FRP seriesCentrifugal ventilation fanIt has the characteristics of chemical corrosion resistance, resistance to aging, low specific gravity, low noise, and smooth operation. Widely used in environments containing high-pressure corrosive gases, such as fiberglass processing, rare earth extraction, chemical and pharmaceutical industries, sewage deodorization, anaerobic papermaking, acid recycling, etc.
1. The pressure can reach 7000Pa, with a wide range of applications and suitable for various working conditions; Efficient and energy-saving (power-saving), creating profits for you and saving costs.
2. The casing, inlet bell, and impeller of this series of fiberglass high-pressure fans are all made of pure fiberglass, which changes the traditional production process of carbon steel lined fiberglass.
3. The connection bolts between the casing and the iron frame are treated with integral forming and wrapping, which solves the problem of bolt damage caused by corrosion.
4. The fan adopts a double-layer base, which does not require the removal of anchor bolts, making it easy to maintain the fan.

Centrifugal ventilation fanCentrifugal fan is a mechanical device that relies on input mechanical energy to increase gas pressure and discharge gas. It is a passive fluid machinery. Centrifugal fans are widely used for ventilation, dust removal, and cooling in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings; Ventilation and induced draft for boilers and industrial furnaces; Cooling and ventilation in air conditioning equipment and household appliances; Drying and selection of grains; Wind tunnel wind source and inflation and propulsion of hovercraft.

Centrifugal fan is based on the principle of converting kinetic energy into potential energy, using a high-speed rotating impeller to accelerate gas, then decelerate and change the flow direction, converting kinetic energy into potential energy (pressure). In a single-stage centrifugal fan, gas enters the impeller from the axial direction, changes to the radial direction as it flows through the impeller, and then enters the diffuser. In the diffuser, the gas changes its flow direction and the cross-sectional area of the pipeline increases, which slows down the airflow. This deceleration effect converts kinetic energy into pressure energy. The increase in pressure mainly occurs in the impeller, followed by the expansion process. In multi-stage centrifugal fans, a reflux device is used to direct the airflow into the next impeller, generating higher pressure.

construction

A centrifugal fan consists of a casing, a main shaft, an impeller, a bearing transmission mechanism, and a motor.

Chassis: Made of steel plate, it is sturdy and reliable, and can be divided into integral and semi open types. The semi open type is easy to maintain.

Impeller: composed of blades, curved front plate, and flat rear plate.

Rotor: It should undergo static and dynamic balancing to ensure smooth rotation and good performance.

Transmission part: It consists of a main shaft, bearing housing, rolling bearings, and pulleys (or couplings).