Air Blower Damper For High Pressure Centrifugal Blower Centrifugal Fan Accessories Second Stage Impeller Wheel

Air Blower Damper For High Pressure Centrifugal Blower Centrifugal Fan Accessories Second Stage Impeller Wheel

The air blower damper of a centrifugal fan is a core device installed at the air inlet, air outlet of the centrifugal fan or key nodes of the air duct system. It precisely regulates the operating parameters of the fan, such as air volume, air pressure, and power consumption, by changing the flow area, airflow direction, or flow velocity. Its working principle is based on fluid - mechanical characteristics. Through the mechanical movement (such as rotation, sliding, opening and closing) of the regulating components, it changes the gas flow resistance, thereby achieving dynamic management of the gas flow and pressure in the system.

In terms of structural forms, there is a wide variety of air blower dampers for centrifugal fans:

- Butterfly valve - type air blower damper: With a circular or square valve plate as the core, it changes the opening degree by rotating around the axis. It features a compact structure, flexible operation, and small installation space, and is suitable for rapid flow regulation in medium - and low - pressure ventilation systems.
- Damper baffle - type air blower damper: Composed of multiple parallel baffles, it can achieve a wide - range flow regulation through the synchronous opening and closing of the linkage mechanism. It is commonly used in scenarios with high requirements for regulation accuracy, such as industrial boilers and dust - removal systems.
- Axial guide vane - type air blower damper: Installed at the air inlet of the fan, it uses guide vanes to change the angle at which the airflow enters the impeller, optimizing the aerodynamic performance of the fan and reducing energy consumption. It is especially suitable for energy - saving regulation of large - scale centrifugal fans.
- Louver - type air blower damper: Similar to a louver structure, it controls the ventilation volume through the flipping of the blades, combining the functions of regulation and dust prevention. It is often used in ventilation systems with certain requirements for environmental cleanliness.

In terms of customization, the air blower dampers of centrifugal fans can be designed specifically according to different application scenarios:

- Material selection: Carbon steel is used for normal working conditions. In the face of high - temperature, high - humidity, and corrosive gases (such as chemical waste gases and acid - alkali environments), special materials such as stainless steel, fiberglass, and high - temperature - resistant alloys can be selected to improve the durability of the equipment.
- Driving methods: There are three types: manual, electric, and pneumatic. Manual air blower dampers are suitable for occasions with stable working conditions and low regulation frequencies. Electric air blower dampers can be linked with automated control systems (such as PLC and DCS) to achieve remote and precise control. Pneumatic air blower dampers have a fast response speed and are suitable for dangerous environments such as those with flammable and explosive substances.
- Sealing structure: For scenarios where strict control of gas leakage is required (such as the transportation of toxic gases and ventilation in ultra - clean workshops), structures such as multi - layer sealing rubber strips and labyrinth - type sealing grooves can be equipped to ensure high air - tightness.
- Intelligent monitoring: Devices such as opening sensors, pressure sensors, and temperature sensors are integrated to provide real - time feedback on the operating status of the air blower damper. Through Internet of Things technology, fault early - warning and remote operation and maintenance are realized, improving the intelligent level of the system.

The air blower dampers of centrifugal fans are widely used in industrial production (such as metallurgy, power, and chemical industries), building ventilation (such as underground garages and shopping mall ventilation systems), environmental protection projects (such as waste gas treatment and dust - removal equipment), etc. They are indispensable key components to ensure the efficient operation of fans and meet the requirements of complex working conditions."

Key Features 

• Product as drawing.
• Customized
• Diameter :400-3500mm. 
• Material:Carton steel Q345, Staliness steel, Aluminium.Cast iron, bronze, stainless steel, manganese bronze, Monel, INCONEL, and non-metallic materials.Non-metallic material composition: PPS plastic, phenolic resin and so on
• Special Treatment: Wear-resisting processing, Surfacing welding processing.