The explosion-proof centrifugal fan with impeller is a type of explosion-proof centrifugal fan. Its impeller adopts a special explosion-proof design, which can effectively prevent sparks during operation, thereby avoiding hazardous incidents such as explosions.


Below is a detailed introduction to the explosion-proof centrifugal fan with impeller:

Working Principle

The working principle of the explosion-proof centrifugal fan with impeller is similar to that of a standard centrifugal fan. When the motor drives the impeller to rotate, the air inside the impeller is subjected to centrifugal force and is thrown toward the edge of the impeller, creating a negative pressure at the center. External air is drawn into the center of the impeller due to atmospheric pressure, gains energy as it rotates with the impeller, and is then discharged.

Explosion-Proof Design of the Impeller

- Material Selection: Typically made of non-ferrous materials, such as aluminum impellers.

- Structural Design: Utilizes backward-curved impellers, featuring a compact structure, high air volume, high static pressure, low vibration, low noise, and easy installation. Additionally, the manufacturing process of the impeller is crucial, ensuring a smooth surface free of burrs to minimize friction and static electricity generation.

- Gap Design: The gap between the impeller and the air inlet must be strictly controlled to prevent friction and spark generation. Generally, the gap between the impeller and the air inlet should be no less than 2mm.

Application Areas

- Petrochemical Industry: Used for conveying flammable and explosive gases, such as hydrogen, acetylene, and ethylene.

- Coal Mining Industry: Used for ventilation and gas emission in coal mines.

- Metallurgical Industry: Used for ventilation and exhaust in metallurgical furnaces.

- Power Industry: Used for boiler ventilation and induced draft in thermal power plants.

- Other Industries: Also applicable in ventilation and air conditioning systems for industries such as food, pharmaceuticals, and electronics.