4-72 Series Backward Inclined Single Inlet Centrifugal Fan
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4-72 Series Backward Inclined Single Inlet Centrifugal Fan

The 4-72 series backward inclined single inlet centrifugal fan is a high-efficiency, low-noise fan developed based on advanced foreign technology. It features a compact structure and convenient installation and maintenance. This fan is widely used for ventilation and air exchange in environmental protection equipment, dust removal systems, coating equipment, chemical facilities, and industrial workshops.
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Product Description

Technical Specifications

Airflow Range: 990-226,500 m³/h

otal Pressure Range: 180-3,350 Pa

Motor Power: Varies by model

Speed: 960-2,900 r/min

Inlet Temperature: ≤80°C

Materials: Carbon steel, stainless steel, or alloy steel

Drive Methods: Direct coupling, belt drive, bearing housing

Installation Method: Base-mounted

Impeller Type: Backward inclined single inlet

Transmission Types: Available in A, C, D, and E configurations


Applications

  • Environmental Protection: Suitable for dust removal and gas extraction in various industries.

  • Ventilation: Ideal for air circulation in factories, buildings, and other facilities.

  • Industrial Furnaces: Used for air supply and exhaust in industrial furnace applications.

  • Chemical Industry: Suitable for ventilation and gas handling in chemical processes.

  • Other: Also used in coating equipment, metallurgical plants, and petrochemical facilities.


Features

  • Efficiency: High efficiency due to backward inclined blades.

  • Low Noise: Designed for quiet operation.

  • Durability: Robust construction for long service life.

  • Customization: Available in various sizes and materials to meet specific needs.


Product Structure

  • Impeller: Made of high-quality carbon steel with backward inclined blades, ensuring high efficiency and low noise. Each impeller undergoes rigorous static and dynamic balancing.

  • Casing: Constructed from steel plates, with a durable finish to prevent rust and corrosion.

  • Inlet Collector: Designed for smooth air intake with minimal resistance.

  • Transmission Components: Include shafts, bearings, and pulleys or couplings, depending on the transmission type.


Operating Conditions

Suitable for gases that are non-flammable, non-explosive, and non-corrosive to steel.

Maximum operating temperature: 80°C.

Gas should contain no more than 150 mg/m³ of dust or hard particles.


Certifications

  • Meets standards for general-purpose centrifugal fans (JB/T 10563-2006).

  • Fire-resistant models comply with GA 211-2009 for fire smoke exhaust applications.

  • Explosion-proof models are certified to EXd II BT4 standards.


Customization Options

Corrosion-resistant Models: Available in fiberglass or stainless steel for corrosive gas environments.

Explosion-proof Models: Equipped with explosion-proof motors for hazardous environments.

Special Sizes: Custom dimensions and larger models can be manufactured upon request.


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