The inner frame of the mine tunnel negative pressure air duct has about ten sections per segment, preventing collapse during air suction.

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Mining negative pressure air duct frames feature sufficient rib count and high strength for long-distance ventilation. Typically, each section of a mining negative-pressure air duct frame is equipped with 10-16 evenly spaced ribs, providing strong resistance to negative pressure and ensuring the duct does not collapse under strong suction conditions.

Main Applications

1. Delivering Fresh Air

In deep mines or tunnels, natural ventilation is often insufficient. Air ducts connected to fans deliver fresh air from the surface or upwind areas directly to the working face, ensuring adequate oxygen levels for personnel.

2. Removing Harmful Gases and Dust

Mining operations produce harmful substances such as gas, carbon monoxide, and dust. Air ducts help concentrate and exhaust these pollutants, reducing the risk of poisoning and pneumoconiosis.

3. Regulating Airflow in Tunnels

By strategically arranging air ducts, airflow volume, speed, and direction can be controlled to provide suitable ventilation conditions for different working areas, improving the underground climate.

Mining Positive/Negative Pressure Air Ducts—High Airflow, Low Resistance, Quick Installation! Various diameters available, customizable lengths, suitable for all tunnel environments. Safe production starts with quality air ducts.