Key Features:
1. To meet the resistance requirements of coal mine ventilation networks and ensure fan efficiency, this model utilizes an opposite-rotating structure. The two impellers rotate in opposite directions, eliminating the need for a middle guide vane and reducing its losses, thereby enhancing the fan's efficiency.
2. The motor is directly coupled to the impeller, which avoids damage to the transmission system and eliminates energy loss from the transmission, thereby enhancing the efficiency of the fan unit.
3. Motors are all installed in an enclosed housing within the main wind tunnel of the fan, which is pressure-resistant to isolate the motor from the gas-containing air in the fan's air passage. It also serves as a heat dissipation device. The housing features two rows of aerodynamic air ducts that connect to the atmosphere at ground level via the main wind tunnel, allowing fresh air to enter the housing while maintaining a positive pressure inside during fan operation.
4. The fan unit static pressure efficiency can reach over 86%, with a wide efficient range, ensuring the main fan efficiency in the three mining stages of the mine is above 75%. This reverses the low operation efficiency of large-scale mine main fans in our country, and can save a significant amount of electricity.
5. The fan can be reversed for reverse airflow, with a reverse airflow capacity of up to 60% of the normal airflow. No additional reverse airflow channel is required, offering the advantages of cost-saving in infrastructure investment and rapid reverse airflow speed.
6. The blade installation angle of the impeller is adjustable, allowing for the adjustment of blade angles according to production requirements. This fan features a special design with a performance curve free of humps, ensuring stable operation under any network resistance.
7. This series of fans operates stably with minimal vibration, and both the fan and diffuser can be mounted on a flatbed truck with wheels for easy mobility. They are designed for long-term continuous operation.
