FBCDZ Series (formerly BDK62 Series)

Product Introduction: The FBCDZ series (formerly BDK62 series) axial flow fans are large-scale mine explosion-proof fans developed based on the ventilation network parameters of China's coal mines. They feature high efficiency, energy saving, and low noise. The static pressure efficiency of the product installation exceeds 86%, reaching the stable level of main fans used in Chinese mines. The materials used in this fan have passed the friction spark test at the Chongqing Branch of the China Coal Research Academy's Testing Center and meet the explosion-proof requirements. The overall explosion-proof performance of the fan has passed the explosion-proof inspection of the National Explosion-Proof Electrical Appliance Product Quality Testing Center.
Key Features:
1. To meet the resistance requirements of coal mine ventilation networks and ensure fan efficiency, this model features a counter-rotating structure. The two impellers rotate in opposite directions, allowing for the elimination of the middle guide vanes and reducing their losses, thereby enhancing the fan's efficiency.
2. The motor is directly coupled to the impeller, which prevents damage to the transmission system and eliminates energy loss from the transmission, thereby enhancing the efficiency of the fan unit.
3. The motors are all installed in an enclosed case within the main air duct of the fan, which has a certain pressure resistance. This design isolates the motor from the gas-containing air within the fan's flow channel and also serves as a heat dissipation mechanism. The case features two rows of aerodynamic air ducts, connecting the main air duct to the ground atmosphere. This allows fresh air to enter the enclosed case while also maintaining a positive pressure inside the case during the fan's operation.
4. The blower unit's static pressure efficiency can reach over 86%, with a broad high-efficiency range, ensuring the main fan efficiency in the three mining stages of the mine is above 75%. This has reversed the low operating efficiency of large-scale Chinese mines' main fans, saving a significant amount of electrical energy.
5. The fan can reverse for reverse airflow, with a reverse airflow capacity of up to 60% of the normal airflow, eliminating the need for an additional reverse airflow channel. This feature offers advantages of saving on infrastructure investment and fast reverse airflow speed.
6. The blade installation angle of the impeller is adjustable, allowing for adjustment of the blade angle 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. The series of fans operates stably with minimal vibration, and both the fans and diffusers can be mounted on wheel-based flatbed trucks for long-term continuous operation.