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Help CenterSingle-stage Mine Explosion-proof Main Fan, Axial-flow Exhaust-type Main Ventilator for Mines
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The FBDCZ series (formerly the BDK62 series) fans are large-scale explosion-proof axial flow fans for coal mines, which are successfully developed in combination with the ventilation network parameters of Chinese coal mines. They have the advantages of high efficiency, energy saving and low noise. The static pressure efficiency of the product device is over 86%, reaching the leading level of China's main mine fans. The materials used in this fan have passed the friction spark test of the Testing Center of the Chongqing Branch of the China Coal Science Academy and meet the explosion-proof requirements. The explosion-proof performance of the whole machine has passed the explosion-proof inspection of the National Quality Testing Center for Explosion-proof Electrical Appliances. Main features: 1. In order to meet the resistance requirements of the coal mine ventilation network and ensure the efficiency of the fan, the fan adopts a counter-rotating structure. The two impellers rotate in opposite directions, which can eliminate the middle guide vanes and reduce the losses of the middle guide vanes, thus improving the fan efficiency. 2. The direct connection type of the motor and the impeller is adopted, which avoids the damage accident of the transmission device and eliminates the energy loss of the transmission device, thus improving the efficiency of the fan device. 3. The motors are all installed in the sealed covers inside the main air duct of the fan. The sealed covers have a certain pressure resistance, which can isolate the motors from the gas containing gas in the fan flow passage. At the same time, they also play a certain role in heat dissipation. The sealed covers are equipped with two rows of streamlined air ducts, which are connected to the ground atmosphere through the main air duct, allowing fresh air to flow into the sealed covers. At the same time, the air inside the covers can maintain a positive pressure state during the operation of the fan.
4. The static pressure efficiency of the fan device can reach over 86%, and the high-efficiency area is wide, which can ensure that the efficiency of the main fan in the mine is over 75% in the three mining stages. It has reversed the situation of low operating efficiency of the main fans in large mines in China and can save a large amount of electric energy. 5. The fan can reverse and reverse the air flow, and the reverse air volume can reach 60% of the forward air volume. There is no need to set up a separate reverse air duct, which has the advantages of saving capital construction investment and fast air reversal speed. 6. The installation angle of the impeller blades can be adjusted, and the blade angle can be adjusted according to the production requirements. The fan is specially designed, and its performance curve has no hump. It can operate stably under any network resistance. 7. The fans in this series operate stably with small vibration. Both the fan and the diffuser can be installed on the flatbed trucks with wheels and can operate continuously for a long time.
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