FBCZ series mine use axial flow extraction type main ventilator (original BK series) is a large- mine explosion-proof axial flow fan successfully developed by combining the ventilation network parameters of our country's coal mines. It has the advantages of high efficiency, energy saving and low. The product device static pressure efficiency is more than 86%, which has reached the *** level of our country's mine main fan. The materials used by the fan passed the friction spark test by the inspection center of the China Coal Science and Technology Institute Chongqing Branch, and have reached the explosion-proof requirements. The explosion-proof of the whole machine has passed the explosion-proof inspection by the National Explosion-proof Electrical Product Quality Inspection Center. Main features of the mine use axial flow extraction main ventilator: 1. In order to meet the resistance requirements of the mine ventilation network and ensure the efficiency of the ventilator, this machine adopts a corotary structure, with two machines with opposite rotation of the impellers, which can eliminate the guide vane in the middle and reduce the loss of the guide vane, and the efficiency of the fan. 2. The type of motor and impeller direct drive is adopted, which avoids the damage accident of the transmission device, and also eliminates the loss of the transmission device, and improves the efficiency of the fan device. 3. The motor is all installed in a closed cover inside the main wind cylinder of the fan and the closed cover has a certain pressure resistance, which can make the motor and the gas containing gas in the wind channel of the fan isolated, and also plays a certain role in dissipation. The closed cover is provided with two rows of streamlined wind pipes, which are connected with the main wind cylinder and the ground atmosphere, so that fresh air can flow into closed cover, and at the same time, the air in the cover can be kept in a positive pressure state during the operation of the fan. 4. The static pressure of the fan device can reach more than 86%, the high efficiency area is wide, and the main fan efficiency can be ensured to be more than 75% in three stages of mining. It has reversed the situation of low operation efficiency of large mine main fan in our country, and can save a lot of electric energy. 5. The fan can be reversed to reverse the wind, and its reverse wind volume can reach 60% of the positive wind volume, without having to set up another reverse wind channel which has the advantages of saving the basic construction investment and the speed of reverse wind. 6. The installation angle of the impeller blades is adjustable, and the blade angle be adjusted according to the production requirements. This fan adopts a special design, and the performance curve has no camel peak, and it can operate stably under any network resistance. 7. The series of fans operate stably, with small machine vibration, and the fan and diffuser can be installed on a flat car with wheels, which can run continuously a long time. Send your message