FBD flameproof pressure-Axial one local fan, purpose and scope FBD flameproof push Axial local fan is mainly used for mine and other industrial sectors conveying gas, coal dust and flammable gases place. For coal, metal mining, chemical and other mine mine mine excavation, construction of wells, local exhaust ventilation, and air and other long distance tunnel. Second, the structure 1. FBD-type fan by collectors, a fan, two fans, explosion-proof motor, muffler and other parts. 2. FBD body and structural parts are made of welded steel forms, motor and impeller Direct mode, the transmission reliable, compact, durable, safe, and easy maintenance. 3. Motors YBF2 series flameproof three asynchronous motor. 4. Outsourcing double silencer, low noise. Third, the principle FBD type fan motor work composed by two, two relative rotation of the impeller. Directly into the air from the collector into the secondary impeller stage impeller gain energy, after pressurization sent. In addition to increasing the role of the secondary impeller flow of energy, but also other types of axial flow both in the static vane ventilation functions in the guide to get the whole straight circumferential direction velocity component at the same time, the impact of air that straightened out, increasing the airflow energy, but also reduces noise. Fourth, the main features 1. High efficiency: FBD type fan design, advanced technology, its blades using ternary fluid design, the wing was twisted. Fans efficient large area of ??working conditions, the fan is always running efficiently within the scope of work. 2. Low noise: FBD type rotating fan with direct drive, compared with the old fans, reducing the guide vane device. Fan pressure increase at the same time, they straighten out the direction of air flow, reducing air friction sound. Chassis outsourcing double silencer, machine operating noise can be controlled below 85 db (A sound level over 35 decibels), with ultra-low noise characteristics, constraints on change of underground space noise effect is significant: 3. More gentle pressure, slight surge phenomenon. At high pressure, low flow area is also stable. Underground air distance, adaptability to complex roadway. 4. In order to improve the body's blade and corrosion resistance to abrasion, thermal spray technology companies have applied to the fan manufacturing. According to the well containing corrosive elements, formulated more than 20 different types of materials, the use of supersonic arc spraying and HVOF, chassis and blades for thermal spraying treatment. Leaves can not rust, wear resistance, corrosion resistance, long life characteristics. Five, before installation specifications and technical parameters: 1. Check the motor stator windings cold insulation resistance must be greater than 50 megohms. 2. Check the ancillary electrical equipment, voltage, capacity meets the requirements, the protection is good. 3, the motor should identify the correct wiring, the wiring should be strong, and well insulated parts. Electrical parts to prevent water spray to prevent motor phase and overload operation. 4. Check the fan connecting parts loose, barrel distortion is damaged during shipping. Installation: 1, due to slight vibration fan, so FBD type fan can be placed directly at the level of the flat ground can be. 2. After installation, commissioning observe, FBD type were to start a secondary test steering, when the wind and rotate in the same direction as shown signs, start and then start the secondary level, the normal operation of the test run. Observe whether there is a collision sound, current overload or excessive vibration and other irregularities, until well after the operation, can be put into use.