The adjustable blade long shaft fan is a kind of high-efficiency and safe mine ventilation fan specially designed for the actual needs large mines. It adopts an external motor structure for easy maintenance and is a large and medium-sized main ventilator. This series of fans has a reasonable structure, *** adjustable system and excellent aerodynamic performance. It runs smoothly, has low noise and a wide range of adjustment. It is an ideal ventilation equipment for coal mines, metal mines and other mines It is especially suitable for mines with large air volume and comprehensive mining machinery as the main equipment. The adjustable blade long shaft fan has the following structural characteristics: 1. fan is mainly composed of a collector, a main body, a diffuser, a transmission shaft, a motor and other parts. It is generally installed indoors, and there is lifting indoors, which is convenient for installation and maintenance. Each part is fixed on a cement foundation separately with soft connection, which reduces the transmission of vibration. 2. The fan is by a single motor. The motor is installed outside the fan through a long shaft. This installation method is particularly suitable for large mines with large differences in power between the early and stages. The fan design is not limited by the size of the motor. Different motors can be used as required, saving energy and facilitating replacement. 3. The FGACZ adjustable blade long shaft fan is selected according to the mine working condition parameters. It can be equipped with a single impeller or a double impeller. Guide blades are installed in front and behind the impeller, which improves the efficiency of the fan. 4. The fan is equipped with an electric braking device, which is easy to operate and convenient for rapid ventilation. The reverse ventilation volume can reach more than 60% of the normal ventilation volume. 5. The fan is equipped with a refueling device and a d device without stopping the machine, which can add lubricating oil during operation. 6. Thermometers and vibration elements are embedded in the bearing housing of the fan and the bearing the motor between the stator winding, which can display the temperature and vibration data of each part of the fan during operation. 7. The blade material is forged aluminum alloy, is precisely machined by a multi-axis linkage CNC machining center, eliminating the errors from design to processing. The consistency of the profile of the blades on the same is good, which greatly improves the aerodynamic performance of the fan.