The dynamic balance of impeller dynamic balance impeller directly affects the quality and life of the fan

The development of key components of the fan (impeller production), the blade processing impeller is the heart of the fan, and the blade is the key part in the impeller. Its shape and size directly affect the aerodynamic performance of the fan, so how to deal with the blade design And processing is a critical issue. In order to ensure the good aerodynamic performance of the fan, CAD is used to optimize the design, and the field test is carried out by making the physical object to achieve the best design data. In order to ensure the blade profile, the die and the die are designed and fabricated, formed on the die, the profile is good, the quality is high, and it is suitable for small batch and mass production.

The installation angle of the blade welding blade directly affects the aerodynamic performance parameters such as wind pressure and air volume of the fan, so whether the blade installation angle can be guaranteed is also a key issue. In order to ensure the angle of blade installation, a special turning table for blade welding has been made (this turntable has been used and verified, and the precision meets the welding requirements of the fan). The blade is welded on the turntable to ensure the blade pitch and the verticality of the blade and the wheel. Guarantee the quality of the impeller.

The dynamic balance of the impeller dynamic balance impeller directly affects the quality and life of the fan. If the impeller dynamic balance is not good, it will produce strong vibration, which not only affects the service life of the fan, but also brings many unsafe factors, and the vibration will generate noise and harm. The environment and the physical and mental health of the human body. In order to ensure the balance quality of the impeller, the accuracy of the dynamic balance of the impeller is ensured by two dynamic balance corrections on the dynamic balancing machine according to the requirements of 5 and 6 precision. Compared with ordinary axial fans, this series of fans has the characteristics of high pressure, high efficiency, wide efficiency range and flat performance curve. In order to ensure that the fan meets the requirements of GBSOO45-95 "Fire Protection Code for High-rise Civil Building Design", the hot state test must be carried out. The thermal test of the fan is to connect the air duct with a forging furnace, the air duct is connected to the fan, and the wind turbine is connected to the motor. The thermocouple is used to measure the temperature. When the fan is started, the furnace is continuously heated, so that the temperature of the fan is continuously increased. When the fan temperature reaches 30 °C, the timer starts. The fan runs continuously at 300 °C to 330 °C. Minutes, there is no abnormality, meeting the requirements of fire protection and smoke exhaustion in high-rise buildings.