Structure:

Impeller: Involute linear surface is selected, with high volume utilization.

Synchronous gear: it is composed of gear ring and hub, which is convenient to adjust the impeller clearance.

Base: medium and small fans are equipped with public base, and large fans are only equipped with fan base for installation and commissioning.

Body: it is composed of casing and left and right wall panels. The left and right wall panels and the bearing seat and sealing part installed in the left and right wall panels can be common to each other.

Bearing: 3000 type double row centripetal spherical roller bearing is selected as the positioning end near the coupling end. 32000 single row centripetal short cylindrical roller bearing is selected as the free end at the near gear end to adapt to the axial displacement of the rotor during thermal heave.

Lubrication: the gear adopts immersion type and the bearing adopts splash lubrication. Good lubrication effect, safe and reliable.

Transmission mode: mainly direct coupling. If the performance specification requires, the V-belt pulley speed change mode can also be selected. Elastic coupling is selected as the coupling, which can mitigate the impact and compensate a small amount of axis deviation. In addition to the motor as the driving machine, the large flow fan can also use steam turbine or other driving machines.