4-70 type centrifugal fan

The air outlet positions of 4-70 centrifugal fans No. 2.8-6 are 0 ° -225 °, with an interval of 45 °, and the transmission mode is A-type transmission; The air outlet positions of No. 7-12 are 0 °, 90 °, and 180 °, and the transmission mode of No. 7-12 is C-type transmission.
The 4-70 type centrifugal fans No. 2.8-6 are mainly composed of impellers, casings, air inlets, and other parts matched with direct connected motors; In addition to the above-mentioned parts, there are also transmission parts such as No. 7-12.
1) The impeller consists of 10 backward inclined circular thin plate blades, a curved front plate, and a flat rear plate. All are made of steel plates and have undergone dynamic and static balance correction, with good air performance, high efficiency, and smooth operation.
2) The air inlet is made as a whole and installed on the surface of the fan. The cross-section parallel to the axial direction has a curved shape, which allows gas to enter the impeller smoothly with minimal loss.
3) The transmission part consists of a main shaft, bearing housing, rolling bearings, and pulleys.