Type 4-72 fan, 2 8#-6#It is mainly composed of impellers, casings, inlet air and other parts matched with direct connected motors. eight#-20#In addition to the above-mentioned parts, there are also transmission parts, etc.
(1) The impeller consists of 10 aft inclined blade types, a curved front plate, and a flat rear plate. Made of copper plate or cast aluminum alloy, and calibrated for dynamic and static balance, it has good air performance, high efficiency, and smooth operation.
(2) The casing is made in two different types. two point eight#-12#The casing is made as a whole and cannot be disassembled#-20#The casing is made into a three open design, divided into two halves along the horizontal plane of the center, and the upper half is further divided into two halves vertically along the centerline, connected by screws.
(3) The air inlet is made as a whole and installed on the side of the fan. The cross-section parallel to the axial direction is curved, which allows gas to enter the impeller smoothly with minimal loss.
(4) The transmission part consists of a main shaft, bearing housing, rolling bearings, pulleys or couplings.

Product Features

Fan structure: The fan is mainly composed of a casing, impeller, transmission, collector, pedestal, etc.

1Impeller

The blade and wheel cover molds are pressed and formed, precisely positioned, and continuously welded. After the impeller is formed, it undergoes static and dynamic balance correction, with a balance level of ≤4.0Grade (national standard), with good aerodynamics, high efficiency, low noise, and stable performance. At high speeds, reinforcing ribs are added to increase rigidity.

2, chassis

The casing is made of high-quality steel plate continuously welded snail shell, which has high structural strength, good air tightness, and avoids leakage; The surface of the product is treated with spraying or baking paint, resulting in a beautiful appearance.1400~2000When the fan is special, it can be made into an upper and lower Haff structure along the split surface, which is easy to assemble and disassemble.

3Fan collector

Convergent streamlined air collector, molded by grinding tools, with good rectification effect, high efficiency, low noise, and integrated with the imported ring, convenient for users to connect pipelines.

4Transmission group

Integrated cast iron parts with precise bearing coaxiality, small volume, low oil consumption, good stability, and easy maintenance. The spindle adopts45#Made of high-quality carbon steel precision machining, it has sufficient safety and fatigue resistance in design. The triangular pulleys are all made of high-quality cast iron cone sleeve pulleys, which are convenient for maintenance and upkeep.

5, pedestal

Steel integrated base with high structural strength, equipped with spring shock absorbers for seismic isolation design, beautiful appearance, and high stability.

6Performance

Wide efficient zone to avoid performance degradation caused by sliding of the working point; High reliability design, safe and stable, long service life.