Description
The Y4-73-14 (single-blade) series fan is an improved product based on its prototype by changing original airfoil type blades to single-plate blades and adding strong medium plates between the front plate and the rear plate. The strong medium plate is welded by 12 steel plates in sequence between two adjacent blades. The wearable part of the working face of blades is surfaced with FNM-2 hard facing electrodes, which ensure fans’ high efficiency, low noise and high strength, high wearing resistance, prolonging the service life of the fan by more than 3 times.
Except for impellers, all the other dimensions and installation dimensions of Y4-73-14 series fans are identical with those of Y4-73-11 series fans, ensuring that the original matching motor can still be used after replacing the original airfoil-shaped impellers.
Y4-73-14 (single-plate blade) Wear-Resistant Centrifugal Induced Draft Fan for Boilers is particularly suitable for occasions such as induced drafting in boilers at power stations, dust removal in iron and steel plants, air inducing in latter parts of cement kiln, and sand transportation.
Key Advantages
- For impellers, Y10-21, Y8-24 blower series use same parts (made of Q345(16Mn)) for impellers except for vanes. Y8-24 fan has 16 long front-curved vanes while Y10-21 and Y10-24 fans have 24 front curved vanes, namely, 12 long and 12 short vanes. All these vanes are welded between arc front discs and plate-shape backward plates and go through static and dynamic balancing correction, so they enjoy high strength and stable operation.
- Air inlet- With convergent design, the air inlet is fixed to the inlet side of blower casing with screws.
- As a part of the induced draft fan, the air damper is used to adjust the capacity of blower. Blower with fan No. 5 has disc vanes while blowers with No. 6.3-9 has petal vanes. Air dampers are radially installed before the air inlet. The adjusting range is from 0° (fully open) to 90° (fully closed). Looking from the side of the air inlet, the handle of the air damper is on the right side. For right rotation blowers, the handle moves from fully closed to fully open by moving from bottom to top. For left rotation blowers, the handle moves from fully closed to fully open by moving from top to bottom. Air damper has to be lubricated carefully to ensure its normal operation. The blower applies temperature-resistant (260℃) molybdenum disulfide lubrication grease for lubrication to ensure good lubrication under high temperature operation.
- Driving system -It is composed of main shaft, bearing box, belt pulley, and coupling, etc. The main shaft is made of quality steel and applies rolling bearing, water-cooling integrated-design bearing box. Therefore, a water pipe has to be added and the water consumption varies with ambient temperature and is usually considered as 0.5-1m3/h. Equipped with thermometer and oil level indicator, the bearing box uses L-AN46 (Lubricating Oils for Total Loss Systems L-AN). The oil amount to be added shall be based on the oil level indicator.
Specification
| Item name | Y4-73-14 Centrifugal Fan and Induced Draft Fan for Boilers | ||
| Parts details | Impeller diameter | 800~3000 | mm |
| Speed of main shaft | 480~1450 | r/min | |
| Pressure range | 281~5007 | Pa | |
| Flow range | 12974~787966 | m3/h | |
| Structure | Blade structure | Backward | |
| Impeller support | Double support / Single support | ||
| Drivetrain | D/F | Assignable | |
| Lubrication | Oil bath lubrication / Grease oil | Assignable | |
| Bearing cooling | Circulation water cooling / Air cooling | ||
| Circulation oil cooling | |||
| System configuration | Motor | Anhui Wannan, Lu’an Jianghuai, Henan Yutong, Jiamusi, Nanyang Explosion Proof, Siemens | |
| Impeller, air inlet, blower casing, air damper | Carbon steel | Customizable | |
| Main shaft | High strength carbon structure | ||
| Bearing | FAG, SKF, ZWZ, C&U，YLC… | ||
| Bearing box | Casting iron | ||
| Drivetrain | Coupling/belt pulley | Assignable | |
| Foundation bolt | Carbon steel | ||
| Optional parts | System base frame, Protective screening, Silencer, Inlet& outlet pipeline compensator, Inlet& outlet flange, Air damper, Electric actuator, Shock isolator, Diaphragm coupling, Fluid coupling, Motor rain cover, Temperature sensor, Vibrating sensor, Soft starter, Variable-frequency drive, Special motor, System monitoring &control instrument, Lubrication system and High-level oil tank. | ||
Application
They are applicable to normal temperature and hot gas, clean and dusty gas, powder materials and tiny granules. They can apply into boilers, dust removal, de-nitration and desulfurization, cement, metallurgy, power generation, gas and material handling, smoke exhausting. It can also be customized according to special industries.
