High temperature and corrosion-resistant stainless steel high-pressure fan

The stainless steel high-pressure fan is a newly developed and certified energy-saving fan by our factory. It has the characteristics of low noise, flat performance curve, and large flow regulation range. It is suitable for transporting non corrosive, non self igniting, high-temperature gases with a temperature not exceeding 300 ℃, and a medium dust content of less than 150mg/m3. Stainless steel fans are mainly composed of impellers, casings, air inlets, regulating doors, and transmission parts.

1. Impeller -12 angled angled blades are welded between the conical front plate and the flat rear plate. Due to the use of wing shaped blades, the main efficiency and low noise of the fan have been improved. The impeller has undergone static and dynamic balance correction and overspeed operation test, so it runs smoothly. The impellers of ventilation fans and induced draft fans with the same machine number have the same structure but different materials. Generally, A3 is selected for ventilation fans and 16Mn is selected for induced draft fans.

2. Shell - welded into a snail shape with ordinary steel plates. The casing of the single suction fan is made in three different forms (the casing of No. 8-12 is made as a whole structure and cannot be disassembled, the casing of No. 14-16 is made as a two open type, and the casing of No. 18-29.5 is made as a three open type). The volute plate of the induced draft fan has been appropriately thickened to prevent wear and tear.

3. Air inlet - The convergent and streamlined air inlet is made into a whole structure and fixed to the inlet side of the fan with bolts.

4. Regulating door - a device used to regulate flow, installed axially before the air inlet. The adjustment range is from 0 degrees (fully open) to 90 degrees (fully closed). Position of the handle for adjusting the door: viewed from the air inlet direction on the right side, for the right cyclone machine, pushing the handle from bottom to top is in the fully closed to fully open direction, and for the left cyclone machine, pulling the handle from top to bottom is in the fully closed to fully open direction.

5. Transmission - The main shaft of the transmission part is made of steel, and the high-pressure fan adopts rolling bearings. There are two forms of bearing boxes: Type 8-16 uses integral cylindrical bearing boxes; Use two independent pillow type bearing housings for No. 18-29.5. The bearing box is equipped with a thermometer and an oil level indicator (only for the induced draft fan). Lubricating oil adopts No.30 mechanical oil, and the amount of oil added shall be in accordance with the oil level indication requirements. If dry oil is used for the integral cylindrical bearing box of No. 8-16, an oil baffle should be added on one side of the ball in the bearing box, and its fixing groove should be made. The induced draft fan is equipped with a water cooling device, therefore, a water supply pipe must be added, and the water consumption varies with the temperature, generally considered at 0.5-1m3/h.