How to improve the wear resistance of centrifugal fan impeller?
1、Improve blade structure
The blade working surface processing into serrated, change hollow blade for solid blade, blade welding anti-wear block and other methods, these can reduce the impeller wear to a certain extent.
2, the blade surface treatment
Can be carried out on the centrifugal fan blade surface treatment, generally have blade overlay welding, add wear-resistant lining plate, ceramic patch, etc., the advantage of these methods is to increase the blade surface hardness, so as to improve the blade wear resistance to a certain extent. Surface pile is the choice of surfacing welding rod (or welding wire), manual arc (or automatic welding) pile welding in the blade easy to wear parts, to improve the blade surface quality, to protect the blade and improve the blade life. Also can be in the blade working surface and the wheel surface with wear-resistant lining plate, the blade to implement the overall wear protection. Or use ceramic patch to enhance wear resistance, but the installation of ceramic patch is very inconvenient, take the bonding way to fix the ceramic lining is not solid, in the fan high-speed rotation process, ceramic lining is easy to fall off the failure, fall off the ceramic patch will also cause damage to the fan blade.
3, improve the pneumatic design
Reasonable choice of centrifugal fan inlet shape, design should ensure that the impeller small inlet relative speed, try to reduce the number of revolutions of the ventilator, choose the appropriate impeller runner shape, so that the blade to the exit of the radius of curvature of the arc from small gradually large, so as to reduce the impact of solid particles and blade opportunities.
Fan as a common factory equipment, for friends working in the factory will not feel unfamiliar, in fact, the fan because of the frequent and continuous work, so it is easy to have some damage, usually for the fan must do a good job related to maintenance work to
Low noise centrifugal fan selection needs to pay attention to which points? As the fan get the wrong model specifications will jeopardize the normal application. The key performance parameters of the fan are output power, air volume and working pressure.
Before installation, all parts of the fan should be thoroughly checked. Whether the machine is complete, whether the direction of rotation of the impeller and the casing is consistent, whether the connection of each ministry is tight, whether there is damage to the impeller, spindle, bearings and other major parts, whether the transmission group is flexible and so on. If problems are found, they should be repaired and adjusted immediately.