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The purpose and structure of the centrifugal ventilation fans Aug 18, 2018

Centrifugal ventilation fans are often used for ventilation and ventilation of factories and large buildings. They can transport air or other gases that are not self-igniting, non-explosive, non-volatile, harmless to the human body, non-corrosive to steel, and must not contain viscous substances in the body. The dust and hard particles are not more than 150mg/m3, and the gas temperature must not exceed 80 degrees.

 

The centrifugal ventilation fan is mainly composed of an impeller, a casing, an air inlet, an air outlet and a transmission part. The blade of the impeller and the wheel cover are lined with a wear-resistant guard plate, and the blade head adopts a solid body, and the wear-resistant material is welded in the wearable portion to improve the service life of the blade. Moreover, the impeller is static and dynamic balance corrected and overspeed running experiments, so the operation is stable and reliable.

 

In addition, the outer casing of the centrifugal ventilation fans are generally welded by steel plates. The air inlet is usually a convergent, streamlined monolithic structure that is bolted to the inlet side of the casing. The transmission part is mainly composed of a main shaft, a bearing housing, a coupling and the like. The main shaft is made of high-quality steel and is fitted with a rolling bearing and a water-cooled integral bearing housing.

 

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