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Design Index and integral structure of centrifugal Fan for plastic Machinery

Wuxi JN Fan Co.,Ltd | Updated: Jul 30, 2018

The performance parameters of the plastic centrifugal fan are mainly flow, pressure, power, efficiency and speed. The size of the noise and vibration is also the main design index of the fan in the operation. Flow rate, also called air volume, is expressed by the volume of gas flowing through the fan in unit time, and the pressure is also called wind pressure. It refers to the increase of pressure in the fan, which is divided into static pressure, dynamic pressure and total pressure. The power is the input power of the fan, that is, the axial power. The ratio of fan effective power to shaft power is called efficiency. Fan full pressure efficiency can reach 90%.

There are 12 blades of the impeller of the centrifugal fan of plastic machinery. In the process of making the impeller is mainly made of polypropylene material, which is welded between the wheel cover and the disc. After forming, the impeller is adjusted by static and dynamic balance, and the operation is stable and reliable. Centrifugal fan casing is welded into cochlea shell with high quality plastic sheet, with a decontamination round hole at the bottom.

The inlet of centrifugal fan of plastic machinery converges, and the whole structure of streamline type is mainly fixed by bolts at the inlet side of the fan during operation, and the section parallel to the axial direction is a curve shape during operation. In this way, the gas can enter impeller smoothly and the loss is small. The transmission group is composed of spindle, bearing box, coupling (or belt wheel), etc. The spindle is made of superior grade anticorrosive steel (or polypropylene lining material).

The sealing group of plastic machinery centrifugal fan adopts new structure, two-way labyrinth seal, and can also be sealed by pumping oil seal or magnetic oil seal according to customer's request. Wide range of high-efficiency operating conditions, fan machine number arranged closely, easy to select high-efficiency operating point.http://www.jnblower.com/

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