The working principle and selection method of industrial centrifugal blower

- Jun 07, 2019-

When the industrial centrifugal blower rotates, the wind direction causes the gas to move forward and outward due to the centrifugal force, thereby forming a series of spiral motions. The air between the impeller blades rotates in a spiral shape and squeezes the gas outside the pump body into the side grooves; when it enters the side channels, the gas is compressed and then returned to the impeller blades to accelerate again.


As air passes through the impeller and side slots along a spiral track, each impeller blade increases the degree of compression and acceleration, and as the rotation progresses, the kinetic energy of the gas increases, causing the gas pressure passing along the side passages to increase further. When the air reaches the junction of the side channel and the discharge flange, the gas is squeezed out of the blade and discharged through the outlet muffler.


Due to the wide use of industrial centrifugal blowers, its selection is relatively complicated. In general, you first need to determine what function the industrial centrifugal blower uses, whether it is suction or blow, and find the corresponding pressure-flow curve.


Secondly, according to the calculated pressure and flow rate, find the working curve above the working point corresponding to the pressure and flow rate on the graph; then select the industrial centrifugal blower model according to the working curve; as long as it is a different working site, it is against the pressure and The demand for traffic is different, so to get relatively accurate data, you need to do the relevant calculations.