The reasonable selection of multi-stage blowers is crucial in many industrial fields, as it relates to various factors such as production efficiency and energy consumption. Below is a detailed introduction to the key parameters that need to be considered when selecting a multi-stage blower.

Firstly, there is the flow rate, which refers to the volume of gas passing through the fan per unit time. It is necessary to comprehensively consider the process requirements for gas transportation, pipeline systems, and equipment for gas generation or use. For example, in sewage treatment, the flow rate of aerobic tanks should be determined based on factors such as water volume and COD concentration.

Next is pressure, also known as head. It is affected by factors such as differences in conveying height, pipeline resistance, and internal resistance of equipment. In wastewater treatment, there is a certain resistance in the aeration head. When selecting, it is necessary to ensure that the fan pressure is higher than the sum of all resistances, otherwise problems such as surge may occur.

The number of impeller stages is equally crucial. The more levels there are, the higher the wind pressure is usually, but not necessarily the better. It is necessary to choose the appropriate number of stages based on the actual required pressure, in order to avoid increasing costs and potentially reducing efficiency due to too many stages.

The diameter of the impeller affects the ventilation capacity. A larger diameter can usually transport more gas, but it also needs to be considered in conjunction with other factors, such as selecting an impeller with a suitable diameter in a limited space.

The rotational speed affects the performance and efficiency of the fan. When the speed is appropriate, the air volume and pressure can achieve a good match, and the energy consumption is low.

In addition, the material and material of the fan should also be considered. Choosing materials that are corrosion-resistant and wear-resistant can extend the service life of the fan and reduce costs.

In special working conditions, there are also some special requirements, such as in environments with high dust content, the selection of two-stage series fans can be considered; In environments with high humidity, dual parallel fans should be selected.

In short, the selection of multi-stage blowers should comprehensively consider parameters such as flow rate, pressure, impeller stage, impeller diameter, and speed, and choose the appropriate fan type and specifications based on actual working conditions to ensure efficient operation of the equipment and meet production and usage needs.