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Centrifugal fan conveying medium type and air inlet switch volume adjustment

2021-04-27 16:35

During the use of centrifugal fan equipment, the type must be selected in combination with the actual conveying medium. Generally speaking, ordinary centrifugal fan equipment is mainly used for conveying air and other gases that are not spontaneously combustible, harmless to the human body, and non-corrosive to steel.


Moreover, in order to ensure the normal operation of the centrifugal fan equipment, it is necessary to ensure that the gas in the working environment does not contain viscous substances, and the dust and hard particles do not exceed 150mg/m3. The gas temperature is kept within 80°C. And if the temperature of the conveying medium is too high, exceeding 80 degrees, then you need to choose high-temperature fan equipment.


And if you want to transport some flammable, explosive, volatile gas and other media, you need to choose explosion-proof centrifugal fan equipment.


In addition, there is a kind of anti-corrosion centrifugal fan, which can be used to transport corrosive gases such as acid and alkali. Usually, the appropriate protection method is selected according to the nature of the medium, such as galvanized sheet, corrosion-resistant paint, glass steel, stainless steel or titanium.


Friends who have used centrifugal fan equipment should know that during its operation, the switch volume of the air inlet is mainly realized through the air inlet damper. Under normal circumstances, the air inlet damper can be manually or electrically controlled to control the air volume of the air inlet. The size of the air intake will directly determine the load of the fan equipment, and also the load of the motor equipped with the fan.


Of course, for different types of centrifugal fan equipment, when it is under a heavy load, the motor current is not consistent. For example, when the high-pressure centrifugal fan is under heavy load, the motor current is higher than the rated current. In general, the switch volume of the air inlet of the fan equipment is directly proportional to the load.


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