There are a variety of fans on the market, negative pressure fans, axial fans, centrifugal fans, Roots fans, etc., which kind of environment are they suitable for or which kind of fans are needed in which environment? And all kinds of negative pressure fans , Explosion-proof negative pressure fans, anti-corrosion negative pressure fans, stainless steel negative pressure fans, etc., what kind of environment are they suitable for? Today we take a look.

The clever way to choose negative pressure fan in different environments

1. There is no special requirement for the fan during ordinary exhaust, as long as it meets the design conditions and customer requirements, as is the case with ordinary civil ventilators. However, the speed of the fan is generally selected to be lower, because the speed is too high, and the overall operating noise is large. At the same time, the fan and its components are easily damaged, such as bearings and shafts, belts and pulleys wear in advance, resulting in frequent replacement of components Maintenance costs. At this time, the basic type of negative pressure fan can achieve the effect of exhaust.

2. There are many types of process exhaust air, and some may contain welding slag, paint, explosive gas, sometimes high temperature, smoke exhaust, etc. Different components and different treatment methods require different fans.

3. Welding slag is included in the gas: a filter screen is added, and the motor cannot be built in; the exhaust air in the welding workshop or the blanking workshop usually considers the metal shavings and welding slag contained in the exhaust gas. If these impurities enter the fan, they may scratch the worn bearing belts and other parts, and more seriously damage the motor, causing the motor to be scrapped. All requirements are to add an initial effect filter (to filter particles with a diameter not greater than 1 mm), and the motor is external (to prevent metal chips from entering the motor).