Introduction to the working principle, characteristics, and advantages of a two-stage Roots blower
Double stage Roots blower is an important industrial ventilation equipment, and the following is a detailed introduction to it:
1、 Definition and Working Principle
1. Definition: A two-stage Roots blower is a device composed of two series of standard Roots blowers connected in series.
2. Working principle: When the gas enters the stage fan, it will be pressurized and the gas temperature will be reduced to below 40 ℃ through the intercooler. Then, the gas enters the second stage fan to continue boosting, and the unit's boosting can reach 177kPa. This dual stage design enables the fan to generate high pressure, making it suitable for situations that require large gas flow rates and high pressure.
2、 Structural characteristics
1. Rotor structure: Each fan case has two three bladed rotors with opposite directions inside, and each three bladed rotor is supported by two bearings. Using a pair of high-precision synchronous spur gears to maintain the relative position of the two rotors constant.
2. Gap design: The gap maintained between rotors and between rotors and the casing, this non-contact rotation design reduces friction and wear, and improves the service life of the fan.
3. Transmission method: The main unit of the two-stage fan is driven by the same motor through a belt or a dual axis extension motor, ensuring the stable operation of the fan.
3、 Performance characteristics
1. Energy saving: The two-stage Roots blower has a high volumetric utilization rate and volumetric efficiency, which can effectively transport gas and reduce energy consumption.
2. Stable and reliable: Due to the use of a three bladed rotor structure and a reasonable structure at the inlet and outlet of the casing, the fan has low vibration and noise, and operates stably and reliably.
3. Strong adaptability: The two-stage Roots blower can adapt to different gas media and working conditions, and is widely used in fields such as pharmaceuticals, chemicals, grain processing, and environmental protection.
4. Easy maintenance: The fan structure is simple and compact, with flexible and versatile installation methods, making it easy to use and maintain.
4、 Application scope
Double stage Roots blowers are widely used for ventilation and air exchange in industrial production lines, mines, tunnels, underground garages, and other places, as well as in fields such as air purification, transportation systems, and sewage treatment. Its stable performance and operation provide important support for industrial production.
5、 Precautions
1. Gap adjustment: Double stage Roots blowers require high internal clearances. During maintenance and daily upkeep, it is necessary to accurately adjust and check the clearances to avoid friction between the rotor and the wall panel, which may cause damage to the blower.
2. Temperature control: During use, pay attention to controlling the temperature of the fan to avoid excessive temperature affecting its performance and lifespan.
3. Regular maintenance: Regularly maintain and inspect the fan, including cleaning, lubricating, and replacing worn parts, to ensure the normal operation of the fan.
In summary, the two-stage Roots blower is a stable and reliable industrial ventilation equipment with broad application prospects and development potential.
