Introduction to Roots Steam Fan
Roots steam fan, as a special type of Roots fan, is mainly used for steam transportation or gas compression and transportation in related processes. The following is a detailed introduction to Roots steam fan:
1、 Definition and Working Principle
Roots steam fan is a type of positive displacement fan that compresses and delivers gas through relative motion between two blade rotors (usually three bladed impellers) in a cylinder. When the motor drives one of the impellers to rotate, the other impeller will rotate synchronously at the same speed and in the opposite direction through the action of the synchronous gear. During the rotation of the impeller, a vacuum is formed at the inlet due to the gaps between the impellers, the impeller and the casing, and the impeller and the wall panel. Steam (or other gases) is sucked into the inlet chamber under atmospheric pressure. As the impeller continues to rotate, steam is continuously carried to the exhaust chamber and finally discharged.
2、 Structure and Characteristics
1. Structure: Roots steam fan is mainly composed of casing, impeller, driving shaft, driven shaft, gear, bearing, oil seal and other components. The casing is usually made of cast iron or steel plate, with sufficient strength and rigidity; The impeller is a key component of the fan, made of aluminum alloy or cast iron, with two or three blades; The driving shaft and the driven shaft are respectively connected to the driving impeller and the driven impeller, and are supported in the casing through bearings; Gears are used to connect the driving shaft and the driven shaft, ensuring that the two impellers can rotate synchronously and in reverse.
2. Characteristics:
① Strong steam transport capability: able to transport steam stably.
② Compact structure: Reasonable design, small footprint.
③ Smooth operation: low vibration and noise, suitable for various working environments.
④ Strong adaptability: can be used in harsh working conditions such as high temperature and high pressure.
3、 Application Fields
Roots steam fans are widely used in the following fields:
1. Steam system: used for the transportation, compression, and pressurization of steam.
2. Chemical industry: In chemical production, gases used to transport steam or participate in related chemical reactions.
3. Electric power industry: used for ventilation, combustion control, and other processes in boiler production.
4. Other fields: steam conveying and pressurization systems in industries such as pharmaceuticals and food processing.
4、 Usage and maintenance
1. Precautions for use:
① Before use, check whether all components of the fan are intact and whether the fasteners are loose.
② Ensure that the fan operates under rated conditions and avoid overloading.
③ Regularly check the quality and quantity of lubricating oil, and replace or replenish it in a timely manner.
2. Maintenance and upkeep:
① Regularly clean and inspect the fan to ensure the cleanliness and integrity of all components.
② Regularly inspect and maintain vulnerable parts such as bearings and gears, and promptly replace severely worn components.
③ Pay attention to the operating sound and vibration of the fan, and stop the machine for inspection in a timely manner if there are any abnormalities.
In summary, Roots steam fans play an important role in steam conveying and pressurization systems due to their stable, compact structure and wide adaptability. During use and maintenance, the operating procedures should be strictly followed to ensure the normal operation and long-term service life of the fan.
