What is a Roots blower and what is its purpose

Roots blower, also known as Roots blower, is a type of positive displacement blower that uses two or three blade rotors to compress and transport gas through relative motion within a cylinder. The following is a detailed introduction to Roots blower:
1、 Definition and principle of Roots blower
1. Definition: The Roots blower was invented by the American Roots brothers, hence its name. It is a positive displacement fan that compresses and delivers gas through the engagement of a pair of rotors (with gaps between the rotors but not in contact with each other).
2. Principle: The two rotors of the Roots blower move relative to each other inside the cylinder, and a small gap is always maintained between the rotor end face and the front and rear end covers of the blower, as well as between the blower rotors. Under the drive of the synchronous gear, wind is transported from the inlet of the fan along the inner wall of the casing to the side where it is discharged. Due to the small gap between the rotor and the casing, there is almost no internal leakage of gas during the compression process, thus achieving gas delivery.
2、 The purpose of Roots blower
Roots blowers have multiple uses and are widely used in various industrial fields. The following are its main uses:
1. Air purification: Roots blowers can be used for exhaust gas treatment and purification equipment, such as dust removal and exhaust gas treatment in chemical processes. By generating airflow, the gas inhaled by the exhaust gas treatment equipment is sent to the purification equipment for treatment, and the purified gas is then discharged.
2. Wastewater treatment: In the wastewater treatment process, Roots blowers serve as aeration devices to transfer oxygen to the wastewater in aeration tanks or activated sludge process processors, promoting microbial growth and dissolved oxygen concentration in the wastewater, thereby accelerating its degradation.
3. Material transportation and processing: The airflow generated by Roots blowers can be used in processes such as material transportation, mixing, or drying to improve production efficiency and ensure product quality. In industries such as food and chemical, Roots blowers are also commonly used for mixing, conveying, or unloading tasks.
4. Combustion equipment air supply: In combustion equipment, Roots blower can be used for air supply to ensure the smooth progress of the combustion process.
5. Ventilation and exhaust emissions: Roots blowers can also be used for ventilation and exhaust emissions to ensure air quality in the working environment.
In addition, Roots blowers can also be used for powder conveying, combustion assistance and pressurization, electroplating aeration, high-pressure air knives, desulfurization and oxidation, vacuum suction, and aquaculture.
In summary, Roots blowers play an important role in industrial production due to their simple structure, reliable operation, low airflow pulsation, and oil-free lubrication.