Application and advantages of Roots blower: in-depth analysis of this equipment
Roots blower is a common mechanical equipment, also known as centrifugal fan or blower. The following is a detailed introduction to Roots blower:
1、 Definition and Types
Roots blower belongs to the positive displacement rotary blower, which compresses and delivers gas through the engagement of a pair of rotors. According to the number of impeller heads, Roots blowers can be divided into two blade Roots blowers and three blade Roots blowers. Compared with the two blade Roots blower, the three blade Roots blower has the advantages of smaller air pulsation, lower noise, and smoother operation, thus gradually occupying the mainstream of the market.
2、 Working principle
The working principle of Roots blower is to use two or three blade shaped rotors to compress and transport gas through relative motion inside the cylinder. The rotor is driven by a pair of synchronous gears and moves in the opposite direction, pushing the inhaled gas from the intake port to the exhaust port without internal compression. Specifically, when two three bladed impellers rotate relative to each other in the space sealed by the casing and wall panel, a vacuum state is formed at the inlet due to the gaps between the impellers, between the impellers and the casing, and between the impellers and the wall panel. Air enters the intake chamber under atmospheric pressure and is continuously carried to the exhaust chamber by the sealed chamber formed by two blades. The impellers inside the exhaust chamber mesh with each other, squeezing out the air between the two blades to complete the transportation of gas.
3、 Structural composition
The Roots blower is mainly composed of a casing, impeller, motor, transmission device, wall panel, oil tank, and muffler. Among them, the impeller is the core component of the Roots blower, which generates airflow through rotation to achieve the transportation and discharge of air. The motor provides power to drive the rotation of the impeller. The transmission device plays a role in connecting and transmitting power. The casing mainly plays a supporting and fixing role. Wall panels are used to connect the casing and impeller, support the rotation of the impeller, and also serve as end face seals. The oil tank is used to store lubricating oil for lubricating gears and bearings. Silencers are used to reduce the noise generated by airflow pulsation when the Roots blower enters and exits.
4、 Characteristics and advantages
1. Roots blower has the characteristic of forced gas transmission. When the pressure is adjusted within the allowable range, the flow rate changes very little and the pressure selection range is wide.
2. When conveying media, it does not contain oil and is suitable for situations where high purity of the medium is required.
3. Simple structure, easy manufacturing, convenient maintenance, and long service life.
4. Low vibration, low noise, smooth and reliable operation.
5. High volume utilization rate, high volume efficiency, compact structure, and flexible installation methods.
5、 Application Fields
Roots blowers are widely used in industrial and civilian fields, such as aquaculture oxygenation, sewage treatment aeration, cement transportation, etc. In addition, it is widely used in industries such as petrochemicals, building materials, electricity, smelting, and fertilizers. Roots blower is also suitable for gas delivery and pressurization systems in low-pressure environments, and can also be used as a vacuum pump, etc.
In summary, Roots blower is a powerful and widely used centrifugal fan. By understanding its working principle, structural composition, characteristics and advantages, as well as application fields, one can better understand and apply this device.
