What type of fan is a Roots blower
As a widely used equipment in the industrial field, the type and characteristics of Roots blower are of great significance for users to choose suitable equipment. Understanding the types and working principles of Roots blowers can help to better apply and maintain this equipment.
1. Basic concept of Roots blower
Roots blower is a type of positive displacement fan that rotates inside the casing through two interlocked rotors, sucking in gas from the inlet and compressing it before discharging it. Due to its simple structure and stable operation, Roots blowers have been widely used in fields such as sewage treatment, pneumatic conveying, and aquaculture.
2. Types of Roots blowers
Roots blowers can be classified into the following types according to different classification criteria:
2.1 Classification by Structure
Roots blowers can be divided into double blade Roots blowers and three blade Roots blowers according to their structure. The rotor of a double blade Roots blower has two blades, with a simple structure and is suitable for low-pressure applications; The rotor of a three blade Roots blower has three blades, which run smoothly and are suitable for high-pressure applications.
2.2 Classification by driving mode
Roots blowers can be divided into direct coupled Roots blowers and belt type Roots blowers according to their driving methods. The motor of the direct coupled Roots blower is directly connected to the fan, with a compact structure and suitable for low-power applications; The belt type Roots blower is driven by a belt and is suitable for high-power applications.
2.3 Classification by purpose
Roots blowers can be divided into ordinary Roots blowers and special Roots blowers according to their purposes. Ordinary Roots blowers are suitable for general industrial applications; Special Roots blowers are suitable for special occasions, such as corrosion resistance, high temperature resistance, etc.
3. Working principle of Roots blower
The working principle of Roots blower is based on volumetric compression, which rotates inside the casing through two interlocked rotors, sucking in gas from the inlet and compressing it before discharging it. The specific work process is as follows:
3.1 Inhalation process
When the rotor rotates, the gas at the inlet is sucked into the space between the rotor and the casing, and as the rotor rotates, the gas is gradually compressed.
3.2 Compression process
As the rotor continues to rotate, the gas is compressed and the pressure gradually increases. When the gas is compressed to a certain degree, the exhaust port opens and the gas is discharged.
3.3 Exhaust process
The compressed gas is discharged through the exhaust port and enters the pipeline or equipment to complete the entire working process.
4. Application of Roots blower
Roots blowers have a wide range of applications in various fields, mainly including the following aspects:
4.1 Sewage treatment
In the sewage treatment process, Roots blowers are used in aeration tanks to provide oxygen to promote the growth of microorganisms and the decomposition of organic matter.
4.2 Pneumatic conveying
Roots blower is used in pneumatic conveying systems to transport powdered or granular materials through pipelines to designated locations.
4.3 Aquaculture
In aquaculture, Roots blowers are used for oxygenation, increasing the oxygen content in water and promoting the growth of aquatic animals.
4.4 Chemical production
In chemical production, Roots blowers are used to operate equipment such as reaction vessels and dryers, providing high-pressure gas.
5. Conclusion
Roots blower is a type of positive displacement blower that can be classified into various types based on its structure, driving method, and purpose. Its working principle is based on volumetric compression, which sucks in, compresses, and discharges gas through the rotation of the rotor. Roots blowers have a wide range of applications in fields such as sewage treatment, pneumatic conveying, aquaculture, and chemical production. Understanding the types and working principles of Roots blowers can help to better apply and maintain this equipment.
