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 from the outlet. Unlike common centrifugal fans, the working principle of Roots blower is based on volume change rather than kinetic energy conversion, thus it has unique advantages under specific operating conditions.
Why do we need to know the form of Roots blower? **
Many users tend to confuse Roots blowers and centrifugal blowers when selecting, resulting in problems such as insufficient air volume, high energy consumption, or equipment mismatch in practical applications. For example, if a sewage treatment plant chooses a centrifugal fan incorrectly, it may not be able to effectively aerate due to insufficient pressure; The high-pressure characteristics of Roots blower can precisely solve this pain point.
2 * * Core features of Roots blower**
-Volumetric principle: By rotating the rotor, a closed chamber is formed to transport gas, with stable flow rate that is not affected by pressure changes.
-* * No internal compression * *: The gas is not actively compressed inside the casing and relies on the resistance of the rear pipeline to form pressure, so a pressure relief valve protection device is required.
-* * Simple structure * *: Only composed of rotor, casing, and gears, with low maintenance costs, but high noise (requires installation of muffler).
3 * * Typical application scenarios**
-Environmental protection industry: sewage aeration and pneumatic conveying rely on their constant flow characteristics.
-Industrial field: Vacuum packaging, material conveying, utilizing its high-pressure capability.
-Aquaculture: There is a high demand for oxygenation, and the Roots blower can operate stably for a long time.
4 * * Selection and Avoiding Pit Guide**
-Pain point: Users often overlook the "no internal compression" feature, resulting in overpressure damage.
-Solution: Calculate the actual working pressure and install a valve.
-Pain point: Noise issues affect the factory environment.
-* * Solution * *: Choose a model with a soundproof cover or separately configure a muffler.
5 * * Maintenance Tips**
-Regularly check the gear oil (replace it every 3 months).
-Clean the intake filter (once a month) to avoid impurities from damaging the rotor.
Although the Roots blower is not, it performs excellently in scenarios of medium and low pressure that require stable flow. Understanding its form and principles is the key to realizing its value!
