roots rotary lobe blower

A Roots rotary lobe blower, also known as a Roots blower or a rotary lobe pump, is a type of positive displacement machine that transfers gas by trapping it between rotating lobes (impellers) and the casing. These blowers are often used in applications requiring relatively constant airflow at varying discharge pressures.

Here’s a more detailed explanation:

Positive Displacement:

Roots blowers operate on the principle of positive displacement, meaning they trap a fixed volume of gas and move it from the inlet to the outlet with each rotation of the lobes.
Rotating Lobes:

The blower uses two rotating lobes, often resembling a figure-8 shape, that mesh together without touching.
Gas Transfer:

As the lobes rotate, they trap pockets of gas between the lobes and the casing, carrying the gas from the inlet to the outlet.
Applications:
Roots blowers are used in various industries for tasks such as:

Pneumatic conveying

Wastewater treatment

Chemical processing

Boosting gas pressure

Creating vacuum