dresser roots blower

A Roots blower, like the Dresser Roots blower, is a type of positive displacement rotary blower that uses two rotating lobes (or impellers) to move air or gas. It functions by trapping a volume of air between the lobes and the casing, and then pushing it out the discharge port. These blowers are often used in applications requiring a large volume of air at relatively low pressures, such as in wastewater treatment, pneumatic conveying, and as a component in some engine superchargers.

Here’s a more detailed explanation:

Positive Displacement:

Roots blowers are positive displacement machines, meaning they deliver a fixed volume of air for each rotation of the impellers.
Impellers:

The two impellers, shaped like figure-8s or lobes, rotate in opposite directions within a housing.
No Internal Compression:

Unlike some other types of blowers, Roots blowers don’t have internal compression. The pressure is built up in the discharge line due to the resistance of the system.
Applications:
They are commonly used in:

Wastewater Treatment: For aeration and mixing of wastewater.

Pneumatic Conveying: For transporting materials like grains, powders, and other bulk materials.

Engine Supercharging: In some automotive applications to increase engine power.

Vacuum Pumps: In some cases, they can be used as vacuum pumps.
Dresser Roots:

Dresser Roots is a brand known for manufacturing a variety of industrial blowers, including Roots blowers.
Installation Flexibility:

Dresser Roots URAI blowers, for example, are designed with adaptable mounting feet for both vertical and horizontal installations.