roots blower pump

A Roots blower pump, also known as a Roots blower, is a type of positive displacement pump that utilizes rotating lobes to move a fluid. It’s essentially a rotary lobe pump, often used for moving air or gas, and sometimes for creating a vacuum.

Key features and characteristics:

Positive Displacement:

Roots blowers trap and move a fixed volume of fluid with each rotation of the lobes.
Rotating Lobes:

The pump features two or more rotating lobes that intermesh to trap and move the fluid.
No Internal Compression:

Roots blowers don’t have internal compression; they move the fluid without compressing it within the pump itself.
Applications:

They are used in various applications, including wastewater treatment (aeration), pneumatic conveying, and as vacuum pumps.
Vacuum Pumping:

When used as a vacuum pump, they create a pressure differential to evacuate air or gas.
Combination with other pumps:

Roots blowers are often combined with other vacuum pumps (like rotary vane pumps) to achieve higher vacuum levels,

How it works:

Fluid enters the pump’s intake.
Rotating lobes trap the fluid in pockets between the lobes and the casing.
The lobes carry the fluid to the outlet.
At the outlet, the fluid is discharged.

Applications:

Sewage Treatment: Roots blowers are used for aeration in sewage treatment plants, facilitating the breakdown of organic waste.
Pneumatic Conveying: They move materials through pipelines in various industrial processes.
Vacuum Systems: In vacuum applications, they help achieve lower pressure levels.
Other uses: They can also be used for filter flushing, backwashing, and gas recovery.