roots blower pump

A Roots blower pump, also known as a Roots-type supercharger, is a positive displacement pump that moves fluids by trapping and carrying them between rotating lobes (or impellers). These lobes don’t touch each other or the casing, minimizing wear and creating a continuous flow of air or gas. They are commonly used in applications requiring a constant, reliable supply of air or gas at moderate pressures.

Here’s a more detailed explanation:

How it works:

Positive Displacement:
Roots blowers operate on the principle of positive displacement, meaning they trap a fixed volume of fluid and move it from the inlet to the outlet.
Rotating Lobes:
The core of the pump consists of two or more rotating lobes (often called rotors or impellers) that mesh together but don’t touch.
Fluid Trapping:
As the lobes rotate, they trap fluid (gas or air) between the lobes and the casing.
Fluid Transfer:
The rotating lobes carry the trapped fluid around the casing to the outlet port, where it is discharged.
Continuous Flow:
This process results in a continuous flow of fluid, making it suitable for applications needing a consistent supply.

Key Features:

No Contact:
The non-contacting lobes minimize wear and friction, allowing for high speeds and efficiency.
Moderate Compression:
Roots blowers are generally used for moderate pressure applications, often in conjunction with other pumps for higher compression stages.
Clean Operation:
Since they don’t rely on oil lubrication on the pumping surfaces, they are suitable for applications where contamination control is important.
Versatile Applications:
They are used in various industrial and automotive applications, including pneumatic conveying, combustion processes, and supercharging engines.

Applications:

Industrial Processes:
Roots blowers are widely used in industrial settings for pneumatic conveying, aeration, and other processes requiring a constant flow of air or gas.
Combustion Engines:
In vehicles, they are used as superchargers to increase engine power by forcing more air into the cylinders.
Vacuum Systems:
They can also be used as vacuum pumps in conjunction with other pumps to achieve higher vacuum levels.