For some, understanding PD blowers is a mystery. The good news is that these units aren’t as mysterious as you think. Basically, positive displacement blowers are a type of air pump that operates by displacing a fixed volume of air per revolution.
In this article, we will explore how positive displacement blowers work and some of the benefits they offer. We will also take a look at some of the different types of positive displacement blowers on the market today.
What Is a Positive Displacement Blower?
A positive displacement blower often referred to as a PD blower, is a type of air pump that uses a fixed volume of air per revolution to move gases or liquids.
The term “positive displacement” refers to the fact that the air is forced into and out of the device in a fixed amount.
This sets apart positive displacement blowers from other types of pumps, such as centrifugal pumps. This can vary the volume of fluid they discharge depending on how fast they spin.
What Are the Different Types of PD Blowers?
There are two main types of positive displacement blowers. These are rotary screw blowers and lobe-type positive displacement (PD) blowers.
Rotary screw PD blowers work by rotating a pair of interlocked screws on an axis to move the air or liquid through them.
This type of positive displacement pump is often used in industrial settings. They’re used where large amounts of air need to be moved quickly and efficiently at low-pressure levels.
Lobe positive displacement pumps use three rotating discs that rotate around one another to create suction. This is while simultaneously moving the liquid they contain from point A to point B.
How Do Positive Displacement Blowers Work?
Positive displacement blowers work by displacing a fixed volume of gas or liquid with each revolution of the impeller.
This means that the volumetric flow rate (the amount of fluid or gas passing through a given area in a certain amount of time) is constant. This is regardless of the pressure or heat loss in the system.
This makes positive displacement blowers ideal for applications where precise control of flow rate is essential. They are also very efficient when it comes to moving thick fluids and slurries.
What Are the Benefits of PD Blowers?
In addition to having a constant volumetric flow rate, positive displacement blowers also offer other benefits. One of the most significant advantages is that PD blowers can be used for both positive and negative pressure applications.
This means they can be used in systems where air needs to move from one area into another without any loss of force or energy transfer between areas.
Another benefit is their efficiency when it comes to moving thick fluids or slurries through pipes at high rates of speed, according to https://cbeuptime.com/products/blowers/positive-displacement-blowers/.
Learn More About Positive Displacement Blower Applications
As you can see, learning how positive displacement blowers work isn’t difficult. These blowers can be used in several different applications, usually in industrial settings.
Do you want to learn more about how different products work? If so, check out our blog!
