What does Roots blower boost mean? Many friends who are new to industrial equipment may be a bit confused about this concept. Don't worry, let's talk about it in the most down-to-earth way possible!
**Let's talk about the pain points first**
Have you encountered these situations before?
-Although the fan is running, the air pressure at the end of the pipeline cannot increase, resulting in low equipment efficiency
-I have a headache when I hear 'boost', and I am worried that improper operation may damage the fan
-Struggling during selection: How much pressure is needed to be sufficient?
In fact, the boost of Roots blower is simply its ability to "hold its breath" - by rotating and squeezing air through two internal impellers, the outlet pressure is increased to a higher level than the inlet. Let's break it down and explain it clearly
**What is the essence of boosting? **
Just like using a pump to inflate a bicycle, the lower the pressure, the greater the resistance. The same applies to Roots blowers:
-The enclosed space between the impellers continues to shrink → the air is forcibly compressed
-The greater the resistance of the outlet pipeline (such as closing the valve), the higher the pressure that the fan "holds"
But be careful! This is not true compression (constant volume), but rather the back pressure generated by blocking the airflow
**Why is the ability to boost voltage important? **
**Matching of working conditions: Sewage treatment aeration requires 0.5 bar, while pneumatic conveying may require 0.8 bar. Choosing the wrong pressure can lead to:
→ Insufficient pressure: The airflow cannot reach the end point (such as insufficient pressure in a water pipe to travel far)
→ High pressure: motor overload, accelerated bearing wear
**How to control the boost in practice? **
**Valve regulation method * * (most commonly used)
-Slowly close the outlet valve → Pipeline resistance ↑ → Pressure gauge reading ↑
-Just like pinching a water pipe, the water pressure will suddenly increase
**Speed adjustment * * (applicable to variable frequency fans)
-Increasing the speed can increase the airflow, but the pressure increase is limited
-Usually used in conjunction with valves
**Key Reminder**
-Do not exceed the "rated boost" indicated on the nameplate! Otherwise, it will:
① Motor burnout (overload alarm)
② Impeller collision (gap is forcefully widened)
-Long term high-pressure operation requires the installation of:
Overload protection for pressure gauge of pressure relief valve
Next time you encounter pressure issues, why not first check if the pipeline is blocked? Is the valve opening appropriate? Just like a doctor measuring blood pressure, finding the "cause" first is the key to prescribing the right medicine!
