Things to Know About Lobe Blower

Things to Know About Lobe Blower

The mid-1800s saw the rise of the modern-day lobe blower because of Francis and Philander Boots. While repairing a water motor, one of the brothers accidentally spun the motor’s shaft which caused the impellers to spin and the other brother’s hat flew off! An iron foundry superintendent who was watching from afar noticed that he could use this machinery to belt iron. So the Root brothers discovered the mechanism of blowers.


Broadly speaking, there are 5 main types of blowers:


  1. Rotary lobe blower/ positive displacement
  2. Helical screw blower
  3. Centrifugal blower
  4. High-speed blower
  5. Regenerative blower


What is A Lobe Blower?


Lobe blowers are a positive displacement machine that can discharge a constant air pressure at a certain speed. You can use such blowers for pressure and vacuum applications, and there is no pressure developed inside the blowers. You can find different pressure parameters in the lobe blowers and you can use the perfect pressure according to your needs. They are completely oil-free and horsepower can be needed for discharge and suctions the air pressure according to your needs. The space between the rotors and housing stores the pumped medium. On compressing the medium in the blower stage, its next destination is the downstream discharge silencer. Motor using a v-belt is used to operate the drive unit.  Love blowers are mostly used in cement plants, pneumatic conveying systems, treatment plants for aeration, water treatment plants, powder materials blending plants and chemical industries.


Lobe Blower is Used in Various Industries Such As:


  1. Chemical, environmental service and dairy.
  2. Cement & lime, process gas and resin and plastic.
  3. Soil remediation, dry bulk hauling and bulk remediation.


Certain Applications of Lobe Blower Are:


  1. Sewer Cleaning, Automated Milking and Gas Boosting
  2. Fluidization & Conveying, Gas Boosting and Fly Ash Conveying & Aeration
  3. Aeration, Chip Conveying & Process Vacuum


Working Principle for A Lobe Blower:


On dissecting a positive displacement blower, it is noticed that the main parts of the machine consist of two rotors that are joined by gears. One the blower starts working; the rotors rotate in opposite directions to allow air inside. An external power source helps in the movement of one of the rotors, rightly named, “driving rotor”. The other rotor called the “driven rotor” moves because of the gears present inside. This air is moved towards the outlet side through the rotors and blower casing. The air is not allowed to revert back due to the lack of internal spaces in the machine.


lobe blower


Twin Lobe Blower and Tri-Lobe Blower


Twin lobe contain two figure 8 shaped rotors while tri lobe contains the same thing, just three in number shaped like a lobe propeller. Tri-lobe blower is considered superior because of low noise production. Twin lobe blower is comparatively old school in contrast to the tri-lobe.  The latter stays usable 15% longer than the former because of the bearing used. Nowadays most twin lobe blower has almost disappeared from third world countries because of its low performance a poor technology. It is suggested to take some suggestions from the dealer or manufacturer of such lobe blowers to find out the best as per your industrial needs.


Due to these constructional features, lobe blower is having the following characteristics:


  1. The operating speed determines the flow rate.
  2. The total pressure across the machine manipulates the input power.
  3. The discharge and suction pressures are determined by system conditions.
  4. The differential pressure across the machine is generally connected to the temperature rise of the discharge.


So now you can choose the lobe blowers according to your needs and you can use them for your industrial or manufacturing units.