The Difference Between Roots Blower and Centrifugal Fan By Xianrun Blower

The Difference Between Roots Blower and Centrifugal Fan By Xianrun Blower

6. Roots blower is suitable for constant flow condition. Because the roots blower belong to the constant flow fan, and the main parameter is air volume, output air pressure changes with pipeline and the load, so air volume change have little change. 
Roots blower is a kind of high pressure blower as well as positive displacement blower, air volume and revolutions are in proportion, and the air flow from the suction side to the discharge side.
 

Xianrun Blower Roots Blower for Water Treatment

7.Centrifugal fan is suitable for constant pressure condition. Centrifugal fan belongs to constant pressure fan, the main parameter is air pressure, the output air volume changes with pipe and load, while air pressure changes little.
The centrifugal fan air pressure is not as high as roots blower. Air compression process is worked by several impeller under centrifugal force.

Xianrun Blower Centrifugal Fan and Roots Blower Difference

8. Centrifugal fan is square torque, with roots blower basically belongs to the constant torque.
9. Roots blower have much bigger noise than centrifugal fan during the working.

High Temperature Fans for Dust Collecting

Part 1 Difference Between Centrifugal Fan with Roots Blower by Xianrun Blower

Part 1 Difference Between Centrifugal Fan with Roots Blower by Xianrun Blower

Roots blower is a kind positive displacement blower, air volume and rotation speed are in proportion, roots blower end face and front and back end cover, roots blower impeller blades are always in small distance. 

Xianrun Blower Roots Blower for Water Treatment

Under the synchromesh gear drive, the air goes along the inner shell wall from air inlet to the discharge side. Roots blowers are always used in aquaculture, waste water treatment, and increasing oxygen aeration, transporting biogas, cement conveying and so on. 

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While centrifugal fan is depending on the input mechanical energy, to improve the air pressure side by side to exhaust air out, so centrifugal fan is a kind of driven fluid machinery.

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Centrifugal fan is widely used in factories, mines, tunnels, cooling towers, vehicles, ships, these structure of ventilation, dust and cooling system; 
and the ventilation of the boilers and industrial furnaces, kilns and so on. 

Roots Blower Structure by Xianrun Blower

Roots Blower Structure by Xianrun Blower

Casing: 
Casing is mainly used to support the wallboard, impeller, mufflers and fix them.
Wallboard: 
To connect casing and impeller, and support the impeller rotation, and have end face sealing effect.
Roots Blower Impeller: 
Impeller is rotating part of the roots blower. Roots blower is divided into two lobes roots blower and three lobes roots blower. Compared with two lobes roots blower, three lobes roots blower has the features of small gas pulsation, low noise, stable running and so on, so three lobes roots blower gradually replace two blades roots blower.

Positive Displacement Roots Blower

Silencer: 
To reduce the gas pulsation noise in air inlet and outlet of roots blower. 
Safety valve: 
To restrict the roots blower booster operation. 
Back-pressure valve: 
To prevent the roots blower counter-rotating when the roots blower shutdown load. 
Pressure relief valve: 
According to different requirements, pressure relief valve is used in roots blower no-load startup. 
Sound proof enclosures: 
To satisfy and meet the required noise to the environment.

Xianrun Blower Roots Blower for Water Treatment

Roots Blower Principle, Parameters, and Application By Xianrun Blower

Roots Blower Principle, Parameters, and Application By Xianrun Blower

Roots blower is a kind positive displacement blower. Principle is two leaf shape rotors making relative motion inside air cylinder to compress and transport air, it can also be called rotary compressor.

Xianrun Blower Roots Blower for Water Treatment

Roots Blower Parameters
Air Temperature: 20~60 Celsius degree
Air Pressure:  9.8 KPA~196 KPA
Flow range:  0.15~1200 m3/h 
Speed: 150 ~3000 rpm
Power: 0.75 KW~ 1000 KW
Weight: 100 kg~ 9000 kg
Material: Cast iron

Positive Displacement Roots Blower

The roots blower has simple structure, widely used in aquaculture, sewage treatment, such as increasing oxygen aeration, transporting biogas, cement conveying, more over, it is suitable for the air transmission and pressurizing in low pressure situation, it can also be used as a vacuum pump.