What are the differences between Roots fans and high-pressure fans?


What are the differences between Roots fans and high-pressure fans?

High-voltage fans are divided into eddy current fans and Roots fans, which refer to fans with higher working pressure.

The working principle of the vortex fan, also known as the vortex air pump, is that when the impeller rotates, because of the centripetal force, 

the direction mark promotes the gas to move outward, and eventually forms a series of spiral motion. The gas between the blade heads of the

 impeller rotates in a spiral shape, and the gas outside the pump shell is squeezed into the side groove (sucked into the suction port). When it

 enters the side channel, the gas is compressed, and then returns to the impeller between the blade heads to speed up rotation again. Each impeller 

shrinks and accelerates as the air passes over the impeller and side groove along the spiral rail. As the rotation progresses, the kinetic energy of the

 gas increases, and it is squeezed against the gas along the side channel.

Working principle diagram of vortex pump

Roots fan is a volume fan, the amount of air transported is proportional to the rotation. Each time the three-blade impeller rotates, the two impellers 

suck three times and exhaust three times. Compared with the two-blade type, the gas pulse is reduced, the load transition is small, the impact 

toughness is high, the noise is low, and the vibration is small. There are two three-blade impellers on two parallel axes. A slight gap is always maintained

 between the wheels and the holes and impeller of the elliptical case. Because the impellers rotate evenly with each other, the gas surrounding the shell

 and impellers is transported from the suction side to the discharge side. Each impeller is always in the correct phase with a synchronous gear, so it does 

not need to be touched and stabilized at a great speed.

Roots blower working principle diagram

In simple terms, the vortex fan is a centripetal force to transport gas, and the Roots fan is a forced transport gas, that is, compressed air. Taking wastewater

 treatment as an example, eddy current fan is suitable for small pool oxygen production, economical; The Roots fan is used for large-scale wastewater

 treatment, and the air pressure is relatively large. In general, Roots fans are more suitable for the selection of large air pressure and large air volume,

 depending on the pressure and air volume you apply. However, if the air pressure is within 20KPa and the air volume is large, the annular fan can be selected,

 which is more suitable. In terms of equipment selection, the use of Roots fans, vortex fans can choose Green or Senz, are domestic, more durable.

Pond water quality standards have been improved compared to. The abundant water-soluble O2 in the reservoir ensures the growth of aquatic organisms 

and improves the survival rate, size and yield of aquaculture. In addition to energy saving, low noise and other highlights, "micro-pore oxygenation" also

 has energy saving, low noise and other highlights. In the case of the same power level of the main engine, the aeration capacity of the micro-hole aerator

 is three times that of the impeller aerator. This kind of oxygen augmentation technology is a new kind of oxygen augmentation technology in the self-purification

 of water in recent years: microporous aeration augmentation is the oxygen augmentation of water. Other oxygenation is surface oxygenation, and the water

 quality is mostly underwater anoxia. Sludge, manure, residue deterioration, etc., accumulated underwater. mg/L up and down.

Achieve higher volumetric power levels without deformation due to heat but with friction in the body. Roots blast production determines its mechanical 

friction loss is very small. Due to the contact between the bearing and the gear equipment, the rotor, housing and gear ring have sufficient impact toughness.

 During operation, the rotors of our Roots blower are checked for static and dynamic balance. Specific goods run smoothly and vibrate. Rotor: composed of 

shaft, impeller, bearing, synchronous gear, shaft coupling, shaft sleeve, etc. Impeller: Select involute profile, high volume application efficiency. Bearing: The

 end of the near-connected shaft is used as the positioning end, and the 3000 double row radial spherical roller bearing is selected.

There are many types of Roots blower, whether it is Roots blower model or construction type. The high pressure Roots blower has many characteristics and 

has attracted much attention in the market. So what is a high-pressure Roots blower? At present, the industry widely regards the Roots blower with a variable

 pressure value of more than 49KPa as a high pressure Roots blower, and the high pressure Roots blower is a kind of Roots blower. High pressure Roots blowers

 are generally more expensive than low pressure Roots blowers, and many people don't understand why. Today, the fan will summarize the following four points 

for you:

1. Pressure

The greater the pressure, the greater the technical performance of Roots blower. Therefore, to cope with higher pressure, higher quality blowers must be used

 to ensure blower performance, so the price will be higher.

2. Structure

For example, ordinary three-leaf roots blowers can meet the low pressure requirements, but when the pressure rises, the blower will produce more heat. In order 

to increase these heat, it is necessary to improve the Roots blower to ensure that the Roots blower components can operate normally. Therefore, the improvemen

t part also costs.

3. Features

In order to ensure normal operation under high pressure, high pressure Roots fans must perform. Therefore, because of more material costs and time costs, a 

large number of supporting technologies, the overall cost is also higher.

4. Motor

The head model is the same, the specifications are the same, in the case of different pressures, the need for more powerful motors, the greater the provisions 

of the motor, the higher the price naturally.

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