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What is Brushless EC centrifugal blower fan?

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What is Brushless EC centrifugal blower fan?

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  • Time of issue:2021-01-29
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(Summary description)Brushless EC centrifugal blower fan is a kind of driven fluid machinery, which depends on the input mechanical energy to increase the gas pressure and discharge gas.

What is Brushless EC centrifugal blower fan?

(Summary description)Brushless EC centrifugal blower fan is a kind of driven fluid machinery, which depends on the input mechanical energy to increase the gas pressure and discharge gas.

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2021-01-29
  • Views:0
Information

Brushless EC centrifugal blower fan is a kind of driven fluid machinery, which depends on the input mechanical energy to increase the gas pressure and discharge gas.

Brushless EC central blower fan is based on the principle of converting kinetic energy into potential energy. It uses the high-speed rotating impeller to accelerate the gas, then decelerate and change the flow direction, so as to convert kinetic energy into potential energy (pressure). In the single-stage centrifugal fan, the gas enters the impeller from the axial direction, changes into the radial direction when it flows through the impeller, and then enters the diffuser. In the diffuser, the gas changes the flow direction and causes deceleration, which converts kinetic energy into pressure energy. The pressure increase mainly occurs in the impeller, followed by the diffusion process. In a multistage centrifugal fan, a reflux device is used to make the air flow into the next impeller to produce higher pressure.

Brushless EC centrifugal blower fan is a kind of cupola widely used in the domestic foundry industry, which adopts the latest design and conforms to the "three modernizations" standard. Its main structural features are two rows of tuyeres, large row spacing, two independent combustion zones formed by bottom coke combustion, and iron content increased by lengthening the superheated zone

The results show that the temperature of hot metal is high and the quality of hot metal is good. According to the supply air temperature, it can be divided into two structures: cold air and hot air in the furnace. The hot air type of furnace liner uses the heat exchanger with dense ribs to heat the physical heat in the furnace gas into the cold air of the furnace. The hot air temperature is about 180-250 ℃. It has the characteristics of not occupying the production area of the workshop, compact structure, convenient operation and small thermal inertia.

Brushless EC central blower fan features:

1. Compact structure: beautiful appearance, good stability, easy installation and maintenance.

2. Stable operation: the optimized impeller reduces the axial force to the minimum, and has an efficient impeller. After static and dynamic balance correction, the whole machine runs smoothly. Without any damping device, the bearing amplitude is less than or equal to 0.04mm.

3. Low noise: when the blower is running, there is no mechanical friction, and reasonable blade shape line is adopted to minimize the noise. The noise produced by brushless EC central blower fan is high frequency noise. As long as there are obstacles, it can be soundproof, so there is almost no noise outside the fan room.

4. Oil free machinery: the blower bearing is lubricated with grease, and the bearing life is more than three years. The fan does not produce oil and gas in operation. The fan with special requirements uses molybdenum disulfide lithium grease to lubricate the bearing.

5. Impeller: the impeller adopts special compound line shape to reduce internal leakage and improve volumetric efficiency.

6. Easy to adjust: the inlet butterfly valve regulates the flow and the outlet butterfly valve regulates the pressure.

7. Driving mode: two pole asynchronous motor or four pole motor is usually used. Different voltage motors can be used according to different user power grids.

8. Seal: labyrinth seals are installed at both ends of each stage impeller, stage and casing except the inlet ring to prevent gas leakage.

9. Cooling: the exhaust bearing block has two structures: air cooling and water cooling. Due to the progressive compression of the impeller to the gas, the temperature of the exhaust housing is much higher than that of the intake housing. Air cooling or water cooling device is installed in the exhaust bearing seat to prolong the service life of the bearing.

10. Bearing temperature control alarm: the fan accessories are equipped with temperature control box, which is connected to the bearing through PT100 resistance. When the bearing temperature exceeds the set temperature, the temperature control box will automatically alarm.

11. Transmission mode: coupling transmission, belt transmission and gearbox transmission. According to different equipment and technology, different transmission modes are selected.

Brushless EC centrifugal blower fan is widely used in urban sewage, industrial wastewater and other water treatment engineering, as well as metallurgy, chemical industry, aquaculture, pneumatic conveying, mine flotation and other industries and departments to transport air or other non-toxic and non corrosive gases. It can also be used for ventilation and induced draft of boilers and industrial furnaces, cooling and ventilation of air conditioning equipment and household electrical equipment, drying and selection of grain, wind source of wind tunnel, inflation and propulsion of hovercraft, etc.

 

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