Roots blower: what is Roots blower
2020-11-23
Summary
Roots blowers are one of the more popular operating ventilators. The original two-leaf Roots blower has been replaced by the current three-leaf, low-noise, environmentally friendly three-leaf blower. Traditional air-cooled, single-tank Roots blowers have gradually developed low-noise, double-tank, water-cooled, oil-cooled Roots blowers and other new products on the market. What issues should be paid attention to in the initial stage of buying a Roots blower, let us take a look:
Roots blowers are one of the more popular operating ventilators. The original two-leaf Roots blower has been replaced by the current three-leaf, low-noise, environmentally friendly three-leaf blower. Traditional air-cooled, single-tank Roots blowers have gradually developed low-noise, double-tank, water-cooled, oil-cooled Roots blowers and other new products on the market. What issues should be paid attention to in the initial stage of buying a Roots blower, let us take a look:
Let's take a look at the Roots blower: its structure is so simple, it consists of a shell, a wall plate and two three-bladed wheels. Through the action of a pair of synchronous gears, the two impellers rotate in opposite directions and at the same speed, and rely on the tiny gap between the impeller and the impeller to basically isolate the suction cavity and the exhaust cavity, and the impeller rotates to push the casing The volume of gas achieves the purpose of blowing.
Roots blower adopts frequency conversion control, which can accurately control the air volume. Compared with valve control, it is more intuitive and convenient to adjust the air volume of the fan to meet production needs. Due to the use of frequency conversion technology, the motor realizes soft start without the influence of starting current. When the inverter is not used, the motor will start directly, and the starting current is as high as 200 --- 300A, which will adversely affect the motor or the power grid. Now, using the soft start of the inverter, the starting current is not higher than the rated current 46A, which can reduce the impact of the fan outlet pressure on the fan due to the instantaneous increase of the fan outlet pressure, thereby extending the service life of the fan. Blowers and other equipment; because the fan speed is reduced to 60% of the original, the vibration frequency of the fan pipe is greatly reduced, the original basic noise of the fan is reduced, and the mechanical life of the fan, motor and bearing can be extended, and equipment maintenance can be reduced.
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