Roots blower has a lot of medium, today we have a detailed understanding. Are in what industry choose what kind of transmission media, let’s learn about it together!
Roots blower is a gas conveying equipment. As a gas conveying equipment, the main medium is air. Strictly speaking, it is clean air. Why do you say that?
Roots blower internal structure gap is small, can not accommodate large particles of material, the gap between impeller and impeller, will limit the cleanliness of the conveying medium.
Secondly, if there are a lot of impurities, the internal wear will occur, resulting in the decrease of efficiency, the heat increase caused by impeller wear, and the gap will become larger. For example, the temperature will affect the bearing temperature of the fan, causing bearing damage, and the high temperature will also affect the oil quality of the lubricating oil.
Besides clean air, what other media can be transported? Gas, biogas, natural gas, formaldehyde and saturated steam can also be transported. For this kind of special gas, roots blower needs special customization, such as:
The first is the material problem. The roots blower made of cast iron can be used for conveying materials. If special medium is transported, special materials, such as titanium and stainless steel, are required. These materials have higher corrosion resistance and can transport a wider range of media.
Secondly, the medium conveying special gas also needs special sealing. The overall structure of Roots blower is different from that of ordinary air conveying fan. The special seal will prevent gas leakage and ensure the sealing performance of the fan.
Which gases can not be transported by roots blower?
First of all, there are explosive gases. There are great risks in explosive gases, such as hydrogen. There are few manufacturers in the market that can do it, and there are great safety risks. Therefore, there are few things that can be done.
Secondly, toxic gas, which is easy to cause poisoning, can not be transported. Although roots blower has many sealing methods, it can not guarantee complete sealing after long-term operation, which leads to serious safety risks.
Roots blower is divided into two leaf roots blower and three leaf roots blower. The three blade rotor rotates twice at a time, and the rotor is inhaled and discharged three times. Compared with the double blade type, the gas pulsation is small, the vibration is small and the noise is low.
The speed is 150 to 3000 rpm. The flow rate is 0.15-1200 m3 / min, the pressure is 9.8-196 kPa, the power is 0.75-1000 kW, and the single machine weight is 100-9000 kg.
The characteristics of Roots blower are that when the pressure is adjusted within the allowable range, the flow rate changes very little, the pressure selection range is wide, and the forced gas transmission is characteristic. The medium is free of oil during transportation. The utility model has the advantages of simple structure, convenient maintenance, long service life and small vibration of the whole machine.
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