Imported two-stage series Roots blower is a gas conveying equipment that achieves higher pressure ratio and flow stability through the series design of two-stage Roots blowers. It is widely used in fields such as sewage treatment, pneumatic conveying, chemical industry, metallurgy, etc. The following is a detailed introduction about the device:
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**1、 Core Features**
1. * * Dual stage series design**
-* *+Secondary fan in series * *: The gas is pressurized and enters the second stage for further compression, and the final outlet pressure can reach * * 0.1~1.0 MPa * * (depending on the model), suitable for high-pressure demand scenarios.
-Efficiency optimization: Compared to single-stage fans, two-stage designs can provide higher pressure ratios and reduce energy consumption at the same power.
2. * * Structural advantages**
-Synchronous gear drive: Two stage rotors operate synchronously through precision gears to avoid gas backflow and ensure stable output.
-* * No internal compression * *: The working principle of Roots blower is volumetric conveying, and gas pressure is naturally formed through system resistance, suitable for constant flow applications.
3. * * Material and Durability**
-Cast iron/stainless steel shell: Strong corrosion resistance, suitable for harsh environments (such as chemical waste gas treatment).
-High precision rotor: Special surface coating treatment reduces wear and extends lifespan.
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**2、 Typical application scenarios**
-Wastewater treatment: Used for aeration systems to provide continuous oxygen supply.
-Pneumatic Conveying: Conveying powders and granular materials (such as cement and grains).
-Vacuum packaging: Dual stage series connection can adapt to vacuum systems, improving pumping efficiency.
-Chemical process: Transporting flammable and corrosive gases (requiring explosion-proof or anti-corrosion configuration).
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**3、 Recommended imported brands**
1. ****
-Representative work: Delta Hybrid series, integrating Roots and screw technology, with low noise and high efficiency.
2. Gardner Denver, USA**
-Industrial grade durable design, suitable for high load continuous operation.
3. Anlet, Japan**
-Energy saving dual stage fan equipped with intelligent control system.
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**4、 Key parameters for selection**
1. Flow range: 0.5~200 m3/min (to be matched according to operating conditions).
2. * * Pressure level * *: Confirm whether the final outlet pressure after the two-stage series connection meets the system requirements.
3. * * Motor power * *: usually 5.5~300 kW, considering the starting current and variable frequency control requirements.
4. Sealing method: Mechanical seal or labyrinth seal, special treatment is required for toxic/flammable gases.
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**5、 Maintenance points**
-* * Regular inspection * *: Gearbox oil level, belt tension (if belt drive).
-* * Filter cleaning * *: prevents intake impurities from damaging the rotor.
-Temperature monitoring: Abnormal temperature of bearings and housing may indicate lubrication or alignment issues.
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**6、 Precautions**
-Installation requirements: Horizontal installation is required, with flexible hoses at the inlet and outlet to reduce vibration transmission.
-* * Noise Control * *: Imported brands usually come equipped with mufflers, but it is still recommended to perform sound insulation treatment in the computer room.
If further assistance is needed (such as model comparison, domestic alternative solutions, etc.), specific operating parameters can be provided for accurate recommendations.
