Two-stage oil-free screw vacuum pumps represent a significant advancement in vacuum technology towards high performance, high cleanliness, and high reliability. These devices utilize two screw rotors that rotate synchronously and contactlessly in opposite directions within a precision chamber, creating periodic volume changes and achieving efficient gas extraction and compression. Their core breakthrough lies in completely eliminating traditional oil lubrication systems. Leveraging a special self-lubricating coating and extremely precise tolerances, they achieve completely oil-free operation while ensuring excellent thermal management and stable high vacuum performance.
Compared to single-stage pumps or other oil-free solutions, their two-stage compression structure enables rapid transitions from low vacuum levels, achieving ultimate vacuum levels below 0.1 Pa, while maintaining efficient pumping speeds across the entire pressure range. The integrated cooling system and gradient compression design effectively control temperature rise, preventing thermal deformation of the rotor and deterioration of the process medium, making them particularly suitable for handling sensitive gases and condensable vapors.
Oil Free Vacuum Pump Key Advantages and Comparison with Competitive Products
Ultra-high-power screw compressors with varying horsepower meet the needs of high-load production at varying scales and require matching vacuum pumps with matching pumping speeds. For 60-horsepower screw compressors (commonly used in applications such as drying large-scale lithium battery cathode materials and distillation of chemical intermediates), a foreign customer requires a 110kW oil-free, two-stage
Screw Vacuum Pump with a stable rated pumping speed of 180-220 m³/h and a pumping speed adjustment range of 20%-100%. This speed can be flexibly adjusted based on the 60-horsepower compressor's exhaust volume (approximately 7.5-8.5 m³/min). This ensures uniform vacuum within the drying chamber, avoiding extended drying cycles due to insufficient pumping speed (for example, cathode material drying cycles must be controlled within 4-6 hours) or excessive compressor load due to excessive pumping speed (load fluctuations must be ≤±5%).
For ultra-large-scale applications (such as petrochemical catalytic reactions and photovoltaic silicon wafer coating) using 75-horsepower screw compressors, customers are particularly concerned about the
Vacuum Pump's variable-load pumping speed responsiveness. The vacuum pump was required to receive real-time compressor load signals via the PLC system. When a 75-horsepower air compressor's load increases from 50% to 100% (approximately 9.5-10.5 m³/min) due to production demand, the vacuum pump's pumping speed could increase from 90 m³/h to 240 m³/h within 20 seconds, synchronizing with the compressor's compressed air output. This ensured a stable vacuum level of 2-5 Pa during the catalytic reaction, preventing vacuum fluctuations that could reduce the reaction conversion rate (the conversion rate must be ≥98%).
Key Factors for Choosing Our Vacuum Pumps:
1. We insist on using the best materials.
2. We refuse to cut corners.
3. We strictly adhere to process requirements.
4. We provide comprehensive home service. No lubrication required, clean exhaust gas, free of oily molecules. No maintenance needed for daily use, convenient and hassle-free.
Five Highlights for Craftsmanship: 1. Beautiful appearance; compact and exquisite, easy to move.
2. Powerful motor; ensures stable machine operation, energy saving.
3. Oil-free low noise; external silencer, sound-insulating thickened outer wall.
4. Upgraded heat dissipation; low temperature rise, continuous operation without stopping.
5. Rapid air extraction; core imported components, stable and fast air extraction.
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