Oil-free screw blower

Core Working Principle

‌Screw Rotor Design‌
Dual screw rotors (typically three-lobed or five-lobed) are employed, featuring precisely machined synchronous meshing structures. Minute gaps between the rotors and between the rotors and the housing enable effective sealing without lubricating oil, preventing oil contamination.

‌Internal Compression Process‌

• ‌Suction Phase‌: As the rotors rotate, negative pressure is generated, drawing gas into the inter-lobe volumes through the intake port.
• ‌Compression Phase‌: The inter-lobe volumes gradually decrease with rotor rotation, continuously compressing the gas and increasing its pressure.
• ‌Discharge Phase‌: The compressed gas is expelled through the outlet port, completing one operational cycle.

‌Cooling Method‌
Heat generated during compression is dissipated via air cooling or water cooling systems to ensure stable device operation.

Core Product Advantages

‌Clean and Oil-Free‌

• Certified to ISO 8573-1 Class 0 standards, with output gas oil content approaching zero, meeting the stringent purity requirements of industries such as food processing, pharmaceuticals, and electronics.
• A multi-stage filtration system (e.g., 5-stage imported synthetic fiber filtration) removes 99% of particles ≥3 μm, further enhancing gas quality.

‌High Efficiency and Energy Savings‌

• Reduces energy consumption by 30%–40% compared to traditional Roots blowers, with significant advantages in the 0.5 bar(g) and above pressure range.
• Variable Speed Drive (VSD) technology enables real-time speed adjustment based on actual operating conditions, precisely matching gas demand and optimizing energy efficiency.

‌Stable and Reliable‌

• Eliminates the risk of surge, accommodating frequent start-stop cycles and gas flow fluctuations (adjustment range: 20%–99.9%).
• Low-noise design (operating noise ≤85 dB(A)) minimizes impact on the working environment.

‌Smart Integration‌

• Supports integration with Distributed Control Systems (DCS) for remote monitoring and fault diagnosis.
• Equipped with a standard intelligent controller and LCD touchscreen, featuring reserved RS-485 or Ethernet communication interfaces for centralized