Deman PM VSD Oil-free Screw Blower - Energy-efficient Solution from China Suppliers and Factory

Product Highlight

Product Structure

Oil-free Screw Blower Air-end

• ● Mature and proven screw compression technology
• ● High reliability and long service life
• ● Stable performance under continuous operation
• ● Optimized rotor profile for higher efficiency, can save 35%-50% comparing to roots blower

High-Efficiency Permanent Magnet Motor

• ● High quality cold-rolled rails, ultra-thin silicon steel sheets, enables low temperature rise, and lower noise
• ● IP55 protection rating, designed for continuous operation in dusty and humid outdoor environment
• ● 8%-10% more efficient than traditional motors

Intelligent Control System

• ● Real-time monitoring of operating status to replace manual inspections and obtain real-time operating data
• ● Timely early-warning when indicator deviates, allowing potential problem to be eliminated in advance
• ● Remote diagnosis supported by continuous operation data and remote debug to timely solve issues

Air Inlet Filtration

• ● Using genuine imported filter material, woven with a folding process, it can filter out 99.9% of particles smaller than 1μm, protecting the service life of the screw blower air end

Sound Insulation & Structure

• ● Constructed with 2mm sheets and a 6mm chassis steel plate, it is robust and reliable. Featuring a high-density dustproof design, a labyrinth-style air intake, and a small-hole muffler, resulting in significantly lower noise level

Easy Maintenance

• ● Only need to replace air filter every 4,000 hours and gear lubricant oil every 8,000 hours. Maintenance is easy and quick

Technical Parameter

ORV Series — Single-Stage Oil-Free Screw Blower

ODV Series — Dual-Stage Oil-Free Screw Blower

Frequently Asked Questions

• Q What is the service life of the key components in this oil-free screw blower?

  The key components are designed to last over 100,000 hours. In wastewater treatment applications, the blower has demonstrated a 0 failure rate for more than 60,000 hours of continuous operation, making it an extremely reliable solution for demanding environments.

• Q How much energy can this blower save compared to a traditional Roots blower?

  At 0.5 bar pressure, this oil-free screw blower saves 25–50% energy compared to Roots blowers. The optimized rotor profile also achieves 35%–50% higher efficiency. In most cases, the energy savings allow users to recover the procurement cost within approximately 1 year.

• Q How often does this blower require maintenance?

  Maintenance requirements are minimal. The air filter needs replacement every 4,000 hours, and the gear lubricant oil every 8,000 hours. This low maintenance frequency significantly reduces downtime and overall operating costs over the equipment's lifetime.

• Q Is this blower suitable for 24-hour continuous outdoor operation?

  Yes. The blower is equipped with cooling fins to maintain a lower operating temperature, enabling stable 24-hour continuous operation. Additionally, the permanent magnet motor carries an IP55 protection rating, making it suitable for dusty and humid outdoor environments.

• Q What air filtration capability does the blower provide?

  The air inlet filtration system uses genuine imported filter material processed with a folding technique. It effectively filters out 99.9% of particles smaller than 1μm, ensuring that the air end of the screw blower is well-protected and its service life is maximized.

• Q What power and pressure ranges are available in the ORV and ODV series?

  The ORV series covers power ranges from 2.2 kW to 37 kW, with maximum pressures from 0.04 MPa to 0.08 MPa and air flows up to 35.6 m³/min. The ODV series offers a wider range from 22 kW to 160 kW, with pressures up to 0.2 MPa and air flows reaching over 100 m³/min, accommodating a broad spectrum of industrial applications.