China Deman PM VSD Oil-free Screw Blower - Energy-efficient Supplier from Factory with Class 0 Air Quality
Product Highlight
Low Maintenance Frequency
Key components lifespan can reach >100,000 hours, 0 failure rate in wastewater application for >60,000 hours, >40% life-cycle energy saving rate compared to roots blowers.
Low Energy Cost
At 0.5 bar pressure, saves 25–50% energy compared to Roots blowers. Typically recovers procurement cost within 1 year, throughout the lifetime cycle.
Reliable & Continuous Operation
Equipped with cooling fins for lower operating temp, capable of 24-hour continuous operation.
Procurement Cost
Slightly higher unit price, but fewer installment units needed.
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
| Model | Power (kW) | Max Pressure (MPa) | Max Air Flow (m³/min) | Dimensions (L×W×H) mm | Outlet Connection Size | Unit Weight (kg) |
| ORV 0204 | 2.2 | 0.04 | 2 | 700×360×850 | G2" | 70 |
| ORV 0306 | 4 | 0.06 | 3.05 | |||
| ORV 1804 | 15 | 0.04 | 18.1 | 1560×720×1430 | DN150 | 610 |
| ORV 1505 | 0.05 | 14.8 | ||||
| ORV 1206 | 0.06 | 12.2 | 1340×650×1280 | DN100 | 418 | |
| ORV 1107 | 0.07 | 11.4 | ||||
| ORV 1008 | 0.08 | 10.5 | ||||
| ORV 2304 | 22 | 0.04 | 23.2 | 1700×780×1650 | DN150 | 735 |
| ORV 2205 | 0.05 | 22.9 | ||||
| ORV 1906 | 0.06 | 19.1 | 1560×720×1430 | 650 | ||
| ORV 1807 | 0.07 | 18.9 | ||||
| ORV 1708 | 0.08 | 17.8 | ||||
| ORV 3505 | 37 | 0.05 | 35.6 | 1700×780×1650 | DN200 | 890 |
| ORV 3306 | 0.06 | 33.5 | ||||
| ORV 2707 | 0.07 | 26.7 | ||||
| ORV 2308 | 0.08 | 23.9 |
| Model | Power (kW) | Max Pressure (MPa) | Rated Air Volume (m³/min) | Max Air Flow (m³/min) | Dimensions (L×W×H) mm | Outlet Connection Size | Unit Weight (kg) |
| ODV 2405 | 22 | 0.05 | 22.5 | 24.1 | 1750×1100×1600 | DN150 | 1043 |
| ODV 2106 | 0.06 | 19 | 21.3 | ||||
| ODV 1907 | 0.07 | 18.6 | 19.8 | ||||
| ODV 1608 | 0.08 | 17.5 | 18.1 | ||||
| ODV 3306 | 37 | 0.06 | 33.5 | 35.8 | 1750×1100×1600 | DN150 | 1243 |
| ODV 2907 | 0.07 | 29.2 | 31.2 | ||||
| ODV 2708 | 0.08 | 26.7 | 28.4 | ||||
| ODV 2210 | 0.1 | 22 | 23.8 | ||||
| ODV 1812 | 0.12 | 18.1 | 19.3 | 1248 | |||
| ODV 1215 | 0.15 | 12.3 | 13.5 | ||||
| ODV 5106 | 55 | 0.06 | 51.4 | 52.9 | 2100×1400×1850 | DN250 | 1580 |
| ODV 4707 | 0.07 | 46.5 | 47.5 | ||||
| ODV 4308 | 0.08 | 42.6 | 45.1 | ||||
| ODV 3010 | 0.1 | 30 | 31.5 | DN150 | 1385 | ||
| ODV 2812 | 0.12 | 27.7 | 29.1 | 1387 | |||
| ODV 2315 | 0.15 | 22.6 | 23.8 | ||||
| ODV 7006 | 75 | 0.06 | 69.5 | 72.1 | 2500×1500×2210 | DN300 | 2180 |
| ODV 6207 | 0.07 | 62 | 65.6 | ||||
| ODV 5108 | 0.08 | 51.2 | 54.7 | 2100×1400×1850 | DN250 | 1720 | |
| ODV 4810 | 0.1 | 47.8 | 49.8 | ||||
| ODV 3912 | 0.12 | 38.8 | 41.5 | ||||
| ODV 2815 | 0.15 | 28.8 | 30.8 | 1750×1100×1600 | DN150 | 1398 | |
| ODV 8106 | 90 | 0.06 | 81.3 | 84.5 | 2500×1500×2210 | DN300 | 2180 |
| ODV 7607 | 0.07 | 75.8 | 77.1 | ||||
| ODV 7008 | 0.08 | 69.8 | 73.2 | ||||
| ODV 5610 | 0.1 | 55.8 | 58.7 | 2100×1400×1850 | DN250 | 1820 | |
| ODV 4812 | 0.12 | 47.6 | 50.8 | ||||
| ODV 3715 | 0.15 | 37.2 | 43.7 | ||||
| ODV 10306 | 110 | 0.06 | 103 | 104 | 3000×1800×2350 | DN300 | 3280 |
| ODV 8208 | 0.08 | 82.2 | 82.2 | 2500×1500×2210 | DN300 | 2200 | |
| ODV 7710 | 0.1 | 73.7 | 77.2 | ||||
| ODV 6912 | 0.12 | 65.4 | 68.8 | ||||
| ODV 4715 | 0.15 | 46.7 | 50.3 | 2100×1400×1850 | DN250 | 2100 | |
| ODV 9608 | 132 | 0.08 | 96.1 | 98.1 | 3000×1800×2350 | DN300 | 3480 |
| ODV 8210 | 0.1 | 82.3 | 84 | 2500×1500×2210 | DN300 | 2200 | |
| ODV 7412 | 0.12 | 73.2 | 75.7 | ||||
| ODV 6215 | 0.15 | 62.3 | 65.1 | ||||
| ODV 4918 | 0.18 | 49.7 | 51.8 | 2100×1400×1850 | DN250 | 2100 | |
| ODV 9710 | 160 | 0.1 | 97.1 | 101 | 3000×1800×2350 | DN300 | 3650 |
| ODV 8212 | 0.12 | 82.3 | 82.3 | 2500×1500×2210 | DN300 | 2200 | |
| ODV 7415 | 0.15 | 73.2 | 74.8 | ||||
| ODV 6018 | 0.18 | 60 | 62.3 | ||||
| ODV 5420 | 0.2 | 54.2 | 55.1 |
Frequently Asked Questions
Q What is the lifespan of the key components of an oil-free screw blower?
The key components of our oil-free screw blower are designed to last over 100,000 hours. In wastewater treatment applications, the unit has recorded a 0% failure rate over more than 60,000 hours of continuous operation, ensuring exceptional long-term reliability.
Q How much energy can an oil-free screw blower save compared to a roots blower?
At 0.5 bar pressure, our oil-free screw blower saves 25–50% energy compared to traditional roots blowers. The optimized rotor profile alone can achieve 35%–50% energy savings, and the investment cost is typically recovered within one year of operation.
Q How often does the oil-free screw blower require maintenance?
Maintenance requirements are minimal. The air filter needs to be replaced every 4,000 hours and the gear lubricant oil every 8,000 hours. These are simple, quick tasks that significantly reduce downtime and overall maintenance costs compared to conventional blowers.
Q Can the oil-free screw blower operate continuously in outdoor or harsh environments?
Yes. The permanent magnet motor features an IP55 protection rating, making it suitable for continuous operation in dusty and humid outdoor environments. The unit is also equipped with cooling fins to maintain a lower operating temperature, enabling 24-hour uninterrupted operation.
Q What power and pressure range does the oil-free screw blower cover?
Our oil-free screw blower series covers a wide range of applications. The ORV single-stage series ranges from 2.2 kW to 37 kW with max pressures up to 0.08 MPa. The ODV dual-stage series spans from 22 kW to 160 kW, supporting max pressures up to 0.20 MPa, suitable for large-scale industrial and municipal applications.
Q What intelligent monitoring features does the control system offer?
The intelligent control system provides real-time monitoring of all operating parameters, replacing the need for manual inspections. It features early-warning alerts when any indicator deviates from normal range, and supports remote diagnosis and debugging using continuous operation data, allowing issues to be identified and resolved promptly.