China Deman PM VSD Oil-Free Screw Blower: Energy-Efficient Factory Solutions from Top Suppliers
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
QWhat is the key advantage of an oil-free screw blower over a Roots blower?
Oil-free screw blowers use an optimized rotor profile that delivers 35%–50% higher energy efficiency compared to Roots blowers at 0.5 bar pressure. They also feature longer component lifespans exceeding 100,000 hours, significantly reducing total cost of ownership over the product lifecycle.
QHow often does the oil-free screw blower require maintenance?
Maintenance intervals are minimal: the air filter needs to be replaced every 4,000 hours, and gear lubricant oil every 8,000 hours. This low-maintenance design means less downtime and lower operational costs throughout the blower's service life.
QCan the oil-free screw blower operate continuously for 24 hours?
Yes. The blower is equipped with cooling fins that effectively lower the operating temperature, enabling stable and reliable 24-hour continuous operation. It has been validated with a 0 failure rate in wastewater applications for over 60,000 hours of continuous use.
QWhat protection rating does the permanent magnet motor carry, and is it suitable for outdoor environments?
The high-efficiency permanent magnet motor carries an IP55 protection rating, making it fully suitable for continuous operation in dusty and humid outdoor environments. It is 8%–10% more efficient than conventional motors and produces lower noise due to its ultra-thin silicon steel sheet construction.
QWhat power and air flow ranges are available for the ODV and ORV series?
The ORV series covers power options from 2.2 kW to 37 kW, with maximum air flow up to approximately 35.6 m³/min. The ODV series ranges from 22 kW to 160 kW, supporting maximum air flows up to approximately 104 m³/min, covering a broad range of industrial and wastewater treatment applications.
QHow does the intelligent control system improve operational safety?
The intelligent control system provides real-time monitoring of all key operating parameters, replacing the need for manual inspections. It issues timely early warnings when any indicator deviates from normal range, allowing potential issues to be addressed proactively. Remote diagnosis and debugging are also supported, enabling fast and efficient issue resolution without on-site intervention.