China Deman PM VSD Oil-Free Screw Blower – Energy Efficient Solutions from Top Suppliers and Factory
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
- 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 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
- 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
- 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
- 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
- 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
What is the main advantage of an oil-free screw blower over a traditional Roots blower?
The oil-free screw blower offers 25–50% energy savings at 0.5 bar pressure compared to Roots blowers. Its optimized rotor profile delivers higher compression efficiency, and key components have a lifespan exceeding 100,000 hours, significantly reducing lifetime maintenance and energy costs.
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. This simple schedule significantly reduces downtime and operating costs compared to conventional blower systems.
Is the screw blower suitable for continuous 24-hour operation?
Yes. The unit is equipped with cooling fins that help maintain a lower operating temperature, enabling reliable 24-hour continuous operation without performance degradation. It has also demonstrated a 0 failure rate in wastewater applications for over 60,000 hours.
What power range and air flow configurations are available?
The product line covers power options from 2.2 kW up to 160 kW, with maximum air flow ranging from 2 m³/min to over 100 m³/min, and pressure options from 0.04 MPa to 0.20 MPa. Both single-stage (ORV) and dual-stage (ODV) models are available to suit various application requirements.
Can the intelligent control system support remote monitoring?
Yes. The intelligent control system provides real-time monitoring of all operating parameters, replacing the need for manual inspections. It supports remote diagnosis and debugging based on continuous operation data, and delivers early-warning alerts when any indicator deviates from normal thresholds.
How effective is the air inlet filtration system?
The air inlet filtration system uses genuine imported filter material processed with a folding technique. It is capable of filtering out 99.9% of particles smaller than 1μm, effectively protecting the screw blower air-end from contamination and extending its overall service life.