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China Deman PM VSD Oil-Free Screw Blower Factory - High Energy Efficiency & Suppliers of Class 0 Air Quality Solutions
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
ORV Series — Single-Stage Oil-Free Screw Blower
| 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 |
ODV Series — Dual-Stage Oil-Free Screw Blower
| 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 expected service life of the key components in this oil-free screw blower?
The key components of our oil-free screw blower are engineered for longevity, with a lifespan exceeding 100,000 hours. In wastewater treatment applications specifically, the blower has demonstrated a 0 failure rate over more than 60,000 hours of continuous operation.
Q
How much energy can the oil-free screw blower save compared to a traditional Roots blower?
At 0.5 bar pressure, the oil-free screw blower saves 25–50% energy compared to conventional Roots blowers. The optimized screw rotor profile contributes to 35%–50% greater efficiency, and the overall life-cycle energy saving rate exceeds 40%.
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. This low maintenance frequency significantly reduces downtime and overall operational costs.
Q
Can this blower operate continuously in outdoor or harsh environments?
Yes. The blower is equipped with cooling fins to maintain lower operating temperatures, enabling 24-hour continuous operation. The permanent magnet motor carries an IP55 protection rating, making it suitable for dusty and humid outdoor environments.
Q
What is the difference between the ORV series and the ODV series?
The ORV series is a single-stage oil-free screw blower suitable for lower pressure and air flow requirements, with power ranging from 2.2 kW to 37 kW. The ODV series is a dual-stage model designed for higher performance demands, covering power ranges from 22 kW up to 160 kW, with significantly higher air flow and pressure capabilities.
Q
How does the intelligent control system improve blower reliability?
The intelligent control system provides real-time monitoring of all key operating parameters, eliminating the need for manual inspections. It issues timely early warnings when any indicator deviates from normal range, allowing potential issues to be addressed before they cause failures. Additionally, remote diagnosis and debugging capabilities help resolve problems quickly without requiring on-site visits.