Best Ever Oil-Sealed Rotary Screw Vacuum Pumps
Adhering to highest standards based on 15 years mature experience
Table Of Contents
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Hot Products
Top Picks for Cutting-Edge Performance
EVS 450
- Max. flow rate: 426 m³/h
- Motor power: 5.5 kW
- Cooling type: Air cooling
- Noise level: 55 – 70 dB
- Weight: 700 kg
EVS 1300
- Max. flow rate: 1285 m3/h
- Motor power: 22 kW
- Cooling type: Air cooling/Water cooling
- Noise level: 55 – 76 dB
- Weight: 1050 kg
EVS 2000
- Max. flow rate: 1925 m3/h
- Motor power: 37 kW
- Cooling type: Air cooling/Water cooling
- Noise level: 65 – 79 dB
- Weight: 1500 kg
Why Screw Vacuum Pump
Discover Unbeatable Features and Benefits
Smart Automation
Achieve peak operational efficiency with intelligent PLC and variable speed drive inverter (VSD).
Peak Performance
Crafted with robust construction and advanced technology to meet highest industry standards.
Energy Efficiency
Save on significant energy costs with our high-efficiency IE4 PM motor.
Quiet Operation
Enjoy a noise-free environment with operations as low as 55 dB.
Consistent Productivity
Trust in the stable vacuum performance for uninterrupted operations.
Remote Monitoring
Effortlessly monitor your pump status remotely by using a PC, Pad or Smartphone.
Comparison: Rotary Vane vs. Oil Screw Pump
Oil-sealed rotary screw vacuum pumps are increasingly favored over rotary vane, liquid ring, or rotary piston vacuum pumps due to their distinct and numerous advantages.
Rotary Vane Vacuum Pump
- IE2 motor, up to efficiency of 83%
- High power consumption without inverter
- High noise above 70 dB
- High oil evaporation during operation
- Frequent oil replacement required
- Many pumps needed to build a system
- Non-stable pressure from time to time
Screw Vacuum Pump
- IE4 PM motor, up to efficiency of 97%
- Power consumption saving up to 50%
- Quiet operation down to 55 dB
- Environmental-friendly super low emission
- Convenient long period oil change
- One integrated system with small footprint
- Stable vacuum for productivity
Cost Structure Analysis of Oil Screw Pump
Let’s take a closer look at the costs associated with owning an industrial vacuum pump throughout its lifespan. The analysis of the expenses highlights that energy consumption is the dominant cost. In details:
- 10%: Initial Purchase Cost
- 10%: Miscellaneous Costs
- 30%: Maintenance Costs
- 50%: Energy Consumption Cost
Opting for an energy-efficient vacuum pump can greatly reduce your overall expenses. You’ll enjoy substantial savings over time.
System Breakdown
Explore the Excellence Behind the Integrated Systems
Screw Vacuum Pump
- Twin-screw design with high reliability, high efficiency and low noise
- Absolute no leak due to non-shaft design at inlet
- Maximum ultimate pressure of 0.3 mbar
PM Electric Motor
- IE4 motor with super premium efficiency up to 97%
- IP55 enclosure, protection from dirt, dust and water
- Integrated PTC thermal protector inside motor winding
PLC and Inverter
- Smart operation due to PLC, vector power inverter and PM motor
- High efficient and durable INOVANCE inverter inside
- 6″ color touch screen
Cooling System
- High efficient with low noise
- Specially designed cooler controls pressure drop with sufficient load redundancy
- Thermostatic valve and sensor ensure proper working temperature
Inlet Filter
- Pre-filter design with 99% filtering efficiency @5 Micro
- Easy replacement of filter elements
- Polyester material available for vapory application
Inlet Control Valve
- Super low pressure differential improves pump efficiency
- The pump can operate at 500 mbar(a).
- External actuator or additional compressed air not required
Oil Separator
- Ultra-low oil exhaust, less than 3 ppm
- Small exhaust back pressure and power consumption due to super low separation pressure drop
- Optimized filter elements
Noise Reducer
- Soundproof fan in the box
- Thicker steel plate and sound absorbing foam efficiently isolate the noise
- Noise level is down to 55 dB(a).
Full synthetic vacuum oil
- Enhances vacuum pump performance
- High temperature resistance
- Ideal for vapor-intensive applications
Essential & Professional Knowledge
Your Comprehensive Guide to Understand Oil Screw Pumps
Oil-sealed rotary screw vacuum pumps are sophisticated equipment used for creating a vacuum by rotating a pair of meshed screws.
Unlike other types, these pumps use oil for sealing, lubrication, and cooling. The oil forms a seal between the screw threads and the casing, enhancing efficiency by preventing air leakage. These pumps are known for their consistent vacuum levels, low maintenance, and operational efficiency, making them ideal for various industrial applications.
Oil-lubricated screw pumps excel in rough vacuum industrial applications, operating efficiently between atmospheric pressure and 100 Pa (1 mbar) – a range typically defined as a rough vacuum.
They aren't the ideal choice for medium or high vacuum tasks where more specialized equipment, such as dual-stage rotary vane pumps, would be necessary to achieve and maintain lower pressures effectively.
The primary benefit is energy efficiency. While many pumps claim to be energy-saving, not all utilize IE4 super premium efficiency motors – some don’t even meet the IE2 standard.
Our oil screw vacuum pumps are designed with top-tier motors with VSD technology (Variable Speed Drive) for maximum energy savings. You may save up to 50% on energy costs compared to alternative mechanical vacuum pumps with fixed speeds.
Absolutely. Oil-sealed vacuum pumps are a perfect fit for central vacuum systems, particularly replacing multiple older pumps with a single EVS model, which results in a quieter, more efficient, and stable system. For instance, one EVS 950 can replace three rotary piston pumps, and two EVS 1800 can substitute for five water ring pumps, saving energy and space even in smaller facilities.
Key factors include the required vacuum level, pumping speed, nature of the application (dry or wet), maintenance requirements, noise levels, and energy efficiency. It's also important to consider the space available for installation and any specific environmental conditions of the application area.
Oil-sealed rotary screw vacuum pumps stand out for their high efficiency, durability, and ability to maintain a consistent vacuum over long periods.
Unlike dry vacuum pumps, they use oil for sealing, lubrication, and cooling, resulting in quieter operation and less wear on the pump components. These features make them ideal for demanding industrial applications where reliability and minimal maintenance are paramount.
Industries that demand reliability, efficiency, and continuous operation, such as semiconductor & electronics, aerospace components, thermoforming, plastic molding, printing, woodworking, food processing, high altitude simulation as well as central vacuum systems, find great value in our oil-sealed rotary screw vacuum pumps.
Yes, these pumps are well-suited for moist applications. They often feature a gas ballast valve, which helps in managing and expelling vapor within the system. Additionally, setting a higher operating temperature can significantly aid in handling moisture by reducing condensation inside the pump.
For applications with excessive wetness, installing a water-oil separator at the inlet is recommended. This addition ensures efficient separation of water from the oil, preventing performance issues and maintaining the pump's efficiency even in very humid conditions.
Indeed, our competitor has a few versions like standard, humid and turbo.
We offer one versatile standard version that can be tailored to different working conditions by simply adjusting parameters and switching oils. For instance, in vapor-rich environments like brick making, switching to full synthetic oil from standard mineral oil is effective and incurs minimal additional cost.
We prioritize adapting our standard model to your specific needs without extra charges.
The nameplate figure, such as the 0.3 mbar on EVS screw pumps, represents the ultimate pressure achievable under ideal, no-load conditions.
In real-world industrial applications where continuous air displacement is required, the operational vacuum maintained is typically 10 to 100 times above the nominal level. This ensures the pump effectively manages incoming air and maintains the necessary working pressure, usually between 3 mbar to 30 mbar.
Regular maintenance includes checking and replacing the oil, oil filter, and air filter, along with inspecting and cleaning various components like the air-oil separator and cooling system. Adherence to a scheduled maintenance plan ensures optimal performance and longevity of the pump.
Everblue pumps are equipped with sophisticated oil mist eliminators and fine filtration systems, significantly reducing oil mist emissions. This not only makes our pumps environmentally friendly but also ensures a cleaner and healthier working environment.
Industry Giants Partnership: a Brief Development History
1980
Quincy Compressor launched the world’s first oil-sealed rotary screw vacuum pump, later expanding to China with a new Kunshan factory in 2004.
2010
The acquisition of Quincy by Atlas Copco led to a merged technological prowess, enabling them to maintain the new market dominance for over a decade.
2019
Everblue, established by Quincy’s ex-chief engineer and a veteran R&D team, rapidly emerged as a market leader in China, outshining industry giants with superior technology.
Why Choose Us
Your Partner in Success with Proven Solutions
Each product is meticulously crafted to the highest standards.
Our advanced solutions align perfectly with your specific needs.
Enjoy superior quality without high price tag, thanks to our efficient production.
With 12 models, find the perfect fit for your varied flow rate requirements.
Projects & Applications
Navigating Through Our Project Achievements
Industry Application: Chip Packaging
Industry Application: CNC Machines
Industry Application: Wookworking
Industry Application: Semiconductor
Industry Application: Paper Printing
Industry Application: Display Pad Assembly
Industry Application: Glass Manufacturing
Industry Application: Brick Manufacturing
Industry Application: Food Industry
Ordering Process
Quick Order Steps, Quicker Delivery
Step 1 | Choosing Your Model
Pick the right model(s) and quantity for your project. Everblue offers complimentary proposals to guide your selection.
Step 2 | Initiating Production
Kickstart the manufacturing process with a 30% deposit based on the agreed-upon proforma invoice.
Step 3 | Arranging Shipment
Expect your shipment to be dispatched once production wraps up in about 3 weeks and the remaining 70% balance is settled.
Step 4 | Guided Setup and Activation
Benefit from our engineer’s expertise for seamless on-site installation and commissioning, ensuring any technical hiccups are swiftly addressed.
Key Parameters
Harness the Power of Details for Your Perfect Pick
Model | Flow Rate (m3/h) | Ultimate Pressure (mbar) | Motor Power (kW) | Noise (dB) | Weight (kg) |
EVS 450 | 426 | 0.3 | 5.5 | 55-70 | 700 |
EVS 550 | 545 | 0.3 | 7.5 | 55-70 | 700 |
EVS 750 | 727 | 0.3 | 11 | 55-70 | 700 |
EVS 950 | 963 | 0.3 | 15 | 55-74 | 1050 |
EVS 1100 | 1112 | 0.3 | 18.5 | 55-76 | 1050 |
EVS 1300 | 1285 | 0.3 | 22 | 55-76 | 1050 |
EVS 1800 | 1751 | 0.3 | 30 | 65-79 | 1500 |
EVS 2000 | 1925 | 0.3 | 37 | 65-79 | 1500 |
EVS 3000 | 3052 | 0.3 | 45 | 67-80 | 3200 |
EVS 3900 | 3863 | 0.3 | 55 | 67-80 | 3200 |
EVS 4800 | 4870 | 0.3 | 75 | 72-85 | 5500 |
EVS 5600 | 5632 | 0.3 | 90 | 72-85 | 5500 |
EVS 6200 | 6181 | 0.3 | 110 | 72-85 | 5500 |
Most Popular Questions
For distributors, we offer a 12-month warranty for the entire system and an extended 24-month warranty for the rotary screw vacuum pump, starting from the sea shipment's Bills of Lading date. For other shipping methods, the warranty begins from the day we dispatch it from the factory.
Typically, we take about 4 to 6 weeks. But if we have everything ready in stock, we might get it to you in just 2 weeks!
We’re open to provide OEM service at the moment, in condition that the name of Everblue is mentioned as the provider on the machine.
Everblue is the most experienced and top-tier rotary screw vacuum pump manufacturer in China. As its strategic partner, Elitevak manages all export activities efficiently.
We prefer wire transfers (T/T) – 30% upfront and the balance before we ship your order. If we're racing against time and the lead time is under 3 weeks, we'd appreciate full payment upfront. It just helps speed things up!