Have You Encountered These Vacuum Pump Usage Problems?

Taking stock of common pain points in vacuum applications, providing targeted solutions for selection and operation and maintenance problems.

Oil Mist Leakage Contaminates Products and Workshop

Ordinary oil-lubricated vacuum pumps discharge oil mist, contaminating materials, food, and electronic workpieces, making the workshop air greasy and increasing environmental treatment costs.

Ultimate Vacuum Fails to Meet Process Requirements

Wrong pump selection, insufficient pumping speed, vacuum degree cannot go up, vacuum drying, defoaming, and coating processes fail to meet standards, and the defective rate of finished products remains high.

High Equipment Failure Rate, Complicated Maintenance

Inferior vanes and seals wear quickly, frequent shutdowns for maintenance, difficult procurement of parts, and delays in the normal production progress of the production line.

Cannot Distinguish Between Oil-lubricated and Oil-free, Making Selection Mistakes

Not knowing when to use oil-lubricated and when to choose oil-free; buying the wrong model means the equipment cannot match the process, resulting in a waste of procurement funds.

Core Advantages of Rotary Vane Vacuum Pump

Industrial-grade rotary vane vacuum pump, stable and durable, suitable for diverse vacuum working conditions.

Sturdy and Durable, Industrial-Grade Stable Operation

Mature rotary vane structure design, high-strength pump body shell, high-performance vanes, capable of long-term continuous operation, withstanding the harsh working conditions of industrial sites.

High Energy Efficiency and Low Noise

Matched with high-efficiency motors, optimized pump chamber structure, reduced operating power consumption, excellent noise control of the whole machine, suitable for long-term use in workshops and laboratories.

Simple Maintenance, Reducing Operation and Maintenance Costs

Simple structure, easy disassembly and assembly of wearing parts; oil-lubricated pumps can be equipped with exhaust filters, which can filter 99% of oil mist; oil-free models require no vacuum pump oil.

Multiple Series Covering All Working Conditions

Full series of single-stage oil-lubricated rotary vane, two-stage oil-lubricated rotary vane, and oil-free rotary vane; from rough vacuum to high vacuum, both oil-lubricated and clean oil-free solutions are available.

Can Be Used as a Backing Pump for Matching Units

Can be used as a backing pump for Roots pumps and molecular pumps to form complete vacuum units, meeting the requirements of higher vacuum systems.

Comprehensive Technical Support

Provide selection, installation guidance, and troubleshooting; supply of original factory parts such as vanes, exhaust filters, and seals; support repair and maintenance services.

Explore Our Rotary Vacuum Pump Series

Single-stage Rotary Vacuum Pump

Single-stage Rotary Vacuum Pump

  • Oil-sealed mechanical vacuum pump, working pressure 101325 ~ 1.33×10⁻² Pa

  • High cost-effectiveness, low noise, convenient maintenance, suitable for rough-medium vacuum working conditions

  • Optional exhaust filter, filtering the vast majority of oil mist emissions

  • Representative models: LV0020, LV0100, LV0305

  • Suitable for packaging, metallurgy, chemical, solar energy, and general industrial vacuum pumping

Two-stage Rotary Vacuum Pump

Two-stage Rotary Vacuum Pump

  • Two-stage series compression for higher ultimate vacuum, up to 0.005mbar

  • Excellent pumping performance, stronger water vapor tolerance

  • Suitable for processes and laboratory scenarios with high vacuum requirements

  • Representative models: LD0016, LD0030

  • Vacuum coating, freeze-drying, rectification, scientific research experiments, automotive refrigeration industry

Carbon Vacuum Pump

Carbon Vacuum Pump

  • Graphite vane dry structure, no vacuum pump oil required, no risk of oil mist contamination

  • Outputs clean gas, protecting materials from oil and gas contamination

  • Representative models: LX0025 H06, LT0010V, LT0025V, LT0060V

  • Suitable for food, medicine, transportation, power generation, and processes with zero tolerance for oil and gas

  • Note: Graphite vanes will produce a small amount of graphite dust; add a front-end filtration device if necessary

Overview of Main AC Model Parameters

Specifications overview of the oil-free vacuum pump series for quick matching and selection.

Product Model Motor Power Ultimate Vacuum Rated Voltage Rated Current Rated Flow Product Category

LV 0020

 0.75 Kw 0.5 mBar 200-240△/345-415Y 2.4 A 20 m3/h

Single-stage Rotary Vacuum Pump

LV 0100

 3.0 Kw 0.5 mBar 200-240△/345-415Y 6.8 A 100 m3/h

Single-stage Rotary Vacuum Pump

LV 0305

 7.5 Kw 0.1 mBar 345-415△/600-720Y 16.7 A 250 m3/h

Single-stage Rotary Vacuum Pump

Oil-lubricated Rotary Vane VS Oil-free Rotary Vane Selection Comparison

Comparison Item Oil-lubricated Rotary Vane Vacuum Pump (Single/Two-stage) Oil-free Rotary Vane Vacuum Pump
Working Medium Requires vacuum pump oil, relies on oil sealing and lubrication No pump oil required, graphite vanes for solid self-lubrication
Ultimate Vacuum Extremely high, two-stage can reach 0.005mbar Rough vacuum range, ultimate vacuum is relatively low
Contamination Risk Oil mist exists, exhaust filter can be installed to reduce emissions No oil mist; produces a small amount of graphite dust, filtration can be added if needed
Maintenance Focus Regular replacement of vacuum pump oil and oil filter Regular inspection and replacement of graphite vanes
Recommended Usage Scenarios Requires high vacuum, materials are not afraid of trace oil mist; laboratories, coating, drying, distillation Strictly prohibits oil contamination; food, medicine, some transport and power generation processes
Not Recommended Working Conditions Process media strictly prohibited from contacting oil mist Working conditions pursuing ultra-high ultimate vacuum

Technical Information & Materials

Compiled technical reference materials related to vacuum pumps for selection, equipment commissioning, and troubleshooting.

Project Selection Reference Suggestions
  • Confirm core indicators: required ultimate vacuum, actual pumping volume;
  • Clarify the extracted medium: water vapor, dust, corrosive gases, etc., to determine whether filtration, condensation, or explosion-proofing is needed;
  • Confirm the usage environment: indoor/outdoor, on ships, high temperature and humidity, dust environment;
  • Usage mode: intermittent use or long-term continuous operation;
  • Standalone equipment or a complete central vacuum station.

Applicable Industries and Typical Processes

Covering negative pressure processes in multiple industries, clean rotary vane vacuum solutions are suitable for various scenarios.

Applicable Industries

Food Packaging Processing

Food Packaging Processing

Used for vacuum packaging, degassing, and preservation. Oil-free models eliminate oil mist contamination of food, ensuring hygiene and safety.

Pharmaceutical Industry

Pharmaceutical Industry

Processes such as freeze-drying, concentration, and filtration. Oil-free clean vacuum solutions avoid cross-contamination of pharmaceuticals.

Electronics and Semiconductors

Electronics and Semiconductors

Processes such as coating, etching, and packaging. Two-stage oil-lubricated rotary vane pumps provide stable high vacuum, ensuring yield.

Solar Photovoltaics

Solar Photovoltaics

Cell coating and lamination vacuum pumping. Oil-lubricated rotary vane vacuum pumps are stable and reliable, suitable for continuous production.

Metallurgical Vacuum Furnace

Metallurgical Vacuum Furnace

Vacuum melting, annealing, and sintering. Under high-temperature working conditions, oil-lubricated rotary vane pumps maintain stable pumping speed.

Fine Chemical Processing

Fine Chemical Processing

Processes such as distillation, desolvation, and drying. Anti-corrosion oil-lubricated rotary vane pumps adapt to a variety of chemical media.

Scientific Research Laboratory

Scientific Research Laboratory

Two-stage oil-lubricated rotary vane pumps have a high ultimate vacuum, meeting the needs of precision experiments such as freeze-drying, coating, and analytical instruments.

Automotive Refrigeration and Air Conditioning

Automotive Refrigeration and Air Conditioning

Vacuum pumping and leak detection of refrigeration systems. Oil-lubricated rotary vane pumps have fast pumping speeds, shortening the production cycle.

Typical Processes

Vacuum Coating

Vacuum Coating

Two-stage oil-lubricated rotary vane pumps are used as backing pumps, combined with Roots pumps or molecular pumps, to obtain a highly clean vacuum environment.

Vacuum Drying and Defoaming

Vacuum Drying and Defoaming

Removing moisture and bubbles from materials. Oil-lubricated rotary vane pumps have stable pumping speed and high drying efficiency.

Vacuum Filtration and Impregnation

Vacuum Filtration and Impregnation

Accelerating liquid filtration and impregnation penetration. Oil-free models are suitable for clean scenarios in food and medicine.

Vacuum Rectification and Distillation

Vacuum Rectification and Distillation

Lowering the boiling point of materials and preventing the decomposition of heat-sensitive substances. Two-stage oil-lubricated rotary vane pumps provide stable vacuum.

Vacuum Precooling and Preservation

Vacuum Precooling and Preservation

Quickly lowering the temperature of fruits and vegetables and extending the preservation period. Oil-lubricated rotary vane pumps with large pumping speed quickly establish vacuum.

Backing Pump Matching Units

Backing Pump Matching Units

Combining with Roots pumps and molecular pumps to form vacuum units, achieving greater pumping speed and higher ultimate vacuum.

Vacuum Degassing

Vacuum Degassing

Removing dissolved gases and tiny bubbles in liquids or resins, preventing pore defects, and improving product density and appearance quality.

Vacuum Adsorption Handling

Vacuum Adsorption Handling

Using vacuum negative pressure to adsorb workpieces such as glass, panels, and cartons, and cooperating with robotic arms to achieve automated handling and palletizing.

Note: Oil-lubricated rotary vane vacuum pumps cannot extract gases with high oxygen content, strong corrosiveness, or large amounts of dust particles; they cannot be used directly as transfer pumps or compression pumps.

Customer FAQs

Summary of common questions to help with quick selection.

How to choose between single-stage and two-stage oil-lubricated rotary vane pumps?

For ordinary rough-medium vacuum and the pursuit of cost-effectiveness, prioritize single-stage oil-lubricated rotary vane vacuum pumps; if the process requires a very high ultimate vacuum, such as coating, freeze-drying, and precision experiments, prioritize two-stage oil-lubricated rotary vane vacuum pumps.

What to do if the oil mist from the oil-lubricated rotary vane vacuum pump is very large?

An original exhaust filter can be configured, which can filter 99% of oil mist; replace the vacuum pump oil regularly, choose food-grade vacuum pump oil, and proper maintenance can greatly reduce oil mist emissions.

Is the oil-free rotary vane vacuum pump completely free of contaminants?

Oil-free models do not generate oil mist, but the friction of graphite vanes will produce a small amount of graphite dust; if the process is sensitive to dust, a filtration device needs to be equipped at the intake or exhaust end.

Can a rotary vane vacuum pump be used as a backing pump for a Roots pump?

Yes, single-stage and two-stage oil-lubricated rotary vane vacuum pumps are often used as backing pumps for Roots vacuum units. After combination, they achieve greater pumping speed and higher vacuum.

What gases cannot be pumped by a rotary vane vacuum pump?

Oil-lubricated rotary vane pumps are not suitable for extracting highly corrosive gases, large amounts of dust particles, or high-concentration oxygen; they cannot be used as transfer pumps or compression pumps; it is recommended to add a pre-treatment device for corrosive gases.

Can you provide rotary vane pump accessories and repair services?

Yes; complete accessories such as vanes, exhaust filters, seals, and vacuum pump oil; provide troubleshooting consultation, factory repair, and on-site maintenance technical guidance.

Do you have any questions about vacuum pump systems and solutions?

Please fill in your requirements carefully, and we will contact you within 24 hours.

Products
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