Introduction
A double stage rotary vane vacuum pump is a mechanical vacuum pump that uses two stages of rotating vanes connected in series to achieve a higher vacuum than a single-stage pump, and it is widely used in laboratories, analytical instruments, and industrial applications that require a reliable medium or high vacuum. In operation, each stage consists of a cylindrical stator with an eccentrically mounted rotor carrying sliding vanes; as the rotor turns, centrifugal force keeps the vanes in contact with the stator wall, trapping gas in the crescent-shaped spaces between the vanes and compressing it as the space decreases, and the compressed gas is discharged through an exhaust valve; in the two-stage design, the outlet of the first stage is connected to the inlet of the second stage, so that the first stage pumps from the vacuum system to an intermediate pressure and the second stage pumps from that pressure to the atmosphere, achieving a lower ultimate pressure, typically down to about 0.1 Pa or lower. The pump is oil-sealed, with the vanes, rotor, and internal surfaces lubricated and sealed by a circulating oil that also cools the pump and seals the small clearances, and a gas ballast valve is often fitted to allow the handling of condensable vapors without contaminating the oil. Double stage rotary vane vacuum pumps are used for vacuum filtration, vacuum distillation, vacuum drying, degassing, freeze drying, rotary evaporation, and for providing the vacuum required by analytical instruments such as mass spectrometers, electron microscopes, and surface analysis systems, as well as in vacuum coating and packaging equipment. Features include high ultimate vacuum, quiet and vibration-free operation, oil mist filters, and thermal protection. With their performance, reliability, and wide application, double stage rotary vane vacuum pumps are essential vacuum sources for laboratories and industry.
Double Stage Rotary Vane Vacuum Pump LDSVP-T2016
Double Stage Rotary Vane Vacuum Pump is particularly configured for pumping air from sealed vessels. It offers even, pulse-free air flow, big preliminary torque design that produces less...
Double Stage Rotary Vane Vacuum Pump LDSVP-T2015
Double Stage Rotary Vane Vacuum Pump is particularly configured for pumping air from sealed vessels. It offers even, pulse-free air flow, big preliminary torque design that produces less...
Double Stage Rotary Vane Vacuum Pump LDSVP-T2013
Double Stage Rotary Vane Vacuum Pump is particularly configured for pumping air from sealed vessels. It offers even, pulse-free air flow, big preliminary torque design that produces less...
Double Stage Rotary Vane Vacuum Pump LDSVP-T2014
Double Stage Rotary Vane Vacuum Pump is particularly configured for pumping air from sealed vessels. It offers even, pulse-free air flow, big preliminary torque design that produces less...
Double Stage Rotary Vane Vacuum Pump LDSVP-T2012
Double Stage Rotary Vane Vacuum Pump is particularly configured for pumping air from sealed vessels. It offers even, pulse-free air flow, big preliminary torque design that produces less...
Double Stage Rotary Vane Vacuum Pump LDSVP-T2010
Double Stage Rotary Vane Vacuum Pump is particularly configured for pumping air from sealed vessels. It offers even, pulse-free air flow, big preliminary torque design that produces less...
Double Stage Rotary Vane Vacuum Pump LDSVP-T2011
Double Stage Rotary Vane Vacuum Pump is particularly configured for pumping air from sealed vessels. It offers even, pulse-free air flow, big preliminary torque design that produces less...
Standards
ISO 21360-1:2020-Vacuum technology-Standard methods for measuring vacuum-pump performance-Part 1: General description
GB/T 40344.1-2021-Vacuum technology-Standard methods for measuring vacuum-pump performance-Part 1: General description
Complies with the above standards, but is not limited to them.
Features
1. Double-stage rotary vane vacuum pump for deep vacuum in laboratory applications.
2. Two-stage pumping provides lower ultimate vacuum than single-stage pumps.
3. Suitable for vacuum distillation, freeze drying, mass spectrometry and high-vacuum systems.
4. Oil-lubricated rotary vane mechanism with high pumping speed and deep vacuum.
5. Includes oil mist filter, inlet filter, gas ballast and operation manual.
FAQ
Q1: What testing scenarios is this pump mainly applied to?
A: The double-stage rotary vane vacuum pump is used in analytical laboratories, research institutions, pharmaceutical development, materials science and industrial applications to provide deep vacuum for instruments and processes requiring lower ultimate pressure than single-stage pumps can achieve. It supports mass spectrometry vacuum systems, gas chromatography inlet systems, vacuum distillation and short-path distillation, freeze drying, electron microscopy, vacuum coating, thermal analysis and high-vacuum sample preparation. The two-stage design achieves deeper vacuum (typically below 0.001 mbar) by compressing gas in two sequential stages, making it essential for analytical instruments and processes requiring high vacuum. It is essential for analytical laboratories, research facilities and industrial operations requiring reliable deep vacuum for mass spectrometry, chromatography, distillation, microscopy and other high-vacuum applications, where the ultimate vacuum level directly affects instrument sensitivity, process efficiency and sample preparation quality in analytical, research and industrial environments.
Q2: What standards does the pump comply with?
A: The double-stage rotary vane vacuum pump complies with relevant IEC 61010 laboratory electrical safety standards and GB/T standards for vacuum equipment. Performance specifications follow ISO 21369 for vacuum pump performance measurement. Users should verify ultimate vacuum and pumping speed for their specific applications. Oil type should follow manufacturer recommendation.
Q3: What is the warranty period for the whole machine and key components?
A: The whole pump is covered by a 12-month warranty. The motor, pump body, stages and drive mechanism are covered, while vacuum oil, filters and vanes are consumables excluded from warranty. Damage from improper oil level, corrosive gas exposure or unauthorized repair is excluded. Extended service contracts are available.
Q4: Is this device difficult to operate? Is professional training required?
A: Operation requires basic training in vacuum pump operation, oil maintenance and safety. We provide an operation manual and remote guidance. Proper oil filling, gas ballast use, inlet protection and maintenance are important for pump performance and longevity.
Q5: What is the typical lead-time for order delivery?
A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.
Q6: Is regular maintenance required? What is the recommended maintenance cycle?
A: Vacuum oil should be checked regularly and changed according to usage, typically every 3-6 months for moderate use, more frequently with corrosive or condensable gases. Oil mist filter and inlet filter replacement when contaminated. Vane inspection and replacement follow the manufacturer schedule. Ultimate vacuum verification periodically.
Q7: Are supporting consumables universal?
A: Vacuum oil, filters and vanes are available from the manufacturer or authorized distributors, though recommended oil and parts are important for pump performance. Long-term consumable cost is moderate depending on usage intensity and gas type.
Q8: Can I customize parameters or supporting accessories?
A: Customization includes pumping speed, ultimate vacuum, voltage, fittings and corrosion-resistant options. Additional filters, oil and accessories can be ordered separately. Custom orders extend delivery lead-time.
Q9: Does the purchase include on-site installation and commissioning service?
A: Standard delivery includes the pump, oil, filters and instruction manual. On-site installation and commissioning are recommended for instrument-grade vacuum systems and can be arranged at additional cost. Remote guidance is provided.
Q10: What types of applications are compatible with this equipment?
A: The double-stage pump provides deep vacuum for compatible laboratory and industrial applications within the pumping speed and ultimate vacuum range. Highly corrosive, toxic or condensable gases require appropriate inlet traps, scrubbers or cold traps to protect the pump and oil. Particulate matter requires inlet filtration. Users should use the recommended vacuum oil, maintain proper oil level, use gas ballast for condensable vapors, install appropriate inlet protection for corrosive or particulate gases, follow scheduled oil and filter changes, and ensure proper ventilation for oil mist exhaust. The pump should not be operated without oil or with incorrect oil type.
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