Oil sealed rotary vane vacuum pumps are being used in all areas of vacuum engineering. They are equally suited for both industrial production and research applications. They may be used to generate a rough and medium vacuum or as backing pumps in pump combinations with Roots pumps or high vacuum pumps. The SOGEVAC pumps excel also to their low noise levels and smooth operation.
Many years of experience in vacuum engineering and the latest developments in pump technology combine in the SOGEVAC range the capability to adapt to the requirements of both the industry and the environment. The comprehensive range (pumping speeds ranging from 10 to 1200 m3 x h-1 (5.9 to 707 cfm)) allows every customer to select the right pump for his particular needs.
Application Examples
Car industry
Food industry
Furnaces and plants
Laser technology
Medicinal technology
Metallurgy
Power engineering, long-distance energy
Space simulation
Vacuum coating
Advantages to the User
Continuous operation from atmospheric pressure to ultimate pressure
High pumping speed also at low pressures
Low noise level
Low vibrations
Integrated exhaust filter, better than 99.9% efficient
No oil loss owing to the integrated oil return line
Exhaust gas free of oil mists
Efficient air cooling (standard)
Water cooling (optional)
Low space requirement, easy to install
Rugged
Maintenance-friendly
Compact design
For direct fitting to Roots pumps from SV 100 B up
Optimum size-to-performance ratio
High water vapor tolerance
For use in various applications
Wide range of accessories available for adaptation to differing problems
Design Principle
SOGEVAC pumps are oil sealed rotary vane pumps. Oil injected into the pump chamber for sealing, lubrication and cooling of the pump is recycled from the pump's oil reservoir and filtered, if required, before it is injected. The lubricant system is rated for continuous operation at high intake pressures so that the pumps may be used in a versatile manner in most rough vacuum applications (accessories are required for some pumps).
The oil carried with the process gas is roughly separated in the oil box before the discharged gas enters the integrated exhaust filters where the fine oil mist is trapped. The thus filtered oil is collected in the oil box and then supplied back to the pump. This demister system, optimized to suit all operating conditions of the vacuum pump ensures oil-mist free exhaust gas (degree of separation over 99.9%) even at high intake pressures and when pumping vapors.
Leybold rotary vane pumps from the SOGEVAC series excel through numerous special features:
Compact Design
The pumps have been so designed that efficiency of the pumps will be high. For the SV 10 B through SV 65 B, the motor and pumping section use the same shaft. For the SV 100 B to SV 1200 the motor is linked depending on requirements to the pumping section directly via a coupling or via V-belts as a pedestal motor. All vacuum components like anti-suckback, exhaust filter with oil return line needed for a complete vacuum unit as well as the optimized placement of all controls and monitoring components allow for an extremely compact unit.
Quiet Operation
SOGEVAC pumps are designed throughout to keep the noise level as low as possible. This is ensured by optimized running and sliding speeds and the selection of low-noise drive motors, as well as perfected manufacturing techniques using CNC automatic machines for optimized tolerances and reproducibility of the individual components.
Anti-Suckback Valve
A valve is built into the intake of the SOGEVAC pumps. This "anti-suckback valve" is protected by a metal wire-mesh filter. During standstill of the pump (for example due to shutting down or a power failure) the valve closes the intake. This prevents the pressure from rising in the connected chamber while the pump is vented at the same time. Any suckback of pump oil into the vacuum system is thus also effectively prevented.
This blocking process operates under all operating conditions (below 800 mbar (600 Torr)) and even when the gas ballast valve is open.
Protection of the Environment
The built-in exhaust filter ensures an oil-mist free exhaust gas over the entire range of operating pressures - from atmospheric pressure to ultimate pressure.
Supplied Equipment
All pumps are delivered with the required quantity of oil: SV 10 B to SV 65 B in a separate canister, whereas the SV 100 B and larger pumps already contain the oil and are thus ready for operation.
