Oil lubricated rotary vane vacuum pumps V-VC series

Oil lubricated

Notes: Capacity at suction conditions at inlet connection, The motors comply with EN 60 034-1 / -2 / -30 (IEC 60034) and thermal class F.

Version V-VCX: The functional parts are more resistant to water steam and solvents. In addition, glass-fibre reinforced slide blades (GF) are used that are made of epoxy resin.

Notes: Capacity at suction conditions at inlet connection, The motors comply with EN 60 034-1 / -2 / -30 (IEC 60034) and thermal class F.

Notes: Capacity at suction conditions at inlet connection, The motors comply with EN 60 034-1 / -2 / -30 (IEC 60034) and thermal class F.

Principle of operation:

Pressure increase by volume reduction is the principle behind rotary vane operation. This design offers excellent service for pressure, vacuum or a combination of both. In a cylindrical housing (1) a rotor (2) is positioned eccentrically so that it is on the top almost touching the cylinder (3). Rotor blades or vanes (5) as they are called, are positioned inside rotor slots (4). When the rotor starts turning, due to centrifugal force the blades are thrown out and slide against the internal surface of the cylinder. In this way a cell (6) is formed between two blades with a volume that changes constantly during rotation. Air enters from the inlet port (7) into a cell until the rear blade reaches the far end of the inlet port (8). At this point the cell (6) has achieved its maximum air volume. 

As the cell then moves away from the port its volume (9) becomes smaller and smaller, the air is thus compressed and the pressure rises. Some models are fitted with outlet valves (11) next to the outlet port (10) which stop the backflow of discharged air when the maximum pressure has been reached. De-oiling once through vacuum pumps After its passage through outlet port (10) and outlet valves (11), the oil-gas mixture reaches the de-oiling chamber (12) where the oil is separated from the gas in two steps. Larger oil drops are mechanically separated from the gas and are eventually deposited in the oil sludge recipient (13). The remaining oil gas mixture is then taken through fine filter elements (14) which separate even the smallest oil particles. These are then reintroduced through an oil suction pipe into the pump‘s oil circuit. The virtually oil free gas can be let outside either through the air outlet (15) or through other hose or piping arrangements.

Oil flooded vacuum pumps

Fitted as standard with micro inlet filter or fi ne mesh filter, vacuum non-return valve, gas ballast valve, protection cover and oil separator. Version with water cooling available. Flange motor, bearings on both sides of the rotor, oil/air heat exchanger. 

Models:

V-VGD, V-VCA, V-VC

An oil-water cooler is available for high ambient temperatures or for heat recovery. The exhaust air is cleaned in a built-in mist filter with a very high separation efficiency ensuring oil-free operation in all working conditions. Furthermore, an improved double chamber oil tank with two sight glasses, which maintains the oil supply even under difficult operation conditions, has been incorporated in the vacuum pumps. The water in the oil tank can be seen in the lower inspection glass and then be drained before causing any harm to the vacuum pump.

Standard features:                                                                                                                       Optional features:

-  Liquid separator                                                                                                                          -  Bigger gas ballast valve
-  Blades made from special alloy for long service                                                                        -  Filter control
-  Oil separator with permanent oil re-circulation                                                                           -  Oil level control
-  Gas ballast valve from range 50 up                                                                                            -  Oil temperature control
-  Oil mist filter with bayonet fixing (sizes 50 – 150)                                                                       -  Water cooler
-  Large maintenance cover from range 200 up                                                                             -  Oil cooler, oil heater 
-  Stainless steel mesh filter or paper filter
-  Non-return valve

Special accessories:

-  Vacuum control valve
-  External non-return valve
-  External suction filter
-  Dust separator for installation in pipe system
-  Dampness separator
-  Vacuum gauge
-  Vacuum receiver
-  Special vacuum pump oils
-  Soft starting control system

Oil lubricated

-  Long vane life
-  Low noise level
-  Easy to service
-  High water vapor tolerance
-  Long service intervals
-  For many industrial applications
-  Oxygen conveying pumps available