The operating principle of the blowers is pretty simple: a small wings equipped rotor rotates inside a stator.

Small vortexes of air created by the centrifugal force and the rotation are dragged by the vanes from the aspiration toward the drain. There are no parts in contact, thus the blowers do not require routine maintenance but, since the intake air is also used as cooling fluid, they can operate continuously only within certain ranges of pressure.

To prevent a damage of the engine it is indeed necessary to install vacuum and pressure limiting valves. This product is very versatile and is not particularly delicate. If used as a compressor, the output flow is clean and free of pulsations.

The main application fields include: pneumatic conveying, suction cups conveyors, purification or water oxygenation.

 

R and D series high vacuum pumps are used when the final absolute pressure required is very low. These pumps may run continuously connected to closed containers to be emptied, and may not run continuously at length, at atmospheric pressure. The exhaust from these pumps is not filtered, thus, special purifiers are available for fumes.

The operating principle of these pumps is similar to the lubrificated pumps one. However, in this case, the stator is immersed in the lubrification oil which has also the function of sealing the air loss. The pressure levels reached by this type of pumps are higher than any other rotary vane pump. These pumps are equipped with a Gas Ballast system to avoid the condensation of the water vapour.

These kind of pumps can be made of a single rotor-stator group and are called Single Stage; or they can be made of two rotor-stator groups connected in series so the first group drain is connected to the second group intake system. The latter are called Double Stage.

The main application fields include: refrigeration and air conditioning systems, laboratory applications, freeze-drying, spectrometry and ultracentrifugation. Special Pneurop fittings are available to connect the various elements of the system.

 

 

These pumps consist of a rotor in an eccentric position rotating inside of a cylindrical body. This rotor is equipped with channelings in which the vanes are inserted. During the rotation, as a consequence of the centrifugal force, the vanes are pushed in contact with the body, creating close spaces that increase their volume beckoning air from the container to be emptied and expelling it from the outlet. If used as a compressor, the aspirated air is conducted to the outlet.

Oil-free rotary vane pumps can run continuously both at atmospheric pressure and at the highest vacuum. However, they cannot be used when the aspirated air contains moisture, oil or other liquids traces. At a certain pressure the rotary compressors benefit of supplying air without pulsations. Thus, they don't need a storage tank.

The main application fields include: suction cup movements, automatic machines for packaging, woodworking machines, wood presses, plastic material presses, banknote counting machines. In construction they are used in sprinkler for plaster, low pressure printing machineries, pneumatic conveyor systems.

Upon request it is possible to accessorize the oil free rotary pumps SC.60 140 with a FBX-S noise reduction box.

These vacuum pumps are used when the intake flow may contain moisture, or when a better final pressure is required. These pumps may run continuouslu within certain pressure ranges, or connected to containers to be empetied, whose volume is appropriately sized for the pump flow rate. Long-term use at atmospheric pressure is not recommended.

The lubrification allows this pumps to intake water vapour. To avoid a condensation of the water vapour, the pumps are equipped with a system called ""Gas Ballast"", that introduces air in the compression stage and changes the vapour saturation pressure thus avoiding the condensation. D.V.P. developed a WR pump version with an improved and reinforced Gas Ballast system.

The main application fields of these pumps include: vacuum sealed packaging, thermoforming machines, glass or marble working machines, medical equipments, food-grade pastes or clay extruders.

 

Applications

• Analytical field - ANF
• Centralized vacuum plant - CVP
• Construction - CST
• Environment - ENV
• Food and beverage - FAB
• Glass, stone and woods - GSW
• Packing food - PFD
• Packing non food - PNF
• Plastic, rubber and resin - PRR
• Pneumatic conveying systems - PCS
• Printing and paper - PAP
• Textile industry - TEX