Positive Displacement Blowers

Positive-displacement blowers have rotors, which "trap" air and push it through housing. Positive-displacement blowers provide a constant volume of air even if the system pressure varies. They are especially suitable for applications prone to clogging, since they can produce enough pressure - typically up to 1.25 kg/cm2 - to blow clogged materials free. They turn much slower than centrifugal blowers (e.g. 3,600 rpm), and are often belt driven to facilitate speed changes. Specifications

• Output Power : 0.2 Kw To 7.5 Kw
• Max Flow : 530 M3/Hr (312 Cfm)
• Max Pressure : 570 Mbar (228 In H2o)
• Max Vacuum : 440mbar (174 In H2o)
• Stages : Single/Double Electrical
  • 220 Vac, 50 Hz, Single Phase
  • 440 Vac, 50 Hz, Three Phase

Features The Ring Blowers are suitable for all those applications requiring considerably higher pressure. Side Channel exhausters are used in all those applications requiring an operating vacuum higher than the one achievable by a fan, but not as to require the use of a vacuum pump. The rotating parts are not in contact with the casing. Therefore, no friction during operation and thus no internal lubrication is necessary. The other main features are:

• Higher pressure ratio
• 100% oil-free air
• Low noise level (65dba Normal, 85 dba Max.)
• 140% Overload protection
• ±10% Voltage fluctuation tolerance
• Rated for continuous duty
• IP 54 Protection
• Class F insulation
• Pressure die casted body, impeller & rotar
• Low temperature rise
• No, vibration, and therefore complete
• Pulsation- free discharge
• Cooler running, double sealed NSK (Japan) bearings

Applications The Ring Blowers are suitable for very wide field of application some of them are:

• Pneumatic conveying of solids/liquids
• Vacuum transfer of components/sheets
• Blowing away debris/sucking away debris
• Sorting/counting of cards/envelopes/papers
• To suck debris/gases from clean rooms/enclosed spaces/tunnels/laboratories
• To agitate and aerate water in spa/whirlpool/swimming pool/fishing tanks/aqua culture tanks
• Furnace fuel burning
• Beverage bottling/labeling drying
• Medical/dental suction units

Operating Principle The Blower includes an impeller and a side channel formed with a semi-circular side wall, having an inlet and outlet. As the impeller rotates, the air between the impeller blades is radially and circumferentially accelerated and pushed into the side channel. Here it is further compressed and forced back towards the impeller blades where the air is further accelerated. As air is transported along a spiral path through the impeller and side channel, each impeller blade increases the compression and acceleration until the air reaches the point where the side channel is connected to the discharge flange, where it is discharged. This type of blower is also referred to by other names such as Regenerative blower, Ring Compressor, Side channel blower or Vortex Blower. The ring blower or exhauster increases the pressure of the aspirated gas by the creation, in the peripheral torodial channel, of a series of vortexes caused by the centrifugal thrust of the impeller. While the impeller is rotating, the vanes force the gas forward and, because of the centrifugal thrust, outwards, producing a helical motion. During this motion, the gas is recompressed repeatedly with a consequent linear pressure increase along the length of the channel. Applications and advantages Ring blowers are suitable for all those applications requiring considerably higher pressures than that which can be achieved using centrifugal fans. Side channel exhausters are used in all those applications requiring an operating vacuum higher than the one achievable by a fan, but not as high as to require the use of a vacuum pump. The rotating parts are not in contact with the casing. There is therefore no friction during operation and thus no internal lubrication is necessary. The gas moving through the machine therefore remains uncontaminated and completely oil-free. The Other Main Features Are

• Beautiful surface
• Easy installation
• Low noise level
• No vibration and therefore complete dynamic
• Pulsation free discharge
• Minimal maintenance
• Higher pressure ratios
• Cooler running bearings
• Longer grease life
• Simple maintenance
• 100% oil free air
• Suitable to environment protection
• Small dimension