Positive Displacement Blowers
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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
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