| ROTARY BLOWER / VACUUM PUMP TYPE "ARJ" |
UNOZAWA |
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ROTARY BLOWER / VACUUM PUMP TYPE "ARJ" |
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TYPICAL APPLICATION
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CONSTRUCTION
The standard materials
CASING |
The casing made of cast iron, consisting of the upper suction and the lower horizontal discharge sections, ensures sufficient strength and durability. |
ROTOR |
The three lobe rotor made of cast iron or Ductile cast iron has good quality subjected to high precision machining. The inside clearances are precision matched and optimum efficiency is guaranteed. In addition, as it is perfectly balanced by means of dynamic balancing machine, noise and vibration are minimized. |
BEARING |
The bearings are high precision bearing with load capacity suited for working conditions. Stable performance and long service life are guaranteed. |
TIMING GEAR |
Special considerations have been given to the timing gear, since it is important part of blower as the rotor. Made of chrome molybdenum steel, carbonized, quenched and ground, it is excellent in durability. |
SIDE COVER |
The side cover function as an intermediate chamber between the casing and oil cavity for the bearing/gear. As the side cover has seal system, it prevents lubricating oil from leaking into the casing. |
LUBRICATION |
The timing gear and bearings on both side are subjected to splash lubrication by oil bath. In order to ensure ideal lubrication, oil is used. Depending upon service condition, cooling water path can be provided on both oil cavities. |
PRINCIPLE
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Pair of rotors turn in opposite directions inside the casing, maintaining a precision clearance between the side wall of the casing and the two rotors. Gas flows into the blower as the lobe end and of each rotor passes the suction port. And gas is transferred from the suction side to the discharge side. It is then discharged, forced towards the high-pressure side. Gas at the suction side is caught in volume "V" surrounded by rotor tips (A), (B) and the casing in process as shown in illustrations (1) and (2) at right, and after step (3), (4) and (5), is discharged. With three lobes, this process is repeated six times per one rotation and constant volume of gas proportional to the number of revolutions are discharged. |
For more information, Please ask our catalogue.
SELECTION CHART(For pressure blower service)
HIGH DESIGN PRESSURE BLOWER
The blower can be used for force-feed and circulation of gas in the chemical industry process. The gases to be handled are hydrogen, nitrogen, acetylene, oxygen, petroleum gas, methane, sulfur dioxide, flue gas, town gas, carbon dioxide gas, hydrogen sulfide gas, hydrochloric acid gas, etc.
To meet the application requirement of gas handled, we offer wide range special seal like mechanical seal (Single or Double), non-contact seal. Depending on the process requirement, the blower design pressure could be up to 22 kg/cm2 G (20 MpaG)
Two stage process blower
| Materials | Cast iron, Ductile cast iron, Stainless steel, Cast steel. | |
| Nozzle size | 50 ~ 500 mm ( 2 ~ 20 inch) | |
| Suction pressure | 0 ~ *15 kg/cm2 ( ~ *1.5 MpaG) | |
| Discharge pressure | (When the suction pressure is atmospheric pressure) | |
| Single stage | Two stage | |
| 1,000 ~ 12,000 mmAqG | 10,000 ~ 22,000 mmAqG | |
| (10 ~ 120 kPaG) | (100 ~ 220 kPaG) | |
| Capacity | 100 ~ 27,000 m3/hr ( 60 ~ 16,000 CFM) | |
For higher pressure application is available up to 20 kg/cm2G (2.0 MpaG).
旭豪真空科技有限公司 NO.142,DAH AN Road, Tu Cheng City, |