| Products >> Blowers |
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Airvac Rotary Twin Lobe Roots Blowers (Compressors) are positive displacement type blowers which uses roots principle of operation. These blowers are capable of delivering high volume at low pressure. 100% oil free delivery, Low power consumption, and long term trouble free operation is main advantage of these blowers. These blowers are available in the following version: |
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| Air Cooled Blowers |
Air cooled blowers require surrounding air to dissipate heat generated due to operation. Generally, these blowers are suitable for pressure up to 7000 mmWG (0.7 Kg/cm2). |
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| Water Cooled Blowers |
Water-cooled blowers require water to dissipate heat generated due to operation. A water jacket is provided inside the plates to cool down the bearings. Generally, these blowers are used when the pressure is more than 7000 mmWG (0.7 Kg/cm2). |
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| Gas Compressors |
Gas compressors are specially designed compressors having the compression chamber totally isolated from bearing chamber and gear chamber. The isolation of compression chamber prevents the damage of bearings due to corrosive gas. These compressors are generally available in water-cooled version and these are used for pressure more than 7000 mmWG (0.7 Kg/cm2) and above. |
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| Dry Vacuum Blowers |
Vacuum blowers are basically rotary twin lobe (roots) blowers capable of delivering dry and 100% oil free vacuum up to 5000 mmWG (0.5 Kg/cm2). |
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| Blowers Applications |
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Cement & Lime Industries : Aeration, fluidization, pneumatic conveying, kiln and blending. |
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Sugar & Distillery Industries : Aeration, biogas conveying, and boosting |
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Milling & Baking Industries : Blending and conveying. |
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Resin & Plastic Industries : Processing and conveying. |
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Power Industries : Fly Ash Conveying and aeration. |
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Fertilizer & Chemical Industries : Vacuum processing and conveying. |
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Water & Sewage Treatment Plants : Aeration and filter backwashing. |
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Paper & Pulp Industries : Chip Conveying and process vacuum. |
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Oil & Gas Industry : Sparging and Gas Collection. |
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Soil Remediation : Sparging and Vacuum Extraction. |
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Dry Bulk Handling : Trailer (Truck) unloading and extraction. |
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Glass Industry : Burner air and mold cooling. |
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Septic Tank : For emptying septic tanks using vacuum. |
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Hatcheries & Aquaculture Industries : Oxygen supply in ponds , using aeration process in fish farms. |
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Electroplating : Aeration of plating tanks. |
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| Salient Features |
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Capacity, from 6 m3/hr to 29,000 m3/hr. |
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Upto 1 kg/cm 2 pressure in single stage and 2 kg/cm 2 pressure in double stage. |
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Dry vacuum upto 5000 mmwg |
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Split casing design facilitates easy maintenance and repair. |
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High efficiency with lower power consumption. |
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Precision case hardened and ground helical gears for smooth and quieter operation. |
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Blowers (compressors) are also available in special material of construction depending on application. |
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All rotating parts are dynamically balanced for smooth running and putting a on bearings. |
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Airvac blowers (compressors) are designed with leak proof sealing arrangement for 100% oil free applications. |
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Lower maintenance cost. |
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Rugged construction for heavy-duty application. |
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Prompt after sales service all over the country. |
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| Standards Accessories (Without Motor) |
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Common Base frame for Blower & Motor |
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Suction Filter |
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Suction Silencer |
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Discharge Silencer cum Interconnecting Piping |
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Set of V-Belts |
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V-belt Guard |
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Set of Drive & Driven Pulleys |
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Pressure Gauge |
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Non-Return Valve |
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Safety Valve (Dead Weight Type) |
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* Note: In case of Direct Drive, flexible coupling along with guard shall be supplied in place of V-Belts, V-Belt Guard, and Drive & Driven Pulleys. |
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| Standards Material of Construction |
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| Casing & side Plates |
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C.I.F.G. 260, IS: 210 |
| Rotors (Lobes) |
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C.I.F.G. 260, IS: 210 |
| Shaft |
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EN-24 (817 M40) |
| Gears |
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EN-353 (815 M17) duly Hardened and Ground. |
| Bearings |
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SKF / ZKL Make (Imported) |
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| Working Principle |
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Rotary twin lobe blowers / compressors follow the well-established principle of the roots-type machine. Operation is both simple and effective. Two 8-shaped rotors / impellers, mounted on parallel shafts and contained within the casing rotate in opposite directions. The shape of the impellers is such that a small accurately gauged clearance is maintained at all times between the impellers and the casing. As they rotate, air is drawn into the space between the impellers and the casing, where it is trapped as the tip of the impellers passes the edge of the inlet opening.
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Continuing its rotation, the opposite tip of the impeller passes the edge of the outlet opening and the trapped air is pushed through the outlet into the air line. This action is repeated twice for each revolution of the impeller, or four times for each revolution of the drive shaft, For each size of compressor a calculated amount of air moves at any given speed and pressure. This makes it simple to select the speed at which the blower / compressor should operate to supply the required volume of air. |
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