We are selling a BRAMA Kobran KO40VS air classifier for the pre- and post-cleaning of various dry, free-flowing, and bulkable products. The air classifier operates using the product-air counterflow process and separates lighter components and impurities from the heavier product using an air stream.
The KO40VS model offered here is made of galvanized steel and is designed for a product-dependent capacity of 5 to 50 metric tons per hour. The intake area measures 650 × 400 mm.
Design and Operation
The product to be cleaned is continuously fed into the air classifier. Due to the inclined position of the air classifier, the product flows through the machine across the suction surface.
The suction surface consists of overlapping slats through which the suction air flows. The stair-step arrangement of the slats and the downward movement cause the product to be turned over as it passes through.
Based on the product-air counterflow process—or the resulting cross-flow principle—lighter components are carried away by the air stream. This allows, for example, dust, shell fragments, lint, and other light impurities to be separated from the heavier product.
The foreign materials carried out with the exhaust air can then be separated from the air stream using a suitable dust collector, such as a cyclone or filter.
Adjustment Options
The extraction rate and extraction area can be adjusted to the product being cleaned using the upstream and downstream adjustment dampers. The air is directed specifically through the product stream.
By properly securing the adjustment dampers, additional suction can also be applied to upstream or downstream conveying elements. This allows the air classifier to be used simultaneously for dust removal from adjacent conveying systems.
The required air volume depends on the specific product. Light products such as oats, for example, require a lower air volume, while heavier products such as corn require a higher air volume.
Technical Data
- Manufacturer: BRAMA GmbH
- Series: Kobran
- Type: KO40VS
- Machine Type: Air Separator / Air Cleaner
- Part Number: B11922-3
- Construction: Galvanized steel
- Capacity: 5–50 metric tons per hour, depending on the product
- Width: 480 mm
- Height: 580 mm
- Length: 1,015 mm
- Intake area: 650 × 400 mm
- Installation angle: 42° to 50°
Applications
The Kobran air cleaner can be used for pre- and post-cleaning of various dry, free-flowing, and pourable products. Typical products and applications include, for example:
- Grain
- Corn
- Granules
- Plastics
- Sands
- Products containing lighter foreign particles
- other bulk materials whose components differ in size, mass, or density
Air classifiers of this type are used in agriculture, grain processing, industry, and recycling technology, among other fields.
Installation and Integration
The Kobran air cleaner is generally installed at an angle of 42° to 50°. Due to its relatively low installation height, it can also be retrofitted into existing product streams.
Installation is possible, for example, in existing duct systems as well as before or after bucket elevators, screw conveyors, or trough chain conveyors.
Advantages
- Pre- and post-cleaning of various bulk materials
- Separation of lighter components and contaminants from the heavier product
- Adjustable extraction rate
- Adjustable suction area
- Variable, product-dependent performance
- Continuous product flow
- Suitable for various dry, free-flowing, and pourable products
- Can be retrofitted into existing systems
- Low installation height
- Additional suction of adjacent conveyor elements possible
Airflow
Ambient air is directed through the vanes inside the air classifier and through the product stream toward the exhaust fan. The exhaust air can then be cleaned in a dust collector, such as a cyclone or filter, or discharged to the outside depending on the system configuration.
For highly abrasive products, the dust separator can be positioned upstream of the exhaust fan. With appropriate airflow routing, the exhaust air can also be reused in a recirculating air system.
Condition and Scope of Delivery
The product is sold as shown in the pictures.
We reserve the right to make changes and correct errors in the technical data, specifications, and prices, and to sell items prior to order.