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Capture Elements as the Key to Effective Extraction
A filtration unit can only capture pollutants that have been reliably captured beforehand. The shape, size, and position of the capture element therefore influence the capture efficiency, the required air flow rate, and the energy consumption of the entire system.
In this category, you will find
✔ Spot nozzles and capture elements
✔ Hoppers and extraction hoods
✔ Extraction slots for linear sources
✔ Extraction panels for larger areas
✔ Machine and process connections
✔ Transitions and Connectors
Which entry type is appropriate?
Point sources can be captured using a small nozzle or a funnel-shaped hood. Extraction slots are suitable for linear processes, while panels or partially enclosing hoods are suitable for larger areas. For machines, capture should take place as close as possible to the process or within an existing enclosure.
Distance and Transport Speed
Outside an open extraction opening, the air velocity decreases sharply with increasing distance. At the same time, when the air in the hose and pipe network is laden with dust, a sufficient transport velocity must be maintained to prevent particles from settling.
Typical Applications
✔ Welding, Soldering, and Bonding
✔ Grinding, Polishing, and Deburring
✔ Dosing, Mixing, and Decanting
✔ Machine and on-tool extraction
✔ Laboratory, testing, and repair stations
Common Mistakes
✔ Detection too far from the source
✔ The form does not match the source form
✔ Natural text flow is not utilized
✔ The connection diameter and air flow rate are not matched
✔ Turbulent flows and maintenance are underestimated
Integration into the overall system
The capture element, hose, piping, filter, and fan must be considered as a single unit. If the collection area is enlarged or the piping route is extended, the actual flow rate can decrease significantly.
FAQ
Is a large hood generally better?
No. A larger area usually requires more air. A smaller, properly positioned extraction point is often more efficient.
When is a nozzle appropriate?
For a small, clearly defined emission source and a short distance.
When is an extraction slot useful?
For long or line-form sources.
Can a capture element be retrofitted?
Yes. The existing flow rate, connection diameter, and pressure reserve must be checked.
Design the data entry process appropriately
Information on the process, contaminant, source type, working distance, connection diameter, and available air flow rate will help ensure a reliable selection.
