Filtration technology for Clean Air, Safe Workplaces, and Stable Processes
Professional filtration technology is a central component of modern production, workshop, and machining processes. Wherever welding, grinding, cutting, blasting, soldering, mixing, dosing, or other industrial applications generate dust, smoke, aerosols, chips, or gaseous contaminants, a properly designed extraction and filtration system ensures controlled airflow and reliable separation.
In this category, you’ll find solutions for localized extraction directly at the source, area-wide extraction via extraction tables, extraction walls, and panels, as well as central and mobile filter systems for a wide range of airflow rates and types of pollutants. The product range is complemented by fans, high-vacuum extraction, exhaust extraction, control and monitoring components, ATEX models, and accessories for installation, expansion, and maintenance.
The right filtration technology protects employees, machinery, and workpieces, reduces deposits in production, and helps maintain consistent process quality. At the same time, energy consumption, maintenance costs, and downtime can be significantly reduced through a design tailored to specific needs.
Your Benefits with Professional Filtration Technology
✅ Capture of dust, smoke, aerosols, and gaseous contaminants
✅ Protection of employees, machinery, and production areas
✅ Cleaner work areas and less dust buildup
✅ Improved process reliability and reproducible processing results
✅ Modular systems for individual workstations and central facilities
✅ Energy-efficient airflow thanks to demand-based sizing
✅ Extensive expansion, control, and monitoring options
✅ Solutions for potentially explosive atmospheres in ATEX-compliant designs
What are the different areas of filtration technology?
Depending on the application, type of contaminant, and workplace layout, different extraction and filtration systems are used. For clearly defined emission sources, local exhaust systems with extraction arms, extraction hoods, or special extraction elements are suitable. For large-scale operations, extraction tables, extraction walls, and panels are used. Mobile extraction units offer flexible solutions for changing workstations, while central filtration units can serve multiple machines or work areas.
Fans generate the required flow rate and negative pressure. High-vacuum systems operate with lower air volumes at high negative pressure and are particularly suitable for on-tool extraction, hose systems, and industrial vacuum cleaners. Control systems, variable frequency drives, and sensors ensure that systems are operated in a demand-driven, energy-efficient, and monitored manner.
| Application |
Appropriate Solution |
Typical benefit |
| Welding fumes directly at the source |
Source extraction arm or mobile extraction unit |
High capture efficiency with low air consumption |
| Grinding, Deburring, and Polishing |
Extraction table, extraction wall, or filtration unit |
Wide-area capture of dust and sparks |
| Multiple stationary workstations |
Central filtration unit with piping |
Shared Supply and Centralized Maintenance |
| Changing work locations |
mobile extraction unit |
Flexible use without a permanent installation |
| On-tool extraction |
high-vacuum extraction |
Small hose cross-sections and high negative pressure |
| Vehicle exhaust emissions |
Exhaust extraction with hose, funnel, or rail |
Targeted capture directly at the exhaust |
| Explosive dusts or gases |
ATEX-compliant filtration and extraction technology |
Design for defined hazardous areas |
Choosing the Right Filtration Technology
Effective extraction always begins at the point of origin. The closer an extraction element is positioned to the emission source, the lower the required flow rate can be. Therefore, it should first be determined whether the contaminant is generated at a specific point, over a broad area, or near a tool. Subsequently, the air volume, negative pressure, duct routing, filter medium, and cleaning method are specified.
It is also crucial to determine whether dry dust, welding fumes, oil mist, sticky particles, sparks, hot gases, or explosive substances need to be captured. Not every filter system is suitable for every application. The type of material, particle size, dust volume, operating time, and desired recirculation of the cleaned air must also be taken into account.
Key Considerations for System Design
✔ Type of contaminant and particle properties
✔ Source and required capture area
✔ Required flow rate or vacuum
✔ Simultaneous operation of multiple extraction points
✔ Pipe diameter, pipe length, and pressure losses
✔ Filter media and cleaning methods
✔ Sparks, heat, moisture, or sticky substances
✔ Requirements regarding noise, energy consumption, and installation location
✔ Recirculating air operation or exhaust venting to the outside
✔ Potential ATEX requirements and explosion protection measures
Source extraction or area-wide capture?
Source extraction is particularly efficient when smoke, dust, or fumes are generated at a clearly defined location. Extraction arms, hoods, and extraction slots are positioned as close as possible to the source. This allows for high capture efficiency to be achieved with comparatively low airflow.
For large-scale or varied work, area-wide extraction is often more practical. Extraction tables capture particles from below, while extraction walls and panels draw contaminated air to the side or rear. Such systems offer greater freedom of movement and are suitable for grinding, welding, cutting, and machining stations, among other applications.
Mobile or central filtration unit?
Mobile extraction units are quick to set up and can be moved flexibly between workstations. They are particularly suitable for individual workstations, changing applications, or areas where there is no permanent piping system.
Central filter systems serve multiple extraction points or machines. They provide centralized filtration, centralized dust discharge, and often extensive control options. Planning is more complex, but for larger systems, this can offer significant advantages in terms of maintenance, energy consumption, and workplace design.
Filter Media and Cleaning
The choice of filter media depends on particle size, dust type, temperature, humidity, and chemical properties. Cartridge filters offer a large filter area in a compact space and are frequently used for fine, dry dusts. Bag filters are suitable for high dust loads and rugged industrial processes. Multi-stage separation and coalescence systems are used for oil mist and aerosols.
Depending on the system, cleaning is performed manually, mechanically, or automatically using compressed air pulses. Effective cleaning keeps pressure loss low, extends service life, and stabilizes extraction performance.
Fans, Airflow, and Energy Efficiency
The fan must deliver the required flow rate despite the resistance of extraction elements, piping, and filters. Therefore, considering only the maximum airflow rate is not sufficient. The decisive factor is the available operating point, which is determined by the flow rate and pressure.
Variable frequency drives, automatic dampers, and demand-controlled systems can significantly reduce energy consumption. Especially when there are multiple extraction points, it is worthwhile to supply only the amount of air that is actually needed. At the same time, noise levels, filter loading, and heat loss are reduced.
Filtration Technology for ATEX Areas
In the presence of flammable dusts, gases, or vapors, it must be determined whether an explosive atmosphere could form. In such cases, a standard extraction system is not sufficient. Extraction elements, fans, filters, grounding, pressure relief, check valves or decoupling devices, and electrical components must be selected in accordance with the safety concept.
The ATEX compliance of individual components does not replace an application-specific risk assessment. The zone, substance data, minimum ignition energy, dust explosion characteristics, and system layout must be taken into account in the planning process.
Typical Applications
✔ Welding Shops and Metal Fabrication
✔ Grinding, deburring, and polishing workstations
✔ Laser, plasma, and oxy-fuel cutting systems
✔ Surface Treatment and Blasting Technology
✔ Wood, plastic, and composite material processing
✔ Automotive repair shops and test stands
✔ Chemical and pharmaceutical processes
✔ Food and Powder Processing
✔ Laboratory, soldering, and bonding workstations
✔ Machine exhaust systems and centralized workshop solutions
Frequently Asked Questions About Filtration Technology
What is industrial filtration technology?
Industrial filtration technology encompasses systems for capturing, conveying, and separating dust, smoke, aerosols, chips, gases, and other airborne contaminants. This includes extraction elements, piping, fans, filters, control systems, and dust discharge systems.
Which extraction technology is suitable for welding fumes?
For individual welding stations, extraction arms or mobile welding fume filters are often particularly suitable. For large workpieces or multiple workstations, extraction walls, shop-wide solutions, or central filter systems may be appropriate.
How close does the extraction system need to be to the source of the dust?
Generally, as close as possible without hindering the workflow. As the distance increases, the capture efficiency decreases significantly and the required flow rate increases.
What is the difference between flow rate and negative pressure?
The flow rate describes the volume of air being transported. Negative pressure is required to overcome the resistance of hoses, pipes, filters, and tools. Low-vacuum systems typically operate with high flow rates, while high-vacuum systems operate with low flow rates and high negative pressure.
When is an extraction table a good choice?
An extraction table is suitable for tasks that generate dust, sparks, or smoke over a large area and can be captured from below or from the rear, such as grinding, deburring, welding, or cutting.
When should a central filtration unit be used?
A central system is recommended when multiple machines or workstations need to be extracted simultaneously, when centralized maintenance is desired, or when large volumes of air must be processed continuously.
What type of filter is suitable for fine dust?
Cartridge filters are used for many fine, dry dusts. However, their specific suitability depends on the type of dust, temperature, humidity, dust load, and potential explosion hazard.
How often do filters need to be replaced?
The replacement interval depends on the filter area, dust volume, cleaning frequency, and operating time. An increase in differential pressure or a decrease in suction power may indicate that a filter replacement or maintenance is necessary.
Can purified air be recirculated into the workspace?
This depends on the contaminant, the filter performance, and the applicable requirements. In suitable applications, recirculated air can save energy. For certain hazardous substances or insufficient residual dust separation, exhaust air must be vented outdoors.
What is automatic filter cleaning?
During or after operation, filter elements are automatically cleared of adhering dust, often through pulses of compressed air. This helps keep pressure drop and air flow more stable.
How can the energy consumption of an extraction system be reduced?
Through source-based capture, properly sized piping, leak-tight systems, cleaned filters, demand-controlled dampers, and variable-speed fans.
When is high-vacuum extraction used?
High-vacuum extraction is suitable for on-tool extraction, small hose diameters, industrial vacuum cleaners, and applications where dust needs to be captured directly at the tool where it is generated.
What precautions should be taken regarding sparks and incandescent particles?
Depending on the application, spark pre-separators, appropriate piping, clearance distances, temperature monitoring, or special filter designs may be required. Incandescent particles must not be allowed to enter flammable filter materials uncontrolled.
When is ATEX filtration technology required?
When flammable dusts, gases, or vapors can form an explosive atmosphere. The need for this arises from the risk assessment and zone classification.
Can an existing extraction system be expanded?
Many systems can be expanded with additional extraction points, larger fans, filter modules, control systems, or piping. However, before any expansion, the air flow rate and pressure reserve must be checked.
What role does differential pressure play?
The differential pressure indicates the resistance of the filter or the system. Rising values may indicate filter loading, clogging, or an increased need for maintenance.
What information is needed for the design?
Key factors include process type, contaminant, material, number of workstations, extraction method, operating time, duct routing, installation location, desired return air, and any ATEX requirements.
Discover Related Categories
✔ Source extraction for direct capture at the source
✔ Extraction tables for grinding, welding, and machining stations
✔ Extraction walls and panels for large-area capture
✔ Filtration units for centralized and stationary applications
✔ Mobile extraction units for changing workstations
✔ Fans for flow rate and negative pressure
✔ High-vacuum extraction for on-tool extraction
✔ Exhaust extraction systems for workshops and test stands
✔ Control & monitoring for efficient plant operation
✔ ATEX solutions for potentially explosive atmospheres
Advice on the Right Filtration Technology
The right solution always depends on the application, the contaminant, the workplace, and the operating conditions. When making a selection, you should consider not only the filter area and air flow rate, but also the entire system, including the capture system, ductwork, fan, filter, control system, and dust discharge. We can help you select a technically suitable and cost-effective filter solution for your specific application.
