The formation of dust can only be completely avoided with a high technological effort. A more realistic scenario is to filter the dust that is created out of the air again. But how is that supposed to work and is it even mandatory or rather a nice add-on? We provide answers to the most pressing questions and give you an overview of how to find the right extraction system for your dust problem, what needs to be considered and what options there are for cancellation.
What is dust anyway?
What is actually meant when we talk about dust? Generally speaking, dust comprises solid particles that remain dispersed in the air for a certain period of time and do not fall directly to the ground. The dust can consist of both organic and inorganic substances.
Basically, dust can be divided into fine and coarse dust. This classification is also important for dust extraction. However, other parameters such as dust shape or particle size also play a role.
Why is dust hazardous?
Effective and fast dust extraction is very important, whereby fine dust is to be classified as significantly more dangerous than coarse dust. Particularly in the processing industry, dusts are so fine that they can easily be inhaled through the mouth and nose and pass through natural barriers such as mucous membranes. Thus, the dust particles penetrate deep into the lungs and can even reach the alveoli. A scratchy throat or a dry cough are still the more harmless consequences of dust-laden air. If the dust particles are not removed from the air by an extraction system, this can lead to chronic diseases such as so-called pneumoconiosis. Tumor formation or damage to other organs by nanoscale particles is also a possible scenario.
To determine the optimal dust extraction or chip extraction system, it is necessary to determine not only the nature of the dust particles but also their concentration and the air volume to be extracted. From small dust extraction systems and filter units to fully automatic hall ventilation systems, you will find the ideal solution for your needs with us.
In principle, all NOVUS products can be adapted to different emissions. Therefore, before the what, we ask the how. How exactly is the extraction to take place? Is there already a pipeline in place, are the space conditions rather cramped? Does the dust arise decentrally at different locations or are there fixed locations for the emission sources? Once questions of this kind have been clarified, the optimum extraction system can be found.
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Room extraction against fine dust during sandblasting processes
The filter tower in use for room extraction when processing high-strength steels
Efficient extraction of A-dusts during steel processing
What causes dust?
In industry, mechanical machining processes are usually the cause of dust: sawing, cutting, grinding, chipping, ... - in general, the comminution of materials raises a lot of dust. In order to correctly assess the danger posed by the respective type of dust and ultimately to be able to design the dust extraction system according to requirements, the specific properties of each type of dust must be taken into account. For example, an appropriate chip extraction system is also needed for particularly large particles such as chips.
Work where dust is generated
The human organism can be severely damaged by dusts. It is therefore particularly important to protect them. Regulations such as the TRGS, the Technical Rules for Hazardous Substances, provide a good basis for protecting the long-term health of colleagues and employees.
Dust can also damage machines, disrupt processes and cause shutdowns. Therefore, even in automated environments such as an enclosed robot cell, it should be removed by a dust extraction system. Only in this way can you be sure that your machines will last for a long time.
As important as the emission...
In addition to the pollution caused by grinding dust, for example, the local conditions are an important factor for the design variant of the extraction system. There are also a number of things to consider when it comes to chip extraction.
Dust extraction, for example, can be carried out entirely without an additional piping system. Such a decentralized extraction system is, among other things, a practicable solution if the workplace situations are changeable, the source of emission is not always punctual or if there is simply hardly any space in the production. In this case, the AIRTOWER as a plug & play device is an optimal solution that perfectly combines flexibility and performance.
... is the type of extraction
If dust is always released at the same places, direct extraction is often the best decision. With the AIRLINE central extraction system, grinding dust, chips, etc. can be extracted directly at the machine, robot cell or guiding machine and thus removed from the room air. If you already have a piping system or are planning one, the AIRLINE can be connected to it. It has been specially optimized for process-dependent production and can also be operated permanently without any problems.
THIS IS WHAT IS MEANT BY ALVEOLAR DUST
In most contexts, alveolar dust can be equated with the fine dust meant in everyday speech. Legal authorities often speak of A-dusts. This A-dust is also considered in the TRGS, among other things. The dust particles are respirable, can penetrate to the fine pulmonary alveoli and cause lasting damage.
THIS MEANS FIBROGEN
In medicine, substances are considered fibrogenic if they can trigger fibrosis. In pulmonary fibrosis, the lung tissue ultimately scars to such an extent that sufferers have noticeable problems breathing. Lung volume is significantly reduced. Effective dust extraction is therefore essential for fibrogenic dust types such as quartz, lime or artificial mineral fibers.
ABRASIVE DUSTS NEED SPECIAL CARE
Abrasive dusts are generated during grinding processes and pose particular challenges for the respective dust extraction system. The filter package must also be extremely resistant and at the same time provide a high degree of separation. A consultation will help to clarify the general conditions and requirements.
CAN DUST EXPLODE?
70 percent of all dusts are explosive. Dusts are considered combustible if they can be set on fire in deposited form by an external source. It becomes particularly dangerous if the burning dust creates a dust-air mixture as a result of a sudden stirring, e.g. a draught. This is explosive and thus a danger to life and limb that should not be underestimated. Therefore, it is all the more important that an extraction system sustainably removes the combustible dusts from the room air on the one hand. In addition, the dust extraction must be continuous and, above all, fast.
To prevent explosions from occurring within the extraction system, the dust extraction system must meet special requirements and comply with certain safety guidelines. For example, there must be no dangerous whirling up of dust even during filter cleaning. Arrange a consultation for this purpose, and together we will determine your needs-based design.