Central Smoke and Dust Purification
Central smoke anddust purification is an important way to keep dangerous fumes and particles away from sensitive electronics. These systems work by circulating air and collecting dust, sand, smoke and other contaminants in a filter.
Breathing these fine particles can irritate your lungs and increase the risk of heart disease in people with existing heart conditions. It can also cause bronchitis and asthma in those who have these respiratory diseases.
WeldFil Welding Smoke Extraction Units
Welding fume extraction systems are essential for protecting welders from harmful toxins that are released during welding. The systems are designed to capture the harmful fumes at the source to prevent them from spreading through your plant and exposing other workers.
The type of welding process that you use will determine the amount of toxic fumes generated. For example, globular GMAW produces more fumes than spray or pulsed welding processes. Therefore, you will want to choose a filter that is rated for the amount of fumes that your welding processes produce.
Whether you select an ambient or source collection system will also dictate how your welding fumes are extracted from the work area. A facility that has many weld stations will central smoke anddust purification find it convenient to have a point-of-use layout where one extractor is connected to each welding operation or station.
If you choose an ambient extraction system, you may be able to set up the equipment and be up and running in a matter of minutes. The unit arrives ready to plug in and equipped with fork truck slots in the base, so it can be easily moved around your workshop to where it is needed.
If you need a more permanent solution, consider a central fume extraction system engineered to accommodate your specific needs. These systems are typically designed to support more than one welding gun, allowing you to provide your welders with a dedicated exhaust port for each torch they use. These units feature higher powered motors and larger filters that can handle the increased demand of more welding guns. Some of these systems can even be configured to support multiple welding robots or welder workstations.
Blended Paper Media Filters
A filter medium is the material that is used in a filtration system to capture dust and other contaminants. The selection of the most appropriate and economical permanent filter fabric for a specific application is an important design consideration. Barnes International can work with you to understand your contaminant size, shape and physical properties to make recommendations for the best permanent or disposable filter media solution.
We offer a wide range of cellulose and synthetic cloth-based filter media in various thicknesses and basis weights. Cellulose fiber is made using the wetlaid process and offers high permeability, low initial pressure drop, good chemical resistance, abrasion resistance and a long life span. Adding polyester material to cellulose provides enhanced filter performance for applications that require a more durable and humidity resistant filter media.
Our cellulose blend filter media offers 80/20 cellulose and polyester material for applications that require a more robust and humidity resistant filtration material. This blended media can reduce airflow restriction in operating conditions with higher humidity, saving energy costs while providing a long filter life.
During a testing process, one single layer and composition dual layers filter media were made by laboratory paper machine using recipe BP 251 (TECHPAP SAS, France). The specific fiber blend of wire side layer and top layer were modified to improve the physical properties and filtration performance. The result showed that the composition media’s thickness and air permeability were higher than single layer medium at same base weight level, the terminal pressure drop during dust injection increased 37.0% and the dust hold capacity increased 34.7%, meeting the original equipment manufacturer’s requirement.
Surface Loading Filters
Surface filtration involves catching the particles of interest in the flow of fluid across the surface of a porous medium. This is often done in rapid sand filters (see image below). The particles are caught by interception as they come into contact with the surface of the filter medium, which is often modified to enhance coagulation or entrapment. Coagulation is enhanced by a range of factors such as particle size, electrostatic forces within the electrical double layer, and van der Waals attractive forces that act between the particles at short distances.
In depth filtration, contaminants travel through a labyrinth of holes and spaces between the individual fibers or grains of a non-woven filter medium. This type of filter is commonly used for drinking water filtration where high efficiency, low flow resistance and dirt-holding capacity are important requirements.
PCO (Photocatalytic Oxidation) air purifiers use UV light to destroy viruses, bacteria, fungi, mold and VOCs in the air. They have been shown to reduce indoor asthma, allergies and other respiratory conditions. This method of air filtration requires little maintenance and is safe for the environment. The EPA recommends that these types of air cleaners be placed in areas that are occupied by a large number of people for maximum protection from harmful organisms. They also offer the highest level of odor and VOC removal.
HEPA Filters
HEPA (high-efficiency particulate air) filters are medical-grade, and they can capture harmful particles that range in size from 0.1 to 0.3 microns, including mold, dust mites, bacteria, aerosolized viruses and central smoke anddust purification other airborne pollutants. You can find true HEPA in most freestanding air cleaners and vacuum cleaners that are sold today, as well as in some home appliances like stoves and refrigerators. Some manufacturers may try to pass off less-efficient filter types as “HEPA” by using misleading terms like “HEPA-like” or “HEPA-style” in their advertising, but they still don’t meet the rigorous standards of a genuine medical HEPA filter.
HEPA filters are a dense forest of tangled fibers, usually folded into pleats to increase their surface area and the amount of debris they can trap. When air is blown through the filter, the vast majority of particles are entangled in the fibers by three mechanisms: diffusion, interception and impaction.
The most common use for HEPA filters is to remove allergens from the air. Airborne pollen, mold spores and pet dander are common sources of allergy symptoms, and these allergens can also trigger asthma attacks. Most HEPA filters are designed to eliminate these allergens as well as their odors.
