Central Smoke and Dust Purification
Central Smoke and Dust Purification
Central smoke anddust purification captures nuisance dust, combustible dust, fumes, and oil mist to improve working conditions and ensure compliance with laws and NFPA/ATEX regulations. We offer a variety of systems that provide clean air for improved working conditions.
Smaller dust particles hit the droplets and become encapsulated, while finer particles move around the droplets by Brownian movement (or diffusion). This helps to filter out submicron size particles.
High Vacuum WeldFil Welding Smoke Extraction Units
Especially in light welding work, it’s important to capture harmful fume pollutants at their source. This prevents them from entering the breathing zone of the welder and polluting the environment. The best way to do this is with high vacuum extraction.
Low vacuum welding fume extraction solutions often feature large ducts and extraction funnels that must be manually positioned above the weld point. These are inconvenient and often get in the way of the welder’s field of vision, making them less effective. High vacuum extraction systems, on the other hand, are small enough to be attached directly to the welding gun via a funnel or an extraction nozzle. This ensures that the pollutants are removed from the welding point as close as possible, thereby satisfying the new and stricter norms and regulations from the authorities.
A high-vacuum system also eliminates the need for a costly air makeup system since it can extract contaminants directly from the weld point. This saves energy and money while ensuring optimal welder protection and productivity.
Whether it’s an integrated extraction system or an external high-vacuum extraction arm, our premium welding fume extractors can be customized to meet your needs. Options include an adjustable vacuum chamber suction to optimize smoke extraction, gas flow and weld access, as well as a SilentFlow duct free silencer that reduces mechanical noise while increasing efficiency.
For combustible metal dust applications (like grinding, fettling, linishing, de-burring or polishing from metals such as Aluminum, Magnesium, Zirconium and Tantalum), wet collectors, also called scrubbers, are the best option for safe operation. These units mitigate the risk of explosions and fires by safely capturing combustible metal dust in a wet combination, or slurry, that is discharged from the equipment and away from the workers as clean air.
Like dry media dust collectors, wet scrubbers work by pulling contaminated air through an LEV system to draw it up through a series of engineered water streams or baffles to capture combustible metal dust particles in contact with the water droplets. A scrubber then slurries the collected slurry into a tank, where it is held for easy maintenance and disposal at regular intervals.
The types of slurry discharged from a wet scrubber depend on the central smoke anddust purification model, with equipment designs using spray nozzles, misters or cyclonic action to wet the dust as it is filtered. A wet cyclone scrubber, for example, uses water sprays directed radially outward to cool the gas and prevent reentrainment, while a RotoClone model utilizes a centrifugal force to combine collected dust with water into a dense mixture, or slurry. For added process safety, these units can be equipped with a control panel interlock and auxiliary vent fan for evacuating residual hydrogen gas after the machine is shut down.
Mist collectors are industrial-grade machines that remove airborne particles from industrial working environments. They are often used for metalworking applications in conjunction with cooling and lubrication processes, but can also be found in a variety of other manufacturing and production settings where air quality standards need to be maintained.
Mist and smoke contaminants produced by wet machining, grinding, turning, milling, drilling, and other industrial operations often pollute the work environment with harmful chemicals that can lead to skin irritation and respiratory problems. By implementing a mist collector, manufacturers can keep workers safe and avoid costly machine downtime.
When a mist collector is installed, the contaminants are extracted from the air stream and drained into a container for later disposal. The type of mist collector that is best suited for an operation will depend on several factors, including the power requirements and maintenance intervals required for the system.
A well-designed mist collector will feature a multi-stage filtration process. The first stage filters the mist to remove unwanted solid central smoke anddust purification particulates and entrain bulk liquids. It also agglomerates finer mist particles into larger droplets, allowing for more effective coalescing and drainage.
Many traditional mist collectors utilize centrifugal technology where a rotating drum intercepts the mist. The centrifugal force ejects the unwanted particles and forces them to impact the deflecting surface, where they are then forced into a drain tank and drained. These systems are fairly simple to maintain and offer an efficient way to collect unwanted mist.
Dust Collectors are used to filter air from facilities where dust is a major concern. These systems remove combustible dust particles before they can become explosive or catch fire. These systems are used for industries such as woodworking, mining, chemical processing, agriculture, pharmaceuticals, paper production, cement and rock products, metal fabrication and many more.
This type of system is typically made up of a series of fans and filters. The most common design of a dust collector is a baghouse. This is a dry fabric filtration system that uses a fan to create a vacuum that forces contaminants through a filter in a bag. Some systems use a shaker method to clear the filter while others use pulse jets of compressed air. Some systems will also produce an alarm when the filter is full.
Other types of dust collectors include cyclone separators. These are more effective at larger particulate size than a standard filter. They work by using centrifugal force to separate large debris from finer particles. Cyclone separators are commonly used in power plants, steel mills, smelters, coal-fired boilers and other facilities that process large quantities of material.
There are also a number of other styles of dust collectors that do not require ductwork. They are portable and collect dust, mist and fumes at the source. These units can be used to reduce contamination in production cells or in a downdraft table.