Metallic & Non-Metallic Dusts
Metallic & Non-Metallic Dusts: Collection Methods
Arms
These compose a series of jointed tubes the weight of which is supported either internally or externally by a spring counterbalancing mechanism. As a result the arm can be articulated to any position and self support to hold an infinite number of positions within its operating envelope. Various lengths and diameters of arms are available to suit particular applications and are also available is stainless steel for use within corrosive or pharmaceutical environments. Arms with external support mechanisms provide uninterrupted airflow within the arm and are particularly suitable where periodic internal cleaning of the arm is required.
Canopies
Canopies are normally located directly over the process generating the fume and of a size sufficient to cover the complete working area. Effectiveness is dictated by the face velocity generated at the underside of the hood as too low an air speed will result in poor scavenging of the fume. Canopies work best in heat related applications where the heat generated causes fume to rise into the canopy aperture.
Grilles
A grill type extraction point provides fixed location ventilation and can be supplied in various sizes with or without integral flow control dampers to balance out the required airflows across the system. Grilles can be used to provide both background and location specific ventilation are normally used to remove hydrocarbon vapours.
Dry Back Spray Booth
This is ofton also called a Low Cost Spray Booth. These kind of booths are more popular in small workshops & research and development facilities etc. These booths consists of baffles to collect 80 to 90 percent of the dry over spray dust. This thus leaving the chamber behind clear of wet paint fumes and thus protecting the axial fan impellors and workings.
Downdraught Benches
AES Downdraught Benches are of extremely robust construction and have been designed for sanding, grinding and finishing applications. The bench takes dust and fumes away from your workspace by drawing them down through the worksurface into either:- 1) An internal filter within the bench and returning clean air to the room making it a stand alone unit or 2) A centralised system with multi benches ducted back to one central filtration and fan unit which vents to atmosphere depentant on application.
Collection Booths
Collection Booths provide protection for the surrounding factory areas and are specified when operators require access to all parts of large workpieces. Booths can be manufactured to customers specific requirements. All booths are supplied with ductwork connection points at the rear and are available with wet or dry filtration units. Multiple booths can be connected to one centralised extraction unit see installtion image for example.
Push / Pull
A `push / pull` system is a method of general filtration is deisgned to prevent accumulation of welding fumes within a workshop. It consists of ductwork provided with grilles, one or two fans and one or two filter systems. The ductwork is installed at the height of the welding fume layer (4 - 6 m). In this way the welding zone is `enclosed` by the ducting. At one side of the ductwork the air is extracted (`pull`) by the grilles, filtered and blown out ("push") through the fan by way of the grilles of the outlet duct. In this way a continuous air circulation is generated. The welding fumes are constantly extracted, cleaned and re-admitted into the work space enabling the background concentration of welding fume in the facility to stay below the legally prescribed level. A push-pull system can be installed as a U system or as a parallel system. A parallel system will be required to cover the entire welding zone within this facility. Benefits to this type of system are clearing large volume open areas of work space where 'at source' solutions either are uneconomical or difficult to achieve.
On Torch Extraction - (Hi Vac)
Hi-Vac capture and filtration of welding fume is a highly effective method of capturing welding fumes directly at source. It involves the use of a special type of welding gun (sold by many welding equipment resellers) or by the use of tool attachments. The fumes are extracted directly on the welding gun and filtered by a remotely located Hi-Vac filtration system.
Evaporative Cooling
Evaporative Coolers can be used for a myriad of different applications and have been used throughout Europe on projects ranging from large industrial applications such as cooling warehouses and factories to more public orientated tasks such as cooling garden centres, retail outlets, keeping classrooms cool and air cooling hospital waiting areas and through to commercial applications such as air cooling offices, cooling data centres and cooling server rooms.