Studies have demonstrated that the filter may be suitably protected using devices compliant with ATEX 94/9/EC and EN 1127-1. The user will be responsible in accordance with 99/92/EC (ATEX 137) if such protective devices are not ordered and/or installed.
The AIRALT Ex is a very high efficiency dry powder filtering machine. It is specifically designed to work in environments where high explosion protection is required in accordance with ATEX 94/9/EC.
Its necessary high structural resistance is the result of FEM (Finite Element Method) analysis design and complies with UNI EN 288-4 specifications for welding processes and consistency of the project complying with 97/23 (PED) rule. The elevated design and production standards implemented by Coral S.p.A. have been maximised to develop a standard model (with Pred=1barg) and a special version (with Pred=2 barg). AIRALT Ex filters can be used in the presence of class ST3 powder thanks to their excellent mechanical resistance to excessive pressure. Used in combination with explosion detection and suppression systems, AIRALT Ex is the best that the filtering market can offer today in terms of technology and safety.
The filter Venturi consists of two basic elements:
the Venturis where the contact phase between liquid and the air to be scrubbed is produced.
A cyclone separator where the separation of air and droplets that captured dusts occurs.
Dusty air, drawn by an high pressure fan, passes through the ven-turi orifices where it undergoes a substantial increase in speed while the water, recirculated by a pump, is introduced in the throats. The rapid acceleration of the air causes the atomization of water into millions of fine droplets that captured the pollutant dusts. The mixture of dusty air and water is introduced tangentially in the cylindrical body of the separator, in which spiraliform movements take place. The centrifugal force pushes the water droplets against the wall surfaces, while the scrubbed air is released upwards. Depending on the incoming pollutant substance an adequate clea-ning/filtration system must be used to keep the water inside the tank in good conditions. This solution will keep a functional system with steady scrubbing over time.
Inside the soundproof frame the fan, the hydraulic system and the filter for the reciclated water.
Are placed while the control board is placed out of the machine.
This filter is suggested in production processes that produce dusts undissolvable in water (metals, Compounds, resins, inerts) or that produce burning parcicles that could generate fires or explosions in the dry filters.
In case it is necessary to absorbe dissolvable dusts or dusts gene-rating aluminothermy cases (aluminum for instance), the use of Venturi has to be studied with our Techncial Dept in order to calcu-late the application with the suitable optional devices.
Evolution: the Evolution no-smoke self-supporting suction arm represents the best technical solution for the suction of welding smoke, gas, vapors, aerosol, oil fumes, dusts, etc.
Compliance with the law: the Evolution no-smoke has been designed and built in full compliance with current laws relating to the safety of the place of work and the removal of hazardous fumes and polluting substances from the working environment.
CORAL SPA manufactures industrial fans and blowers, also ATEX certified . Its production range is among the broadest on the market and covers the most diverse fields of application with specific solutions for every single customer requirement. To give a better idea of the wide range of products made by the company, suffice it to say that this comprises over 20 series of fans and aspirator, each available in a variety of models and sizes with fan wheel diameters between 20 cm. and 2 meters. The company is also able to manufacture special fans for high temperatures, using a selection of different materials like AISI stainless steel, 304 or 316, or wear proof steel or Cortex. The entire production cycle is performed within the company, from design to assembly. This ensures total quality control along the whole production line. Each part and every weld is controlled by our quality department, this providing a guarantee of long years of perfect fan operation.
The “ZINCOCAR DF” model series of sanding booths has been designed according to versatility, modularity and efficiency criteria.
The cabins are completely constructed in panels of galvanized sheet (painted on request) iron bolted to one another.
The operating procedure of the sanding cabin is simple and effective and is clearly illustrated in the diagram.
A vacuum is created via the soundproofed centrifugal fan mounted on the roof of the cabin. This vacuum forces the air to circulate driving the dust through cartridge filters without dangerous leakage into the actual environment.
The air, perfectly purified, is ejected by the centrifugal fan the characteristics of which are such as to guarantee high speed suction of the area in accordance with exhisting regulations.
The cabin is also equipped with a complete cyclic programmer for the automatic cleaning of the filtering cartridges by compressed air.