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GLOSSARY OF EQUIPMENT 114-115 the acceleration belt and under the head drum. Depending on the scanner reading, the valve corresponding to each type of material will open, blowing pressurised air to separate each identified type of material from the other types of material. Some units have two valve blocks. These are generally placed at the end of the acceleration belt, on the bottom part, although in plants where the input material to the optical separators has a high percentage of organic matter content, they can be placed at the top to prevent malfunctions due to valves getting dirty. It is also possible to place one on the top and the other on the bottom. CPU • Compressor unit: unit in charge of blowing air to actuate the valves that select the materials. • Flight box: set of chutes and guards at the outlet of the acceleration belt, used after blowing to collect the selected and unselected material in different channels. • Electromagnetic sensor: placed under the acceleration belt, which receives the signal from the transported metals (ferrous and non-ferrous), processes it in the software and issues instructions to the valve block for sorting. This system complements the unit although it is strictly speaking not an optical but rather an electromagnetic separation. 1 2 NON SELECTED MATERIAL SELECTED MATERIAL 2 Flight box Aceleration belt Optical sensor Lighting system Valve block SELECTED MATERIAL 1 3 3. Dual-valve optical separator. LIGHT WEIGHT PACKAGING SORTING PLANTS


Libroplantasingl
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