The advantages of efficient waste handling systems cannot be ignored: labour costs for clearing and preparing trim can be kept to a minimum. Automatic collections at source frees valuable production space, minimises potential safety and fire hazards and allows machines to operate to their maximum capacity.
The waste is a nuisance in the production area becoming costly, time-consuming, and a danger. Delta NEU develops the Chopper Fan system. It provides the suction for automatic collection at source. The waste is then drawn through the Chopper Fan and reduced to small pieces before it is conveyed to the separator.
Fully automated sequenced systems result in substantial energy savings, operating only when required and recycling warm, filtered conveying air back into a building for space heating. A complete solution.
...
Example of this Application at One of our Customers
In the scrap extraction system, a Chopper fan® provides the airflow through a ducting network to move the scrap waste from the pick-up points to the centralised collection in the baler room where the loose material is compressed into bales for cost-effective transportation to the recycling process. The ducting network is carefully designed to balance the airflow between the numerous collection points maintaining airspeeds in a tightly controlled range to ensure effective scrap extraction at every point.
In the baler room, the scrap is separated from the conveying air in an AMSP separator through a perforated plate screen. The scrap material then discharges from the base into the baler feed arrangement and the air is drawn from the clean side of the screen using a balance fan and discharged. The balance fan ensures the material feeding into the balers does so without pressure which would blow waste and dust into the surrounding area.
The Beverage Can production starts at the cupping process, the first stage of the process where shallow cups are cut and formed from a coil of metal. From this process, a waste offcut scrap lattice is produced which can be extracted from the cupper at high speed for centralised collection and recycling.
As a second stage in the bodymaker process, the top edge of the can body is cut by the trimmer to provide an exact can size and clean edge for the susequent fitting of the can end. This process produces waste trim rings which are extracted directly for centralised collection and recycling in the same scrap extraction system as the lattice from the cupping press.
At the exit from the bodymaker, the can is clean, yet unprinted, and wet from the lubricant. Beverage cans are used in the food industry and the quality standards are very exacting and inevitably there are reasons that some cans are rejected throughout the process and at this point from the bodymaker is one. However, these whole cans can be extracted from this, or a centralised area, once again for conveying to the recycling process.
As a subsequent stage in the manufacture of the finished decorated can body, it will be printed to the customer's design. At this stage further reject cans may occur due to the very high-quality standards demanded. However, as a decorated can, it is usually recycled separately, to those above, due to the printed surface coating. As the cans are conveyed through the extraction system, tiny print surface particles may be released into the conveying air and must be filtered to remove the dust.
