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Goudsmit Magnetic Systems from Waalre recently developed an improved version of the rotating clean-flow magnet in collaboration with Friesland Campina Domo. The magnet removes very fine metal particles from whey powder, and due to its renewed dynamic seal it will also be dust-proof at an overpressure of up to 0.4 bar. Pressure in the filler pipe may increase during the filling of bulk bags. Overpressure that occurred resulted in leakage in the former situation. The magnet manufacturer solved this problem together with Friesland Campina Domo and made some practical improvements that make this version deployable for many purposes.
Technical details
Not only the seal was improved. The magnetic value was increased as well (Br value: 13,200 Gauss) and the magnets will also retain their strength at higher temperatures. The magnetic bars have a Lunac coating to prevent adhesion of the product. The design pays particular attention to the high FDA plus Ehedg requirements, and to the finish of the housing. The Ra value amounts to 0.2 for the bars, and 0.6 for the house. The entire unit is electropolished. The magnets move in a fully enclosed, rotating stainless steel pipe and trap metal particles from 35 micron. The rotation causes the magnetic bars to contact the product optimally and a better metal separation will occur. Another advantage is that the level of capacity increases, and the product cannot end up between magnet and sleeve during automatic cleaning. The whole is suitable for installation in ATEX Zone 1/2 D.
Besides application in the food and infant food industries, this magnet can also be used for other products such as cocoa powders or similar products in the food industry.
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