FDBusiness.com

The Hydrohansu-type rotating cleanflow magnet recently introduced by Goudsmit Magnetic Systems BV of Waalre (NL) was developed in collaboration with producers of top-tier food products. The driving force was a pressing need for removal of very fine iron (Fe), AISI 304 and 316L particles in the dairy industry, for products such as baby food, yet it is also suitable for use in the sugar and lactose industry.

Rotating magnets prevent the accumulation of fatty powders on the magnetic bars and guarantee a high level of separation. The new magnet system is hygienically designed in accordance with the EHEDG guidelines and can be cleaned semi-automatically.

Hygienic Design

The single-piece, hydroformed housing is made entirely of grade 316 stainless steel and therefore has no dead ends, sharp corners or welded seams, which prevents bacterial growth. The complete system has a high quality surface finish (Ra ≤ 0.6 µm). The magnet rotor has pneumatically operated magnet bars, is mounted in the door and rotates on a bearing. To prevent product from entering the space between the rotor and the housing, it is fitted with a removable labyrinth air lock. A continuous, clean stream of air (+0.2 bar) feeds that air lock and blows from the inside towards the product chute. The use of rotating pneumatic magnet bars ensures that the powerful magnetic value (11,500 gauss) is in direct contact with the product. Tests have shown that in addition to separating Fe (99%) a high percentage of the AISI 304 and 316L particles are also separated.

The newly designed, completely hygienic Hydrohansu magnet was made in collaboration with food product manufacturers in accordance with EHEDG guidelines and separates Fe, AISI 304 and AISI 316L contaminants from products such as dairy products and baby food.

Cleaning

The semi-automatic cleaning process can be performed during a production stop. After the rotor is released and pulled out manually, compressed air internally shifts the magnet packs to the cleaning position. This provides a quick, easy and safe cleaning method in which the metal particles are carried away. Moreover, the Hydrohansu – in comparison to previous versions of rotating magnets– no longer has any delicate loose parts. This results in a high level of efficiency and user-friendliness. Sensors ensure that all these steps can only be performed in the correct order.

Magnetic Filter For Liquids

The EHEDG magnetic filter is composed of Neoflux® (Nd-Fe-B) magnets that provide an efficient separation of iron particles from 5µm, weak magnetic particles and even iron dust from liquids like chocolate. It generates a magnetic field of a maximum of 10,700 Gauss (+/-5%) on the. This has been specially developed for the food & confectionery industry The entire system is made of stainless steel 316, smoothly finished (Ra≤0.8µm ), and complies with the EHEDG standard; the highest standard in the field of food safety.

Cleaning

Magnetic separators remove very fine Fe as well as AISI 304 and AISI 316L particles from powders and liquids in the food industry.

The removal of the captured metal particles done in 3 ways: manually, whereby the operator can easily pull apart the magnetic bars covered by an extractor; manually + pneumatically, whereby the cleaning is done automatically and, according to the most recent method, pneumatically + CIP (Cleaning In Place), whereby in addition to cleaning also the rinsing of the magnetic bars is done automatically.

EHEDG

Recently, Goudsmit has become the first magnet supplier to be admitted to the European Hygienic Engineering & Design Group. The EHEDG is a consortium of installation suppliers, companies in the food industry, research laboratories and national public health bodies that aim at the highest standards of food safety. EHEDG sets standards for avoiding contamination or the growth of damaging micro-organisms, cleaning and decontamination capacity, and the use of materials and surface finish. It tests the product designs in the field of cleaning, sterilization and bacteriological impermeability. Only those firms that comply with the standards set are eligible for the EHEDG certificate.

For more information contact Goudsmit Magnetic Systems on Tel 040 2213283, E-mail pe@goudsmit.eu or visit www.goudsmitmagnetics.com.