Frewitt, Granges-Paccot, Switzerland, has introduced the patent-pending ProFi-Clean filter which can be easily installed by a clamp connector as a module on the milling chambers or inlets/outlets of all Frewitt mills (OscilloWitt, HammerWitt, ConiWitt, and TurboWitt). Sieve mills in existing systems can be retrofitted in a few simple steps. Various significant design features set this filter system apart from others. 

Exhaust air at atmospheric pressure escapes from the milling chamber via the filter, which traps any product. To prevent product build-up on the filter, the exhaust air filter is cleaned by a time-controlled pressure surge. This approach ensures continuous, uninterrupted product filling. The product is fed back into the process by means of the exceptionally efficient pressure surge cleaning. Particles > 5μm can be filtered out, thus fulfilling the requirements for class M filters (BGIA) of DIN standard EN 1822 (H12). The high filtration efficiency results in a dustfree atmosphere corresponding to OEB level 3.  The exhaust air escapes in a controlled manner via the filter, thus protecting the operator and the environment from contamination. Various options provide for a broad range of applications. www.frewitt.com

 

 

Frewitt’s ProFi-Clean filter