Product recovery, à la carte
The latest addition to the ProFi product line is the stand-alone filter system ProFi-Clean
The newly developed and patent-pending "ProFi – Clean" filter is easily installed by a clamp connector as a module on the milling chambers or Inlets/outlets housings of all Frewitt mills (OscilloWitt, HammerWitt, ConiWitt, and TurboWitt). Sieve mills in existing systems can be retrofit in a few simple steps. Numerous advantages set this filter system apart from others.
Low-pressure filling
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 (shown by the blue arrows in the drawing). The advantage of this method is that continuous, uninterrupted product filling is possible. The product is fed back into the process by means of the exceptionally efficient pressure surge cleaning.
Dust-free atmosphere
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 dust-free atmosphere corresponding to OEB level 3. The exhaust air escapes in a controlled manner via the filter (shown by the red arrows in the drawing), thus protecting the operator and the environment from contamination.
Various options enable a broad range of applications. For instance, stainless steel cartridges can be used for processes that demand higher mechanical stability, a Venturi system ensures reduced power consumption, and H13 class HEPA filters can be used when high quality is expected.
Compact and stand-alone
The filter system consists of the housing, the filter cartridge, and the compressed air and control unit, which is attached to the filter housing. This design allows the user to mount the unit on any new or existing Frewitt sieve mill. At this point we should mention that the HammerWitt is equipped with a connection for an ISO 2852-compliant DN 32 clamp as a standard feature.
Conclusion:
Frewitt took a bold step in a new direction that really paid off. They applied their expert sieve technology know-how to the development of a filter system that fulfills a critical need, namely the efficient recovery of costly products.
