Pressure belt filters

FAUDI Belt filters

Pressure belt filters (DBF)

Pressure belt filters are ideal for cleaning cutting, grinding and rolling oils, emulsions and aqueous solutions. Our filtration solutions significantly increase the cost-benefit efficiency of your production.

By using FAUDI pressure belt filters for the treatment of your cooling lubricants, you can significantly increase their service life, close production cycles and achieve higher surface qualities.

Thanks to its modular design, our pressure belt filter can be optimally customised to your application. Depending on the material to be processed and the filter material used, the separation range is between 30 and 100 μm. Filter finenesses of up to 10 μm are possible thanks to the optional precoating with additional filter aids.

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How does a pressure belt filter work?

The pressure belt filter is a fully automatic cooling lubricant filter, which consists of two chambers, the upper and the lower box. The dirt chamber is the upper part of the pressure belt filter and is divided from the clean side consisting of the lower box by a slotted screen on which the filter fleece or endless belt rests. Two flap openings are located on the front side of the upper box, which are opened and closed pneumatically via toggle joints. These openings are required for dirt discharge. During filtration, the openings are closed and the filter belt is fixed by an internal lifting beam.

Filtration

Filtration takes place discontinuously via the filter pumps, which feed the upper chamber of the pressure belt filter from the dirt tank of the plant via the connecting pipelines. The contaminated liquid flows through the slotted screen and the filter belt. In the process, dirt particles are separated from the filter belt and a filter cake builds up. This filter cake retains increasingly finer dirt particles. The cleaned medium runs out of the drain at the bottom box in free falls into the clean tank.