For the filtration of higher throughputs Pressure belt filter of Leiblein

The pressure belt filter (PBF) is used for the filtration of liquids with the help of continuous-filter fabrics or filter fleeces. Compared to hydrostatically working filters, the pressure belt filter has the advantage that the filtration is performed at a higher pressure. In doing so, a higher throughput as well as a better drainage of the filter cake can be reached.

The filtration in the pressure belt filter takes place using a filter fabric made of plastic or with filter fleece, which is coordinated with the respective application In order to reach a higher filtration quality during the fine processing, the PBF can be e.g. aggraded with cellulose.

Filtering with pressure – technology made by Leiblein Functional principle of the pressure belt filter

The effluent is pumped from above to the upper chamber and distributed on the entire filter surface (❶). The dirt settles down on the filter belt / filter fleece and forms the filter cake (❷). The filtrate flows downwards to the lower chamber (❸). 

As the filter cake densifies, the flow resistance increases and the counter pressure increases in the filter chamber. When a limit value (end pressure) is exceeded the feeding is interrupted and regeneration is initiated.

Firstly, the remaining liquid is pressed with pressurized air through the filter belt/ filter fleece and the filter cake, through which it is drained. During the regeneration process the lateral flaps (❹) are opened and the belt with the filter cake is retracted, the dirt is removed (❺) and the clean belt is fed in again from the other side. Then the flaps close again and the filtration process restarts. When executed with an endless belt, the filter belt is cleaned additionally with a brush (❻) and a flushing device.

Pilot plants of Leiblein

Our products are available to rent for pilot tests. Due to our extensive rental park, we can put together complete test systems individually for your task.

High efficiency Benefits of the pressure belt filter

  • Drying the filter cake with pressurized air is possible
  • High throughput performance by pressure filtration
  • Device is low-maintenance, no user intervention necessary
  • Simple and robust construction
  • With the help of aggradation aid usable for fine filtration

Types and materials Designs of the pressure belt filter

The pressure belt filter can be used as an independent compact device or in connection with a central system. Depending on the medium, it can be equipped with an endless belt or filter fleece. 

The hinged belt filter is a smaller version of the pressure belt filter - for up to 60 m³/h throughput; for regeneration, the entire upper chamber is raised.


stainless steel 1.4301 / 1.4404
steel coated

Filter fleece

polyester, viscose, polypropylene


Filter belt


Alternative materials upon request

Do you have any questions about technical details?

We would be pleased to advice you and will gladly send you more information like type series and measurement sheets of the pressure belt filter.

Versatile applications Areas of applications of the pressure belt filter

Further information Downloads about the pressure belt filter

Pressure belt filter brochure