Inclined Filter

The inclined filter is used to filter liquids by means of filter cloth (geotextiles). The device is a hydrostatic inclined filter, where all parts in contact with media are made of stainless steel.

The filtration is done by a self-sealing filter fleece, which is matched to the particular application. The filter fleece is transported and coiled by a gear motor. A float switch controls the fleece transport and the filter cake is stripped off into a dirt tank.


Leiblein inclined filter

The wastewater is fed into the filter from above, and gets evenly distributed over the entire fleece width through a cascade box. The filter fleece is fed into the water chamber from the bottom. The filtration is performed on an inclined plane, whereas the actual filtration happens in the lower part of the fleece, and a post-dewatering of the filter cake takes place in the upper part.

The gear motor is switched on once a certain water level is exceeded. The filter fleece together with the filter cake is then pulled upward, the cake is stripped off and the fleece is taken up by a take up spool. At the same time, new fleece is drawn into the chamber at the bottom end of the fleece. Due to the now lower flow resistance, the water level decreases and the motor stops.

Fields of Application

The inclined filters can be used, for example, for continuous treatment of cooling lubricants or for degreasing baths. Further fields of application are the filtration of wash waters, fish ponds, wastewater (e.g. after precipitation/flocculation) as well as other process waters.

Other applications are wastewaters which are difficult to treat, as they tend to cake or clog the fleece, as for example wastewater with paint residues or landfill leachates.

Further examples and applications can be found in our references:


Advantages of the inclined filter:

  • filter fleece supply from bottom -> the fleece is loaded with sediment first
  • flotation tailing is extracted together with the sediment at the discharge side -> optimal use of fleece
  • filter cake is removed from the fleece -> requirements of the cycle economy-law are fulfilled by the separate disposal of fleece and mud.
  • the filter fleece lies flat on the inclined filter ->optimal use of the entire filter width
  • lateral sealing of fleece -> no leakage of unfiltered medium into the clean water tank
  • reusability of the filter fleece when used in grinding processes -> low operating costs
  • filter made of stainless steel -> long life
  • low maintenance, few parts subject to wear and tear
  • inclined plane -> well drained filter cake


Inclined filter type A (throughput> 100 l/min.)

Length Width Height
SF 500 1.135 mm 810 mm 550 mm
SF 1000 1.135 mm 1.300 mm 650 mm
SF 1000 L 2.115 mm 1.300 mm 650 mm


Inclined filter type B / short (throughput< 100 l/min.)

Length Width Height
SF 145 ECO 700 mm 365 mm 340 mm
SF 250 ECO
700 mm 470 mm 340 mm
SF 500 ECO
700 mm 725 mm 340 mm

Leiblein inclined filter – everything's clear!

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