Vacuum filter / Negative-pressure filter

Inclined bed filter vacuum SBEV

The POLO inclined bed filter vacuum SBEV is equipped with an endless belt and thus cleans many different liquids fully automatically without additional consumables. The negative pressure increases the flow rate and allows the filter cake to build up higher. This significantly improves the degree of purity.

Their advantages

  • Vacuum filter for low volume flows
  • Correct separation of dirt/clean side
  • Endless belt version
  • Low costs for consumables

Short info

  • Compressed dirt cake, dry, stab-proof
  • 2 different sizes
  • Can be used both as a endless belt filter and as a fleece filter

Endless belt

The SBEV operates with a plastic endless belt as a filter aid. Different filter finenesses (up to 40µm) are available. This means that the discharged dirt cake can be disposed of according to type.

The filter can also be used as a bivalent system without conversion to a fleece filter. This increases production reliability.


The unit consists of a steel or stainless steel welded housing with drive and deflection shaft. The endless belt forms an extremely deep filter trough. Advance is ensured by means of a gear motor. An exhauster for generating the negative pressure and a discharge pump are mounted and tubed on and/or at the filter. The contaminated endless belt is cleaned and returned to the filtration process. The control functions, triggered by float switches, are carried out by an external or integrated electrical control box. The standard version is made of steel. A medium contact version in stainless steel materials is also available.


The dirty liquid flows into the dirt chamber of the filter through an inlet distributor that avoids turbulence. The exhauster creates a negative pressure and increases the flow rate. As a result, a higher filter cake is built up on the endless belt, which improves the degree of purity.

The filter discharge pump directs the cleaned liquid into a clean tank. At a maximum level in the dirt chamber, a belt pre-stroke is triggered. The built-up filter cake is removed from the endless belt and discharged into a dirt box. The endless belt is cleaned and returned to the filtration process. The filtering process does not have to be interrupted for this operation; no buffer tank is necessary.

Due to the short belt cycles, only a very small part of the filter surface is renewed, so that the built-up filter cake remains largely intact as a “precoat”, thus increasing the filter fineness.

A hose seal, resistant to all commercially available cooling lubricants, reliably isolates the dirt chamber from the clean side.


  • Emergency overflow channel
  • Dirt box
  • Different finenesses available

Precise sealing

Made in Germany

Variety of materials

Process safety

No consumables

Picture gallery

Data sheet

Standard sizesSBEV-B1.4SBEV-B1.9
Mounting dimesion L x W1450 x 11101950 x 1110
Height 15501550
Weight approx. (kg)11501250
Dirt chamber content approx. (litres) 400650
Vacuum chamber content approx. (litres)140230
Flow rate max. (l/min) emulsions*600850
Flow rate max. (l/min) oils*200300
Connceted load (kW) 4,944,94
Supply voltage 3 ~ 400 V 50 Hz3 ~ 400 V 50 Hz

*Definition of flow rate: Emulsions and aqueous media approx. 1 mm²/sec at 20 °C and oils up to 15 mm²/sec at 20 °C.
The maximum flow rate of the filter is indicated; depending on the machining process and the degree of contamination, the flow rate may be lower.

Subject to technical changes in the interest of progress.

Download brochure   —>