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Tried-and-tested technology in a new design

BACKWASH DRUM FILTER S (RTF-S)

This filter impresses with excellent backwash performance and a compact design. A customized selection of materials is possible for the most difficult media.

Rueckspuel-Trommelfilter-S

An automatic filter specially devised for low flow rates.

Joachim Nöh, Technical Sales Engineer

Technical data

Flow rate

max. m³/h

Filter fineness

> µm

Operating pressure

1.5 to bar

Flanges

DN 40 to

Automatic cleaning

Yes

Filter housing

Steel, stainless steel, GRP

Advantages

  • High cleaning speed (4-10 m/s)
  • 100% cleaning of the entire filter area
  • Low flushing water losses
  • Robust design
  • Fine filtration ≥ 5 μm possible
  • Uniform feeding of the entire filter area
  • Completely wired and tested unit

High productivity

The raw water enters the filter via the inlet flange and flows through the filter element from the inside to the outside. The solids in the raw water are retained on the outside of the filter element. The purified water leaves the filter through the clean water outlet.

Filterungsablauf des Rueckspuel-Trommelfilter-S

Backwashing

A differential pressure measurement in the raw water inlet and the clean water outlet determines the degree of contamination of the filter element. At a defined differential pressure, the backwash process is activated. An adjustable time relay in the electrical control system additionally enables the backwash process. At the start of filter cleaning, the motor-driven backwash valve opens, generating atmospheric pressure in the backwash line and the flushing window in the filter housing. Due to the excess pressure inside of the filter element on the clean water side, the solids retained on the outside of the filter element are now forcibly backwashed into the atmosphere against the direction of filtration.

The rotation of the filter element guarantees the 100% cleaning of the filter surface. The flushing process is complete after 15-20 seconds and the backwash valve is closed automatically. Filtration is not interrupted during backwashing.

Filterungsablauf des Rueckspuel-Trommelfilter-S
  • Wound wedge-wire screen cylinder with shaft support
  • Wedge-wire screen based on welded triangular rods
  • Highly robust design
  • Can be manufactured in various stainless-steel grades
  • Filter fineness ≥ 5μm  
Filterelement des Rueckspuel-Trommelfilter-S

EXPECT MORE

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Mussel Stop

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Downloads

Backwash Drum Filter (RTF-S).docx

0,02 MB

Backwash Drum Filter (RTF-S).pdf

0,87 MB

World of Filtration.pdf

1,56 MB

SHAPE BETTER VALUES

CLOSER. BETTER. SIMPLER.

We will make sure that you get the filter that is perfectly tailored to your application. Our engineering office will design the filter to match your operating parameters. Our product is thus tailored specifically to your application.

Experienced partner

All DANGO & DIENENTHAL filters are handled by our specially qualified and regularly trained staff. Both our mechanical production and assembly departments have extensive expertise.

Certified testing

Our certified quality management system enables seamless monitoring and control of all production steps. This ensures early detection and troubleshooting, allowing us to offer you a high level of quality.

The team at your side

If you require staff for training or maintenance at your company, don’t hesitate to contact us. Our specially qualified employees will be happy to assist you.

Ideal production conditions

We have been producing filters in our factory in Siegen, Germany, since 1941. Our continuously improved, state-of-the-art range of machinery and modern factory buildings provide an environment that is essential for manufacturing high-quality products.