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HUBER Multi-Rake Bar Screen RakeMax® CF The innovative variant of the well-proven RakeMax® screen with high hydraulic throughput capacity

  • Increased separation efficiency through flow deflection in the bar rack
  • Optimal hydraulic utilisation of existing channels
  • Unsusceptible to grit, gravel and stones

The HUBER Multi-Rake Bar Screen RakeMax® CF is perfectly suited to serve both municipal or industrial wastewater, and process water screening.

Due to its different design options the RakeMax® CF covers a very wide range of applications, allowing us to respond to the individual needs of our customers and to specific constructional and hydraulic site conditions.

HUBER Multi-Rake Bar Screen RakeMax® CF: Due to its vertical installation, the screen requires very little space - ideal for confined spaces, deep channels and pumping stations
HUBER Multi-Rake Bar Screen RakeMax® CF: Due to its vertical installation, the screen requires very little space - ideal for confined spaces, deep channels and pumping stations
The HUBER Multi-Rake Bar Screen RakeMax® CF is an universally applicable screen for both new and existing structures
The HUBER Multi-Rake Bar Screen RakeMax® CF is an universally applicable screen for both new and existing structures
The RakeMax® CF combines the benefits of maximum free screen surface and very high separation efficiency. Moreover, it is space-saving and reduces civil costs
The RakeMax® CF combines the benefits of maximum free screen surface and very high separation efficiency. Moreover, it is space-saving and reduces civil costs
The rake tines, fully engaging with the bar rack, prevent jamming of solids in the bar spacings
The rake tines, fully engaging with the bar rack, prevent jamming of solids in the bar spacings
The U-shaped bar rack of the RakeMax® CF achieves a plus in hydraulic throughput capacity
The U-shaped bar rack of the RakeMax® CF achieves a plus in hydraulic throughput capacity
HUBER Multi-Rake Bar Screen RakeMax® CF connected with a HUBER Screenings wash Press WAP®.
The HUBER Multi-Rake Bar Screen RakeMax® CF combines the advantages of the proven RakeMax® with the positive features of a centre flow screen, here installed for screening return sludge.
The HUBER Multi-Rake Bar Screen RakeMax® CF combines the advantages of the proven RakeMax® with the positive features of a centre flow screen, here installed for screening return sludge.
HUBER Multi-Rake Bar Screen RakeMax® CF in open-air installation.
Design sketch: The screen proves its insensitivity to abrasive materials, such as grit and gravel, as the screen rake engages above the bar rack
Design sketch: The screen proves its insensitivity to abrasive materials, such as grit and gravel, as the screen rake engages above the bar rack
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Design Sketch: Schematic drawing of the HUBER Multi-Rake Bar Screen RakeMax® CF with its U-shaped bar rack for an increased hydraulic throughput capacity
Design Sketch: Schematic drawing of the HUBER Multi-Rake Bar Screen RakeMax® CF with its U-shaped bar rack for an increased hydraulic throughput capacity

Design and Function

Design Sketch: Schematic drawing of the HUBER Multi-Rake Bar Screen RakeMax® CF with its U-shaped bar rack for an increased hydraulic throughput capacity
Design Sketch: Schematic drawing of the HUBER Multi-Rake Bar Screen RakeMax® CF with its U-shaped bar rack for an increased hydraulic throughput capacity

The HUBER RakeMax® CF consists of a U-shaped stationary bar rack installed between the two screen frames, parallel to the flow direction of the wastewater. Whilst the wastewater flows into the open front side of the screen and out through both the left and right bar rack, solids are retained on the inner surface of the U- shaped bar rack.

The solids retained on the bar rack lead to gradual blinding of the bar rack surface which has an impact on the level difference in the channel. Cleaning of the screen bars starts at a defined water level in the channel upstream of the screen. The RakeMax® CF achieves this with its cleaning elements attached to the chain system.

The discharge capacity can be adjusted to individual requirements as the number of screening elements attached to the chain system is variable.

Due to the specific design of the RakeMax® CF screen its height above floor is very low and, even in case of deep channels, only dependent on the installation height of the downstream screenings transport or washing system.

If the screen operation is blocked, an electric control reliably protects the screen against damage caused by overload.

At the end of the bar rack cleaning cycle the rake is positively cleaned by a pivoted comb which reliably discharges the removed screenings into a downstream transport or disposal unit. The easy to access and maintain drive unit is installed above the channel.

The benefits of the HUBER Multi-Rake Bar Screen RakeMax® CF

  • Increased separation efficiency through flow deflection in the bar rack
  • Integrated emergency overflow
  • Optimal hydraulic utilisation of existing channels
  • Very low headloss – high separation efficiency
  • Defined meshing of the cleaning rakes with the bar rack ensures a high operating reliability.
  • Screen installation possible without a bottom step
  • Compact design with a low installation height above ground level
  • Completely odour-encased screen with easy to remove covers
  • Not hindered by gravel or grit
  • Easy-to-retrofit into existing channels, installation without channel recesses possible
  • The screen is a sturdy self-supporting stainless steel construction and therefore can easily be lifted out of the channel.
  • Simple and easy-to-access chain tensioning unit
  • All machine components in contact with the medium are made of stainless steel and acid treated in a pickling bath (except chains, pinions, drives and bearings). The chains and chain wheels are optionally available in stainless steel.
  • High screenings discharge capacity through a variable number of screen rakes
  • Automatic scraper mechanism, no service water required

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FAQ

Frequently Asked Questions

Machines with a steep installation angle are best suited for such applications.

This screen installation option allows the installation space to be very compact, especially in the direction of flow.

Typical examples are our HUBER Multi-Rake Bar Screens RakeMax® and RakeMax® CF as well as the HUBER Belt Screen EscaMax®, HUBER Coarse Screen TrashMax® and HUBER Grab Screen TrashLift.

The best possible screenings discharge capacity is achieved with screens that have several rakes. The number of rakes can be adjusted to suit the conditions.

In addition, screenings discharge capacity can also be influenced via the discharge speed, e.g. through drives controlled by frequency converters.

 

Case Studies

HUBER Solutions in Operation

img-casestudy-24-02-rakemax-cf-02-bartow
2024-02-01 North America

Multi-Rake Bar Screen 2.0: the HUBER RakeMax® CF, an all-rounder with powerful hydraulics

It's the next chapter in the success story of the HUBER Multi-Rake Bar Screen RakeMax®, which has been on the market for...

Continue reading
img-casestudy-lacrosse-01-bt-construction
2022-11-21 Isle La Plume, WI,
USA

From screen building to sewage sludge drying: complete modernisation of the La Crosse wastewater treatment plant with HUBER

HUBER Technology Inc., the Denver, North Carolina-based subsidiary of HUBER SE, was awarded the contract for the...

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img-casestudy-22-02-erfolgsgeschichte-01
2022-02-27 Berching, Germany

The HUBER Multi-Rake Bar Screen RakeMax® – a success story with more than 3000 installed machines

At HUBER SE, the 3,000th RakeMax® screen has left the factory at the company’s headquarters in Berching. In the course...

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Design Sketch: Schematic drawing of the HUBER Multi-Rake Bar Screen RakeMax® CF with its U-shaped bar rack for an increased hydraulic throughput capacity
2021-05-11

HUBER Multi-Rake Bar Screen RakeMax® CF: An innovative screen system convinces in practice

According to the motto "two become one", the HUBER Multi-Rake Bar Screen RakeMax® CF combines optimally matched...

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img-casestudy-20-07-rakemax-cf-teaser
2020-07-07

HUBER combines proven RakeMax® with center flow screen

HUBER presents the HUBER Multi-Rake Bar Screen RakeMax® CF, an innovative variant of the well-proven RakeMax® system...

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