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Disc filter upgrades

Discover our new product innovation FloWing

Optimization solutions for your disc filter

Enhance the capacity and quality of the dewatering process in your stock preparation process. All Voith and conventional disc filters can be upgraded to these new high-quality products.

Excellent dewatering performance and availability of your disc filter

To ensure efficient dewatering capacity, Voith has developed a product portfolio combining long service life, excellent filtration qualities, high capacities and low energy consumption. As a result of these benefits, operating costs, fresh water consumption and fiber loss can be reduced.

Star product BaglessPlus

Product success BaglessPlus
We celebrate 20 years anniversary!

Disc filter sectors that do not require maintenance-prone filter bags - unthinkable until 1998. Since its first installation in 1998 in Shotton (Great Britain), the successful product BaglessPlus from Voith has proven itself in countless disc filters. It is not without reason that since 2002 Voith has been equipping each of its sold disc filters with the filterless sectors that achieve best results and highest customer satisfaction.

130000
BaglessPlus sectors are installed worldwide
90
More than 90% of the sectors installed since 1998 are still in operation

Product portfolio for disc filters

FloWing sectors

New design for outstanding stability and capacity

Based on the proven BaglessPlus sectors, Voith engineers have developed FloWing filter sectors with a patented blade geometry. On the one hand, the novel design allows the growth of a thick fiber mat and, on the other hand, ensures an ideal release of the fibers. Disc filters achieve a new level of capacity thanks to the 56 percent larger surface area. The FloWing sectors are even more robust in key areas, enabling even longer lifetime than the established BaglessPlus sectors.
Thanks to optional adjustments, FloWing filter discs can be used in existing Voith disc filters or those of other manufacturers.

The upgrade of the disc filter in our testliner production to FloWing sectors was successful and we have in reality a significant capacity increase. Since commissioning, we have had no capacity problems, even at high tonnage on the paper machine.
Managing Director Production and Technology, European Testliner Manufacturer

Your benefits

  • Significant capacity increase through patented wing-shaped design
  • Longer service life due to outstanding stability and rigidity
  • Consistently high filtrate quality
  • Minimal maintenance effort

BaglessPlus sectors

Efficient dewatering without filter bag

Thanks to the development of the BaglessPlus filter discs, previously unrivaled running times and maintenance costs are achieved. Upgrading a disc filter from conventional sectors with filter bags to BaglessPlus sectors improves both, the specific production capacity and the filtrate quality.

Upgrades to BaglessPlus are possible for

  • all Voith disc filters and
  • GL&V, Andritz, Ahlström, Impco and Wenrui disc filters.

Consistently high filtrate quality

Quality of the super clear filtrate over a period of 10 years

The consistently high filtrate quality over the entire service life of the BaglessPlus filter discs leads to a significant reduction of fiber loss and fresh water consumption. There are no restrictions on using the super-clear filtrate on the spray nozzles of the paper machine.

Your benefits

  • Maintenance and running costs are reduced to a minimum
  • Filter disc service life of 15 years and more
  • Reliable filtrate quality over the entire operating life
  • Increase in capacity of up to 20%
  • Saves on fibers and fillers within the paper machine circuit
  • Reduction of fresh water consumption
  • Higher availability of the paper machine

Image gallery

  • Picture 1 - 3 shows our BaglessPlus sector for CDI5.0 disc filters
  • Picture 4 - 6 shows our BaglessPlus sectors in various angles

Filtrate valves

Stable vacuum creation increases disc filter capacities

A constant vacuum in the range 0.4 - 0.5 bar is the basis for reliable and constant operation of the disc filter. Because efficient dewatering can only be achieved with optimum vacuum, for which the filtrate valve is largely responsible. The Voith filtrate valve distinguishes between two filtrate qualities during dewatering: cloudy and clear filtrate. When used in the paper machine circuit, super clear filtrate is also produced. This distinct separation into the different filtrate qualities is made possible by the innovative design of the filtrate valve. As a result, accumulation of air is avoided and a high, stable vacuum is therefore generated.

HiCon 2.0 Technology

HiCon 2.0 Technology
  • Safe guidance of discs in solid rails; eliminates risk of crash
  • Inlet consistencies up to 2% possible
  • Significantly reduced pumping power
  • Up to 20% more throughput
  • HiCon guiding system and BaglessPlus filter discs also available as rebuild kit

Nozzles

The patented nozzles optimize disc filter operation

Fast and clean removal of the fiber mat and cleaning of the filter discs are necessary for constant disc filter operation. The Voith nozzles achieve reliable knock-off of the fiber mats. This means that the pulp can be removed via the transport shafts quickly and without leaving residues. Continuous and thorough cleaning of the filter discs is achieved by the knock-off and cleaning nozzles. Any blockages can be removed during operation by turning the lever.

V-bag filter bags

The new generation of V-bags from Voith achieves longer service lives and therefore more reliable and stable operation of the disc filter. The integration of the Protector sheet in the filter bags offers the bags additional protection against damages caused by sharp sector edges. This substantially extends the service life and as a result the maintenance intervals of the disc filter. In addition, capacities can also be adjusted by means of special blind strips on the filter bags.

Various filter bags are available for all disc filters from Voith and other manufacturers. If required, Voith offers filter bags tailored to customer needs:

  • Voith V-bag P: Polypropylene bag
  • Voith V-bag C: Corrugated polypropylene bag
  • Protector sheet: Can be combined with V-bag C and V-bag P

Downloads

  • Product portfolio for excellent dewatering performance – Disc filter upgrade

    Product portfolio for excellent dewatering performance – Disc filter upgrade

    PDF
    English German

Your contact - What can we do for you?

Asia

Bruce Sun

Local Product Manager

China

t +86 512 5799 3733

Masamori Tanaka

Local Product Manager

North East Asia

t +81 3 6221 3116

North America

Dylan Schnese

Local Product Manager

t +1 920 358 2445

Mick Wert

Sales Manager

t +1 920 358 2543

South America

Vinicius Tonini

Local Product Manager

t +55 11 3944 5257

Successful disc filter upgrades

Expectations exceeded at
WEIG-Karton: significantly improved filtrate values after rebuild

After a successful startup following the rebuild of the third-party disc filter, WEIG-Karton recorded significant improvements in filtrate values, while at the same time maintenance costs are now demonstrably lower. This was achieved by integrating BaglessPlus disc filter sectors and a new filtrate valve. BaglessPlus disc filter sectors provide increased capacity by up to 15% to 20%, while at the same time improve filtrate quality. Clear filtrate and super-clear filtrate quality have significantly exceeded customer expectations.

Successful rebuild of Hedemora disc filter at Sappi

Voith has successfully converted the existing Hedemora disc filter in the stock preparation unit at Sappi in Kirkniemi, Finland, to the latest BaglessPlus filter technology. As the number of discs could be reduced, the disc filter will be well prepared for future increase capacity.

Service for your disc filter

At Voith, the success of the customer takes center stage. Service means delivering customized service solutions and utilizing our full expertise to help you reach your goals.

Disc filter Voith Paper

Best filtrate quality and trouble-free operation

Our worldwide active service specialists have in-depth process knowledge and are familiar with the latest optimization and upgrade options to support our customers and meeting their requirements. Our scope of service ranges from inspection of complete disc filters during shutdowns to setup-, condition- and performance checks during operation.

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