Product range

The scrapers are designed with rake blades as an approximate logarithmic spiral or as a louvre blade. The blades are executed as a stable plate-edge design and have rubber-wiping blades at the bottom and side as well as water-lubricated rollers, which automatically adjust to the running radius. If desired, the base scrapers can be swung over the water surface by means of manual cable winches. Alternatively, the base scrapers can be made maintenance-free by a rigid attachment to the bridge.

Possible base scraper versions:

• Logarithmic spiral or louvre blade
• Swingable (non-wearing) or towed (with rollers)
• Removable
• With or without wear notification

All scrapers can be fitted with wheel drive units with rubber, Vulkollan® or a positive drive system (pinion, rail and gear rack).

Every scraper system can be combined with any floating scum scraping system.  Paddle unit, automatic skimming drain, guidance plate with stationary collecting chamber or other agreed systems are possible.

The rotary suction scrapers are fitted with suction nozzles or suction tubes with V-plates. Depending on the client’s wishes, the scum can be delivered into a scum drain using pumps or through evacuated siphon tubes. The tubes can be individually adjusted, and vacuum easily generated, via our special discharge bowls on the siphon tubes.

Possible base scraper versions:

• Suction nozzles or V-plates
• Siphon tube or pump
• Automatic or manual evacuation

All scrapers can be fitted with wheel drive units with rubber, Vulkollan® or a positive drive system (pinion, rail and gear rack).

Every scraper system can be combined with any floating scum scraping system.  Paddle unit, automatic skimming drain, guidance plate with stationary collecting chamber or other agreed systems are possible.  

Rotary scrapers with central drive offer total winter security and in price terms represent time and again an attractive alternative. The tanks can also be designed without a central structure, which significantly saves on construction costs. The simple structure reduces maintenance expenditure to a minimum.

Possible versions:

• Blind scrapers or logarithmic spiral
• Fixed or removable
• With or without floating matter extraction with guidance scraper and stationary collecting chamber
• With or without intake cylinder
• With or without mechanical or electric overload protection

Rabble rake devices, also known as concentrators, are used to thicken sludge. The simple design with central drive saves construction and operating costs and reduces maintenance expenditure to a minimum.

Possible versions:

• Blind scrapers
• With or without rabble bars
• With or without floating matter extraction with guidance scraper and stationary collecting chamber
• With or without intake cylinder
• With or without mechanical or electric overload protection

The fully automatic skim drain uses a float to always adjust to the current water level of the tank. This ensures that the skim edge has a constant depth of immersion and that the water component in the skim drain is minimised. The pump is controlled as a rule via a stop-start cycle control in the control cabinet.

As an option, the system can be supplemented by a floating scum detector in order to further optimise the extraction of floating matter.

Floating scum removal system specifications:

Floating scum skim drain, l = 2.5 m, when removal system is operating automatically adjusts to the water level of the secondary sedimentation basin.

Submersible pump Q = 10 l/s

Stripper for baffle side and small, rigidly fixed feeding scraper inside

Materials: Construction parts, wetted, made of stainless steel 1.4571

The floating scum scraper system is used for extracting floating matter from the water surface.

The front edge of the floating scum scraper system is adjusted to the level of the water surface via hand wheels. The paddle unit is driven by a gear motor and moves the floating scum via a drain into the collector. The floating matter pump is activated by floating switches.

Floating scum removal system specifications:

Skim drain paddle unit, l = 2, 4 or 6 m

Pump box, 0.8 x 0.8 x 0.8 m

Submersible pump Q = 10 l/s

Stripper for baffle side and small, rigidly fixed feeding scraper inside

Materials: Construction parts, wetted, made of stainless steel 1.4571

Manual and automatic devices for clearing round and polygonal drains, inside and outside, in addition to baffles.

With their vertically rotating roller brushes, the drain cleaning devices are suitable for motorised cleaning of the drain base and the side walls of internal and external drainage channels and baffles.

The brush carriage sits below the bridge and is therefore optimally aligned towards the drainpipes, which are arranged in a star pattern in the middle of the tank.

The brush carriage can be positioned over the drainpipes using the switch lug assembled on the side of the tank and a cleaning process activated.

For maintenance purposes and brush replacement, the brush carriage can easily be lifted onto the bridge.

For removing dirt and snow from tracks.

The basic version can be expanded in a modular fashion:

Lifting motor instead of hand wheel

De-icing facility with hand wheel

De-icing facility with solenoid valve

Controls on the device instead of in the scraper's control cabinet

Hoists in various versions

J.A.G. lifting davit

Load:                100 kg

Material:          1.4301 or after consultation

Aluminium manual cable winch

J.A.G. heavy lifting davit

Load:                300 kg

Material:          1.4301 or after consultation

Aluminium manual cable winch

An electric lifting motor can also be fitted upon request.

The positive drive system consists of a rail with S profile and gear rack.

The rail system is attached with brackets to the tank head or existing track cover. Our bracket system allows thermal expansion and is adjustable for height.

The scraper is driven via a pinion built into the chassis.

Rail wheels with/without wheel flanges are used.

The gear rack drive is used for both circular and longitudinal scrapers.

Advantages:

Safe operation in winter

No further costs such as de-icers or heating costs for track housing

Also suitable for “old” tank heads as a retrofit

Various drainage and collecting drain systems are used, e.g. for wastewater drainage in circular tanks or a grit collecting drain in a grit chamber.

Possible versions:

Wastewater drain with overflow threshold (serrated edge, DIN 19558 form A/form B) and baffle (polygonal, round)

Submerged drains

Submerged pipe systems

Drain covers

Drainage boxes

Grit drains (level, raised)