Discharging systems

Discharging by tipping

In the sewer cleaning vehicle „Super 2000“, a two-tank system is divided into a sludge tank and a separate water tank.
The water tank is firmly fixed to the vehicle's chassis and does not tilt. Therefore, the centre of gravity is always kept down.

Area of application

Suits all cases of discharging in the sewer cleaning field. The tank is tilted by an angle of min. 45° by a stainless steel tray in the lower part of the tank or by the stainless steel tube at the front of the tank.


Advantages:

  • Tipping is the fastest and easiest way of discharging
  • Requires less weight in comparison to other discharging methods
  • No lost volume in comparison to other discharging methods
  • No accident risk
  • The tilted tank allows easy access for installation, maintenance and repairs
 

Disadvantages:

  • No disadvantages!
  • The variable arrangement of sludge and water tank is not possible.
    It is not required in a sewer cleaning vehicle with water recycling

 

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Pneumatic Piston

Area of application

The pneumatic piston is used in sewer cleaning vehicles (with or withour water recycling) especially in suction vehicles and in ADR-vehicles, also drainage of heavy materials such as Bitumen.

 


Advantages:

  • The piston can divide the tank in to variable volumes according to where the piston is positioned.
    (Only in vehicles without water recycling)
  • For vehicles with water recycling, the variable arrangement of the tank volume is not a must
  • For ADR-vehicles the piston helps in the discharge of heavy materials such as Bitumen.

Disadvantages:

  • Volume loss due to piston's position (ca. 1m³)
  • More weight on the vehicle (ca. 500 kg)
  • According to TüV regulations, safety measures are taken in to consideration to reinforce the piston's stops, should there any failure happen, the piston doesn't burst forwards or backwards
  • Due to the piston's rear stop, the desired discharged material can't be fully discharged because the piston doesn't reach the tank's end. Therefore the remaining material needs to be discharged manually
  • The tank's volume distribution can't be predetermined before locating the piston's stops

 



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Hydraulic Piston

Due to all the dangers and risks of the Pneumatic piston, Wiedemann & Reichhardt developed the Hydraulic piston. (Patent W&R)

Area of application

The hydraulic piston is installed in sewer cleaning vehicles, suction vehicles and in ADR-vehicles which are required to discharge heavy materials such as Bitumen.

 


Advantages:

  • Infinite tank volume distribution due to no piston stops
  • No danger of the piston bursting. No accident danger
  • The tank can be fully discharged because the piston stroke reaches the tank's end
  • No damage for the piston or for the tank. (longer life)

Disadvantages:

  • Volume loss due to piston's position.
  • More weight on the vehicles (approx. 500 kg)
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Discharging by auger

Discharging by auger in the sewer cleaning vehicle „SUPER 3000“ (patent W&R)

Area of application

Auger discharge is used in the sewer cleaning vehicles with water recycling.

Auger discharge allows the discharging of sludge in a container on the spot.

Discharging by auger is the most suitable discharging method for the
„SUPER 3000“ as far as the material is dehydrated.

 

 

Advantages:

  • Easy and fast discharging in a normal container
  • Discharging can be done on the spot (No wasted time on traveling to a waste deposit)
  • No traffic jam
  • Continuous work in the canal

Disadvantages:

  • No technical disadvantages
  • The discharged material should be dehydrated to an extent that when emptied it doesn't splash
  • The discharging time of a 8m³ tank takes around 10 to 15 minutes