Shaft less screw 7

For the preservation of aquatic life

Shaft less screw

  • Sedimentation tank in rigid plate welded construction.
  • Inlet zone with baffle to prevent short-circuit water current.
  • Inlet and outlet flange adapted to the flow.
  • The trough is equipped with hardened steel rails.
  • The shaft less screw is made of a 20mm thick spiral of special high wear-resistant steel.
  • Inclination: 25°.
  • The end of the screw is coupled by a support, bolted to the gearbox.
  • The screw is driven by a hollow shaft motor-reducer.
  • The reducer is fixed to the trough by a support plate.
  • The reducer can be removed without disassembling the screw.
  • The trough is covered by a bolted cover plate.
  • The screw is equipped with inlet and outlet hoppers, and is entirely closed.
  • The screw is made of special hard steel to resist to the maximum wear of friction.
  • The supports are adapted to the local circumstances, according to description in the offer.


  • Sedimentation tank, trough, covers, supports: AISI304,
  • Spiral: special high resistant steel,
  • Drive shaft: Steel P335 

Sand-water mixture


Volume [m³] Surface [m²]
To overflow gutter
ZKL30 30 0,55 1,30
ZKL70 70 1,16 2,30
ZKL150 150 2,57 3,70
Types larger than 6m³ are customized

For the preservation of aquatic life

Other products
Scum collecting unit
Endless spiral
Wear-resistant layer
At Dewekon Engineering, the costumer comes first
Dewekon Engineering stands for quality
Dewekon Engineering strong in installations for water treatment
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© Dewekon 2021 | Disclaimer | Privacy | Cookie | Plenso

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