Rotating Screw

• Bulk material reception
• Bulk material intermediate storage
• Sawmills and particle board plants as well as in the cement industry and in heating and power stations.
• Concrete and steel cylindrical silos or in stock piles.

Paper Waste:

  Fibrous, compacts / blocks

Paper Sludge:

  Fibrous, compacts / blocks

Dry Flakes:

  Compacts

Sander Dusts:

  Compacts

Wet Flakes:

  Compacts

Shredded Waste Wood:

  Blocks, abrasive

Wood Chips:

  Blocks, abrasive

Bark:

  Compacts / blocks, abrasive, corrosive

Secondary Fuels:

  Compacts / blocks, abrasive

REA gypsum:

  Compacts

Drive:

3 - 200 kW

Weight:

approx. 4 -24.6 t

Dimensions:

Silo:

Up to ⌀ 8,000 mm, 12,000 mm, 15,000 mm, 25,000 mm

Tower:

Up to ⌀ 900 mm, 1,450 mm, 2,100 mm, 3,100 mm

Unit:

Screw adjusted to the bulk material

Controls:

Motor temperature, overfilling sensor, central lubrication

Wear:

As an option, specially tailored to the application and the bulk material, for example different stainless steels, Hardox, wear protection welding, Infinite Shield (ceramic)

Execution:

CE declaration of conformity
ATEX: standard no ex-qualification

Alternatives:

Inside: Zone 22 /
Outside: No Zone (EX II 3/-D)

Inside and Outside: Zone 22 (Ex II 3/3 D)

• Diameter of approx. 10 m up to 25 m.
• Discharge capacities of more than max. 400 m³/h.
• Solid construction (i. e. live ring for screw and tower).
• Regular discharge over the whole silo cross section realized by a conical progressive screw.
• Simple and quick erection of the installation on site by mainly pre-assembled groups of components.
• Good accessibility of the installation even during operation.

The manufacture of the screw wings depends on the bulk material:

• Cantilever design
• Robust construction
• Cone screw axis
• Screw bearing independent of rotating tower bearing
• Wings with scarifiers

The rotating screw consists of a screw with a rotating tower, in which the screw is held and where the drive gear and the central lubrication systems are. The drive motor, advance drive, cooling and electrical switch cabinet are also rotating and arranged below the tower and are easily accessible.

The discharge screw consists of a conical tube with screw flights progressively inclined. Thus a regular discharge over the whole silo cross section is guaranteed. Dependent on the bulk material, the flights are equipped with scarifiers.

The cover is rotating and connected via a slide bearing to the tower. The whole tower rests on a ball bearing slewing rim, whose exterior ring is screwed fix below the silo bottom with the cast iron ring.

The load-dependent electrical advance drive prevents overload of motor and gear and excludes compactions of the material by an optimum adaptation of the advance drive speed to the bulk material.

The outlet chute arranged centrally in the silo axis is equipped with a level indicator which switches off the installation in case of overfilling of the outlet chute. All working electrical parts rotate with the screw and will wired through the central electrical rotary transmission

0 - 400 m³/h

• High availability with very robust construction
• Continuous bulk material feeding over the whole silo cross section
• Easy assembly and maintenance