Heavy-duty screw conveyors

Screw feeders for cement

Heavy-duty tubular screw conveyors and feeders

Trough screw conveyors

Screw conveyors for fresh concrete

Shaftless screw conveyors

Vertical screw systems

Screw Pumps

SCREW CONVEYORS

VANET - VAL Ltd. supplies different types of screw conveyors and feeders according to the material properties and the specific features of the production process.

1. Heavy-duty screw conveyors

   1.1 Trough multiple  shaft conveyor screws for adhesive/cohesive products.
   Available in stainless steel, standard steel, wear-proof design or coated.

1.2. Cooling screw conveyors for materials of high temperature up to 300 ° С.
Available in stainless steel, standard steel, wear-proof design with double shell;

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2. Screw feeders for cement

Throughput rate: from 4 t/h up to 130 t/h.
Diameter: Ø 114 mm, Ø 138 mm, Ø 168 mm, Ø 193 mm, Ø 219 mm, Ø 273 mm,
Ø 323 mm;
Body: tubular trough in carbon steel powder coated;
Outside tube complete with welded end flanges, one inlet, one outlet, inspection hatch beneath the first inlet and beneath each intermediate hanger bearing;
Options: different types of inlet and outlet spouts; additional inspection hatches; external supports; drive unit at outlet end;

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3. Heavy-duty tubular screw conveyors and feeders

Applications: production of concrete, asphalt, gypsum, lime, building materials (dry mortars, sand, cement, additives), glass processing, foundries, mines, and many others.
Body: tubular trough in carbon steel powder coated;
                            
                  

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4. Trough screw conveyors

Applications: transportation of powders and granules in the production of pet foods, in the plastics industry, in soap, washing powder and detergent processing, in wood processing, in the chemical and mining  industry,etc.
Body: U or V-shape trough in carbon steel or stainless steel;
Options: trough cover; square, rectangular or round additional inlet / outlet spout; overflow hatches; special shaft seals; different drive configurations;
For heavy-duty versions it is supplied screws made from special wear-resistant materials;

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5. Screw conveyors for fresh concrete

This type of screw conveyors is used as an alternative to belt conveyors in the production of precast concrete elements – to convey fresh concrete from the mixer to the moulds. By changing the angle of the paddles in the inlet zone the concrete throughput rate can be altered. The conveyor is equipped with a rubber drop bottom which let the large aggregate particles that end up between screw and trough pass away.
Throughput rate: from 4 m3/h to 220 m3/h;
Length: от 3000 mm to 6000 mm;

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6. Shaftless screw conveyors

This type of screw conveyors offers a large volume capacity and the possibility of handling difficult heterogeneous materials such as solid waste, sludge, waste from meat, fish, fruit, etc. They are widely applied in the waste water treatment, fruit and vegetables processing plants, beverage industry, pulp and paper, slaughterhouses, etc.  
Throughput rate: from 65 m3/h for sludge to 25 m3/h for screenings;
Trough and spiral: carbon steel or stainless steel 304 L / 316 L;
Trough liner: UHMWP;
Options: trough cover; standard inlet spout; inspection and overflow hatches; drainage kit; washing nozzles; different types of power transmissions;

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7. Vertical screw systems

The vertical screw systems consist of a horizontal screw feeder which receives material from a silo, hopper, or another feeder or conveyor, and a vertical screw conveyor that lifts the material to a certain level.
Body: carbon steel powder coated or stainless steel;
Maximum elevation height: 45 meters;
Throughput rate: from 3 m3/h to 800 m3/h;
In comparison with bucket elevators or pneumatic conveying systems, the vertical screw system has the smallest overall dimensions, is easier to maintain, requires the smallest number of spare parts, and offers the best price-performance ratio.

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Screw Pumps

Screw pumps have been used for the pneumatic transport of cement, all types of lime, pulverized coal, gypsum, alumina, and many other powdery materials.
They can operate against conveying-line back of up to 2.5 bar.

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