Vetter Screw Presses

Screw presses are used to dewater materials of different consistencies.

The purpose of dewatering varies according to the material:

• improve the material behavior for further processing
• improve storage life/conservation of the material
• reduce weight and/or volume in order to reduce transportation or dumping costs
• increase gross calorific value

Screw Presses - Function and Principle of Operation
The material is fed to the pressing screw through a feed hopper, and the screw presses conveys it into the compression area, where the product is further compressed during onward transportation. This is achieved reducing the volume in the screw flights of the press. At the end of the compression area, the product leaves the press through the discharge hopper.
Vetter screw presses are driven by mechanical or hydraulic systems with infinitely variable speed or electronic control.

We adapt the cylindrical or conical screw press design to the course of the screw flights and the screen perforation in accordance with the dewatering behaviour of the relevant product. This enables us to customize machine designs for individual requirements.

Fields of Application

• corn husks, corn germs and wheat gluten
• brewery spent grains
• spent coffee grounds (extracted)
• potato pulp (shredded potatoes and potato peel)
• residues of salad, vegetables, onions and fruit
• citrus fruit peel and pectin
• barley mash
• plastic granulate, cellulose fibres, mineral matter fibres
• eucalyptus fibres
• drug residues
• chicken feathers
• compost, organic waste
• reject sludge, rejects
• ensilage material (grass, rye, corn)

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