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VACUUM DRYER


DRUVATHERM® Shovel Dryer

Lödige DRUVATHERM® Shovel Dryers are batch-process, high speed vacuum dryers. The mixing elements, adapted to the process and rotating in a cylindrical drum, jacketed for temperature control, generate a three dimensional movement of the product. The resultant frequent contact of particles with the heat transfer surface shortens the drying times to a minimum.

loedige process technology vacuum drying system mixing
Intensive mixing prevents temperature and moisture gradients in the product
High heat transfer mean more effective drying
Gentle thermal treatment of the product under vacuum
Multiphase process (mixing, granulating, drying, cooling)
Economical solvent recuperation

Mode of Operation

The high speed mixing elements force intensive contact of individual product particle with the heated wall of the machine. Choppers, installed in the side of the machine and rotating at high speed, provide additional dispersion when the product passes from the agglomeration phase to the powder phase. In this way the surface area is enlarged increasing drying efficiency. Fine particles picked up in the solvent vapours are separated out in the pneumatically cleaned filter mounted on the machine and returned to the drying bed of product.

 Models

Motor Power in kW

VT 5   0,75
VT 20   1,5 -3,5
VT 50   2,2 -7,5
VT 130   5,5 -22
VT 300 VTA 300 5,5 -30
VT 600 VTA 600 5,5 -55
VT 900 VTA 900 7,5 -75
VT 1200 VTA 1200 7,5 -90
VT 1600 VTA 1600 11 -110
VT 2000 VTA 2000 11 -110
VT 3000 VTA 3000 15 -200
VT 4200 VTA 4200 22 -250
VT 6000   37 -315
VT 8000   45 -400

easy to clean retractable shaft vacuum drier pharmaceutical industry

DRUVATHERM® Shovel Dryer in VTA configuration with retractable shaft

Range of Application

End and intermediate pharmaceutical products
Chemicals
Recycling
Different types of sludge
Moulding, friction and fibre compounds
Dyestuffs
Plastics (fibre polymers)
Agrochemicals
Chemical specialities

Optional Equipment

Frequency control for speed variation
Product contact parts according to requirement in mild steel, all the usual austenitic steel qualities, duplex steels, titanium or diverse nickle-based materials
Shaft with double action, mechanical face seals (for extreme applications magnetic fluid mechanical seals have been employed.
GMP standards
Supply of peripheral equipment up to a complete system
Drum volumes in sizes from 5 - 30 000 litres
The mixing elements can be drawn out of the drum for easy cleaning, VTA construction

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