Italvacuum Manufactures High-Performance Vacuum Dryers and Auxiliary Equipment

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DÜPERTHAL Sicherheitstechnik GmbH & Co. KG

Multispray tray dryers are aimed especially at the pharmaceutical industry, and are available in two basic cGMP configurations. In the first, the heating plates are fixed in place. This design is extremely easy to clean, with no sharp corners or crevices, all welds ground and polished, and a forward-sloping floor to facilitate the removal of rinse liquid. A wide front flange and set-back legs allow the dryer to be mounted through the cleanroom wall.

A further development shares the high specifications and build quality of the basic model, but has removable heating plates to allow very rapid cleaning. The plates are mounted on a carrier which can be removed from one piece from the dryer, cleaned and inspected before being replaced.

A hydraulically-operated stainless steel trolley is used to move the plate carrier into and out of the dryer easily and safely. To minimize the risk of contamination, the trolley itself does not touch the inside of the cabinet. This design is therefore especially suited to multi-product use. Both Multispray designs can be supplied with a patented cleaning-in-place (CIP) system based around a mobile pneumatic washing unit with a spray nozzle that fits inside the cabinet.

To complement its existing production-scale units, Italvacuum also recently launched a range of laboratory-size vacuum tray dryers. They are designed for glovebox use, with skid-mounted auxiliary fittings.

Patented horizontal paddle dryer

Italvacuum designed its patented Planex System horizontal paddle vacuum dryer to overcome the limits of traditional paddle dryers with concentric agitators. The Planex System has a cylindrical chamber containing an eccentric agitator which can rotate on its own axis and also tangentially to the chamber wall. This double rotation covers the whole chamber volume and provides optimal mixing and mass transfer, so drying times are significantly lower than with conventional systems. The fact that the agitator is much smaller in diameter than the drying chamber keeps mechanical and thermal stresses at one-third of those in a conventional paddle dryer. This prevents local overheating and allows the Planex System to handle delicate and heat-sensitive products.

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