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The machines meet the following
requirements:
- Very easy cleaning and inspection
- Highly efficient and versatile, also for “difficult”
products
- Short drying times
- No cross-contamination
- Minimal product hold-up after discharging
- Simple operation and easy validation
- Very efficient and even mixing of the entire product mass
- No product adherence to the vessel wall and base, no dead zones
- Maximum possible heat exchange rate
- Vacuum to 1 mbar
- Agitator support on the dished top head, without any seals in
the product area
- Agitator with vertical movement allows agitation of the total
product volume and thus critical phases during the drying process can
be avoided
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The
machines are designed and built per cGMP and FDA guidelines.
A quality performance related machine according to cGMP and FDA rules.
The important features of the TURBODRY® are:
•
Cylindrical, vertical vacuum vessel with dished
top head and flat base
• The base of the dryers is either welded to the
cylindrical section of the vessel or connected with flanges. The flanges are locked using
traditional clamps or a bayonet system
• All surfaces in contact with the
product such as the vessel, flat base, dished top head, agitator and vapour
filter are heated, providing very efficient heat exchange
• Optional supplemental heating with microwaves
(click here)
• The cylindrical vessel, the flat base and the
agitator are machined to assure the smallest possible tolerances between agitator and
vessel wall and flat bottom respectively.
• Smallest possible tolerances also permit good heat
exchange and prevent product adherence to the vessel wall and flat bottom.
• All internal surfaces
are mirror polished to improve the flow behaviour of powdery products,
the prevention of microdeposits as well as to facilitate cleaning
• The agitator
is installed on the top.
- Adjustable speed using frequency converters with electric drives
or control valves with
hydraulic drives
- Four movement possibilities, clockwise and counterclockwise rotation
as well as raising
and lowering. Simultaneous
rotational and vertical motions result in the following
advantages
· The combination of these agitator movements
permits very efficient and even mixing of
the entire product mass, also
preventing local overheating and the formation of lumps.
· Agitator blockages are prevented by
controlling the lowering movement of the agitator.
· Sensitive products can be
protected by reducing the shear forces acting on the
product to an absolute minimum.
· Highly
viscous products can be dried faster by lifting the product lump formed in the
machine.
- Agitator with two or three arms. The arms are designed
with a unique profile for good mixing
of the product, to discharge the dried product and for very
efficient heat exchange.
- Sealing of the agitator shaft with double mechanical seal and bellows
- The version for sterile applications has welded shaft connections to
provide for ease of
cleaning
- Linear stroke measurement system for vertical position indication of
the agitator
• Mechanical seal
and metal bellows: the double mechanical seal
is installed on the dished top head, above the area wetted by the product and is well
accessible for cleaning and maintenance purposes. Dry or wet running mechanical seals may
be installed. The agitator shaft is sealed by a metal bellows over its full length
• Advantages
of mechanical seal and metal bellows:
- Better final vacuum
- No hazardous leakage or emissions
- No product contamination
- Possibility of sterile operation
- Failure detection system for mechanical seal
- Failure detection system for bellows
• Solids discharge valve for wet or dry
product.
Sealing metal to metal or conventional,
activation by hydraulic cylinder, electric or
hydraulic motor.
Valve seat cleaning by blow-off with nitrogen.
• CIP and / or steam sterilization available
• Vapour filter, equipped with
automatic filter back-cleaning system
• Sample valve
• Machine controls manual, or with PLC, PC and
DCS
• Hydraulic pre-piping and electric pre-wiring
of machine and hydraulic unit
• Hydraulic unit for the agitator and for
auxiliary functions such as raising and lowering of base, activation of the bayonet system
etc.
• Design and manufacturing to the requirements
of international organizations such as ASME, TÜV, etc.
• Environmentally sound and safe to operate
Standard dimensions of
TURBODRY® - Other sizes on request
For more details see TD CLOSED TYPE and TD OPENABLE TYPE
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