TPT March 2007

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Technology Update
38 March/April 2007
Guyson International, UK, have developed
a two-stage conveyorised Marr-Line tunnel
washer suitable for degreasing ranges of
short metallic open-ended tubes.
Tubes can be washed free of mineral
pressing oil and shop dirt prior to assembly
or subsequent processes.
Varied short tubular
components, such as those
used in heating boilers,
radiators, refrigerators,
chillers and cooling products,
are washed by loosely
packing them upright into
wire baskets. This simple
method allows a wide
range of components to be
cleaned.
Washing is achieved in a high-pressure
spray-washing chamber with the 100 l/min
stainless steel vertical pumps flushing
wash solution through directed wash jets.
The stainless steel honeycomb belt can
take a maximum belt loading of 100kg of
components, and provides good access for
the wash jets below to penetrate the parts,
allowing 360° component washing.
Optional extras include an auto-dosing unit
fitted to the wash tank to maintain accurate
wash strength solution. An external Guyson
tramp oil separator can remove the worst
excesses of oil contamination from the
cleaning solution, thus extending the
cleaning solution life and maintaining its
effectiveness. A Filtermist condenser can
also be fitted above the wash section for
the collection of oil charged water vapour.
The drying section of a typical two
stage machine is fitted with a full width
overhead air knife that can be adjusted to
accommodate different component heights
and angled to shear off as much residual
moisture as possible before entering the
inline heater box, operating at 110°C. Parts
exit onto a 500mm out-feed extension
fitted with a photo electric cell to stop the
conveyor when the basket reaches the end.
All Guyson Marr-Lines include a range
of productivity and servicing benefits.
These provide users with washable filters,
automatic water fill via ball-float valves, low
level water sensors, quick release couplings
on the spray bar units for ease of cleaning,
large easy-opening side doors to all wash
and rinse units to facilitate easy access,
and sloping tank floors for easier and faster
drainage.
Guyson International Limited – UK
Fax: +44 1756 790 213
Email:
Website:
Conveyorised tube washing systems
› A two-stage
Guyson Marr-Line wash
and dry conveyorised washer