Anco Eaglin A-E Votator - Manual (Page 4)

4
How Components Are Selected
Votator ® Scraped Surface Heat Exchanger
components are manufactured in a variety
of configurations and materials so that each
unit can be assembled to meet the specific
processing requirement of each application.
All pressure elements are designed in
accordance with the latest ASME code
requirements and can be CE-PED certified.
Jacket – Votator ® Scraped Surface Heat
Exchangers can be jacketed for liquid,
steam, or direct expansion refrigeration.
Heat Transfer Tube – Thermal conductivity
and wall thickness are key design
considerations in selecting heat transfer
tubes. Tube wall thickness is precisely
engineered to minimize heat transfer
resistance while maximizing structural
stability.
Pure nickel tubes provide high thermal
conductivity. The inside of the tube is hard
chrome plated, then honed and polished to
a smooth finish for resistance to wear from
scraper blades and abrasive products.
Stainless steel tubes specially designed for
enhanced heat transfer are offered for acidic
products and to provide flexibility in the use
of cleaning agents for aseptic processing.
Scraper Blades – Votator ® scraper blades
are arranged on the shaft in staggered rows.
The blades are held on the Votator
® Scraped
Surface Heat Exchanger shaft by strong,
durable, specially designed “universal pins,”
which are welded to the shaft. There are no
threaded areas to cause product build-up
and possible unsanitary conditions. These
pins allow quick, easy blade removal and
replacement. A variety of blade materials
are available.
Seals – Years of experience led to
development of the Votator ® rotary
mechanical seals. Seals are designed for
easy assembly and maintenance, and for
clean operation.
Standard seal faces for best durability
consist of hardened surfaces. Flexible seal
parts are available in a variety of elastomers.
Votator ® II double mechanical seals are
designed with the capability to use steam
or water seal flush, and all are suitable for
aseptic processing.
Shaft – The amount of time the product is
within the heat exchanger for a given rate is
controlled by the volume of the unit.
Small-shaft heat exchangers provide a large
annulus for longer residence time, they
handle lumpy products and those having
large particles. Large-shaft heat exchangers
provide a smaller annulus for high velocity
and turbulence with high heat transfer rates
and short product residence time in the unit.
Drives – The drive for the Votator ® Scraped
Surface Heat Exchanger is selected to
provide optimum performance in each
individual application and thus assure
that the product is vigorously agitated
and continuously removed from the heat
transfer wall. Votator
® Scraped Surface
Heat Exchangers are furnished with direct
drive gear motors with horsepower selection
for optimum performance for the specific
application.
SHAFT MOUNTING 4x120 VOTATOR® II VOTATOR® EXTRA HEAVY DUTY
CONCENTRIC
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ECCENTRIC
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OVAL
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