TM 5-3895-374-24-2
applications
SIHI’s ZTN self-cooling centrifugal pumps may be used
in installations with positive or negative suction pressures
for a wide variety of applications:
• The Chemical Industry heating of agitators, reactors,
drying
plants,
polymerization
plants,
plants
for
conveying highly viscous products and producing
plastic material and synthetic fibers.
• The Rubber & Plastic Industry heating of calenders,
melting pots, automatic injection molding machines
and power presses.
• The Food Industry heating of baking and fish-frying
ovens, rendering plants, distillation of fatty acids and
glycerine and production of milk powder and potato
chips.
• The Paper Industry & Laundries calender rolls,
production of corrugated cardboard, heating of laundry
machines and industrial ironers.
design
Utilizing the latest heat transfer pump technology. SIHI
ZTN pumps are specially designed to provide:
• Uncooled Shaft Sealing
• Shaft Sealing Virtually Free From Leakage
• High Efficiency
• Low Operating Temperatures at Shaft Seal and Ball
Bearing Areas
• Minimal Product Heat Loss
• Avoidance of Thermal Stress
• Reliable Bearings, Low Vibration
The back pull-out design permits the removal of the
bearing housing and complete rotating element toward
the driven end without removing the pump casing from
the suction and discharge piping. With a spacer coupling
installed, the complete bearing housing and rotating
element are removable without disturbing the motor.
Only two shaft assemblies are required for the entire 24
model range. Within each shaft assembly, shafts, radial
shaft sealing rings, impeller nuts, sleeve bearings, ball
bearings, bearing covers and miscellaneous hardware
items are interchangeable. Pumps are designed to
compensate
for
thermal
expansion
by
distinctly
separating the sealing element and the bearing housing.
Since the sealing unit can freely expand in axial direction
without affecting the axial position of the shaft in the
bearing housing, a standard coupling is utilized.
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