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Positive Displacement
Rotary-Vane Pumps
for Fluid Processing and Transfer Applications
Sliding Vane Pumps have a number of vanes that are free to slide into or out of slots in the pump rotor. When the pump driver turns the rotor, centrifugal force, push rods, and/or pressurized fluid causes the vanes to move outward in their slots and bear against the inner bore of the pump casing forming pumping chambers.
As the rotor revolves, fluid flows into the area between the vanes (pumping cambers) when they pass the suction port. This fluid is transported around the pump casing until the discharge port is reached. At this point the fluid is squeezed out into the discharge piping.
Benefits and Features
High Volumetric Efficiency Each revolution of a Blackmer Pump
displaces a constant volume of fluid. Variance in pressure
has minimal effect. Energy-wasting turbulance and slippage
are minimized and high volumetric efficience is maintained.
Self Adjusting Vanes Sustain Performance Unlike gear pumps, who suffer diminished performance as wear increases clearances, Blackmer Vanes automatically slide out in their slots to continuously adjust for wear. The result is that near-original efficiency and capacity are maintained throughout the life of the pump.
Efficiency Means Energy Savings Because Blackmer Sliding Vane Pumps have a
high volumetric efficiency and symmetrical bearing support, they
require less horsepower to operate than other positive
displacement pumps. The result to you: Less spent upfront
on motors, and less spent on electricity to operate the
pumps. A blackmer pump will typically require 30% less
power than other positive displacement pumps in handling fluids
from 30 to 500,000 SSU (1 to 108,000 cSt).
Reliable Performance with
Easy Maintenance All
Blackmer Pump models are built with large diameter shafts and
supported at both ends, thus eliminating cantilevered bearing
loads that can accelerate wear and diminish pump
performance. Mechanical seals are manufactured by Blackmer
and designed as an integral component of the pump. This
results in optimum seal and bearing life.
Easy Maintenance
Vane replacement, when necessary, is
easy. Simply remove the outer head, silde out the old
vanes, insert the new ones, and reinstall the head. All in
a matter of minutes. Some pump models are equipped with
replacable liners and end discs. They protect the pump
casing and offer the economy of simple replacement, to restore
the pump back to like-new efficiency.
Self-Priming and Dry Run
Capability Blackmer's
unique mechanical seal and seal-less designs allow dry running
for up to ten minutes, for priming and line stripping. The
self-adjusting sliding vanes help maintain this capability for
consistent priming.
Applications
Volatile Organic Compounds Blackmer Pumps have long been the
preferred pump technology for handling VOC's, and a wide range of
thin products. WIth no metal to metal contact, they are
ideal for pumping non-lubricating fluids efficiently.
High Viscosity or Shear Sensitive Fluids Blackmer pumps are ideal for handling
viscous or shear sensitive fluids. Slow operating speeds,
hydraulic vane acuation and high efficient design minimize shear
and agitation of the liquid.
Abrasive Liquids Wear resistant models of Blackmer Sliding Vane
Pumps have specially hardened and replaceable wear
surfaces. Low speed operation and external bearings that
are completely isolated from the pumpage provide extended life on
tough abrasive services.
Materials of Construction
Four Options Blackmer Sliding Vane pumps are available in Cast
Iron, Ductile Iron, 316 Stainless Steel, or Cast Steel
Construction.
And, as with all Blackmer Products, Sliding Vane Pumps are manufactured and tested in conformance with ISO 9001 Certification.
For the full Sliding Vane Product listing, please contact us or visit Blackmer's website.
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