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Unique Pumping Principle
The mechanical principle of the Tri-Rotor Pump is explained
as follows and incorporates the pump casing, the rotor,
the piston, and the shuttle. The rotor is a liquid-tight
fit within the casing, with the piston and shuttle being
equally liquid-tight in their fit to each other and
to the rotor. In operation the piston slides back and
forth in the rotor slot and discharging from the opposite
end. At the same time the shuttle slides back and forth
within the piston slot (picture), drawing liquid through
one rotor port and discharging through the other. The
rotor, which functions as a rotating valve, channels
the liquid from the intake port around through the casing
and out the discharge port.
This action, while rotary, actually accomplishes the
same type of pumping principle as a direct-acting piston
pump. There are, therefore, two direct-acting pistons
pumping through two cylinders, being valved by the rotary
action of the rotor.
The reciprocating piston action is accomplished by
the center bearing of the shuttle which rotates on a
shuttle pin eccentric to the rotor shaft. Since the
rotor is concentric with the shaft and the shuttle bearing
is eccentric to the shaft, a reciprocating action of
the piston and shuttle within their respective cylinder
slots is created by revolving the rotor. Four overlapping
strokes of the piston and shuttle for each revolution
of the rotor create a smooth discharge with pulsation
reduced to a minimum. An extremely high volumetric efficiency
is obtained because of the piston-type action and the
liquid-tight fit of the moving members. Highly viscous materials are easily handled with exceptionally
high volumetric efficiency while thin, volatile materials
are handled with little loss in slippage through the
pumping members. Materials critical to agitation are
handled with little or no mechanical beating, since
the product is carried through the pump by piston action
without being subjected to the combination centrifugal
and gear or paddle agitation. |
Contact/RFQ 