BLACKMER IOM E Series, Инструкция по установке, эксплуатации и обслуживанию, Страница: 7 / 52

1901-a00 7
S E C T I O N 3
How It Works—Internal Gear Technology
The E SERIES GEAR PUMP is a rotating, positive displacement pump. These drawings show the flow pattern through the pump
upon its initial rotation. It is assumed that the pump has no fluid in it prior to its initial rotation.
As the rotor continues to turn, the liquid is
forced past the crescent-shaped area and
moves toward the discharge port. As the rotor completes one complete
rotation, the rotor and idler teeth interlock,
forcing the liquid through the discharge of the
pump. The pump may take several rotations
to completely prime depending on the
conditions of the application.
3 4
The shaded area indicates the liquid as it is
drawn into the liquid inlet port of the pump. As
the rotor turns, atmospheric pressure forces
the liquid between the rotor teeth and idler
teeth. The two arrows indicate the rotational
direction of the pump.
1 2
As the rotor continues to turn, the liquid is
forced through the crescent-shaped area of
the wetted path. The crescent-shaped area
divides the liquid and acts as a barrier
between the inlet and discharge ports.