Configuration And Function - Delta Foul V3 Installation And Operating Manual

4.6 Configuration and function

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4.6.1 Design
The pump is designed with an axial fluid inlet and a radial outlet. The hydraulic
system sits on the extended motor shaft. The shaft runs in common bearings.
4.6.2 Function
The fluid enters the pump axially via the suction nozzle (8) and is accelerated
outward in a cylindrical flow by the rotating impeller (6). In the flow passage
of the pump casing the kinetic energy of the fluid is converted into pressure
energy. The fluid is pumped to the discharge nozzle (9), where it leaves the
pump. At the rear side of the impeller, the shaft (2) enters the casing via the
discharge cover. The shaft passage through the cover is sealed to (is sealed to
atmosphere) atmosphere with a shaft seal (5). The shaft runs in rolling element
bearings (1 and 2), which are supported by a bearing bracket (4) connected to the
pump casing and/or discharge cover.
4.6.3 Sealing
The pump-end shaft seal is a bi-rotational mechanical seal; the motor-end seal is
a shaft seal ring.
A lubricant reservoir between the shaft seal ring and the mechanical seal
provides cooling and lubrication..
Delta Foul V3 Submersible Pump
4 Description
Figure 3: Sectional drawing
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1. Rolling element bearing, motor end
2. Shaft
3. Rolling element bearing, pump end
4. Bearing bracket
5. Shaft seal
6. Impeller
7. Suction cover
8. Suction nozzle
9. Discharge nozzle
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