Configuration And Function - Delta V3 Installation And Operating Manual

14 of 32 Installation and operating manual
4 Description
4.5 Configuration and function
1
2
3
4
5
6
7
8
Design
The pump is designed with an axial fluid inlet and an outlet parallel to the
axis, pointing upwards. The hydraulic system runs in common bearings and is
connected to the motor by a shaft coupling.
Function
The fluid enters the pump via an opening in the foot (8) and is accelerated
outward by the rotating impeller (7). 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 (1), where it leaves the pump. At the rear side of the
impeller, the shaft (4) enters the casing via the casing wall. The shaft passage
through the cover is sealed to the atmosphere with a shaft seal (6). The shaft
runs in rolling element bearings (3 and 5), which are supported by a bearing
bracket (2). The bearing bracket is linked with the pump casing and/or casing
cover.
Sealing
The pump is sealed by three bi-directional shaft seals in tandem arrangement.
A lubricant reservoir between the seals ensures cooling and lubrication of the
shaft seals.
Figure 2. Sectional drawing
1. Discharge nozzle
2. Bearing bracket
3. Rolling element bearing
4. Shaft
5. Rolling element bearing
6. Shaft seal
7. Impeller
8. Foot opening
Delta V3, V4, V6 Submersible Pump