4 Description of the Pump (Set)
15 of 36
Calio-Therm NC
1157.881/03-EN
4.6 Configuration and function
3
2
1
4
Fig. 2:
Illustration of the pump set
1 Discharge nozzle
3 Suction nozzle
2 Impeller
4 Radial plain bearing
Design
The pump is designed with a radial fluid inlet (suction nozzle) and a radial fluid
outlet (discharge nozzle) arranged on the same axis. The impeller is rigidly connected
to the motor shaft. Mechanical sealing is not required as the rotating assembly is
completely isolated from the stator winding. The rotating assembly is lubricated and
cooled by the fluid handled. The lubricating system and high-quality ceramic
bearings ensure smooth running and a long service life. The combination of an
efficient hydraulic system with a high-efficiency electric motor makes sure that the
input power is converted into hydraulic energy as efficiently as possible.
Function
The fluid enters the pump via the suction nozzle (3) and is accelerated outward in a
cylindrical flow by the rotating impeller (2). In the flow passage of the pump casing
the kinetic energy of the fluid is converted into pressure. The fluid is pumped to the
discharge nozzle (1), where it leaves the pump. The shaft runs in radial plain bearings
(4), which are supported by the motor.