4 Description
17 of 68
Calio
1157.821/04-EN
4.6 Configuration and function
8
7
9
10
11
12
4
5
6
1
2
3
Fig. 5:
Description and sectional drawing of the pump set
1
Thermal insulation shell
7
Discharge nozzle
2
Control panel
8
Radial plain bearing
3
Connections for control cables
9
Impeller
4
Display
10 Motor shaft
5
Control element (dial and control
button)
11 Motor
6
Connections for power supply, "in
operation" message and general
fault message
12 Suction nozzle
Design
The pump is designed with a radial fluid inlet (suction nozzle) and a radial 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, high-quality graphite bearings and
precision-balanced rotor ensure smooth running and a long service life. The
integrated continuously variable differential pressure control and operating software
enable an optimum adjustment of the pump to changing operating conditions and
minimise operating costs. 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 (12) and is accelerated outward in a
cylindrical flow by the rotating impeller (9). 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 (7), where it leaves the pump. The shaft runs in radial plain
bearings (8), which are supported by the motor (11).
