4 Description of the Pump (Set)
21 of 126
Amacan S
1589.837/01-EN
4.7 Configuration and function
1
2
3
4
5
7
6
8
9
10
Fig. 5:
Amacan with mixed flow impeller
1
Suction nozzle (bellmouth)
2
Impeller
3
Pump casing
4
Electric motor
5
Shaft
6
Bearing, drive end
7
Bearing bracket
8
Bearing, pump end
9
Bearing housing, pump end
10
Shaft seal
Design
The pump is designed with an axial fluid inlet and an axial outlet. The hydraulic
system sits on the extended motor shaft. The shaft runs in common bearings.
Function
The fluid enters the pump axially via a suction nozzle (bellmouth) (1) and is
accelerated outward in a rotating flow by the rotating impeller (2). The required
energy is transmitted from the electric motor (4) to the impeller (2) via the shaft (5).
In the pump casing (3) the kinetic energy of the fluid is converted into pressure
energy. The rotational movement diverts the fluid flow into a mixed flow. The shaft
passage through the casing is sealed towards the fluid with a shaft seal (10). The
shaft (5) runs in two rolling element bearings (7 and 8), which are supported by the
bearing housing (9) and the bearing bracket (6).
Sealing
The pump is sealed by two bi-directional mechanical seals in tandem arrangement.
A lubricant reservoir in-between the seals ensures cooling and lubrication of the
mechanical seals.
Monitoring equipment
The pump sets are equipped with various sensors.
Standard
▪
Temperature monitoring of the motor
▪
Temperature monitoring at the lower bearing
▪
Leakage monitoring of mechanical seals
▪
Leakage sensors in the motor chamber and connection space
