4 Description of the Pump (Set)
23 of 80
Vitacast / Vitacast Bloc
4.6 Configuration and function
7
8
9 10
11
12
1
2 3 4 5 6
Fig. 2:
Sectional drawing of a Vitacast Bloc
1
Volute channel
2
Discharge nozzle
3
Clamping piece
4
Pump shaft
5
Rolling element bearing for pump
shaft
6
Drive lantern
7
Suction nozzle
8
Impeller
9
Casing cover
10
Shaft seal
11
Bearing assembly
12
Drive
Design
The pump is designed with an axial fluid inlet and a radial outlet. The hydraulic
system is rigidly connected to the motor via a stub shaft.
Function
The fluid enters the pump via the suction nozzle (7) and is accelerated outward in a
radial flow by the rotating impeller (8). In the flow passage of the pump casing (1)
the kinetic energy is converted into pressure energy. The fluid is pumped to the
discharge nozzle (2), where it leaves the pump. At the rear side of the impeller, the
shaft (4) enters the hydraulic system via the casing cover (9). The shaft passage
through the cover is sealed to atmosphere with a dynamic shaft seal (10). The pump
shaft runs in a rolling element bearing (5), which is supported by a bearing assembly
(11). The motor shaft is inserted into the pump shaft (stub shaft). The drive (12) is
connected to the pump via the drive lantern (6).
Sealing
The pump is sealed by a mechanical seal.
4.7 Noise characteristics
Table 10:
Surface sound pressure level L
pA
[dB]
7)
Size
Pump set
1450 rpm
2900 rpm
032-025-145
< 70
71 - 75
032-025-175
< 70
71 - 75
7)
Measured at a distance of 1 metre, 1.6 metres above the installation surface
Содержание Vitacast
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