USP VERTICAL ELECTRIC CENTRIFUGAL PUMPS WITH UPPER AXIAL SUCTION

Vertical centrifugal electropumps with upper side suction for the pouring of abrasive fluids such as slips with the possibility of continuous operation. With bell and cou- pling joint to Certech motors according to IE2 high performance standards. The impeller and the pump body are realized with hard cast iron to resist to the abrasive action. The hydraulic features are supplied for motors at 6 and 4 poles. The Widia mechanical seal with double cartridge has been realized with springs protected from the pumped fluid, that are able to resist to pressure peaks. Washing at the end of the work shift is however recommended, if the pump contains slip.

The shaft in contact with the fluid to be pumped is protected by a big thickness rubber sleeve. One of the feature of this pump is the fixing to the tank bottom, realized with a very big and strong flange that can support the whole weight of the pump, with a diam- eter that allows the passage of the motor through the same tank bottom. The suction occurs with the falling of the liquid directly on the impeller through appropri- ate ribs and, on request, through a filtering net which is not supplied with the pump. In fact, the pump is usually supplied with a tank realized by us equipped with a filtering net basket through which the liquid drops into the tank, holding the eventu- ally contained solid parts. The solids parts passage in suspension are allowed up to 10 mm diameter. Special executions on request: motor of 60 Hz, board with inverter. The pump is complete with a closed circuit system for seal fluxing installed on the machine which is independent, with compensation tank precharged with compressed air.

Performances with WATER

Type Installed power (Kw) RPM Delivery m 3 /h 20 40 60 80 100
l/min 330 660 1000 1330 1660
USP116-A 11 960 Head metres H2O 22  21  20 18  12
USP154-A 15 1450 44 42 38 34 21

Performances with SLIP 1.7 kg/lt

Type

Potenza installata

(Kw)

RPM Delivery m 3 /h 20 40 60 80 100
l/min 330 660 1000 1330 1660
USP116-B 11 960  Head metres H2O 19  18  17 15  11
USP154-B 15 1450 38 37 35 31 20