Wednesday, March 3, 2010

MB - Horizontal centrifugal pumps


IM - Vertical centrifugal pumps
in Polypropylene and PVDF

The vertical centrifugal pumps made in resin are high efficiency pumps for fixed installations with the pump immersed directly in a tank, operated by an electric motor in direct drive (max. 3000 rpm) for rapid emptying of fluid, with a flow rate of from 16 to 55 m3/hour. The particular form of construction of this pump, in addition to not using internal mechanical seals (subject to high wear), guarantees that any accidental leakage of the fluid is collected in the tank. The open rotor allows very dirty fluids, with an apparent viscosity of up to 500 cps (at 20°C) and small sized suspended solids, to be pumped with a continuous flow. The choice of the pump's composition materials allows you to determine the best chemical compatibility with the fluid and/or the environment without forgetting the correct temperature field.

Description
The vertical centrifugal pumps in resin are made up of a sturdy body and a column fixed to the bracket plate, above which is fixed the lantern that is the fixing element for the electric motor. The motor is direct drive mounted onto the pump's shaft using an elastic joint, supported by a radial bearing. The open rotor is fixed at the opposite end of the shaft. The construction of this pump allows the motor to be disassembled without having to remove the pump from the system.

How the pump works
The rotor, integral with the shaft and the electric motor, mounted in direct drive, is rotated at a pre-set speed creating, due to a centrifugal effect, intake on the central duct and delivery on the peripheral duct..
Executions in: Polypropylene, PVDF;
pump immersed in tank
motor can be disassembled with the pump installed;
no welds;
can also be used with very dirty fluids;
high flow rates: from 15 to 55 m3/hour;
motor replacement without removing the pump;
simple replacement of wearable bushings;
extreme ease of maintenance;
can be disassembled completely;
can be supplied without a motor.

Installation
The vertical centrifugal pumps must only be installed with the axis positioned vertically and the pump immersed in the tank. Suitable devices must be used to avoid dry operation, the formation of vortexes and the possible intake of air. The vertical centrifugal pumps must only operate when the PUMP IS FLOODED; operation when dry or with air bubbles can cause damage to the internal bushing.

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