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Range pumps abrasive solids

PVS pump range in an underground mine

POWER PUMP The PVS range can handle solids to 72 mm and specific gravity

8th October 2021

     

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Mining systems solution provider Becker Mining South Africa’s PVS range of vortex pumps has been designed to efficiently pump sludge and slurries containing large abrasive solids and fibrous materials in light, medium and heavy service industries.

The PVS range, which can handle solids to 72 mm and specific gravity (SG) to 1.5, achieves up to 87 m heads at speeds of 2 950 r/min. These units are available in 2” and 3” models, with a 0.7 m spindle length and direct motor drive.

“The most important feature of these vertical pumps is the recessed, nonclog impeller design that prevents binding and clogging problems. Since the impeller is clear of the pump casing, any solids and fibrous materials that enter the suction inlet will be expelled through the pump discharge, without damaging the impeller,” says Becker Mining South Africa senior consumables GM Rick Jacobs.

“Another advantage of Becker’s pumps design is that spares are completely interchangeable. “This reduces inventory management costs and simplifies on-site repairs. Because all components are locally manufactured, these pumps are readily available and a large stock holding of spares and raw materials ensures swift delivery throughout the country.”

The PVS series, with a robust one piece casing, has been designed to efficiently cope with all types of solids and fibrous materials. A locknut that fastens the impeller to the shaft prevents the impeller from turning off if the motor is started in the incorrect direction of rotation.

These pumps have a sleeve stuffing box clearance that minimises blow-back of materials being pumped around the shaft sleeve, without requiring sealing contact. A high strength pipe column maintains alignment between the bearing frame and its casing. There are no submerged bearings on the cantilevered shaft.

Bearings have been selected for a minimum service life of 24 000 hours when operating at any point on the hydraulic coverage curve with 1.0 S.G. Grease lubrication is standard.

These pumps have a heavy-duty construction, with chrome iron CR28% material, which has been hardened to withstand abrasive materials and for increased service life. When in its annealed state, it is 2 80-400 BHN, while after undergoing heat treatment, it is 650-700 BHN. Other materials include cast iron and SS316.

Becker Mining South Africa employs a fully integrated ISO quality management system as part of a dedicated design, manufacturing, testing and repair facility. The company is also able to adjust its extensive range of pumps to suit specific requirements.

Edited by Zandile Mavuso
Creamer Media Senior Deputy Editor: Features

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