Pump retrofitting: New Lease of Life for Old Pumps

For all of the dedication of a mine’s service team to the recommended finest follow in pump management, someday, encountering instances of pump element wear and tear is inevitable – a matter of when and not if. And when it does occur, component wear inhibits pump performance. It is at that time the place, timeously, mines could have to significantly think about retrofitting as a possible choice.
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In this environment, where costs of capital tools prices are increasing, substitute may be a sensible business decision. In an advisory targeted at mines and different industries, pump OEM, KSB Pumps, recommends retrofitting as a rational business decision: “Retrofitting is an excellent various to purchasing a brand new product and may be carried out on pumps regardless of their supposed use. It is equally appropriate for industrial, water supply and waste water disposal purposes as properly as for the facility supply industry.”
It is only pure for mine operators to contemplate buying new pumps. New pump fashions meet contemporary requirements like improved power efficiency, compliance with new legal requirements (relating to emissions and safety), prolonged service life and technology which produces working information. But this may not necessitate replacing an outdated pump mannequin, KSB Pumps says, as retrofitting might give an old pump a model new lease of life, specifically in the following methods:
Save upkeep prices
Reduce energy consumption
Achieve longer service life
Increase system availability
Comply with authorized requirements (e.g: TA-Luft, ATEX)
READ: Full-service capability vital for dependable pump supply
Core areas in Retrofitting
The core focus areas in retrofitting are: hydraulic and mechanical modifications to the materials, above and past changes to the materials.
Hydraulic modifications
Some of the hydraulic modifications could contain:
Remachining of existing impellers
Installation of recent impellers for off-design conditions
Optimisation of volute casing for off-design situations
Adjustment of the variety of stages (on multistage pumps)
Mechanical changes
The following are some of the mechanical modifications:
Closed bearing brackets enhance the smoothness of operation and lengthen the bearing life
Installation of mechanical seal techniques
Employment of mobile floor wear rings to improve effectivity, rotor dynamics and dry operating properties
Use of optimised supplies
The following are its a few of the materials that a few of the optimised supplies that could be used:
Super duplex stainless steel grades or nickel alloys
Ceramic mineral castings for impellers, put on plates, cover and casing – to be used with finely dispersed, extremely abrasive options
Non-metallic rings and bushes
Ceramic plain bearings
Surface coatings
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