Pump retrofitting: New Lease of Life for Old Pumps

For all the dedication of a mine’s service staff to the recommended greatest practice in pump administration, someday, encountering cases of pump element put on and tear is inevitable – a matter of when and never if. And when it does occur, element put on inhibits pump performance. pressure gauge is at that time where, timeously, mines could have to significantly consider retrofitting as a feasible option.
A rational enterprise decision

In this setting, where prices of capital tools costs are rising, substitute could additionally be a wise enterprise decision. In an advisory targeted at mines and other industries, pump OEM, KSB Pumps, recommends retrofitting as a rational enterprise choice: “Retrofitting is an excellent various to buying a model new product and could be carried out on pumps no matter their meant use. It is equally appropriate for industrial, water supply and waste water disposal applications as properly as for the power supply trade.”

It is simply pure for mine operators to contemplate buying new pumps. New pump fashions meet modern necessities like improved energy effectivity, compliance with new authorized requirements (relating to emissions and safety), prolonged service life and know-how which produces operating knowledge. But this will likely not necessitate replacing an old pump model, KSB Pumps says, as retrofitting may give an previous pump a new lease of life, specifically within the following ways:
Save upkeep prices

Reduce energy consumption

Achieve longer service life

Increase system availability

Comply with authorized necessities (e.g: TA-Luft, ATEX)

READ: Full-service capability vital for reliable pump provide

Core areas in Retrofitting

The core focus areas in retrofitting are: hydraulic and mechanical modifications to the supplies, above and past adjustments to the materials.
Hydraulic modifications

Some of the hydraulic modifications could involve:
Remachining of existing impellers

Installation of recent impellers for off-design circumstances

Optimisation of volute casing for off-design situations

Adjustment of the variety of stages (on multistage pumps)

Mechanical changes

The following are a few of the mechanical changes:
Closed bearing brackets improve the smoothness of operation and lengthen the bearing life

Installation of mechanical seal methods

Employment of mobile floor wear rings to improve efficiency, rotor dynamics and dry running properties

Use of optimised materials

The following are its some of the supplies that some of the optimised materials that might be used:
Super duplex stainless steel grades or nickel alloys

Ceramic mineral castings for impellers, wear plates, cowl and casing – to be used with finely dispersed, highly abrasive options

Non-metallic rings and bushes

Ceramic plain bearings

Surface coatings


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