For all of the dedication of a mine’s service staff to the beneficial greatest practice in pump management, someday, encountering instances of pump part put on and tear is inevitable – a matter of when and not if. And when it does happen, part wear inhibits pump performance. It is at that time where, timeously, mines might have to noticeably contemplate retrofitting as a feasible option.
pressure gauge

In this environment, where prices of capital equipment costs are increasing, replacement could additionally be a smart enterprise determination. In an advisory focused at mines and other industries, pump OEM, KSB Pumps, recommends retrofitting as a rational enterprise decision: “Retrofitting is an excellent different to buying a new product and may be performed on pumps regardless of their meant use. It is equally suitable for industrial, water provide and waste water disposal functions in addition to for the power provide trade.”

It is just pure for mine operators to contemplate acquiring new pumps. New pump models meet modern necessities like improved power efficiency, compliance with new authorized requirements (relating to emissions and safety), prolonged service life and expertise which produces working knowledge. But this will likely not necessitate changing an outdated pump model, KSB Pumps says, as retrofitting may give an old pump a model new lease of life, particularly within the following methods:
Save upkeep costs

Reduce power consumption

Achieve longer service life

Increase system availability

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

READ: Full-service functionality vital for dependable pump supply

Core areas in Retrofitting

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

Some of the hydraulic modifications might involve:
Remachining of current impellers

Installation of latest impellers for off-design conditions

Optimisation of volute casing for off-design conditions

Adjustment of the number of phases (on multistage pumps)

Mechanical adjustments

The following are some of the mechanical adjustments:
Closed bearing brackets improve the smoothness of operation and extend the bearing life

Installation of mechanical seal systems

Employment of cellular floor wear rings to enhance efficiency, rotor dynamics and dry running properties

Use of optimised materials

The following are its a few of the supplies that a few of the optimised supplies which 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 solutions

Non-metallic rings and bushes

Ceramic plain bearings

Surface coatings

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