Pump retrofitting: New Lease of Life for Old Pumps

For all of the dedication of a mine’s service staff to the really helpful finest practice in pump management, someday, encountering circumstances of pump component wear and tear is inevitable – a matter of when and never if. And when it does occur, element put on inhibits pump efficiency. It is at that point where, timeously, mines may have to noticeably contemplate retrofitting as a possible option.

In this surroundings, where costs of capital equipment costs are rising, replacement may be a wise enterprise determination. In an advisory focused at mines and different industries, pump OEM, KSB Pumps, recommends retrofitting as a rational business decision: “Retrofitting is an excellent alternative to purchasing a model new product and may be carried out on pumps regardless of their supposed use. It is equally suitable for industrial, water provide and waste water disposal applications as properly as for the facility provide trade.”

It is just natural for mine operators to ponder buying new pumps. New pump models meet modern necessities like improved vitality efficiency, compliance with new legal requirements (relating to emissions and safety), extended service life and expertise which produces working knowledge. But this will likely not necessitate changing an old pump mannequin, KSB Pumps says, as retrofitting may give an previous pump a new lease of life, particularly in the following ways:
Save maintenance costs

Reduce power consumption

Achieve longer service life

Increase system availability

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

READ: Full-service capability important for reliable pump supply

Core areas in Retrofitting

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

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

Installation of recent impellers for off-design conditions

Optimisation of volute casing for off-design situations

Adjustment of the number of phases (on multistage pumps)

Mechanical adjustments

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

Installation of mechanical seal techniques

Employment of cellular surface wear rings to improve effectivity, rotor dynamics and dry working properties

Use of optimised supplies

The following are its a few of the supplies that a number of the optimised supplies that might be used:
Super duplex stainless-steel grades or nickel alloys

Ceramic mineral castings for impellers, wear plates, cover and casing – for use with finely dispersed, highly abrasive solutions

Non-metallic rings and bushes

Ceramic plain bearings

Surface coatings


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