For all the dedication of a mine’s service staff to the really helpful greatest apply in pump administration, someday, encountering instances of pump component wear and tear is inevitable – a matter of when and never if. And when it does happen, element wear inhibits pump performance. It is at that time the place, timeously, mines might have to seriously contemplate retrofitting as a possible possibility.
A rational enterprise choice

In this environment, where prices of capital gear costs are rising, replacement may be a sensible business decision. In an advisory targeted at mines and different industries, pump OEM, KSB Pumps, recommends retrofitting as a rational enterprise determination: “Retrofitting is a superb various to purchasing a model new product and can be performed on pumps no matter their meant use. It is equally appropriate for industrial, water supply and waste water disposal applications in addition to for the facility provide business.”

ไดอะแฟรม is simply natural for mine operators to ponder acquiring new pumps. New pump models meet modern necessities like improved power efficiency, compliance with new legal requirements (relating to emissions and safety), prolonged service life and expertise which produces operating information. But this will not necessitate replacing an old pump model, KSB Pumps says, as retrofitting could give an previous 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 legal necessities (e.g: TA-Luft, ATEX)

READ: Full-service capability important for dependable pump supply

Core areas in Retrofitting

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

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

Installation of latest impellers for off-design circumstances

Optimisation of volute casing for off-design conditions

Adjustment of the number of phases (on multistage pumps)

Mechanical adjustments

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

Installation of mechanical seal techniques

Employment of mobile surface put on rings to improve efficiency, rotor dynamics and dry working properties

Use of optimised supplies

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

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

Non-metallic rings and bushes

Ceramic plain bearings

Surface coatings