The last step in an engine assembly process is 'burn-in' on a test stand. Each engine is connected to a dynamometer and run for a period of one to five minutes. Residual engine oil on the head produces smoke during the test and this has to be removed via extractor fan. In one particular application, the vent hood at the top of the stand had insufficient capacity to contain the smoke.
The solution was to install a super air knife, manufactured by Exair and available from local agents Etest. The knife was mounted on both sides of the test stand. The sheet or 'wall' of air produced by the knife, captured, contained and diluted the smoke while directing it towards the vent hood.
The environmental problem was solved without obstructing the technicians' observation of, or access to the stand. The use of the super air knife for containment and separation is becoming increasingly common. Other typical applications include:
* Retaining heat in curing and drying ovens.
* Protecting workers from coolant splatter.
* Isolating industrial camera lenses from airborne contaminants.
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Megatech SA has been importing high quality industrial plant equipment and spare parts since 2016. Based in KwaZulu-Natal, the company specialises in electrical and mechanical equipment and instrumentation.
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