When to Use a Receiver Tank for a Compressed
Air Application
by bsbergmann
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Recently, I worked with a production
engineer at a Tier 1 supplier for the auto industry. An upcoming project
was in the works to install a new line to produce headlight lenses. As a
part of the process, there was to be a "De-static / Blow-off"
station, where a shuttle system would bring a pair of the parts to a station
where they would be blown off and any static removed prior to being transferred
to a painting fixture and sent off for painting. For best results, the
lenses were to be dust and lint free and have no static charge, ensuring a
perfect paint result.
The customer installed a pair of 18" Gen4 Super Ion Air
Knives, to provide coverage of the widest 16" lens
assembly, that were staged in pairs.
The customer was limited in
compressed air supply volume in the area of the plant where this process was to
occur. 50 SCFM of 80 PSIG was the expected air availability at peak use times,
which posed a problem - the Super Ion Air Knives would need up to 105
SCFM if operated at 80 PSIG. A further review of the design parameters
for the process revealed that the system needed to blow air for only 4 seconds
and would be off for 25 seconds to meet the target throughput.
This scenario lends itself perfectly
to the use of a Receiver Tank. Running all of the design numbers into the
calculations, showed that the 60 Gallon Receiver Tank
we offer, would allow for a 20 second run-time, and require 13.1 seconds to
refill. These figures were well within the requires times, and would
allow for the system to work as needed, without having to do anything to the
compressed air supply system.
The moral of the story is - if you
have a process that is intermittent, and the times for and between blow-off,
drying, or cooling allows, a Receiver Tank can be used to allow you to get the
most of your available compressed air system.
Note - Lee Evans wrote an easy to
follow blog that details the principle and calculations of Receiver Tanks, and
it is worth your time to read here.
Distribuidor em Portugal Tecmer,Lda
Tel: +351 932308640 /+351 252317314
Email:geral@tecmer.pt
www.tecmer.pt
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