Paint Manufacturer Utilizes Self-Cleaning Filter to Solve Throughput Problems
Ask Filter Man
problems with the vibrating screen on its paint fill lines.
A new in-line filter, installed to replace the vibrating screen, had
its own set of problems.
After seeing an ad for Ronningen-Petter Mechanically-Cleaned DCF
filters, Flex Bon engineers contacted RPA Process Technologies and got
the help they needed.
Flex Bon installed a Ronningen-Petter DCF-800 filter, forever solved
the volume, and noise problems on its paint fill lines.
Situation:
Latex architectural paint manufacturer Flex Bon Paints used a vibrating
screen for final filtering on its automatic and semiautomatic paint
fill lines, prior to filling one and five gallon (4 and 19 liter) paint
containers.
The flow rates on the lines ran as high as 80 gpm, but throughput on
the vibrating screen was inadequate.
The screen was too noisy, labor intensive and would overflow, because
solids that collected on the screen had to be manually removed.
Flex Bon engineers decided to look for a quieter filtering system that
could keep up with the fill lines and eliminate the overflow problems.
The in-line filter they selected seemed to fit the bill - or so they
thought. Soon after installation, they began experiencing problems,
including seals that did not properly seal.
The director of purchasing and plant operations at Flex Bon Paints
said,
"We were looking for an answer. We saw an ad for Ronningen-Petter DCF
filters and decided to get more information."
Ronningen-Petter Solution:
After consulting with RPA Process Technologies, Flex Bon installed a
Ronningen-Petter Mechanically-Cleaned DCF-800 filter with an electrical
timer control that purges the collected solids at timed intervals.
The DCF-800 filter has a patented cleaning disc that moves up and down
the filtering screen, scraping debris from the screen and collecting it
in a chamber at the bottom of the filter.
The debris is periodically purged from the collection chamber by a
discharge valve in a process that takes less than 7/10 of a second -
with no interruption in production.
Results:
The Ronningen-Petter Mechanically-Cleaned DCF-800 filter has no moving
seals, so the sealing problems Flex Bon was experiencing with the
in-line filter were eliminated.
Even better, the DCF-800 filter cleans and purges without halting
production, resulting in a constant differential pressure and very high
throughput levels on the paint fill line.
The director of purchasing and plant operations said, "We haven't
found the upper limits of flow rates yet with the DCF. We feed our
one-gallon and five-gallon lines at the same time and cannot starve
them. It exceeded our expectations."
Application Data:
Model: DCF-800
Type of liquid: Latex architectural paint
Flow rate: Up to 80 gpm
Viscosity: 1200 cps
Temperature: Ambient
Filtration Required: 150 micron (100 mesh)
Disc/Purge Control: Electrical timer control
Cleaning Disc Material: UHMWPE
Filter Location: Paint fill area for 1 and 5 gallon cans
Elastomers: Buna-N
by Ask Filter Man
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