[AT] More on Air Lines
kgw
gwaugh at wowway.com
Sun Aug 7 01:05:34 PDT 2005
I have no idea as to the capacity, but I have seen refrigeration air
dries at Harbor freight for (relatively) little.
--
Gene
Gene Waugh
Elgin, Illinois 60123 USAGreg Hass wrote:
> This information may not be practical for anyone on the list, but I
> would just like to show that there is vast array of solutions to the
> various problems that we may run into.
>
> Our area has long been known for growing white edible beans. The
> quality of the beans being completely dependent on the weather, bad
> weather can cause many off-color beans to be harvested. To sort the
> beans, they use machines that around here are commonly called "the
> eyes". Although I know little of the more modern ones used in the
> last 15 years, the ones used before that were approximately 2' x 2' x 5'
> high. Each machine had a small belt that would drop one single file row
> of beans down a one-ft. square opening. On one side was an electric
> eye, and when it saw a "bad bean", an electric coil would open a little
> needle valve and a puff of air would blow that bean out of the stream
> and onto the "reject" conveyor. The way the eye worked was that for
> each grade, 3 of the side panels would be changed to matched the color
> of bean that was being processed, according to grade. The electric eye
> would then pick up any bean that did not match the backdrop color.
> Because the beans were processed single file, each machine was able to
> process only 400 lbs. per hour. Therefore, there were approximately 40
> machines in one room. The air was supplied by two 10-HP compressors.
>
> The problem that they ran into was that water from the air lines would
> get into the electric coils that opened the needle valves and burn them
> out. According to people that worked there it was quite a problem. The
> answer was a machine about the size of an 8-cu.ft. chest freezer. I am
> not sure of the inner workings of it, however it had a refrigeration
> compressor on it and cooled the compressed air as it went through,
> similar to a dehumidifier. Beside it were a couple of 5-gal. pails.
> They said they took out about 5-gal. of water per shift. However, in
> the 4 years they had had the machine, they had not burned out a single
> coil on the electric eyes.
>
> The reason I said at the beginning that this may not be practical is
> that, if I remember right....(CRS is in play here)... the price was
> $5000 for the air dryer. Still, an interesting solution to a nagging
> problem.
>
> Greg Hass
>
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