I want to find a complete list or directory of all the ways that a
defective
article can be removed from a product stream. A example would be
removing defective french fries from a steram of french fries going by
on a conveyor or removing a piece of metal from a stream of corn meal
after it has been detected or removing a defective bottle from a high
speed processing line. I am not asking how to detect that the
article to be removed is defective only the list of how identified
articles are removed from the product stream after they have been
identified as defective. I am fimiliar with most of the common methods
but want a comprehensive list. I deal mostly with food products but
want to also look in other areas. This is the first time I have used
your service so I am going to price my question at $50 and see how
comprehensive the answer is. If I get a through response I will use
the service for other questions. Here is a list of the methods I have
come up with on my own: This Is A Temporary
Worksheet For Data On Ejection Methods For Removing Defective Product
From A Product Stream.
A list of the obvious or “normal” methods.
1) Air ejectors
2) Water ejectors
3) Mechanical pin type ejectors
4) Paddle type ejectors
5) Vacuum
6) Wind tunnel
7) Scalpers
8) Stationary diverters
9) Diverter gates
10) Magnetic push or pull
11) Impact (mechanical)
12) Changing the flow or movement properties by inducing a outside
effect (changing viscosity, friction coefficient, buoyancy etc.)
13) Preferential movement of defective object on a free flowing bed
(preferred rolling, sliding or stability)
14) Flaps or “stickers” moving with the product stream
15) Centrifugal force (even though there is no such thing)
16) Buoyancy
17) Size grading ( such as punch plates or weight drop outs)
18) Shape grading ( reaction to a specific shape)
19) Flappers
20) Scalping air or other fluid ( such as chaff blowers or sluice
boxes)
21) Differences in elasticity or “bounce”
22) Variations in dynamic or static friction
23) Differential trajectory (mass or aerodynamically induced)
24) Obliteration or destruction of the defective item ( converting it
to a form that can be easily removed)
25) Bucket conveyor or tray dumping (Items contained in individual
trays or slots)
26) Pop up pins from the bottom
27) Reverse sorting ( removing the good product and leaving the bad)
28) Auger engagement ( such as engaging the flight of a auger moving
along a conveyor)
29) Drop nose conveyor
30) Swing conveyor
31) Spearing or “harpooning” (attach
32) Spike Chain
33) Angled chutes or lanes on a steep angle
34) Lane sorter type set up
35) Engaged or disengaged cams or forks on a continuously rotating
shaft
36) Pipeline valves 3-way |
Request for Question Clarification by
answerguru-ga
on
04 Sep 2002 13:45 PDT
Hi mert1234-ga,
I have to be honest with you...it seems that your list nails down the
large majority of the methods of defective product removal from a
production stream. I personally have a few other ideas of my own that
you may like, but unfortunately there doesn't seem to be any publicly
available list. It would seem that this type of information might
gathered by larger companies dealing with this sort of scenario, but
that is usually then classified as proprietary information and we
wouldn't be able to put that up here anyways.
I also delved around in the academic circle to see if any reasearch
has been conducted on this topic, but it appears that the list you
seek has not yet been devised.
In addition to your list, I have myself come up with (at least) 5
other methods that I would be happy to describe for you, but none of
these seem to be documented anywhere so it is original information as
far as I know. Please respond and let me know if this is worthy of
posting as an answer :)
Thanks,
answerguru-ga
|
Clarification of Question by
mert1234-ga
on
04 Sep 2002 14:34 PDT
What I am looking for is a document or book put out by someone like
the American Society Of Mechanical Engineers or one of the food
processing orgnizations or acidemia or technical publications people.
No I do not think adding some of your own ideas to the list is worthy
of a research answer.
This is a engineering research type of question. Is that out of your
area? Like I said, I have not used this service before and am test
driving it. I have lots of questions but they are all technical in
nature. You know your capabilities better than I do so if this is not
a good match let's just drop it.
Thanks for your input.
Mert
|
Request for Question Clarification by
answerguru-ga
on
04 Sep 2002 16:07 PDT
mert1234-ga,
I wouldn't give up on Google Answers so quickly...there are over 500
other researchers with very different experiences and resources
available to them. Now that we know exactly what you are after someone
may be able to find what you are looking for! As far as your "type" of
question, I'm sure I speak on behalf of everyone when I say you are
welcome to post more questions :)
answerguru-ga
|
Clarification of Question by
mert1234-ga
on
05 Sep 2002 07:22 PDT
If you can find the information I need please proceed. This question
would be typical of others so like I said earlier I am test driving
the service to see what you do with a typical question I would have.
Regards
Mert
|
