Aerodynamic grain cleaner

[boasley]

Evening all, quick question if you don't mind... does anyone have any experience of the "aerodynamic" type grain cleaners made in Eastern Europe and available here brand new for a few thousand quid?
It's basically a big fan in a box with a stream of grain falling in front of it which separates seeds based on how far it blows them.
I've got an ancient sieve type shaky dresser which every year needs more woodworms knocking out of it, duct tape and all round band holding the sieves together, thought I'd have to bite the bullet and buy something expensive but these air cleaners look quite affordable.
I've got a good contract for organic oats with a good premium based on bushel weight and I also have a bit of an historic wild oats problem... could blow all this stuff out the back of the combine but it seems to make sense to blow it out in a shed!
This sort of thing if anyone's got time to have a look. https://alistan-agro.com/en/separators/separator-als-10/
All thoughts appreciated!
Thanks

 

[sjt01]

Evening all, quick question if you don't mind... does anyone have any experience of the "aerodynamic" type grain cleaners made in Eastern Europe and available here brand new for a few thousand quid?
It's basically a big fan in a box with a stream of grain falling in front of it which separates seeds based on how far it blows them.
I've got an ancient sieve type shaky dresser which every year needs more woodworms knocking out of it, duct tape and all round band holding the sieves together, thought I'd have to bite the bullet and buy something expensive but these air cleaners look quite affordable.
I've got a good contract for organic oats with a good premium based on bushel weight and I also have a bit of an historic wild oats problem... could blow all this stuff out the back of the combine but it seems to make sense to blow it out in a shed!
This sort of thing if anyone's got time to have a look. https://alistan-agro.com/en/separators/separator-als-10/
All thoughts appreciated!
Thanks

Something similar but rather longer used to be used in the tea industry to separate grades of dried tea. It was called a Java Tunnel, but Mr Google has never heard of it!

 

[solo]

Some one on here bought one of those Allistan cleaners. Not sure who though, but I remember him saying it needed a pre sieve to get straws, awns out first.

 

[boasley]

Thanks for the feedback so far. I try to get the combine to sieve out the big rubbish in the field, just thought that with a normal sieve dresser things like wild oats and mayweed heads go through same holes as oats... With an air cleaner I'm wondering if I can make them fly away... And all right I'll admit it looks like a cheap way to clean stuff... If it works!

 

[sjt01]

This is the design for an elutriator, designed in the early seventies at the NIAE Scottish Station for use in a hillside combine. It is excellent at separating similar materials, we built one in Malawi for separating Stylo seeds and husks. The pdf attached gives easier to read dimensions. You can make it as wide as you like to give capacity. Air in bottom right, material in top hopper, light material out top left, heavy out bottom.

 

[boasley]

Thanks @sjt01 what an interesting project. I've got an old snail fan sitting around, if only I had the time to make one... Much appreciate you uploading the drawings and pictures, thanks!