GrabCAD China

Hey guys

I'm looking for design of grinding machine as show in figure.

when sort of candies, snack, biscuit are poured into grinding machine. The desired output would be:

all of candy shell, plastic fall into one bucket; the rest will fall into other bucket

My idea didn't get approval, so please give me another ideas, or have you seen one which operates like this one, please give me a link

thanks guys