We are interested in air classifiers. Units referred to as "aspirators" are usually designed to take dust and fines out of larger particles. They often rely on turbulance to stir the material and the waste material is channeled through a fan. This is not the right approach for us. We want to separate the fractions of the material by air resistance/density, want to keep all the fractions, and don't want them damaged or wet. Since we are "separating", not "cleaning", turbulance tends to upset the separation, not help it. Even some of the "elutriators" I've looked at rely far too much on impact for separation, and we don't want the damage. Primarily we are interested in particles that are 5-10 mm diameter with a general bulk density of about 45 lbs/cu ft. Any leads for equipment, standards, approaches/concepts, methods, etc. appreciated goldmandm@phibred.com
I don't know if this is related to what you want, but a comany call Farr deal with air filters for a wide variety of vehicles and have a wide range of products. Might be worth contacting them just to see what is on offer.
blow the particles up a stack, slightly rotate the plume, and seperate at different heights / diameters of a cone or cyl?
How about run 'em up a FAST conveyor belt and launch 'em?
You should get a nice ballistic distribution where they land.
one belt throws onto a faster belt, onto a faster belt step-up system would avoid sudden large accelerations.
Larry
RE: Air classifiers/Particle Separators
NPL101(visitor)
Pull the particles through a series of cyclones , as the air slows only the finer particles are carried through into the second cyclone etc . The design of the cyclones will determine the particulate size deposited at each stage .
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Metal 3D printing has rapidly emerged as a key technology in modern design and manufacturing, so it’s critical educational institutions include it in their curricula to avoid leaving students at a disadvantage as they enter the workforce. Download Now
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now
Talk To Other Members
RE: Air classifiers/Particle Separators
Regards,
Brian Hurley
RE: Air classifiers/Particle Separators
blow the particles up a stack, slightly rotate the plume, and seperate at different heights / diameters of a cone or cyl?
How about run 'em up a FAST conveyor belt and launch 'em?
You should get a nice ballistic distribution where they land.
one belt throws onto a faster belt, onto a faster belt step-up system would avoid sudden large accelerations.
Larry
RE: Air classifiers/Particle Separators
Pull the particles through a series of cyclones , as the air slows only the finer particles are carried through into the second cyclone etc . The design of the cyclones will determine the particulate size deposited at each stage .