What is an air-trim separator?
We're doing a series of blog posts about how inline cutter systems (cutter/fan trim removal systems) efficiently convey, process and remove continuous edge trim and waste filaments. Part 5 discusses material handling fans. Part 6 explores air-trim separators.
The air in a system and a system’s trim or filaments, whether cut or continuous, must be separated from each other at the inline cutter system's discharge point.
The simplest separation method is to discharge the air and trim into a porous bag, screened box or other perforated enclosure that will retain the trim but not the air. When the enclosure is full of trim, the line must be shut down while the enclosure is emptied. This system is normally used only in low-productivity, discontinuous operations. It does not meet the needs of modern, continuous, high-productivity processes.
The use of an inline cutter markedly increases the trim capacity of the enclosure, usually by a factor of 4 or 5, because the bulk density of the cut trim is substantially greater than that of the uncut trim.
The most common, and usually least expensive, separator used with continuous process is a Cyclone separator, which centrifugally separates the trim or filaments from the air. The air leaves through the top of the cyclone and the material is discharged out the bottom, where it is collected in bags or boxes.
Filter bag separators that combine a separating and filtering function are becoming increasingly common, particularly when control of particulate emissions is a requirement.
Part 7 of our series explores manifold systems.