Full-Flow Air Knife Assists With Flour Recovery

I took a call from a customer who was looking for a way to recover residual corn flour on their chain and paddle, drag conveyor. As the paddles moved down the line, they would start accumulating flour which was leading to uneven batch runs and waste. After reviewing the application with the customer, they determined they were only needing to blow off the width of the paddles, so I recommend using our 18” stainless steel Full-Flow Air Knife.

The Full-Flow Air Knife provides a 30:1 amplification rate (entrained air to compressed air), to produce a high velocity curtain of air that travels the entire length of the knife. With a small profile of only 1” H x 1.25” W, the unit is the ideal choice where mounting space is limited. It is available in a 303SS material which was suitable for this wash-down application.

Full-Flow
The Full Flow Air Knife is available in aluminum or stainless steel construction, up to 36″ stocked lengths.

 

Due to the concern regarding dust, I recommended operating the unit at a gentle 20 PSIG, lowering the velocity to 3,000 FPM and reducing the air consumption to only 1.1 SCFM per inch. A simple pressure regulator is capable of adjusting the volume and velocity of output airflow in order to “fine tune” our knives per application. This would allow for the needed blowoff, as well as reduce the potential of the unwanted dust.

If you have a similar application or would like to discuss your process, please don’t hesitate to give us a call at 1-800-903-9247.

Justin Nicholl
Application Engineer
justinnicholl@exair.com
@EXAIR_JN