A few months back I wrote about the impact of installing Super Air Knives in an aluminum processing plant. Those Super Air Knives solved a recurring problem with cleaning alumina dust around conveyors and reduced costs for the end user by over $80k.
That same customer has also found a method to remove fine dust from the underside of the conveyor belt in an application area not suitable for an Air Knife. In this application there was no dust collection system in place to carry away the fines as they are blown off of the belt, so a different type of solution was needed.
That solution was to install a Heavy Duty Line Vac affixed to a vacuum hood to remove fines from the belt and convey them back to the head chute. The only problem with this setup was that the 2” Heavy Duty Line Vac produced a bit too much vacuum flow than what was really needed in the application. So, a pressure regulator was installed to allow for adjustment and fine tuning of the vacuum solution. The customer was able to adjust the operating conditions for the Line Vac and minimize compressed air use while maximizing the vacuuming effect on the fines stuck to the conveyor.
The Line Vac used in this application quickly and easily solved a chronic problem plaguing this manufacturer. By installing this vacuum solution they were able to prevent build-up of dust and debris underneath the conveyor which originally required shutting down the line to clean. This improved process uptime, reduced cleaning costs, and increased throughput in the application.
If you have an application in need of a vacuum solution, consider an EXAIR Line Vac. And, if you have any questions, contact an EXAIR Application Engineer. We’ll be happy to help.
EXAIR Super Air Knives are quite often used on belt-style conveyors to blow off and clean the conveyor of any residual product that may try to stick to the belt and fall off at points along the travel where the product can pile up and create a real mess.
Our most recent version of this application was for a conveyor moving alumina dust in a foundry. Our Australian distributor, Compressed Air Australia, worked with the end user to apply this solution.
Mounting an Aluminum Super Air Knife across the width of the conveyor on the underside, just down-stream of the head pulley, the customer was able to completely eliminate the dust accumulation under the belt.
Before Super Air Knife Installation: After Super Air Knife Installation:
The Super Air Knife with Plumbing Kit, installed below the conveyor belt:
By installing the Super Air Knife, the customer was able to keep production running on the conveyor. Before, they had to stop periodically so the operators could clean up the dust. Dealing with the dust is a safety hazard for the operators for a variety of reasons including inhalation and personal safety risk working around moving parts. The solution allowed production to remain up and moving for longer periods. It also allowed workers to be safer in the environment and also concentrate their manpower and time on other activities as they no longer had to worry about cleaning up this material.
The compact nature of the Super Air Knife with the Plumbing Kit allowed the customer to tuck the unit right up where it was needed most. Notice how the Super Air Knife is blowing almost parallel to the belt. This is key in any Air Knife installation to allow for the longest contact time possible between the airflow and the target. This counter-flow arrangement is how the best performance is achieved with the Super Air Knife.