Super Air Knives Remove Water from Knee Replacement Parts

EXAIR’s Super Air Knives are the go to when you need to dry your parts as they’re traveling along a conveyor. The high velocity, laminar airflow from the Super Air Knife does a fantastic job of stripping away moisture, leaving your part dry for the next stage of the process. With models available in both 303 & 316 Stainless Steel, Aluminum, and polyvinylidene fluoride and at lengths ranging from 3″-108″, there’s a knife for every application.

I was recently working with a customer that manufactures knee replacement devices. He was designing a new blowoff station to eliminate having to have operators manually dry the parts after a washing operation. He created a test rig to test out his theory of using Super Air Knives. While conducting his tests, he was having issues completely removing the water from the parts. Due to some of the grooves and pockets, the underside was not drying in one pass. This led to him having to manually blow the parts off after they exited the basket. This would not be acceptable as the purpose was to remove the operator from this part of the process. After taking a look at some photos of the setup, I noticed that he had the knives angled so that the airflow was blowing perpendicular to the parts. In doing this, the amount of time that the part is exposed to the airflow is greatly reduced. In any blowoff application, maximizing the time & contact that the part has with the airflow is critical in maximizing effectiveness. By angling the knives so that the parts were exposed to the airstream just as they exited washing, he was effectively able to dry the parts in one pass.

Optimized-IMG_20170313_133531
Improper Positioning of Super Air Knives

We’re frequently contacted by customers who may have the right product for the application, but are not seeing the results they expected. EXAIR has a highly trained team of Application Engineers that are ready and waiting to help you optimize your installation. In addition, EXAIR offers an unconditional 30 Day Guarantee on all stock products. We want you to have an opportunity to test the product out in your application before committing to the purchase. In doing this, we have the unique opportunity to work with you as you troubleshoot the application. If you have an EXAIR product installed and still aren’t seeing the results you expect, give us a call. We’d be happy to look into your setup and determine if there’s anything that can be done to enhance the performance.

Tyler Daniel
Application Engineer

E-mail: tylerdaniel@exair.com
Twitter: @EXAIR_TD

Adjustable Spot Cooler Increases Production Output in a Medical Application

I was recently contacted by a plastics manufacturer who specializes in producing precision medical components. In this particular application they were pushing an ETFE tube onto a heated, flared forming pin. Once the tube is set onto the pin, they placed the assembly into a shroud where they used their shop compressed air running through a manifold split into separate lines to cool the part. This process was working but it takes approximately 1 minute so they called EXAIR looking for a way to reduce their cooling cycle time and increase their daily production.

I recommend they use our Adjustable Spot Cooler and plumb the cold air exhaust to their existing manifold. The Adjustable Spot Cooler incorporates a Vortex Tube to provide a specific temperature drop from the compressed air supply temperature. The output temperature and cold airflow can be easily adjusted using the control valve on the unit. Ducting the output flow would allow the cold air to distribute evenly, not only reducing the cooling cycle but also providing more dimensional stability to the finished product.

Please note, that we do not always recommend running cold air through a manifold because many times these manifolds are metal and simply act as a heat sink, which removes the cold temperature from the air stream. In this case, however, the manifold was made of plastic and the air lines to the formed tube assembly were short. The plastic material insulated the cold air and the short air lines running to the tube assembly also decrease the time the cold air has to lose heat. Applications with typical metal manifolds and longer air distribution lines are best served by using the Adjustable Spot Cooler directly on to the application and eliminating the manifold.

Adjustable Spot Cooler
Maintenance free, spot cooling device providing up to 2,000 Btu/hr. of cooling capacity.

This is just one example of how incorporating a Spot Cooling device into an existing application provided a more favorable end result. Don’t hesitate to give us a call and see how we can help improve your process too.

Justin Nicholl
Application Engineer
justinnicholl@exair.com
@EXAIR_JN