Standard Air Wipes™ Clean Agriculture Drain Pipes

Standard Air Wipe Family

Being in Ohio, I have gone by many farmlands with rolls of black polyethylene tubes in the fields.   They use these tubes to place in the ground to create proper drainage in the fields. A manufacturer of these agricultural drain pipes sent me a video of their operation.  After the pipe was extruded, they would run it through a wash system to cool the pipe.  After the wash system, they needed to remove the water from a 4” (102mm) diameter pipe at a speed of 70 feet per minute (21 meters per minute).  They designed a home-made device that used a blower-system to blow the water off the pipe (reference photo below).  Since the pipe had ribs and the blower system is at a much lower force, the removal rate of water was only around 75%.  They needed a way to get the pipe dryer before packaging. 

This company made plastic pipe ranging from 4” (102mm) to 10” (254mm) in diameter.  When they searched for pipe and tube blow-off devices, they came across the Standard Air Wipes from EXAIR.  The design of the Standard Air Wipe blows compressed air at a 30-degree angle toward the center in a 360-degree air pattern, just like a cone.  It uses a Coanda profile to maximize the entrainment of ambient air into the compressed air stream to produce a strong force.  As a non-contact wiping device; the Standard Air Wipe is very efficient and very powerful. 

For this application, I recommended the model 2485 5” Standard Air Wipe Kit.  This kit includes our Standard Air Wipe, a Filter Separator, a Regulator, and a Shim Set.  With a ½” or 13mm clearance, it gave ample room to allow the 4” (102mm) pipe to travel through without touching and to allow for ambient air entrainment.  The Filter Separator will remove bulk liquids and debris from the compressed air to keep the unit performing optimally and to keep the pipe from getting dirty.  The Regulator is used to control the amount of force.  This helps to not over-use the amount of compressed air required for the cleaning.  With a Regulator, you can make fine adjustments to get the proper amount of air while the shims in the Shim Set will give you coarse adjustments.  With the Regulator and Shim Set together, you can “dial” in the correct amount of force required for the different speeds.  The Standard Air Wipe Kits will give you the most versatility in your system to optimize the 360-degree blow-off. 

As they removed their home-made unit and attached the Super Air Wipe, they noticed some great things.  The speed of production was increased by about 10% which matched the maximum speed of the machine.  The water removal from the surface was near 100% even in the rib area.  (Some acceptable “overlaps” in the extrusion process was cleared by QC).  They also noticed that the Standard Air Wipe was much quieter; near 82 dBA at 80 PSIG (5.5 bar).  The nearby operators were very happy with this choice as the blower-type system was very loud.  And, with no moving parts, the Air Wipe was able to remove the maintenance requirements for the blower system and used a much smaller footprint.  Also, we use a split design to mount the Standard Air Wipe around the outside of the pipe without cutting into the extruded lengths.

With the creation of the EXAIR Standard Air Wipes; uniform cleaning, cooling, and blowing around the outside of parts is a simple task.  You don’t have to worry about many nozzles to target the circumference, or a fabricated blow-off device that will waste time and money.  At EXAIR, we offer a 30-day unconditional guarantee for U.S. and Canadian customers.  This customer used the 30-day trial to try the Standard Air Wipe.  After the testing, they will now purchase the model 2491 11” Standard Air Wipe Kit for their largest pipe.  You can order them from our website at www.EXAIR.com or call us at 800-903-9247.  If you need help in selecting the proper size for your application, you can contact an Application Engineer at EXAIR for help. 

John Ball
Application Engineer
Email: johnball@exair.com
Twitter: @EXAIR_jb

Custom 6″ Super Air Wipe Solves Moisture Problem for Food Packaging Manufacturer

At EXAIR, we will never shy away from an application just because we don’t have something on the shelf ready to go from stock. We pride ourselves in the ability to provide a custom solution for an application that requires it. Just because you don’t see something in the catalog doesn’t mean we can’t make it happen! This was the case recently with a customer that manufactures food vacuum packaging machines.

A piece of the bag material is extruded, washed, and then filled with product. After the material is extruded it enters a water-cooling bath just before being inflated. The customer needed a solution for blowing off this excess water before opening the bag and packaging the finished products.

They designed a series of nozzles in a ring to provide a flow of compressed air to remove the residual water after the cooling bath. This worked for the most part, but was not effective at completely removing all of the moisture. After searching online, they came across the EXAIR Super Air Wipe. The Super Air Wipe was the exact tool they were looking for, providing a 360° laminar airflow around the full exterior of the bag. The only problem was that space was severely limited. To allow it to fit in their machine, we manufactured a special 6” Super Air Wipe with a reduced overall footprint and countersunk bolts to fit perfectly. Since air consumption was a concern, we installed a .001” shim to cut the total volume of compressed air needed in half!

EXAIR offers a line of Super Air Wipes available to ship same day from stock as well. The Super Air Wipe is available in aluminum construction in sizes ranging from 3/8” – 11” in diameters. All Super Air Wipes come with stainless steel hardware and stainless steel shims. Sizes up to 4” include a brass tee that supplies one half of the Super Air Wipe while a stainless steel wire braided hose supplies the other side. Sizes over 4” should be piped directly to each ¼ NPT compressed air inlet. In addition to aluminum construction, the Super Air Wipe is also available in 303 stainless steel for corrosive or high temperature applications. The Stainless Steel Super Air Wipe can withstand temperatures up to 800°F and is available in sizes from ½”-4” from stock.

If you’re processing any type of hose, wire, or extruded shapes that could benefit from installing a Super Air Wipe give us a call. With all sizes shipping from stock on an order received by 2:00 pm EDT we can have one to you as early as tomorrow!

Tyler Daniel
Application Engineer
E-mail: TylerDaniel@EXAIR.com
Twitter: @EXAIR_TD

Daniel Bernoulli, Entraining EXAIR Products

Daniel Bernoulli was born February 8, 1700 in Groningen in the Netherlands and was the son of Johann Bernoulli an early developer of calculus. It is believed that Daniel did not have a good relationship with his father. This mainly stemmed from the both of them entering the same scientific contest at the University of Paris. The two tied and his father Johann took exception to being compared to his son as “equal” and could not accept the shame and banned Daniel from his home. Daniel tried to reconcile their difference but his father carried this grudge to his death.

Earlier in Daniels life his father convinced Daniel to study business as there was no income incentive to study mathematics but against his will Daniel did choose the study of business. His father then convinced Daniel to study medicine but Daniel still wanted to study mathematics and agreed to study medicine under the condition that his dad teach him mathematics privately. Daniel completed his bachelors degree at the age of 15 and his masters degree when he was 17. Daniel then went on to study medicine and received his PhD in anatomy and botany from the Universities of Basel, Heidelberg and Strasbourg.

Daniel Bernoulli was very accomplished but mostly known for Bernoulli’s principle. Bernoulli’s principle is the relationship between fluid speed and pressure. An increase in the speed of a fluid will occur simultaneously with a decrease in the fluid’s pressure or potential energy. The Venturi effect, published in 1797 by Giovanni Venturi, applies Bernoulli’s principle to a fluid that flows through a tube with a constriction in it. The Venturi tube provides a handy method for mixing fluids or gases, and is popular in carburetors and atomizers, which use the low pressure region generated at the constriction to pull the liquid into the gas flow. It also offers a particularly clear example of the Bernoulli principle.

For example, above is how a Super Air Wipe works. Compressed air flows through an inlet (1) of the Air Wipe into an annular chamber (2). It is then throttled through a small ring nozzle (3) at high velocity. This primary airstream adheres to the Coanda profile (4), which directs it down the angled surface of the Air Wipe. A low pressure area is created at the center (5) inducing a high volume flow of surrounding air into the primary airstream. As the airflow leaves the Air Wipe, it creates a conical 360° ring of air that attaches itself to the surface of the material running through it (6), uniformly wiping the entire surface with the high velocity airflow.

EXAIR incorporates the Bernoulli Principle with our engineered products which entrain air such as our Super Air Knives, Super Air Wipes, Air Amplifiers and Static Eliminating products to name a few. We have several Applications Engineers that will appreciate your call to discuss our products. If you have an application or question please call 800.903.9247 or visit us on our website www,EXAIR,com and let us help you.

Eric Kuhnash
Application Engineer
E-mail: EricKuhnash@exair.com
Twitter: @EXAIR_EK

EXAIR Super Air Wipes: Conical Blow-off for Cable, Pipe, Hose, Extrusions

EXAIR manufactures two types of Air Wipes; the Standard Air Wipe™ and the Super Air Wipe™.  They are designed to blow an airstream in a concentric pattern around the outside of pipes, cables, extruded shapes, hoses and much more.  In this blog, I will focus on the features and benefits of the Super Air Wipes.  Their unique design, variety of sizes, and construction definitely makes this product “Super”.

The Super Air Wipes are used to blow-off, cool, clean and dry products.  The air is blown in a conical 360o pattern completely around the outside of parts.  EXAIR engineered a Coanda profile to entrain large amounts of ambient air.  This will increase efficiency by using less compressed air and still generate a large force to perform the task.  The Coanda profile is set at a 30o angle to increase the contact area and keep debris away from the portion of the product that has already been cleaned.

Simply open the two halves, and clamp them around your product…no threading!

The construction of the Super Air Wipes is also unique.  It has a split design to allow for an opening to place around the part; so, you will not have to break or rethread the material.  They also use stainless-steel screws and stainless-steel shims.  For diameters up to 4” (102mm), they will come with a braided stainless-steel hose to supply compressed air to both halves.  The stainless-steel components give the units better corrosion resistance, higher temperature ratings, and more durability.

EXAIR manufactures the Super Air Wipes with two different body materials, aluminum and 303 stainless steel.  EXAIR stocks the aluminum models with inner diameters from 3/8” (10 mm) for wire and cables up to 11” (279mm) for large pipes and hoses.  The aluminum models have a temperature range good to 400oF (204oC).  We also stock the stainless-steel models from ½” (13mm) to 4” (102mm) inner diameters, and they have a temperature range up to 800oF (427oC).  If you require different diameters or materials, don’t be afraid to ask.  EXAIR also makes specials.

Super Air Wipe Kit

We also offer options with the Super Air Wipes.  We have kits to help get the most out of the Air Wipes.  A kit will include the Super Air Wipe, a filter, a regulator and a shim set.  The filter will remove bulk liquids and debris from the compressed air to keep the performance optimal.  The Regulator is used to control the force.  This helps to not over-use the amount of compressed air required for the job.  With a regulator, you can make fine adjustments to get the proper amount of air.  For coarse adjustments, you can add shims to increase the air flow and force.  They are easy to install on the Super Air Wipes to allow for applications to have more cooling, faster drying, and better removal for tough debris.  For cleanliness and control, the Super Air Wipe Kits would be recommended for your application.

Here are some additional advantages in using the EXAIR Super Air Wipes that I did not cover.  They are OSHA safe in dead-end pressure and noise exposure.  So, they are quiet.  We placed pre-tapped holes on each half of the bodies for easy mounting with brackets or attachments.  They do not have any moving parts or require any electricity to operate.  The non-contact wiping actions that the Super Air Wipe can provide helps to support cleaning items without affecting the surface finish.  Also, you won’t have to worry about replacing cloths or brushes that will slow production and wear over time.

With the creation of the EXAIR Super Air Wipes, uniform cleaning, cooling, and blowing around the outside of parts is a simple task.  You don’t have to worry about a variety of nozzles to target the circumference, or a fabricated blow-off device that will waste air and take much time out of your day.  A simple purchase of the Super Air Wipe is all you need.  You can order them from our website at www.EXAIR.com or call us at 800-903-9247.  If you need help in selecting the proper product for your application, you can contact an Application Engineer at EXAIR for help.

John Ball
Application Engineer
Email: johnball@exair.com
Twitter: @EXAIR_jb