A few weeks back I was contacted by a large baking company who was looking for a better way to pre-clean their cake and muffin pans before sending them to a wash cycle. After the pans exit the oven, an operator places the baked goods on a cooling conveyor then uses an air gun to blow out the residual crumbs. The pans are then placed on a separate conveyor and sent through a washer. The manual operation was taking a lot of extra time which resulted in reduced production.
After further discussion, I recommended they use our 24″ Super Air Knife. The Super Air Knife produces an even, high velocity curtain of air across the entire length of the knife which would provide a uniform blowoff of the pans, eliminating the manual cleaning. Super Air Knives are extremely efficient and quiet. Operating at 80 PSIG, using a 40:1 amplification rate of entrained ambient air to compressed air consumed, they require only 2.9 SCFM per inch of knife length while maintaining a low sound level of only 69 dBA and produce a velocity of 11,800 feet per minute.
The Super Air Knives are available in lengths from 3″ up to 108″ in single-piece construction and offered in aluminum, 303ss or 316ss construction, they are the perfect choice for small scale or wide coverage blowoff applications. To discuss a particular application or for help selecting the best EXAIR product to fit your need, contact an application engineer at 800-903-9247.
A machine manufacturer was working with a food company who was looking to design a blowoff station for their cookie making process. During the production cycle, the cookie dough is put into a former that pushes the dough through round dyes that forms several rows of cookies across a conveyor. As the cookies travel down the conveyor, they are topped with ground peanut bits and sent through a flash freezing process. It was after this process, the company was looking to install the blowoff station to remove any excess peanut bits but were concerned if the air velocity was too high, they may remove too much of the ground peanuts or possibly blow the cookies themselves off of the conveyor. Another area of concern was the amount of space available to install the station was limited, so they were needing something “compact” so they could design the machine to take the least amount of real estate as possible.
The machine designer was somewhat familiar with our Air Knives, but was unsure which design would best fit the customer’s needs so they decided to reach out for assistance. After discussing the particulars, I recommended our 36″ Stainless Steel Full-Flow Air Knife Kit. Of the 3 designs of Air Knife we offer, the Super, Standard and Full-Flow, the Full-Flow Air Knife produces the lowest outlet velocities, it is also our smallest profile offering at only 1.25″ x 1″ for stainless steel construction. The Full-Flow Air Knife provides a laminar flow of air the entire length of the knife and uses a 30:1 amplification rate (entrained air to compressed air) for efficient compressed air usage. By incorporating the pressure regulator included in the kit, they would be able to easily control the exiting air velocity to effectively remove the excess peanut bits without ejecting the cookies from the line.
For assistance in selecting the best Air Knife to fit your needs or for additional support with another application or EXAIR product, give me a call at 800-903-9247, I’d be happy to help.
I had the pleasure of working through an application in which uncooked hamburger buns are processed and baked. In the application, dough patties travel along a conveyor into an oven and a small, targeted blow off (technical term: “fluff”) is needed to remove excess flour.
When the flour is blown off of the dough, it is extracted by a system mounted above the conveyor. The difficulty for this end user was in finding a reliable, laminar solution with consistent blow off force.
By installing an EXAIR Super Air Knife (in the appropriate material), the uneven and inefficient blow off that was originally installed was replaced with a reliable and quiet solution. We were able to take a problematic application and turn it into a repeatable process. And, we were able to repeat success in another similar application at another point in the same facility.
If you have an application in which repeatable, reliable, efficient solutions are needed, contact an EXAIR Application Engineer.
Our customer has a process where they de-cap eggs which are used in a variety of processes ranging from large scale bakery uses to medical uses for developing vaccines. The problem is they are left with a reasonable amount of egg shell waste that needs to be cleaned up after each cycle in the de-capping process. The previous method relied simply on friction and gravity to get the egg shell to go into the direction the customer wanted.
The problem with this method is that reliability was quite low. Egg shell would remain inside the egg, inside the tooling and pretty much everywhere around the de-capping process. The customer wanted to clean things up in the process a bit and increase the reliability that the shells go where they want them to which is a waste container about 5 meters away from the de-capper. The rate of shell flow was about 20 kilos per hour.
The customer made a search on the Internet for Air Vacuum conveyors and found EXAIR Corporation. After a short discussion to find out the specifics concerning rate of flow, distance, density of the product and available air pressure, we were able to make a suitable recommendation.
We ended up recommending EXAIR Model 6963 (1-1/2” Stainless Steel Line Vac kit). Having the full kit available allows the customer to install the Line Vac using included bracket for mounting as well as the air filter/separator and compressed air regulator with gauge to allow for accurate tuning of the air pressure to get just the right amount of suction from the Line Vac unit.
The customer purchased the recommended kit and installed on their machine. They have claimed the reliability has gotten to the point where the problem has nearly gone away. They still had some issues with the blades used, which they intend to sort out as a next step in their process of continuous improvement.