Getting A Little More Vacuum and Flow

Last week, a customer called and indicated that he was a long time user of the model 6013 High Velocity Air Jet.

Model 6013 High Velocity Air Jet

The customer was using the Air Jet to remove light trim scrap from a manufacturing process. The Air Jets utilize the Coanda effect (wall attachment of a high velocity fluid) to produce air motion in their surroundings.  A small amount of compressed air to the Air Jet is throttled through an internal ring nozzle at speeds above sonic velocity.  In the above image, this produces a vacuum at the left side, pulling in large volumes of surrounding air. By utilizing this vacuum pull and ducting the right side exhaust, air and scrap stream to a collection area. The customer assembled a small, efficient, and inexpensive scrap removal system.

The reason the customer had called in was there were some recent changes to the manufacturing process and needed a bit more vacuum force and flow to handle larger scrap and longer travel. We explored using a larger shim, but they were already using the largest size (0.015″.) We talked about the other products that EXAIR offers (Air Amplifiers, Line Vacs) that are used for scrap removal and conveyance.  But with any change, there are usually other modifications and approvals that must be dealt with in order to proceed. So we hit upon the Adjustable Air Jet, which is an adjustable version of the model 6013.

Model 6019 Adjustable Air Jet

The model 6019 Adjustable Air Jet utilizes an adjustable air gap in place of the fixed shim thickness.  This allows for greater air flow, which results in greater vacuum and conveyance distances. As is the case for many customers, we gathered some additional data to help this customer make a decision. We set up each of the units and tested them at maximum capabilities, and the model 6019 was shown to deliver upwards of 50% greater flow.  The customer felt certain this level of performance would handle what the changed process would require, and best of all, no modifications to any part of the set-up would be required, simply install the 6019 where the 6013 was currently placed.

The High Velocity Air Jet is also part of the model 1909 Blowoff Kit, and is also used in the model 8193 Ion Air Gun and model 8194 Ion Air Jet, for Static Elimination applications. Of course, each can be purchased as an individual item.

To discuss your application and how an EXAIR Intelligent Compressed Air Product can make your process better, feel free to contact EXAIR and myself or one of our other Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer

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Super Air Knife Used For Product Sorting

We recently announced the launch of the new 1126 1” Flat Super Air Nozzle, a marvel of its kind – compact, fully laminar, adjustable, and quiet.

Another laminar airflow product we manufacture is nothing new.  The Super Air Knife has been tried and tested for decades with new applications coming to light every day.  For example, in the sketch below we worked to integrate an EXAIR Super Air Knife (Aluminum) into a conveyor application in order to laterally move a low weight item from one belt to another.

SAK for product sorting

The air knife solution provides a vital function for multiple conditions in this application.  It allows for product movement in a fully lateral plane with little to no product disorientation in the event of a defect, or an overage on the main conveyor line.  Rejected items and workflow backup were causing unnecessary costs for this producer, and we were pleased to offer a solution.

When coupled with a PLC (similar to the EXAIR EFC – Electronic Flow Controller), the application was integrated with a time delay so that maximum energy efficiency was achieved.  No compressed air was wasted, and instantaneous blow off force didn’t have to be sacrificed.

This is an excellent example of how a disciplined and educated approach benefited an application.  If you know of an application with which EXAIR may be able to help, give us a call, email, or tweet.

Lee Evans
Application Engineer