A little while back, I was contacted by a customer who was looking for a way to clean chips and debris out of tapped holes in an engine block. They were familiar with our products, having used them in several different areas in their plant, and had done some early research into our Air Nozzles.
They were considering using our small M4 Back Blow Air Nozzle in the process. The Back Blow Air Nozzles produce a 360° airflow that blows away from the end of the nozzle and in many cases, are the ideal solution for treating the inside diameter of hose, pipe, machined holes, etc. These unique nozzles, eliminate the concern of forcing particulate further down into a machined hole or the safety issue of blowing material out of the opposite end of an open tube or pipe.
In this particular case, having the material blown out of the hole increased the risk of possible cross contamination somewhere else in the engine block so they were also thinking of incorporating some type of recovery system like our Chip Vac or one of our Line Vacs but were concerned with having to use two separate devices.
Once again, EXAIR has the perfect solution, the Deep Hole Vac-u-Gun. The Deep Hole Vac-u-Gun features a small blow tube (1/8″ OD) that provides a small blast of air to dislodge or loosen foreign material while simultaneously providing vacuum to carry the debris away.
If you have a similar application or would like to discuss how an EXAIR Intelligent Compressed Air Product can help solve a unique situation, contact an application engineer for assistance.
They say time flies when you’re having fun. Maybe that’s why I found it a little hard to believe it’s been almost two years since we introduced the Back Blow Air Nozzles. They’ve become yet another “textbook” solution to a great many applications:
*Our Model 1006SS 1/4 NPT Back Blow Air Nozzlewon Plant Engineering Magazine’s “Product Of The Year” Bronze Award in 2015, and are successfully employed in a wide range of uses:
Blowing out splined bores by a gear manufacturer
Quickly cleaning out spindles between tool changes by a CNC machinery operator
Removing the last bits of powder from spent toner cartridges by a printing equipment recycler
*The Model 1008SS 1 NPT Back Blow Air Nozzleis becoming famous in hydraulic cylinder repair shops…after a cylinder bore is honed, one quick pass of the powerful blast it produces cleans bores from 2″ to 16″. We can even put it on the Model 1219SS Super Blast Back Blow Safety Air Gun, with a 1ft, 3ft, or 6ft extension.
If you want to see how they work, check out this video:
I could have sworn Lee Evans just made that video, but apparently, it’s over a year old now. Time does indeed fly, and I promise we’re having fun! If you’d like to find out more about how a Back Blow Air Nozzle – or any of our engineered compressed air products (old or new) – can make your operations quieter, more efficient (and hence, probably, more fun,) give me a call.
A few weeks ago I received an inquiry from a customer who was looking to blow water off the inside of a closed cylinder after a zinc bonding process. There are 8 parts that are placed on a manifold which is then inverted and sent into their current blow off setup that includes small open tubes that get inserted into each cylinder to try and blow out the water. This setup worked a little but the issue they were experiencing was the airflow coming out of the tubes was blowing the water up, which caused it to collect in the “bowl” of the cylinder and as the blow off tubes were removed, the water would start to leak back out and down the inside walls again. After the current blow off, the parts are manually removed and inspected for moisture content. If the parts are found to be outside of their tolerances, an operator uses a modified blow gun fitted with a small tube to manually complete the process.
After discussing the particulars with the customer, their needs were two-fold – first they needed a nozzle that wouldn’t push the air toward the end of the tube but something that would direct the air “backwards” so as they placed the nozzle inside, they could hopefully “pull” the liquid out as the nozzle is removed. The second concern was the cylinder had a small 0.390″ diameter opening so the nozzle would need to be small and powerful enough to be able to fit inside the part, while still providing effective blowoff.
Once again, EXAIR offered the perfect solution, our Model # 1004SS M4 Back Blow Nozzle. The Back Blow Air Nozzle produces an even, 360° airflow that is directed away from the end of the nozzle. At only 0.20″ in diameter, The Model # 1004SS is the ideal choice for treating the inside diameter of small hose, pipe, bores (up to 1″) or in this case, small enough to fit inside the opening of the cylinder. With this design blowing the air back away from the end, the water wouldn’t get trapped in the bowl but rather would allow the inside walls of the cylinder to be wiped clean while directing the liquid toward the opening so the water can be removed.
In addition to the Model # 1004SS M4, we also offer our Model # 1006SS 1/4″ NPT Back Blow Nozzle for use with 7/8″ to 4″ ID’s, as well as our Model # 1008SS 1″ NPT unit for treating large ID”s up to 16″, for larger scale applications
I was recently contacted by a testing facility which provides inspection services for fire extinguishers. As part of the inspection process, the empty fire extinguishers are pressure tested by filling the empty cylinders with water and raising the pressure to a specific PSI. After passing this test, they are emptied, turned upside-down, and fed over a drying rig. The drying rig (shown above) is a crude setup, using a brass tube with a few drilled holes.
In order to sufficiently dry the cylinders with this setup, they needed to be placed on the drying rig for long periods of time, sometimes for several minutes. This long cycle time was a waste of compressed air, and the end user wanted to find a better, more efficient solution.
The solution was to replace the drilled pipe with a ¼” NPT Back Blow Nozzle, model 1006SS. The angled orifices of this engineered nozzle force the air, and water in this case, from the cylinder. There is no longer a need to leave the cylinders on the drying rig for several minutes – drying is now accomplished in a fraction of the initial time. And, in addition to the improved cycle time, the engineered nozzle is able to reduce sound level from the drying rig.
Back Blow Nozzles can be used in a variety of applications. If you have a process which you think could benefit from an engineered nozzle solution and you’d like to discuss with someone, contact an EXAIR Application Engineer.