Sanitary Flange Line Vacs for Bulk Conveying

Piping systems have been a hallmark of human civilization for almost as long as people have been living in community with each other. Evidence of complex earthen pipe systems, with flanged fittings & asphalt sealants, date to 2700 BC. These were used for crop irrigation, potable water distribution, and wastewater removal in ancient civilizations from the Mediterranean to the Far East.

Over the centuries, new ways to use pipe led to new ways to make pipe.  Scientists and engineers figured out ways to make pipe stronger, lighter, cheaper, and in a variety of materials.  One of the more recent milestones is the development of sanitary piping and fittings.  The stringent cleanliness controls in certain industries (food and pharmaceutical, I’m looking at you) require highly corrosion resistant materials of construction.  The inside & outside surfaces of the pipe have to be finely finished so that they can be thoroughly and positively cleaned, with no crevices, “nooks & crannies,” etc., for material to gather or cling.  And since regular cleaning & sterilization is performed, the fittings must be able to be made & unmade in a manner that still provides for positive sealing when the system is restored to operation.

EXAIR Line Vac Air Operated Conveyors have always been well suited for applications like this.  With their open, unobstructed throats and smooth bores, they’re intuitively easy to clean, by design.  And we’ve made them, for years, in Type 316 Stainless Steel – the preferred material of construction for many food and pharmaceutical applications.  Many users in these industries were able to install them in sanitary piping systems by welding the flanges on our Stainless Steel Line Vacs, or by installing adapters on our Threaded Stainless Steel Line Vacs.

In the spring of 2017, EXAIR released the Sanitary Flange Line Vac with those same users in mind – eliminating the need to weld or thread flanges onto existing products.  They feature the same conveyance power as our Stainless Steel Line Vacs, and can even be modified to meet Heavy Duty Line Vac performance, if needed.  There are four sizes: 1-1/2″, 2″, 2-1/2″, and 3″…which covers the most popular size range of sanitary pipe systems.

While the sanitary piping systems are certainly most often found in those cleanliness-critical food & pharma type applications, other users incorporate them because of the smooth, continuous bore of the pipe and fittings, as opposed to a threaded pipe system, where the OD of the pipe threads into the ID of the fittings, causing a “step” in the throughput.  Because sanitary fittings mate via face-to-face flange seals, this eliminates that “step” which can make for a catch-point for certain items.  It’s for this very reason that a popular ammunition manufacturer uses sanitary pipe systems to convey shell casings…because they tumble with such turbulence in the air flow, they are especially prone to hanging up on any kind of catch-point.  So, they use sanitary piping & fittings, long radius elbows, and EXAIR Model 161150-316 1-1/2″ Sanitary Flange Line Vacs.

Air conveying of certain items, like these ammo shell casings, can be prone to clogging or jamming in systems where pipe, hose, and/or fittings are inserted into each other, creating catch-points.

EXAIR has a wide selection of engineered compressed air products that are “textbook” solutions for certain applications, but also make perfect sense for use in places you might not have thought of.  If you have a bulk material conveyance operation you’d like to discuss, give me a call.

Russ Bowman
Application Engineer
EXAIR Corporation
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Shells photo courtesy of hydropeek  Creative Commons License

Ion Air Jet Keeps Sensor Lens Clean In Tablet Manufacturing Process

Last week I worked with a tablet manufacturer on a bottling application where they were having static issues in a key area of their process. After the tablets are made, they travel to a vibratory feeder where they are counted with a photo-eye sensor before moving to the bottling line. The problem was the vibration of the feeder was causing the tablets to contact each other which created powder, dust and a static charge that aided the dust settling on to the counting sensor lenses.

Over the course of the production cycle, as the dust built up, they were experiencing incorrect quantity counts. Keeping the sensor lenses clean was inconsistent and time consuming for personnel. They were also dispensing too many and too few tablets into the bottles. As a means to try to contain and capture the dust, they placed plexiglass over the feeder bowls and installed a vacuum head a few inches after the sensor but this only helped a little as the operators would still have to manually clean the sensor. Looking for a more reliable, “hands-free” solution, they contacted EXAIR for assistance.

vibratory-feeder
Example of a vibratory feeder bowl used for counting.

When dealing with small area cleaning applications, the Ion Air Jet is the ideal solution as it provides a high volume of focused, ionized airflow. By incorporating the Ion Air Jet into this particular process, the customer was able to effectively eliminate the static charge on the sensor, releasing the particulate and directing it towards the vacuum head to be carried away. I recommended they operate the unit at low pressure as a way to control the outlet velocity so they wouldn’t disrupt the tablets process or overwhelm the existing vacuum flow.

NEW Ion Air Jet
Ion Air Jet is a low cost, reliable device for effective spot cleaning.

EXAIR offers a wide variety of Static Eliminators for various industrial applications. With help selecting the right product to fit your specific needs or to discuss a particular application, please don’t hesitate to contact one of our application engineers for assistance.

Justin Nicholl
Application Engineer
justinnicholl@exair.com
@EXAIR_JN

 

Vibratory  Feeder for  screw counting image courtesy of Solarbotics via Creative Commons.