E-Vac for Epoxy Recycling

Recently, a manufacturer of custom magnetics called in about a special application. In the manufacturing of certain electronic systems, a very expensive, thick epoxy glue is used. They were exploring ways to be able to collect the excess after application.  They had used a system in the past and were looking to replicate it.  The previous system had an old boxy vacuum generator, and they asked us if we could provide a vacuum source that matched the performance specifications but in a more compact design.  After researching the specifications and a comprehensive comparison, we could offer the EXAIR model 810013 Inline E-Vac, generating up to 27 ” Hg of vacuum.  A basic sketch of the design concept is shown below-

Capture

By using the model 810013 to create a vacuum within the chamber, a strong suction can be generated at the tube inlet, strong enough to draw in the excess epoxy. The glue can be collected in the chamber for recycling and reuse, and because of the design, the glue does not pass through the E-Vac and cause any issues with build up or blockage that would hinder the performance, leading to the need to clean the unit.

In-LineE-VacFamily

The Many Sizes of E-Vac Models Available

EXAIR manufactures E-Vac’s for both porous and non-porous applications, as well as a line of Adjustable E-Vac Generators.  Smallest units use only 1.5 SCFM of 80 PSIG compressed air and the largest Adjustable E-Vac unit can pull 81 SCFM of air at open draw and 15″ Hg vacuum level setting.  With a wide range of sizes and types, there is a model available to meet your vacuum generation needs.

As a side note – the EXAIR Reversible Drum Vac, High Lift Reversible Drum Vac, Chip Trapper, and High Lift Chip Trapper all use this same basic principle of applying a vacuum to a chamber, but on a much larger scale, to turn a 5, 30, 55 or 110 gallon drum into an industrial liquid vacuum system.  The vacuum generating unit is of a different design, made specifically for the Industrial Housekeeping Products.

To discuss your process and how an EXAIR Intelligent Compressed Air Product can solve your toughest application issues, 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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Twitter: @EXAIR_BB

 

E-Vac For Lubricant Recovery

Over the last 3 months, I have been in contact with a customer, keeping track of an application that involved the EXAIR E-Vac.  The customer had reached out to us looking for some advice on how to solve a process problem. The operation is a drawing/stamping process, and the when the part exits the machine there is coolant that resides in a deep draw section, approx 0.4″ in diameter by 3.5″deep.  About 1 oz of coolant per part is retained, and over many 1000’s of parts, would add up to lost dollars and messy clean up.

The customer was looking for an automated process that would be able to draw out the coolant and direct the liquid back to the coolant reservoir, all while maintaining the current machine run rate. We settled in on the model 840015 Adjustable E-Vac Generator. The Adjustable E-Vac has a straight through pathway from suction through to discharge, allowing for fast evacuation times.  A simple turn of the unit changes the vacuum and flow levels to best match the needs of the application.  The Adjustable E-Vac coupled to a solenoid valve controlled by the stamping machine resulted in the automatic system the customer was looking for.

Adjustable EVac

Adjustable E-Vac Family

The customer ordered a unit, and based on the preliminary bench testing, it was approved for a production run trial. After some tweaking in the production environment, the unit was performing to spec, and was then subjected to a 100,000+ part run.  The results were a success!  Instead of the parts exiting onto an inclined conveyor, relying on gravity to drain and causing coolant to collect under the conveyor, the coolant could be removed in a controlled manner and sent back to the reservoir.  Less mess and no coolant loss.

EXAIR manufactures (3) types of E-Vacs – Low vacuum generators for porous materials, high vacuum generators for non-porous materials, and the adjustable type for flexible vacuum performance.  They are available in multiple sizes, to best match the vacuum requirements, while using the least amount of compressed air.

To discuss your application and how the EXAIR E-VAC can benefit your process, 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

Send me an email
Find us on the Web
Like us on Facebook
Twitter: @EXAIR_BB

Compressed Air Vacs have Advantages Over Electric Vacuums – Durability, Reliability, Noise Levels

Have you ever heard an electric vacuum toward the end of its life? It gets this high pitch annoying noise caused by the bearings going out.  I spoke recently to a customer who was hearing it about every two months.   This company cuts ceramic tiles with a diamond-tooth circular saw.  During this operation, a lot of dust is being created.  He would attach an electric vacuum to the dust port of the saw housing.  The vacuum was to remove as much dust as possible from the sawing operation to keep the area clean and the operators safe.  After about two months of operation, they would start hearing that “moan” from their electric vacuum.  The performance of the vacuum started to drop off, and it would allow more dust to collect in the saw room.  This was a hazard as it would make the floor slippery.  The operators then had to stop operations early to clean the floors at the end of each shift.  After their second electric vacuum failed, they started looking for a better alternative.

Heavy Duty HEPA Vac Family

Heavy Duty HEPA Vac Family

When they contacted me about their issue, I knew immediately which EXAIR product would serve their need very well. I suggested our new model 6399-30, 30 gallon Premium Heavy Duty HEPA Vac system for this operation.  The 30 gallon size is the smallest in the Heavy Duty HEPA family which made it easy to fit behind the saw table away from the operators.  The HEPA filter inside has an efficiency of 99.97% at 0.3 micron.  So, the dust will remain in the drum and not migrate back into the ambient air.  The EXAIR vacuum generator has no moving parts or bearings to wear.  It is made from a hardened steel construction which is very resistant to wear and abrasion from materials like ceramic.  The EXAIR design can generate a high vacuum level to draw dust material at an extremely high rate, and it only has a decibel level of 82 dBA.  With clean compressed air, this vacuum will last for years and years; not months.

As this company installed the Heavy Duty HEPA Vac into their system, the first thing that they noticed was how quiet it operated. The constant loud noise from their electric vacuum was gone, making it a better working environment.  They also noticed that the dust was being removed very quickly by the powerful vacuum pressure.  This meant that the amount of dust that could collect on the floor and equipment was greatly reduced.  Since the floors were cleaner longer, it decreased shut down times and removed the constant hazard of a slippery floor.

If you find that you are going through your electric vacuums or just would like to reduce the noise levels, EXAIR has a large line of Industrial Housekeeping Products. You can contact us to see if we have the right vacuum product for you.

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

The Trusty Reversible Drum Vac, 16 Years Later

This week a customer sent us a Reversible Drum Vac to refurbish. From time to time a Reversible Drum Vac may need (depending on cleanliness of the supply air) cleaning due to particulate from the compressed air line landing inside the air chamber of the Reversible Drum Vac. EXAIR regularly rebuilds, cleans and tests Reversible Drum Vacs that customers send in to have us return them to new condition. You can also easily refurbish the Drum Vac at your facility: Here is a link to our How-To video for cleaning your Reversible Drum Vac. This particular Reversible Drum Vac though was clearly special.

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16 Year Old Laser Marked Reversible Drum Vac

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16 Year Old Laser Marked Reversible Drum Vac

At first glance, the Reversible Drum Vac had been laser marked by the customer to permanently label their unit. The customer just so happened to be a laser marking shop, so I’m sure it was convenient for them. But digging deeper, the company originally purchased the unit in 1999, this Reversible Drum Vac could get its Learner’s Permit in most states. During the 16 years our customer was using the Reversible Drum Vac, we never heard from them. After 16 years they contacted us but not for a problem. They just wanted us to clean and inspect the unit to ensure maximum efficiency. This unit, though a bit dirty, was still operating very well. EXAIR put it through our refurbish process and brought it back to performance specifications that matched a new product.

The Reversible Drum Vac is a compressed air operated vacuum that attaches to a 55 gallon drum to create a vacuum that can also empty a 55 gallon drum in 90 seconds. The Reversible Drum Vac pulls a vacuum on the drum creating a siphon the pulls the liquid into the drum. With this technology the liquid never pass through the Reversible Drum Vac, which leads to its tremendous longevity. It is the perfect vacuum to empty coolant sumps, isolate contaminated liquids, or clean floor spills. The Reversible Drum Vac have no motors to wear out or impellers to clog so they last longer than their electrically operated counterparts.

Dave Woerner
Application Engineer
@EXAIR_DW
DaveWoerner@EXAIR.com

Award Winning HEPA Vac

Continuing my series of EXAIR award winning products for 2014.  Plant Engineering’s readers voted the Heavy Duty HEPA Vac a silver award for Environmental Health. The HD HEPA Vac differs greatly from most of the EXAIR products.  We often improve a work environment by reducing noise level from compressed air blow offs or limiting the energy usage of a facility by conserving compressed air, but when EXAIR introduced the Heavy Duty HEPA Vac, we entered a new area of environmental health.

hepafam_collection

High Efficiency Particulate Air standards are set by the US Department of Energy. Originally, the standards were created to protect workers, the public and the environment from particulate that may be found in DOE’s nuclear facilities. (For more information on HEPA filtration consult DOE-STD-3020-2005.) The Heavy Duty HEPA Vac filter meets the HEPA standards to filter a minimum 99.97% at 0.3 micron level.  Each filter is tested in strict accordance with IEST-RP-CC-007. After testing the filtration, vacuum and ventilation companies discovered the added benefit of using HEPA filtration is to remove particulate that may inflame allergies or asthmatic symptoms. Pollen, pet dander, and dust are physically too large to pass through the HEPA filter. For instance, most pet dander is 5 microns and will become trapped inside the circuitous air passage route inside the HEPA filter. Also, HEPA filters will even filter airborne pathogens.  Engineering Toolbox list several nominal particle sizes to give you the idea of scope. By meeting these strict standards, EXAIR’s Heavy Duty HEPA Vac can be used in a whole new industry where HEPA filtration is required.

Tries to imitate the late Billy Mays

But wait there’s more!

We haven’t even talked about the HEAVY DUTY DRY VAC component of the Heavy Duty HEPA Vac.  The Heavy Duty HEPA Vac features the same hardened alloy construction of the Heavy Duty Dry Vac.  This alloy holds up to abrasive materials such as garnet, crushed glass, sand or hard materials like stainless steel chips, pipe plugs, or brass piping caps.  We tested the conveying power of the Heavy Duty Dry Vac, it moved 32 pounds per minute of steel shot blasting media, 146% percent more than a standard Chip Vac.  With all this vacuuming power, it still maintains a surprisingly quiet 82 dBA of sound level.

The Heavy Duty HEPA Vac would be the perfect item to clean out that clogged filtration system, or to clean up that spilled kitty litter that will clog up a standard electrical vacuum. It will not blow tiny particulate all over your shop and it can help protect your personnel from airborne particulate.

Dave Woerner
Application Engineer
Davewoerner@EXAIR.com
@EXAIR_DW

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