Super Air Amplifier Increases Airflow In Vaccum Hood For Fume Extraction

A couple days ago I  took a call from an extrusion company who was looking to increase the airflow in their plating operation. They manufacture several different shapes and styles of aluminum extrusions by the way of 8 large extrusion presses. On one of the presses they make a specialty line of products that are sent to a finishing operation to be anodized.

Above the anodizing process tanks they use a vacuum hood to capture fumes and send them to a scrubber system so the air can be cleaned before being exhausted. They were starting to see an increase in the level of VOC (Volatile Organic Compound) gases in the area and, after some internal testing, determined the existing system wasn’t moving enough air through the system for the gases to be adequately delivered to the scrubber tank.

Example of a scrubber system

After further discussion, the customer ordered our Model # 120022 2″ Super Air Amplifier to test under our Unconditional 30 Day Guarantee.  Air Amplifiers are one of the most efficient products in the EXAIR catalog. Using a patented internal shim, they use a small amount of compressed air that passes through an internal chamber where it is exhausted through a thin gap at high velocity. This directed airflow creates a lower pressure at the intake side which draws in a large amount of free air. The 2 combining air flows result in a large volume of “amplified”, high velocity exhausting airflow, making them ideal for increased air movement.

Air Amplifiers entrain enormous amounts of “free” air, at ratios of up to 25:1!

If you have an application where you need to increase airflow or if you’re looking to vent or exhaust noxious fumes, an Air Amplifier is the ideal choice. For help selecting the best Model or to discuss a particular process, please contact an application engineer for assistance.

Justin Nicholl
Application Engineer
justinnicholl@exair.com
@EXAIR_JN

 

Pueblo Chemical Agent-Destruction Pilot Plant Agent Processing Building courtesy of PEO ACWA via creative common license.

 

EXAIR’s Vac-U-Gun: Blowoff or Vacuum with Just One Gun!

Now through the end of May, EXAIR is running a promotion on the Industrial Housekeeping Products that includes a FREE Vac-U-Gun with any purchase of an Industrial Housekeeping Vacuum System. EXAIR’s Vac-U-Gun is a low-cost solution to a wide variety of industrial housekeeping problems. The Vac-U-Gun has a durable die cast construction and no moving parts to replace or wear out.

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Vac-U_Gun cleaning up shavings after a sawing operation

In addition to being easy to use, the Vac-U-Gun is also more efficient than ordinary blow guns. By injecting a small amount of compressed air through directed nozzles, a vacuum is then produced on one end and a high output flow on the other. The amplified outlet flow through the Vac-U-Gun is 12 times the compressed air consumption of the gun.

The Vac-U-Gun is capable of both vacuuming material, as well as being operated as a blow gun. In vacuum mode, the work surfaces can be easily cleaned by vacuuming the debris away rather than blowing it off of the surface. Rather than simply moving the material around the shop floor, it can be contained and transferred to a waste receptacle using the 10’ vacuum hose, or straight into the filter bag.

vac u gun orientation

Switching from vacuum mode to blow mode can be achieved in just a matter of seconds. To change the Vac-U-Gun from vacuum to blow mode, simply remove the threaded cap and change the orientation of the generator inside. Since the Vac-U-Gun has a large 1-1/4” diameter air outlet, it covers much more surface area in less time compared to traditional air guns. This can help to reduce the time needed for a variety of different blowing, cooling, or drying applications. Due to the nature in which the Vac-U-Gun entrains ambient air, it allows for more force and flow through the gun at a minimal compressed air consumption.

vac u gun kits

The Vac-U-Gun system is available by itself, or in one of three different kits. It can be used with or without the 10’ (3m) vacuum hose or the filter bag. Various vacuum accessories are included in the kits to accommodate a variety of different materials and applications. If you’re looking for a versatile gun that can help boost productivity in a number of applications within your facility, look no further than the Vac-U-Gun.

Tyler Daniel
Application Engineer
E-mail: TylerDaniel@exair.com
Twitter: @EXAIR_TD

The Case for the Chip Vac

EXAIR Chip Vacs come in a range of sizes, and options, to meet the needs of most any clean up job.

The season for spring cleaning – spring, that is – is upon us (here in the Northern Hemisphere anyway) so it’s time to start looking for ways to make the task as easy and hassle-free as possible. That’s my take, anyway…and if you feel the same trepidation (or maybe even dread) as me, then this blog is for you. If you are one of those people who LIKES cleaning (you know who you are,) there’s something here for you too.  Without further ado, let’s talk about the EXAIR Chip Vac Systems.

The first thing you should know is that, like all EXAIR Intelligent Compressed Air Products, Chip Vac Systems are compressed air operated.  Why is this important?

*Safety – there’s no electric power cord or cable to trip over, damage, or get wet…all of which can be an electrocution hazard.

*Consistency – unlike a typical shop vac, which has a motor driven impeller/propeller to generate the vacuum flow, the Chip Vac creates powerful direct flow action from the compressed air supply.  With no moving parts in the way, there’s nothing to trap debris or clog the line.  If it can fit through the hose, the Chip Vac can suck it into the drum.  Every time, all the time.

*Reliability – electric motors can overheat and burn out if you run them continuously for long periods of time – or if you start and stop them frequently.  Not so with the Chip Vac…it’s pulling rated vacuum and flow as soon as you cut in air to it.  And if you supply it with clean, dry air, the Chip Vac will operate darn near indefinitely, maintenance free.

At EXAIR, our motto of being “easy to do business with” applies to not only all aspects of Customer Service and Technical Support; it’s even integral to our systems design.  What does this mean for the Chip Vac?

*Versatility – we make Chip Vac Systems for 30, 55, or 110 gallon drums.  If you don’t already have an open top drum to install one on, we can supply the drum too.

*PortabilityDeluxe Chip Vac Systems come with a dolly for your drum, so you can roll it wherever you need it.  The 30 Gallon Chip Vac Systems are compact enough to fit through just about any passageway that you can walk through.  But in tighter constraints…

*Portability, part 2Mini Chip Vac Systems come complete with a 5 gallon drum that can be easily carried or lifted to just about anywhere you need it to go.  The Deluxe System even comes with a dolly, for total portability.

*Resourcefulness – because they fit standard drums, they’re easy to move from one drum to another.  This is of particular value to machine tool operators who work with different materials: they can use the Chip Vac on one drum to vacuum up aluminum chips from one job, and then move it to another to clean up stainless steel chips from another job.  This makes recycling quick, easy, and profitable.

If you’d like to find out more about how EXAIR Chip Vac Systems – or any of our Industrial Housekeeping Products, can improve the efficiency and safety of your cleaning tasks (Spring or otherwise,) give me a call.

Russ Bowman
Application Engineer
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EXAIR Heavy Duty Dry Vac: Overview

Heavy Duty Dry Vac Family

When it comes to industrial vacuums, wouldn’t it be nice to have a durable, long lasting vacuum that is quiet?  There is such a vacuum that has these qualities; the EXAIR Heavy Duty Dry Vac System.  This vacuum system has no moving parts, no motors to fail, or bearings to wear.  They only require compressed air to operate.  The Heavy Duty Dry Vac is used to vacuum solid materials like plastic, sand, and even denser materials like steel shot.  The vacuum pumps are made from a hardened alloy construction to resist wear and abrasion, and it is designed to generate a strong vacuum level measuring -60” H2O (-15 KPa) at 80 PSIG (5.5 Bar).  To accommodate the multiple types of industrial applications, EXAIR offers the Heavy Duty Dry Vac Systems with different options and drum sizes.

The unique design of the Heavy Duty Dry Vac is incorporated in the modified lid that will fit onto a standard 55-gallon, 30-gallon, or 110-gallon drum (209L, 114L, or 418L respectively).  A 0.1-micron filter bag mounts in the center of the lid to allow excess air to escape and to contain the contamination inside the drum.  The large surface area of the filters allows for extended use before replacement while the high efficiency will keep the fine particles from re-entering the environment.  Under the drum lid, EXAIR used some features to help reduce the noise level even further.  We added a silencing foam and an extended hose.  This will muffle the noise and direct the contamination toward the bottom of the drum.  With these additional features, the noise level is only 82 dBA at 80 PSIG (5.5 bar).  Measure that against any electric vacuum.

Heavy Duty Dry Vac System

The Heavy Duty Dry Vac Systems come in three different options to best fit your application.  The standard option comes with the drum lid described above and a latching ring to attach to the drum.  It also comes with 10 feet (3m) of an anti-static hose, 20 feet (6m) of a compressed air hose, an aluminum chip wand, a hose hanger, a gauge, and a manual operational valve.  This option is available with three different drum sizes.  For example, model 6197 is for the 55-gallon drum (209L), model 6197-30 is for the 30-gallon drum (114L) and model 6197-110 is for the 110-gallon drum (418L).

Deluxe Heavy Duty Dry Vac System

The second option is the Deluxe Heavy Duty Dry Vac System.  This option will include all the items in the standard option plus aluminum tools, a tool holder and a drum dolly.  The upgraded aluminum tools include a floor tool, crevice tool, skimmer tool with detachable brush, and a two-piece double bend wand.  They are easily attached to the hose for quick cleaning of material spills.  The Deluxe system is a great option for getting into tight areas, hard-to-reach places, and large floor areas.  This option is also available in three drum sizes.  For example, model 6297 is for the 55-gallon drum (209L), model 6297-30 is for the 30-gallon drum (114L) and model 6297-110 is for the 110-gallon drum (418L).

Premium Heavy Duty Dry Vac System

If you do not have a drum to use in your facility, no problem.  EXAIR offers a steel drum in the Premium Heavy Duty Dry Vac Systems.  The Premium package has all the items in the Deluxe option plus a heavy-duty steel drum.  We offer the Premium option for all three sizes as well.  For example, model 6397 will include the 55-gallon drum (209L), model 6397-30 will included the 30-gallon drum (114L) and model 6397-110 will include the 110-gallon drum (418L).

If you get tired of throwing away your electric vacuums for burned up motors, you should try the EXAIR Heavy Duty Dry Vac System.  They will definitely extend the useful life, make it much quieter to operate and vacuum denser heavier materials quickly.  For U.S. and Canadian customers, we offer a 30-day unconditional guarantee to try the units.  If you need help to determine which Heavy Duty Dry Vac option would best suit your application, you can contact an Application Engineer at EXAIR.

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

A Brief History of the Air Compressor

Essentially compressed air technology was first used with the knowledge of how to start a fire.  Humans learned that to get the fire started, blowing helped the process, healthy human lungs can generate approximately .02 to .08 bar or .3 to 1.2 PSI.

At the beginning of the metallurgical age (approximately 3000 B.C.) a higher volume of air than what human lungs could produce was required to the reach the temperatures required to melt and form metals such as copper, tin, lead, etc.  This need lead to the hand-operated bellows, the first mechanical air compressor.  Approximately 1500 years later the more efficient foot powered bellows was developed.

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The foot powered bellows was followed by water powered bellows and was the mainstay for more than 2000 years.  However as blast furnaces came into being the need for compressed air increased.  This lead John Smeaton in 1762 to design a water wheel that powered a blowing cylinder and this began to replace bellows.  In 1776 John Wilkinson developed an efficient blasting machine and this was the beginning for mechanically powered air compressors.

As time progressed the idea of transmitting energy via compressed air became acceptable.  This idea was demonstrated around 1800 when the newly invented pneumatic rock drill was used to tunnel 80 miles under Mt. Cenis to connect Italy & France by rail.  This was an extraordinary feat for the time and garnered global interest.  This event perpetuated great interest into pneumatic powered devices  and brought us the air powered motors, clocks and even beer dispensers!

While compressed air is capable of transmitting energy long distances and performing tremendous work it also referred to as the 4th utility in industrial plants due to its cost.  We at EXAIR have been promoting compressed air conservation and safety using highly engineered products for 35 years!  Our products wring the maximum of energy out of every SCFM fed to them by using air entrainment and the Coanda effect.  Not only are we conserving your compressed air we offer products that are quiet and can’t be dead ended which prevents air embolisms.

If you are interested in discussing conserving compressed air and/or compressed air safety, I would enjoy hearing from you.

Steve Harrison
Application Engineer

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Dirty Coolant in, Clean Coolant Out – EXAIR’s Chip Trapper Extends Coolant Life

In a machine shop one of the most dreaded tasks is always cleaning out the coolant sumps of the CNC machines. Over time, chips and shavings can make their way up into the coolant lines resulting in a clog. The coolant flow slows down or stops entirely, resulting in premature wear of expensive cutting tools, imperfections in the parts, or unacceptable product finish. When this occurs, if it is even noticed right away, the machine has to be stopped and valuable production time must be spent identifying the location of the clog and removing it.

Another problem, one anyone working around CNC machines can attest to, is the rancid coolant smell that is a result of bacteria building up in the stagnant cutting fluid. Regularly cleaning this oil can reduce this smell, prevent premature tool wear or costly shutdowns, as well as extend the overall life of your coolant.

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There are some machines out there capable of cleaning the oil and removing any chips or shavings, but these tend to be very expensive and not very effective. We tested a few different methods here at EXAIR in our machine shop. As a result of these tests we determined that the best foot forward would be to develop something ourselves. Enter the EXAIR Chip Trapper. Using either a standard or High Lift Reversible Drum Vac to provide the vacuum source, the Chip Trapper is capable of filling or emptying a 55 gallon drum in less than two minutes. It is able to pick up both the liquid coolant as well as any chips or shavings that are suspended in the coolant. The liquid is forced through a filter bag inside of the drum which contains any solid materials while allowing the coolant to filter out into the drum. Switching the knob on the Reversible Drum Vac and the directional flow valve to empty will allow the clean coolant to be pumped back out of the drum and reused.

After implementing the Chip Trapper in our own shop, we were able to increase the life of the coolant by 6x. In addition to the increased coolant life, a process that used to take up to 2 hours per machine now takes less than 10 minutes. The Chip Trapper quickly and easily pays for itself.

The Chip Trapper is available in either 30, 55, and 110 gallon systems. It’ll also come with (2) 5 micron filter bags, other filter bags are also available ranging from 1 micron up to 200 micron filtration. Using a simple detergent, the filter bags can be washed out, cleaned, and reused multiple times. With no motors or impellers to clog or wear out, as well as no electricity requirement or shock hazard, the Chip Trapper comes with our standard 5-year Built to Last Warranty. Do yourself (and your machine operators) a favor and get a Chip Trapper on order today. They’re in stock, ready to ship and start saving you time and money!

Tyler Daniel
Application Engineer
E-mail: TylerDaniel@exair.com
Twitter: @EXAIR_TD

Intelligent Compressed Air: Utilization of the Coanda Effect

Henri Coanda was a Romanian aeronautical engineer most known for his work developing what is today known as the Coanda effect. The Coanda effect is the propensity of a fluid to adhere to the walls of a curved surface. A moving stream of fluid will follow the curvature of the surface rather than continuing to travel in a straight line.  This effect is used in the design of an airplane wing to produce lift. The top of the wing is curved whereas the bottom of the wing remains straight. As the air comes across the wing, it adheres to the curved surface, causing it to slow down and create a higher pressure on the underside of the wing. This  is referred to as lift and is what allows an airplane to fly.

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The Coanda effect is also the driving force behind many of EXAIR’s Intelligent Compressed Air Products. Throughout the catalog you’ll see us talking about air amplification ratios. EXAIR products are designed to take advantage of this phenomenon and entrain ambient air into the primary air stream. Compressed air is ejected through the small orifices creating air motion in their surroundings. Using just a small amount of compressed air as the power source, Super Air Knives, Air Nozzles, and Air Amplifiers all draw in “free” ambient air amplifying both the force and the volume of airflow.

Entrainment
EXAIR Intelligent Compressed Air Products such as (left to right) the Air Wipe, Super Air Knife, Super Air Nozzle, and Air Amplifier are engineered to entrain enormous amounts of air from the surrounding environment.

Super Air Knives provide the greatest amount of air amplification at a rate of 40:1, one part being the compressed air supply and 40 parts ambient air from the environment. The design of the Super Air Knife allows air to be entrained at the top and bottom of the knife, maximizing the overall volume of air. Super Air Nozzles and Super Air Amplifiers also use this effect to provide air amplification ratios of up to 25:1, depending on the model.

HowItWorks
Air Amplifiers use the Coanda Effect to generate high flow with low consumption.

The patented shim design of the Super Air Amplifier allows it to pull in dramatic amounts of free surrounding air while keeping sound levels as low as 69 dBA at 80 psig! The compressed air adheres to the Coanda profile of the plug and is directed at a high velocity through a ring-shaped nozzle. It adheres to the inside of the plug and is directed towards the outlet, inducing a high volume of surrounding air into the primary air stream. Take a look at this video below that demonstrates the air entrainment of a Super Air Amplifier with dry ice:

Utilizing the Coanda effect allows for massive compressed air savings. If you would like to discuss further how this effect is applied to our Super Air Knives, Air Amplifiers, and Air Nozzles give us a call. We’d be happy to help you replace an inefficient solution with an Engineered Intelligent Compressed Air Product.

Tyler Daniel
Application Engineer
E-mail: TylerDaniel@exair.com
Twitter: @EXAIR_TD