2.5″ Line Vac Used In Plastic Part Recovery

I recently worked with an OEM who designed an injection molding machine for their customer. In their design, after the polypropylene parts are formed, they pass through a punch process which creates a scrap piece roughly 1-3/4″ in diameter and 6mm thick but it is very light in weight. The end user was looking for a way to recover these parts in an effort to reduce the amount of waste material in the process but needed an automated solution so they didn’t have to dedicate an operator to manually recover the parts and dump them in the recycle bin. The recovery bin is located close to 25 feet away on the other side of the machining area.

After further discussion,  I recommended they incorporate our Model # 6085 2-1/2″ aluminum Line Vac into their design. The 2.5″ Line Vac has a 2.25″ inside throat diameter which could easily pass the parts and convey them to the collection hopper.

Line Vacs connect to standard ID hose or pipe to create a powerful in-line conveyor

With the recovery bin being located outside of the processing area, they were going to have to run the discharge piping up and over the machines so they were needing something flexible to do so. In addition to the Line Vac, I suggested they use a 30′ section of our 2.5″ conveyance hose. Our conveyance hose is constructed of a durable, clear reinforced PVC, ideal for most general applications and we offer it in 10′ lengths up to 50′, in diameters of 3/8″ to 3″ ID.

Flexible clear PVC hose with smooth bore eliminates material build up.

 

When it comes to moving dry material, like small plastic parts or more abrasive materials like steel shot blasting media, the Line Vacs are the perfect, maintenance-free solution as they have no moving parts or motors to wear out. For help selecting the best option to fit your needs or to discuss how another product might be suitable for your application, give us a call.

Justin Nicholl
Application Engineer
justinnicholl@exair.com
@EXAIR_JN

Custom Air Amplifiers To Meet Most Any Requirement

When I think of “special” in regard to Air Amplifiers, I’m more inclined to think of the applications they can be used in. I mean, the Air Amplifier itself is about as straight-forward as an engineered compressed air product can be:

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

Considering the simplicity of the product itself, they can be used for a large variety of “typical” applications:

  • Cooling
  • Drying
  • Cleaning
  • Ventilation
  • Fume Exhausting
  • Dust Collection

There are no shortage of “special” applications either.  They’re used successfully in Air Operated Conveyance applications (when the stronger vacuum head of a Line Vac isn’t required) and we’ve even got a customer who uses one instead of an E-Vac Vacuum Generator for a “pick & place” operation…they’re picking up small, porous fiber discs (sort of like a coffee filter) one at a time, and the E-Vac wanted to pick up a good part of the whole stack, no matter how low they turned the pressure.  And of course, I can’t think of anything more special about Air Amplifiers than this:

You have to read it to believe it.  Follow the link and click on “Case Study: Roaring Banana Breath”

With fifteen distinct models to choose from in a range of sizes (3/4″ to 8″,) materials (aluminum or Stainless Steel) and even a High Temperature model that’s rated to 700°F (374°C), we’ve still made a fair number of Custom Air Amplifiers too…thirty-four, to be exact, as of this writing.

I won’t bore you with all the details – I can’t, actually, because some of them are proprietary* – but here are some “regular” examples of “special” accommodations:

  • Connections: EXAIR Air Amplifiers have smooth bores on the inlet & outlet plenums that you can hose clamp a hose (or round duct) to if you need to get air flow from, or to, one place or another.  Sometimes, though, they’re going in to an existing system, so we’ve made them with flanges (150#RF and Sanitary Tri-Clamp, for example) or threads (NPT or BSPP.)  If you want to use something other than a standard hose or duct line, we can help.
  • Material of construction: Our durable, lightweight aluminum Super & Adjustable Air Amplifiers are just fine an awful lot of the time.  Our type 303 Stainless Steel Adjustable Air Amplifiers will hold up to heat and corrosives.  We’ve also in PTFE (Teflon™) as well as a range of metal alloys to meet specific corrosion or wear conditions.  If your environment calls for a little something extra, we can help.
  • Assembly: Super Air Amplifiers are fitted with a stock shim that gives you published performance.  We’ve got other thicknesses, though, if you need more (or less) flow, though.  Adjustable Air Amplifiers are, well, adjustable…you just thread the plug in/out of the body until you get the results you want.  Sometimes the user knows what shim they want in a Super Air Amplifier, or what gap their Adjustable Air Amplifier needs to be set to, and we can assemble it accordingly.  If you have a ‘tried-and-true’ performance setting and want it met right out of the box, we can help.
  • Assembly, part 2: Good engineering practices call for lubrication on O-rings and threaded connections, and we use high quality, general purpose compounds when assembling our Air Amplifiers.  These are detrimental, however, in certain situations (silicone exclusion areas, I’m looking at you.) If certain chemicals or compounds are prohibited by your application, we can help.

*Let’s say you’ve done the “heavy lifting” to call out one (or more) of these special design features.  If we make a custom product (and that’s not just Air Amplifiers, by the way) using directions based on your time and labor, we’ll treat that product as proprietary to you, and you alone.

EXAIR has 208 catalog pages worth of Intelligent Compressed Air Products on the shelf…8 of those pages are our Air Amplifiers.  If you want to talk about customizing one to meet your needs, give me a call.

Russ Bowman
Application Engineer
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Custom Solutions For Conveying Dry Material

The ideal solution for conveying large volumes of material over long distances.

EXAIR’s Line Vac compressed air operated conveyors have no moving parts or motors to wear out, providing a maintenance free way to move dry material from one location to another. We offer several different types and sizes of Line Vacs like our Standard Line Vacs, available from 3/8″ up to 5″  or our Threaded Line Vacs, with NPT threaded connections up to 3″. The Heavy Duty Line Vac are constructed of Hardened Alloy for superior abrasion resistance, available in sizes from 3/4” to 3”, smooth and threaded connections or the Light Duty Line Vac commonly used for smaller volume, shorter distance processes, with sizes from 3/4″ to 6”. We even offer Sanitary Flange Line Vacs from 1-1/2″ up to 3″ for processes requiring frequent cleaning. All of these products are in stock, ready to ship from our factory here in Cincinnati, Ohio.

For over 34 years, EXAIR has been manufacturing Intelligent Compressed Air Products and we understand that there may be “special” cases where a stock product isn’t going to fit a specific need or requirement. What sets us apart from our competition is that we are able, with a little help from the customer, to engineer and manufacture custom made products, like the Line Vac Conveyors, to fit the specific demand of a unique application.

A few examples are shown below:

Flanged design, easy to install


This special 3/4″ Stainless Steel flanged Line Vac is being used to remove acidic vapors after a silicon wafer etching process. The flanged design allowed the user to direct mount to the machine, eliminating the need for other expensive modifications.

 

 

 

Chemical resistant construction for washdown areas

 

 

A customer was needing a special Line Vac for a chloride wash area due to the aggressive chemicals. We were able to make a custom 1-1/2″ Line Vac in PVDF construction for corrosion resistance and QF flanges for easy maintenance and cleaning.

 

 

 

Custom funnel design for small, granulated material like sugar or salt

 

This special funnel shaped Line Vac is being used in a a small packet filling operation. The unique design assured for a clog free process by keeping the granulated material moving through the tube.

 

 

 

 

 

Miniature size for confined workspaces

 

A company was needing a miniature version of a Line Vac to remove microscopic debris in an integrated circuit chip making process. The barb fittings allowed for easy installation into the small work place.

 

 

 

 

 

These are just a few examples of how we are able to meet the demands of a wide variety of extraordinary processes. Whether you are looking to move “common” materials like plastic pellets or maybe something “off the wall”, chances are we have the resources to provide an engineered solution to fit your need. Our application engineers are standing by, so give us a call and let us put our expertise to work for you!

Justin Nicholl
Application Engineer
justinnicholl@exair.com
@EXAIR_JN

 

 

Line Vac – Air Operated Conveyors

Convey parts, materials, and waste – with no moving parts!

The Line Vac is a fast, low cost way to convey pellets, scrap trim, textiles, bulk solids, food products, chips, and much more.  Simply connect to a standard hose, tube, or pipe and a powerful in-line conveyor is created.

Available in (4) materials – aluminum, 303 and 316 stainless steels, and a special hardened alloy, and (3) end connection types – NPT threaded, smooth bore, and the new sanitary flanged. Sizes range from 3/8″ up to a 6″. It is certain that an available Line Vac option will meet your process criteria.

For lighter materials and short conveyance distances, the Light Duty model is ideal, and for the most abrasive and heaviest materials over longer distances, the Heavy Duty style is available.

The Line Vacs offer many safety benefits, including eliminating the dangers of lifting heavy sacks and climbing ladders to fill hoppers, and with the 316 stainless steel sanitary flanged Line Vacs, food materials are kept enclosed and and separated and provides ease of cleaning.

Check out the video by clicking the photo below

Capture

The Line Vac works by having a small amount of compressed air injected through directed nozzles to produce a vacuum on one end and high output air flow on the other, with instantaneous response.  By using a pressure regulator, available as part of a kit or separately, the flow of the material transfer can be easily controlled. No moving parts or electricity assures maintenance free operation!

lvmatrix
Trim Scrap Removal

Conveyance rates are determined by the material bulk density, typical particle size, total distance of conveyance, including vertical rise, and the targeted transfer rate.  An EXAIR Application Engineer can assist you, and with the above information, recommend the right size and type of Line Vac to meet the desired results.

All catalog models are in stock and we ship same day with an order received by 3 pm EDT in the US and 2 pm EDT for orders shipping to Canada.

Our team of engineers can design a special Line Vac to meet many applications special requirements, from special materials such as PVC and PVDF to special end connections such as pipe flanges and barbed hose connections.  Let us know the special requirements of your process and we’ll design a solution.

Special Flanged LV
This special 3/4″ Line Vac was designed to evacuate fumes from a silicone wafer etching operation

To go with the Line Vac, we can provide a reinforced, heavy wall, clear PVC conveyance hose in lengths up to 50′.  Additionally, the Line Vac Drum Cover is a fine mesh, non-woven cover built to fit on the top of a 30 or 55 gallon drum.  It is designed to contain the material to the drum and allow the air from the Line Vac to escape.

6850drumcover
Drum Cover, for 30 and 55 Gallon Drums

If you have questions regarding the Line Vac, or would like to talk about any EXAIR Intelligent Compressed Air® Product, feel free to contact EXAIR and myself or one of our Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer

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EXAIR’s Heavy Duty Line Vac Resists Abrasion and Outperforms the Competition!

HDTHRlvFAMbg_500sq
Family of Heavy Duty Threaded Line Vacs

EXAIR’s line of Heavy Duty Line Vacs are our most powerful of our pneumatic conveyors. It is very similar to our standard Lind Vacs, but the generator holes have been drilled out to boost the performance. You can also modify a standard Line Vac to match the performance of a Heavy Duty. We have a great video here that shows you exactly how. In addition to an increased performance, the Heavy Duty Line Vac is constructed of a hardened alloy steel that helps to prevent premature wear that can occur when conveying abrasive media.

HDTLVpr_225wide
Heavy Duty Threaded Line Vac conveying steel shot

I recently worked with a customer that had a Clean Sweep vacuum that they had purchased and were experiencing premature wear on the conveyor that was installed on the system. They were using it to reclaim blasting media that they use for several of their processes in the facility. The conveyor that was installed in the Clean Sweep vacuum system was constructed of aluminum and was quickly wearing out. By the time they found EXAIR, they had already replaced this unit twice and were getting close to needing a third replacement. A quick search of the internet brought him to our blog page where he saw this blog post about the Heavy Duty Line Vac. A quick review of the drawing for the vacuum system and we were able to identify that a 2” Model 151200 Heavy Duty Threaded Line Vac would match up perfectly and allow for a quick and easy installation. They have a total of (3) of these systems in their warehouse and wanted to try one out first. Once the warehouse manager returned from vacation he intended to purchase another two to replace the other units before they too wore out. The operators were pretty pleased at the boosted performance that the Heavy Duty Line Vac offered, and management was pleased that they no longer have to worry about one of their vacuum systems wearing out. Another satisfied customer!

If you have a vacuum application with abrasive or harsh media, give EXAIR a call. Our team of Application Engineers is standing by ready to recommend the best solution for your application.

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

Moving Small Particles with a Heavy Duty Line Vac

The material in this hose is conveyed vertically over 7m using an EXAIR Heavy Duty Line Vac

The image above shows a test at a customer’s facility to move a small particulate to a height of 7m (23’) with an EXAIR Line Vac.  This particulate is used in the production of hand warmers and the end user needed a method to convey the material out of 55 gallon drums.

This same customer purchased a 2” Heavy Duty Line Vac from EXAIR in 2014 which is still in use and functioning well.  So, when it came time to find a pneumatic conveyance solution for this material, they knew where to go.

This is the material which needed to be pneumatically conveyed.

And, we knew just the questions to ask to determine the best Line Vac solution.  In order to do so, we had to determine the following:

  • Bulk density of the material
  • Size of the material
  • Conveyance height
  • Conveyance distance
  • Required conveyance rate
  • Available compressed air supply

Bulk density was rather low at 320kg/m³ (~20 pounds/ft³), with a particle size between 3-5mm (~1/8”-3/16”).  The conveyance height in this application was 5-7m (16.5-23ft.), with a distance of 1-2m (3.3-6.6ft) and a desired conveyance rate of over 4kg (8.8 pounds) per minute.

Testing with a 2″ Heavy Duty Line Vac

The customer ran a test with the 2” Line Vac they have on site and the results were excellent.  Their only question was whether they could achieve the needed conveyance with a smaller unit, thereby reducing compressed air consumption and operating cost of the application.

In this case the answer was clear that a smaller Line Vac could be used due to the low bulk density of the material.  By reducing the size of the Line Vac to 1”, or perhaps 1.5” we could reduce the compressed air consumption and still meet the required performance need.

EXAIR Line Vacs have, once again, brought a viable solution to this industrial facility.  If you have a similar application or would like to discuss pneumatic conveyance needs, contact an EXAIR Application Engineer.  We’ll be happy to help.

Lee Evans
Application Engineer

LeeEvans@EXAIR.com
@EXAIR_LE

Identifying Which EXAIR Line Vac You Have

I’ve written in the past about how to identify an EXAIR part, specifically how to identify a Vortex Tube. I recently ran into a very similar situation, only this customer was having difficulty identifying a Line Vac that was installed on one of his machines. The Line Vac was installed to remove a small pin from their part and convey it out to a separate bin for disposal. Rather than purchasing an additional machine, they were trying to expand the line and build one themselves. They reached some difficulty when trying to identify the EXAIR part that was installed and reached out to us for help.

line vac
EXAIR Model 6079 Line Vac

Our Line Vacs come stock in (4) different materials of construction: aluminum, 303 stainless steel, 316 stainless steel, and for our Heavy Duty models a hardened alloy steel for abrasion resistance. The hardware used on the aluminum models is a black oxide screw whereas the others all have stainless steel hardware. Since his had black oxide hardware, it was easy to discern that this was in fact an aluminum Line Vac. To differentiate between the 303 and 316 models, we make a small cut around the circumference of the part. The outer appearance of the Heavy Duty is easily distinguishable.

Once we’ve identified the material of construction we must measure the O.D. of the inlet and outlet. By cross-referencing this measurement with the dimensions in our catalog you can then identify exactly which model number Line Vac that you have. In this scenario, the customer had to remove the Line Vac from the machine to measure the O.D. of the cap. The manufacturer of the machine had turned down the outside of the outlet on the body. Fortunately, he sent us a photo which clearly showed that this was the case. Based on his measurement, I determined that he had an EXAIR Model 6079 that had been modified. He was able to immediately place an order for the replacement and it shipped that day!

LV dimensions
Chart from the catalog displaying Line Vac dimensions

If you have an EXAIR part somewhere in your facility that you’re struggling to identify, give an Application Engineer a call. Through a series of investigative questions (and hopefully the help of photos!) we’ll be able to determine the model number that you have and clear up any uncertainty.

Tyler Daniel
Application Engineer

E-mail: TylerDaniel@exair.com
Twitter: @EXAIR_TD