Line Vacs- Air Operated Conveyors, and Much More

The EXAIR Line Vac is a tried and true device for conveying parts, materials, and waste – with no moving parts. The list of successfully conveyed materials in the application database is far reaching – including plastic pellets, scrap/trim, chips, pills/tablets, shavings, sawdust and granules.

The Line Vacs can be used for more than conveying large amounts of material from A to B. Recently, one of our automation customers found an application for the Line Vac in the design and manufacture of a custom fill machine.  The machine was commissioned to fill small, plastic cups.  To move the cups from the material staging area to the filler processing area, (10) of the 2″ aluminum Line Vacs were used.  Using a sensor to measure the stack height in each tube, the compressed air is triggered on/off to transfer a group of cups over to the filling area.  See photo below-

Line Vac Transporter

Other types of applications that Line Vacs have been used for include pick and place, small space ventilation, fine powder dispersion and light vacuum generation. Another popular use is to integrate into a machining process for waste removal of chips, shavings, and waste removal.

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1-1/4″ (32mm) Line Vac Mounted to Remove Plastic Shavings and Transport to Waste Container

The Line Vacs come in (3) types- Standard, Light Duty and Heavy Duty.  Also, (3) different end connections are available including smooth bore, threaded, and the new sanitary flanged. Depending on the model type, materials of construction may include aluminum, type 303 and 316 stainless steels, and a hardened alloy.  Special high temperature versions are available with temperature ratings up to 900°F (482°C.)

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To discuss your application and how a Line Vac or any other EXAIR Intelligent Compressed Air Product can improve your process, feel free to contact EXAIR, myself, or one of our other Application Engineers. We can help you determine the best solution!

Brian Bergmann
Application Engineer

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Light Duty Line Vac For Paper Trim Removal

Today I worked with a customer that manufactures a wide variety of material handling equipment including coil unwinders.  The engineer was calling because there was a special project for a coil unwinder that could handle a waste piece of paper trim.  As the metal coil is being unwound for delivery to a metal processing machine, the protective paper is pulled off and was to be collected into a waste receptacle for easy handling and disposal/recycling.  The engineer was hoping to replicate an existing system that used a hybrid blower system, with an extra compressed air nozzle, but in a simpler form.

Coil Unwinder

We proposed the use of the 4″ Light Duty Line Vac– shown below.130400The Light Duty Line Vacs offer an effective way to convey small and light materials a short distance. Like the standard Line Vac, the Light Duty Line Vac converts an ordinary hose or tube into a  conveyor for scrap, trim, and bulk materials.

When the process involves moving low volumes of materials over short distances, the Light Duty Line Vac is a great choice. The simplified (2) piece design offers effective conveying at a lower cost. As an added plus, the compressed air consumption is lowered to levels commensurate with handling the lighter materials, at lower volumes and short distances.  Using a pressure regulator to control the supply air allows for tuning of the transfer rate, and keeps air usage to the minimum amount needed.

The Light Duty Line Vacs are available with inlet/outlet diameters from 3/4″ up to 6″.  With no moving parts, maintenance free operation is assured.

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Light Duty Line Vacs – Available in 3/4″, 1″, 1.25″, 1.5″, 2″, 3″, 4″ and 6″ Diameters. All in Stock!

For other larger materials, higher transfer rates, corrosive environments, or abrasive materials, take a look at the other EXAIR Line Vac offerings including the aluminum, 303 and 316 stainless standard Line Vacs, the aluminum, 303 and 316 stainless steel Threaded Line Vacs, high temperature models, standard and threaded Heavy Duty Line Vacs, and lastly the new Sanitary Flanged 316 stainless steel type.

If you would like to talk about Light Duty Line Vacs or any of the EXAIR Intelligent Compressed Air® Products, feel free to contact EXAIR and myself or one of our Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer

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

Heavy Duty Line Vac Helps to Fill a Scrubber with Aluminum Pellets

Aluminum granules

An overseas company was using aluminum granules to react with caustic vapors inside a scrubber system.  The scrubber was a large tank that stood 4 meters high (13 feet), and it was located outside of the facility (see photo below).  Their current process was to refill the scrubber tank with aluminum pellets every three to four months to replenish the bed.  In order to refill, they would use a ladder with a bucket to pour the aluminum in the top opening of the tank.  This was a time-consuming process as well as an unsafe practice.  They contacted EXAIR to see if we could help them.

Scrubber Filling scenario

In discussing the details further about their application, the aluminum pellets were stored in 208L (55 gallon) drums.  The diameter of the pellets ranged from 5 to 15mm (0.2 to 0.6 inches) and the bulk density was 1500 Kg/m^3 (94 lbs/ft^3).  The maximum conveyance distance was 4 meters (13 feet) horizontally and 4 meters (13 feet) vertically.  The customer required a simple device to transfer the material from the drums to the scrubber tank safely and ergonomically at the fastest conveyance rate possible.

Heavy Duty Line Vac Kit

From the information above, I recommended the EXAIR model 152200; 2” Heavy Duty Line Vac Kit.  This vacuum generator is made from a hardened steel construction which is very resistant to wear.  It is also designed for higher vacuum levels to convey heavier materials at a faster rate.  The Line Vac is operated by compressed air to generate a Venturi vacuum, and the kit will include a filter, regulator and a bracket for cleaning, controlling and mounting.  The vacuum generator does not have any motors or moving parts to wear, and the inline design makes it simple to attach a hose to the vacuum and exhaust side.  Now, the operator could place the hose inside the scrubber tank, stand near the drum with the Line Vac; open a valve to regulated air, and watch the Line Vac move the entire drum of aluminum granules inside the tank.  Instead of multiple trips up and down a ladder to pour in buckets of aluminum, the operators can fill the scrubber tank easily and quickly.

The EXAIR Air Operated Conveyors, or Line Vacs™, are great tools for conveying items in a “bucket and ladder” type of application.  If your company manually moves product from point A to point B, you can contact an EXAIR Application Engineer to see if an Air Operated Conveyor could improve your process.  For the overseas customer above, the model 152200 Heavy Duty Line Vac Kit improved the manual operation of filling while reducing hazardous issues.

John Ball
Application Engineer

Email: johnball@exair.com
Twitter: @EXAIR_jb