Wednesday, 27 April 2022

Line Vac Video: Air Operated Conveyor Conveying Raw Coffee Beans


We recently have taken a request from a customer in the coffee industry, looking for an efficient solution: conveying raw coffee beans. We were confident in the ability of the Line Vac to transfer those beans from ground bag to cleaning & roaster process at higher level with quick conveying rate. Check out the video below  to see the test we conducted with our Model 6083, 1-1/2” Line Vac:

If you’re looking to convey bulk materials using the Line Vac, we have reservations regarding the performance. You can also send a sample of your material  for testing here at Vivek Engineers. We’ll be happy to put the conditions of your application to the test and share the results with you. If you’ve been manually transferring bulk material and are looking for a safer, reliable, and efficient solution the Line Vac is the right tool for the job. With a variety of sizes, we’re able to address countless applications and achieve a wide variety of conveying rates.

The conveying rate of the Line Vac is easily adjusted by regulating the input pressure supplied to the Line Vac. Not only you can reduce the necessary compressed air demand but also control the amount of material flow. Higher pressures will move  more material, while lower pressures will reduce compressed air consumption.

Vivek Engineers
#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076 
Ph : 080 -  2648 1309, 4170 1145.
Mob : 097404 39220






    


Tuesday, 8 March 2022

Engineered Air Nozzles and Jets – There is a Difference.

 EXAIR’s Engineered Air Nozzles and Air Jets provide a superior solution to minimize compressed air usage and reduce noise levels for compressed air blow-off operations.

Air Nozzles and Jets – when compared to commonly used open copper tubes, open pipes, and commercially available air nozzles the compressed air savings can be as high as 80%. With less compressed air, sound levels are greatly reduced.  A 10 dBA noise level reduction is typical.  All EXAIR Air Nozzles and Jets meet OSHA guidelines for dead end pressure and sound level exposure requirements.

EXAIR Nozzles are designed and manufactured to take advantage of the Coanda (wall attachment of a high velocity fluid) effect which can amplify the airflow up to 25 times. The compressed air exits through the small holes on the nozzle which entrains the surrounding air. The effect from this is a high volume, high velocity blast using less compressed air.  EXAIR manufactures many sizes and styles of air nozzles from the smallest, but quite powerful Atto Super Air Nozzles to our largest 1-1/4 NPT Super Air Nozzle.  We also offer Flat Super Air Nozzles, and the Back Blow style nozzle for cleaning out tubes, pipes, channels or holes from 1/4″ to 16″ in diameter.

All of our Air Nozzles are engineered to meet or exceed OSHA Standard 1910.24(b) for 30 PSIG dead end pressure, they cannot be dead-ended as there is always a route for the air to escape so the outlet pressure will never reach 30 PSIG. In addition, our products are going to meet the OSHA Standard CFR 29 – 1910.95(a) for allowable noise exposure levels.



EXAIR Air Jets also utilize the Coanda effect to produce air motion in their surroundings.  A small amount of compressed air (1) is throttled through an internal ring nozzle above sonic velocity.  A vacuum is produced, pulling in large volumes of surrounding, or ‘free’ air, through an around the jet (2).  The exit flow is the combination of the two air sources (3).




 Exair manufactures Air Jets in two types, High Velocity, and Adjustable with materials of construction of brass and Type 303 Stainless Steel.  The High Velocity Air Jet uses a changeable shim to set the gap, controlling the force and flow of the air.  The Adjustable does not use a shim, and has a micrometer gap indicator and locking ring to allow for varying force and flow performance.

If you would like to discuss blow off, noise levels, dead end pressure or any of Exair intelligent compressed air usage solutions, Please contact us.

Vivek Engineers
#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076 
Ph : 080 -  2648 1309, 4170 1145.
Mob : 097404 39220






    


Friday, 25 February 2022

Custom Vortex Tubes by EXAIR

 EXAIR’s Vortex Tubes are a low-cost, reliable, and maintenance-free solution to a variety of industrial spot cooling problems. With just an ordinary supply of compressed air, the Vortex Tube produces two streams of air: one hot and one cold. This is achieved without any moving parts or refrigerants!!


The Vortex Tube is capable of achieving a temperature drop/rise from your compressed air supply ranging from -50°F to +260°F (-46°C to +127°C). Flow rates range from 1-150 SCFM (28-4,248 SLPM) and refrigeration of up to 10,200 Btu/hr. With all Vortex Tubes constructed of stainless steel, they’re resistant to corrosion and oxidation ensuring you years of reliable, maintenance-free operation.


In addition to providing a range of different Vortex Tubes available to ship same-day from stock, EXAIR also has a few options available for cases where a stock Vortex Tube may not be the right solution. The standard Vortex Tube is suitable for use in environments with ambient temperatures up to 125°F (52°C) due to the plastic generator and Buna o-rings. For more extreme environments and ambient temperatures up to 200°F (93°C), we install a brass generator and replace the Buna o-rings with Viton seals.

All standard Vortex Tubes are adjustable. A small valve is located at the hot air exhaust end of the tube. Using a flat-tipped screwdriver, you can adjust the amount of air that is permitted to exhaust from the hot end. As more air is allowed to escape, the temperature at the cold end of the tube drops even further. The volume of air at the cold end as the temperature drops will also decrease. The percentage of air exhausting from the cold end relative to the total air consumption is referred to as the cold fraction percentage. Lower cold fractions will produce lower temperatures, but there won’t be as much volume. Finding the proper setting for your Vortex Tube can take some adjusting.

As we all know, if there’s a knob to turn, button to press, or adjustment that can be made an operator is inevitably going to tinker with it. Day shift will blame the night shift, night shift blames the day shift, and it can present a problem when the Vortex Tube has been specifically tested and set to achieve the desired cold fraction. If you know the cold fraction you need, but would prefer to prevent it from being able to be adjusted, EXAIR can install a precisely drilled hot plug to set the cold fraction percentage to your specifications and eliminate any potential for it to be changed.

If you’d still prefer to keep the adjustability, but don’t have the capabilities to measure and set it yourself, we can also set any Vortex Tube to the desired cold fraction with the adjustable valve and send it to you ready to be installed. We’ll provide you with a special model number so you can rest assured that any time you need another it’ll come set to your specification.
If you have a unique application and would like more information on getting a special Vortex Tube, contact an Application Engineer today.

Vivek Engineers
#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076 
Ph : 080 -  2648 1309, 4170 1145.
Mob : 097404 39220






    


Thursday, 6 January 2022

Static Season is in Full Swing, Super Ion Air Knives can Remove the Shock!

 

The Gen4 Super Ion Air Knife is a powerful static eliminator that prevents jamming, tearing, shocks and dust build up by neutralizing static and blowing away the debris.

They combine the quiet and efficient Super Air Knife with the compact design of the rugged Gen4 Ionizing Bar resulting in a total solution to remove static electricity from plastics, webs, sheet stock and other product surfaces. Removing the static helps reduce or eliminate the process issues that the static electric causes, allowing for greater production speeds, improved product quality and a cleaner product. Some of the issues static causes include, dirt and dust buildup on surfaces, misreads for sensors, poor quality from ink jets, poor print quality on printed surfaces, and personnel getting shocked.

The Gen4 Super Ion Air Knife floods an area or surface with static eliminating ions. With a uniform airflow across its length, misalignment to critical surfaces like webs is avoided.  The force can be adjusted from a light breeze, to a full out blast of air. The Gen4 Super Ion Air Knife is electrically powered, is shockless and has no moving parts.

How It Works

How The Gen4 Super Ion Air Knife Works

In the diagram above, compressed air flows through an inlet (1) into the plenum chamber of the Gen4 Super Ion Air Knife. The flow is directed to a precise, slotted orifice. As the primary airflow exits, it creates a uniform sheet of air across the entire length, pulling in in surrounding air (2). An electrically powered Gen4 Ionizing Bar (3) fills the curtain of air with positive and negative charges. The air stream delivers the static eliminating ions to the product surface (4) where it instantly neutralizes static and cleans off dust and other particulates.

The Gen4 Super Ion Air Knives are powerful tools, and very quickly dissipates 5kV of static even at low compressed air supply pressures. At 5 PSIG, only 3.7 SCFM (0.3 BAR, only 105 SLPM) of compressed air per foot of length is required!!  Sound levels are also very low, resulting in quiet operation.

Added Features –

  • Compressed Air Inlets are provided on each end and the bottom of the Super Air Knife
  • Thicker shims can be installed easily if more force is needed.
  • Emitter points are durable stainless steel
  • The high voltage cable is armored to resist cuts and abrasion, and has integral grounding.  Threaded bayonet connector is fully assembled and ready to use
  • Electromagnetically shield cable protects sensitive electronics
  • Gen4 Ionizing Bars and Power Supplies are UL Component Recognized to U.S and Canadian safety standards and are CE and RoHS compliant
  • Power Supplies are 115/230 VAC selectable and come with 2 or 4 outlets
  • Standard lengths from 3″ to 108″ (76mm to 2743mm) are offered, and custom lengths are available to meet your process needs

Successful applications include web cleaning, pre-paint dust removal, shrink wrapper machinery, printing equipment, package cleaning and bag opening/filling operations.

If you have questions about Gen4 Super Ion Air Knives, other types of Static Elimination products,  or any of the 16 different EXAIR Intelligent Compressed Air® Product lines, feel free to contact us.

Vivek Engineers
#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076 
Ph : 080 -  2648 1309, 4170 1145.
Mob : 097404 39220






    





Saturday, 23 October 2021

Neutralizing Static in the Printing Industry

 

Cooler temperatures are right around the corner which can lead to low humidity and in turn, static electricity that can wreak havoc on manufacturing processes. One industry that deals with this the most is printing and paper manufacturers. Watch a video on how the Super Ion Air Knife can eliminate static in printing processes and keep operations running smoothly.
Vivek Engineers
#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076 
Ph : 080 -  2648 1309, 4170 1145.
Mob : 097404 39220






    

Monday, 18 October 2021

Chip Trapper Overview

We all know the drill, you want to run your coolant for as long as possible because that liquid is not cheap! Especially if you have several machines or even hundreds! But the results of running them longer than you should often stink, (pun intended) they turn sour, the lubrication properties start to diminish and you do not get the benefits you once got! Not to mention chips and small fines (which the stinky bacteria collect upon) can start to clog the system up. Here at EXAIR we had the same problem in our machine shop, so we designed the EXAIR Chip Trapper and use them to this day!


There are some machines which are capable of cleaning the tramp oil and removing any chips or shavings, but these tend to be very expensive and not very effective. Exair tested a few different methods here at EXAIR in  machine shop. As a result of these tests Exair determined that the best foot forward would be to develop something themselves. 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.

Here is a great overview video of the Chip Trapper Set up and operation!


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. 



 

Saturday, 16 October 2021

Empty and Fill Machine Sumps with the Reversible Drum Vac Systems

EXAIR has a variety of Industrial Housekeeping products for your specific applications. Let’s explore the capabilities of our Reversible Drum Vac (RDV). The RDV is a safe, maintenance free system and its purpose is to recover liquids, oils sludge and chips from machine sumps. Since it is reversible, it will also fill your sumps from a fresh drum of machining fluids. This system does not require electricity and runs on compressed air. The RDV is maintenance free as it has no moving parts.

The RDV comes in 2 models which includes a “High Lift” version of the RDV and creates a maximum lift up to 15 feet of water column. The RDV comes in 4 capacities of 5, 30, 55 and 110 gallon drums while the High Lift comes in 30, 55 and 110 gallon drums. Let’s now focus on the RDV and the options for purchase.


The first thing to consider when purchasing your RDV is the capacity which I just mentioned of 5, 30, 55 and 110. Once you decided the capacity we have 3 models to choose. The Model 6196 is your basic model and comes with the vacuum unit, stand pipe, vacuum hose and aluminum wand. It is the basics of what you need to empty and fill your machine sumps.

The model 6296 is the same as the 6196 but also includes drum dolly, ABS spill recovery kit, tool holder and all tools.


The model 6396 includes everything as described with the Model 6296 but also includes the drum, drum dolly, upgrade to heavy duty aluminum tools, ABS spill recovery kit, tool holder and air hose.


Kindly contact us for more details.


Vivek Engineers
#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076 
Ph : 080 -  2648 1309, 4170 1145.
Mob : 097404 39220