Thursday 30 November 2017

Super Air Knives vs. Other Alternatives

There are many ways to blowoff, cool, and/or dry materials.  A few of these methods are the drilled pipe, an array of flat nozzles, using a blower driven air knife and the EXAIR Super Air Knife.  We’ll examine each in further detail, for blowoff of water after a bottling cleaning operation.  Testing was done at 60 PSIG of supply pressure.  The blower utilized a 10 hp motor and was a centrifugal type spinning at 18,000 RPM.  Sound levels were taken with product not present to test the sound of each of the blowoff types.

Drilled pipe is a common blowoff because it is very inexpensive and easy to make.  But drilled pipe performs poorly.  The low cost to make the drilled pipe is quickly outpaced by the inefficiency and high compressed air costs.  The holes are easily blocked and the noise level is excessive, both of which violate OSHA requirements.  Also, the air pattern across the length can be very inconsistent, with areas of low flow and areas of turbulent flow.
Flat air nozzles installed along a length of pipe is another inexpensive option, but it can be a poor performer.  The flat nozzles are available in many materials, from many manufacturers.  The flat nozzles do offer some efficiencies, but similar to drilled pipe, the operating costs and noise levels are high. Air pattern across the length can be inconsistent with areas of high and low flows, leading to incomplete drying or cooling. Also, many of these nozzles are made from plastic material which breaks or cracks when it it hit which causes additional expense and maintenance to replace broken nozzles.
A blower air knife can prove to be an expensive and noisy option.  Typically, the initial purchase price is high.  Operating costs are lower than the drilled pipe and flat nozzles and in line with the Super Air Knives.  The blowers can be very large and space for two 3″ diameter hoses requires extra mounting space compared to low profile other options. Noise levels are high, at 90 dBA.  Annual costs for bearing and filter maintenance can be significant.
EXAIR Super Air Knives performed exceptionally well in removing the water in one pass due to the strong, laminar flow of air.  Sound level was low at just 69 dBA, well within OSHA requirements for an hour 8 hour exposure time. Safe operation is assured, as the Super Air Knife design cannot be dead-ended.  Maintenance costs are low, as the Super Air Knife has no moving parts to breakdown or wear out.

Ultimately, the Super Air Knife is a low cost way to blowoff, dry, clean and cool.
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
TeleFax : 080- 2648 1309.
E- mail : [email protected] , [email protected]

Tuesday 31 October 2017

Super Blast Safety Air Guns: Powerful & OSHA Compliant


In some applications the force from a Heavy Duty, Soft Grip, VariBlast, or Precision Safety Air Gun may not be quite enough to get the job done. Not to worry! EXAIR’s Super Blast Safety Air Guns use our Super Air Nozzle Clusters and Large Super Air Nozzles and turn them into a handheld gun with the same strong blowing force.

The Super Blast Safety Air Guns are comfortable to hold with a soft foam grip. They’re safe to operate with all of the Super Blast Safety Air Guns incorporating EXAIR’s OSHA compliant nozzles and clusters. In addition, they also have a spring-loaded manual valve that will automatically shut off the compressed air if accidentally dropped.

Friday 4 August 2017

Super Air Knife-To avoid chips coming out from the work station, used as an air curtain

Recently, we worked with a Client, who has been involved mainly with fabrication of mild steel and stainless steel components and had a problem with workers being hit by chips coming out  from the work station. So you will have look to the below image. As there is no front end cover, so It was  tremendously unsafe and dangerous for workers to work in this circumstances.They contacted to Our company Vivek Engineers and our application engineers visited their place and after a case study,they reached to a solution to use Exair's 30" Super Air Knife.

As Exair's Super Air knife consists of a high intensity, uniform sheet of laminar airflow sometimes known as streamline flow across the entire length with hard hitting force.So, it easily blows away the chips which are coming out from workstation. Eventually,the workers are able to work with safe and the client is satisfied with 30"Super Air Knife to use in their application.

EXAIR offers the Super Air Knife in lengths from 3" to 108", with a 0.002" shim installed.  They’re ideal for most industrial and commercial blow off applications. If you have such an application, give us a call. 
Below Our contact details
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected] , [email protected]

CONTACT PERSON :
Mr. Durga Madhab Praharaj - Sales & Operations Manager
Mob : 097404 39220. E -mail : [email protected]

Thursday 27 July 2017

EXAIR Vortex Tubes: As Much Cold Air As You Need, As Cold As You Need It

Looking for a reliable, consistent flow of cold air, Vortex Tube is really the better way to produce it. There are no moving part, the air flow and temperature from a particular model, set to a specific cold fraction, is only influenced by the compressed air supply pressure & temperature.
Pressure is easy to control, all you need is a suitable regulator.  Temperature can be a variable, depending on your type of compressor, if you have a dryer system (and what type it is,) and sometimes, ambient conditions…if, for example, a long pipe is run through a very hot environment like a foundry or a blast furnace operation.  In cases where supply pressure and/or temperature can be limitations, a higher capacity Vortex Tube, set to a lower Cold Fraction, may be specified.  Which brings me to the user inquiry that inspired today’s blog…
This particular customer uses our Model 3215 Vortex Tubes (15 SCFM, 1,000 Btu/hr) to provide cooling to analyzer systems that monitor certain quality parameters in their manufacturing processes.  The ability to precisely control the temperature in these systems makes for repeatable and accurate measurement of these parameters.   Their compressed air supply in this area is regulated to 80psig, they have a refrigerant-type dryer and climate-controlled facility, so their supply temperature is a consistent 70°F.  You couldn’t ask for better conditions for a successful Vortex Tube application, and they’ve worked great, for years.

Now, due to a plant expansion, they’re installing some of these analyzer systems in a location where the compressed air supply is limited to 60psig.  The required cooling capacity is going to be the same, so the Project Manager reached out to us to see if they could get the same amount of cooling with this new pressure limitation.  Here’s how they’re doing it:
Exair publish the rated performance of Vortex Tube products for a supply pressure of 100psig.  The Model 3215 Vortex Tube consumes 15 SCFM @100psig and, when set to an 80% Cold Fraction (meaning 80%…or 12 SCFM…of the 15 SCFM supply is directed to the cold end,) the cold air will be 54F colder than the compressed air supply temperature.  Here’s the performance table, so you can follow along:
Now, their supply is at 80psig.  Since air consumption is directly proportional to absolute supply pressure (gauge pressure PLUS atmospheric, which is 14.7psi at sea level,) we can calculate their units’ consumption as follows:
(80psig + 14.7psia) ÷ (100psig + 14.7psia) = 0.83 X 15 SCFM (@100psig) = 12.4 SCFM (@80psig)
So, with a 50°F temperature drop (from a supply @70°F,) they were getting 12.4 SCFM of cold air at 20°F.
As you can see from the table above, they’ll only get a 46°F drop at 60psig…and the flow won’t be as high, either.  So…we’ll need to get more air through the Vortex Tube, right?  Let’s use a little math to solve for what we need.
We still need 20°F cold air from 70°F compressed air, so, at 60psig, we’re looking at a Cold Fraction of ~70%.  And we still need 12.4 SCFM, so:
12.4 SCFM ÷ 0.7 = 17.7 SCFM @60psig (required supply)
Our Model 3230 Vortex Tube uses 30 SCFM @10opsig…at 60psig it’ll consume:
(60psig + 14.7psia) ÷ (100psig + 14.7psia) = 0.65 X 30 SCFM (@100psig) = 19.5 SCFM (@60psig)
That’s about 10% more flow than they needed, theoretically, which was close enough to start.  From there, they “dialed in” performance by regulating the supply pressure and Cold Fraction
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected] , [email protected]

Monday 3 July 2017

Cooling Gelatin Pills Using The Mini Cooler

Our Principal recently worked with an OEM on a cooling application for a gelatin pill forming machine they designed for their customer. In their machine design, the gelatin film leaves an extruding machine then travels between 2 punch rollers to form the pills. After the pills are formed, they are supposed to drop onto a chute feeding a conveyor to carry the pills to the bottling/packaging area.egree quick release elbow connection, 1 aluminium wand ( drum not included).

The problem they were having was the film was retaining heat which caused the pills to occasionally stick to the roller, resulting in rejects and lost production time. They were looking for an economical way to blow cold air across the rollers and film but were concerned about putting too much demand on their customer’s compressed air system.
After reviewing the photos and discussing the details, Our Principal recommended they use Exair's Model # 3308 Mini Cooler System with dual point hose kit. The Mini Cooler provides a 50°F temperature drop from the incoming supply air temperature and provides 550 Btu/hr. of cooling capacity. The system includes a swivel mag base for easy installation while the dual point hose kit would allow them to direct the cold air to blow across both rollers from a single device. Compressed air demand is minimal, at only 8 SCFM @ 100 PSIG, alleviating their concern for the customer’s compressed air system.
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected] 

Tuesday 30 May 2017

Internal Mix Atomizing Spray Nozzle Used In Feed Additive Process

An agricultural customer was looking to replace the spray nozzle used in their feed additive process. The soy oil/beeswax solution they are applying to the feed, is slightly viscous (close to 100 cP) which seems to be clogging the tight clearances inside the current nozzle, resulting in varying flow rates and an erratic spray pattern. They had tried to contact the current manufacturer several times for a solution but were unhappy with the lack of assistance they were receiving, not to mention the long lead times of 6-8 weeks for a replacement.

After further discussion, they confirmed they weren’t as concerned with the flow rate or spray pattern, as they were with the nozzle potentially getting clogged.  They were able to obtain some internal dimensions of the existing nozzle and after further review, Exair recommended they use Exair's Model # AF1030SS Internal Mix Flat Pattern Atomizing Nozzle as a replacement. This nozzle has larger inside diameters which would reduce the potential for clogging. The Internal Mix Atomizing Nozzles mix the liquid and air inside the air cap and produce the finest atomization. The flow rate can be changed by adjusting the control valve on the nozzle and/or by adjusting the liquid pressure. Internal Mix nozzles are capable of handling fluids up to 300 Centipoise. 

When considering an Atomizing Nozzle for an application, there are some general parameters that can be helpful in making the best selection.
  1. Do you have a pressurized liquid source?
  2. What is the fluid viscosity?
  3. What spray pattern best fits the process?
  4. How much flow (GPH/LPH) do I need?
If you have an application requiring a fine mist of atomized liquid spray, please contact an application engineer for assistance.
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected] , [email protected]

CONTACT PERSON :
Mr. Durga Madhab Praharaj - Sales & Operations Manager
Mob : 097404 39220. E -mail : [email protected]

Beat the Heat with EXAIR Cabinet Coolers!

As we begin to approach the heat of summer , we begin to break out the flip-flops, swimsuits, and warm weather attire. If you’re not a fan of the warmer temperatures, this may not be your favorite time of year. For me, I can’t wait to spend some time outdoors and enjoy all of the activities that summer has to offer. Whether you like the heat or not one thing is certain, the electrical enclosures within your facility most certainly do not.


EXAIR’s Cabinet Cooler Systems were designed specifically to rectify these issues within your facility. Utilizing Vortex Tube technology, the Cabinet Cooler produces cold air from an ordinary supply of compressed air. This cold air keeps the enclosure free of debris and moisture and is easily installed in minutes through a standard electrical knockout. The Cabinet Cooler Systems are available with Nema 12 (IP54) ratings and are also available in Aluminum, 303 Stainless Steel, and 316 Stainless Steel construction for Nema 4 (IP66) rated enclosures. For systems that are not able to be mounted on top of the cabinet, we also have Side Mount Kits available in Aluminum, 303 Stainless, and 316 Stainless.


These systems are available with cooling capacities of anywhere from 275-5,600 Btu/hr. To make things much easier for you, Exair offers a Cabinet Cooler Sizing Guide that will allow us to recommend the most suitable model for your cabinet. With a few quick measurements, we’ll be able to determine the exact heat load that we’ll need to dissipate and offer you a quick and easy solution. If you’re experiencing heat related issues somewhere within your facility or remember the troubles that they caused you last year, contact an Application Engineer today and we’ll see to it that this summer your cabinets remain cool!

Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected] , [email protected]

Wednesday 17 May 2017

Super Air Amplifiers for Cooling Injection Mold

When working with a cooling application, many customers will immediately look to the Vortex Tube and Cold Gun product lines. While this may be the best solution for some applications with smaller areas to cool, cold air from a Vortex tube based solution is not the best method for large parts or larger areas that exceed a footprint of approximately 2″ x 2″. For larger areas, we have other options for many cooling applications. EXAIR’s Super Air Amplifiers and Super Air Knives are also very effective at reducing the temperature of a part without requiring cold air.

Cooling is a relative concept based on the starting and finishing temperature. What feels “cool” to a human being does not necessarily mean the same thing as “cooling” a part or material. Due to the ability of the Super Air Knives and Super Air Amplifiers to entrain large amounts of ambient temperature air, we can move a lot of air volume across the surface of the target part and quickly lower the temperature.

A simple example I like to use is blowing on a hot cup of coffee just as its been brewed. The temperature of the air coming from your mouth is around 98.6°F, the same as your body temperature. Coffee can be as hot as 185°F when fresh. Due to the temperature differential between your breath and the hot coffee, we’re able to achieve a reasonable amount of cooling just by simply blowing across the surface. Typically, when the target temperature of the part or material needs to be around ambient temperature or higher; the best solution for cooling is going to be either a Super Air Amplifier or Super Air Knife.

To illustrate the above concept even more, recently I was working with a customer that needed to cool a silicon injection mold. The mold had two sides and the customer was looking for a method of cooling it down between cycles. The mold cavity surface was approximately 400°F and they wanted to get it down to around 150°F. They were familiar with the EXAIR Cold Gun as they use them across their facility in various secondary or post-molding drilling operations. They had a spare and decided to hook it up and blow the cold air across the face of the mold to see what happens. The volume of air from the Cold Gun was not enough to sufficiently cool the entire mold, so he reached out to EXAIR for assistance.

Based on the dimensions of the mold and understanding the target temperature to be 150°F, we settled on a system of (2) 120224 4” Super Air Amplifier Kits. One was placed above each side of the mold. As soon as the mold opened, they activated the Super Air Amplifiers and were able to pull the surface temperature of the mold down to an acceptable level. Time is money in any manufacturing operation. Companies that produce injection molded parts will look for any way to improve their process. By implementing a procedure to cool the mold more quickly, they are able to boost their productivity gains and become more profitable.

The Super Air Amplifier Kit comes with an Auto-Drain Filter to keep the air clean and dry, a pressure regulator to allow you to dial in the precise level of airflow, and a shim set that allows you to make gross adjustments to the flow. The Super Air Amplifier is available in (5) different sizes with ¾” up to 8” diameter outlets and flow rates from 219 SCFM to 9,000 SCFM 6″ from the outlet. They are capable of achieving an amplification ratio of up to 25:1 from the compressed air supply. The laminar airflow from the unit minimizes wind shear to produce sound levels that are typically three times quieter than other air movers.
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area,
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected] , [email protected]

CONTACT PERSON :
Mr. Durga Madhab Praharaj - Sales & Operations Manager
Mob : 097404 39220. E -mail : [email protected]

Monday 15 May 2017

Replacing Unsafe Open Pipes with High Pressure Air Nozzles


   (Open pipes present unsafe working conditions and continuous pressure drops in compressed air systems)

Let’s talk for a minute about pressure drops. Normally when the topic of pressure drops is raised, it comes in a context related to proper plumbing and volume supply.  (If there are significant pressure drops within a compressed air system, especially those which reduce volume flow, problems will arise with compressed air driven devices.)
But, there is another important aspect of pressure drops which relates to open pipe blow-off, a common homemade remedy for blow-off applications. This aspect has to do with the available compressed air pressure at the exhausting point from the pipe or nozzle.  In the case of an open pipe, it requires so much compressed air volume that, there can be a continuous pressure drop from the compressor to the open pipe.  However, when a nozzle is installed onto a compressed air pipe, there is a restriction to the flow and the entire pressure drop takes place across the nozzle.
What this means for the blow-off solution is a higher velocity blow-off and a more powerful force from the airflow, with less compressed air consumption.

To think of it another way, imagine the flow of water from your garden hose. If the hose is open-ended and the water is fully on, the flow will be high and the force will be low.  But, when you install a nozzle onto the end of the hose the flow reduces and the force increases.  This is because the pressure drop in the system is taking place across the nozzle rather than the entire system.

This type of a scenario was taking place in the image shown at the top of this blog. The plastic lines connected to the aluminum manifold were fully open on the end, providing a continuous pressure drop and poor blow-off performance.  This, coupled with the maximum operating pressure of similar types of hose being 35 PSI, led to a poor performance in this application.

The solution for this customer was to replace these open pipe blow-offs with EXAIR model 1126 Flat Super Air Nozzles and 12″ Stay Set Hoses, model 9262. The flat airflow of the 1126 Super Air Nozzles provide a highly efficient and forceful blow-off, and the Stay Set Hoses allow for articulation of the nozzles into any position needed.
By replacing these open pipes this customer saved compressed air, added safety (open pipes present an operating hazard per OSHA Standard CFR 1910.242(b)), and improved the performance of their operation.
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected]

Friday 12 May 2017

EXAIR Line Vac, Air Operated Conveyors, Expand to Include Sanitary Flange Models

Lightweight and durable aluminum is the most popular choice, but we make them in stainless steel (Types 303 and 316) for heat and corrosion resistance. For extreme heat, the High Temperature option affords protection to 900F (482C) in either 303SS or 316SS.

EXAIR’s Air Operated Conveyor  product line just expanded, making it easier than ever for a wide range of industries to solve an ever growing range of bulk conveyance applications. Before we get to that, let’s look at just how versatile the Line Vacs are:

The standard Line Vac has been making bulk conveyance as easy as it could get for years now. They come in sizes from 3/8" to 5", and all you need is a hose to move material from point A to point B.

When rigid pipe is preferable to hose, our Threaded Line Vacs offer the same performance: 
These come with male NPT threads from 3/8" to 3" . They’re also available in aluminum, 303SS and 316SS, and High Temperature versions, same as the standard Line Vac.

They come in sizes from 3/4" to 3", with options for slip-on hose or threaded pipe. They’re also made of a hardened alloy for superior abrasion resistance.

If you need high power for higher conveyance rates, longer distances, or very dense material, the Heavy Duty Line Vacs are what you’re looking for.

Light Duty Line Vacs are aimed at applications implied by the name…when smaller volumes of low density material don’t require all the head & flow generated by the standard or Heavy Duty models, these are as quick & convenient as the rest, and come in sizes from 3/4" to 6".

 

The newest additions to the Line Vac family are the Type 316 Stainless Steel Sanitary Flange models:
Also known as Tri-Clamp or Tri Clover, these connectors have a variety of advantages beneficial to certain industries: Quick to make up & take apart. No nooks or crevices, so they’re easy to clean. Wide variety of fittings, pipe and tubing are readily available.


Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected] , [email protected]

Thursday 4 May 2017

High Temperature Line Vac Helps to Recondition Ceramic Balls for a Reactor

It was a talk to an operation manager about his fixed-bed reactors.  These reactors are large tanks filled with different layers of material.  The main component of the bed consisted of catalyst pellets which were placed in a centralized layer in the middle of the tank.  Above and below the catalyst pellets, they used different sizes of ceramic balls to create a gradient buffer.  This was important to disperse the gas to utilize the entire catalyst bed and reduce the possibility of channeling.  The tanks were designed with a dump flange mounted at the bottom; so, when the catalyst material was used up, they could dump all the material from the tank and replenish.  In recycling the reactors, they could reuse the ceramic balls after they have been reconditioned.

As per discussion the details further about the reconditioning process, the material from the reactor was dumped into drums and separated manually.  The catalyst material was discarded; leaving the ceramic balls.  The ceramic balls came in three different diameters, 6mm, 13mm, and 25mm.  To separate these, they would slide three empty wire-meshed trays into the oven, and placed a specific diameter into a corresponding tray.  Once the oven was filled with the ceramic balls, they would heat the oven to 400 deg. C.  This would burn off any dangerous material that was collected on the surface from the process within the reactors.  After the heat cycle, they would have to wait approximately one hour until the ceramic balls were cool enough to handle.  After the cooling period, they would use a shovel to remove the ceramic balls from the trays.

The reconditioned ceramic balls were placed in storage drums and kept until they had to recycle another reactor.  The removal of the ceramic balls from the oven would take an additional half hour to complete.  The entire reconditioning process was labor intensive, time consuming, and ergonomically a safety issue.  For each oven, they were only getting two cycles per day to recondition the ceramic balls.  With the number of reactors that they had, they needed to either decrease the downtime for the oven, or purchase another batch oven.


High Temperature Line Vac
After discovering the EXAIR website, they were intrigued with the Air Operated Conveyors (Line Vacs).  If they could remove the ceramic balls at a much higher temperature, then this would allow them to reduce the cycle time.  The EXAIR Air Operated Conveyor is a great product for moving bulk items over a short distance without manually having to shovel it, transfer it, or lift it.  With the customer’s goal to minimize the downtime with the batch oven, I recommended the EXAIR model HT6064 2” Stainless Steel High Temperature Line Vac.  With some standard PPE (Personal Protection Equipment), they could remove the ceramic balls from the oven without waiting for it to cool.  The model HT6064 has a maximum temperature rating of 482 deg. C and a throat diameter of 45mm; large enough to move all three sizes of the ceramic balls.


The Line Vac, or Air Operated Conveyor, operates by using compressed air to generate a vacuum.  It does not have any motors or moving parts to wear, and the inline design makes it easy to attach a transfer hose to the vacuum and exhaust ports.  Personnel could now stand near the oven; stick the high temperature duct into the tray, remove all the ceramic balls, and transfer them to a nearby drum.  By using the High Temperature Line Vac, they were able to reduce the oven down-time to only 15 minutes.  This was plenty enough to reach the goal of increasing the cycles per day. As an added benefit, the back-breaking work of shoveling was removed; thus, increasing the health and safety of the workers.
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected] , [email protected]

Wednesday 19 April 2017

Removing Chips from a Plastic CNC Router


An application in need of a method to collect plastic chips from the CNC router tables shown above.  These machines are used for precision cutting, but face a problem when the cutting edge of the machine comes into contact with the chips and debris created during normal use.
The end user had considered a blow off device such as a nozzle or Air Knife, but this raised concerns with material collection.  Ideally, the customer of this application wanted to be able to capture the chips and debris for recycling.
So, By looking into a method of removing the chips with a Line Vac, conveying the debris to a stationary drum for collection and recycling.  This type of solution has proven to be effective many times in the past, as shown in the image below. A Line Vac can be mounted at the cutting head to vacuum chips and debris as they are created by the cutting process.
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected][email protected] , [email protected]

Tuesday 18 April 2017

Super Ion Air Knife Removes Foil Dots In Lid Cutting Operation

In a food manufacturer about a packaging line they were having issues with.  The plant fills continuous rows of thermo-formed cups which is then sealed with a single foil lid. Once sealed, a machine cuts the row to separate the cups, which creates small scrap pieces of foil. After the cutting operation, they try to collect as much of the waste trim as possible but some small pieces of foil, they call “dots”, cling to the surface of the cup and cutter due to static charge.  The company installed a vacuum collection hood in this area, to try and help keep the foil pieces or any dust from falling onto the cup during the process. While this did help somewhat, some dots would remain and eventually fall off further down the line, making small piles that needed to be manually cleaned to avoid potential jams, which slowed down their production cycle.

The cups are filled and separated on a 44″ wide, mesh-screen conveyor with individual lanes to process multiple rows of cups. After being cut, the cups are moved to the inspection area and then packaged for shipment.  I recommended they mount a 48″ Super Ion Air Knife above and below the cups and direct the airflow to the end where the vacuum collection hood is located. The idea is, as the ions eliminate the charge, the small foil dots will release and the laminar airflow would keep the parts moving toward the vacuum hood, thus removing all foil trim and preventing any piling of trim further down the production line.
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected][email protected]

Wednesday 12 April 2017

Cooling Nylon Parts and Brushes with the Adjustable Spot Cooler


A robotics company called to Exair looking for a recommendation for a cooling device to use in their nylon plastic machining operation. They have a six axis robot, fitted with abrasive brushes, that “cleans” the part profiles as they are being moved from the milling area to the inspection location. The brushes were effective in removing the fines and particulate from the parts but they were starting to experience an increase in the amount of rejects as the brushes were generating heat, causing deformities to the profile.
Their initial thought was to use a liquid type method of cooling but with the parts having some small recesses and cavities that might trap fluid, this wasn’t going to be a reliable option for them. Another area of concern with using an air cooling device, was if the airflow was too forceful, the smaller parts they process may have the potential to “move” while being held by the robotic arm which could scratch or blemish the part.
After further conversation about the process, Exair's Application Engineer recommended they use our Adjustable Spot Cooler in the application. The Adjustable Spot Cooler incorporates a Vortex Tube to produce a cold airstream as low as -30°F with an ambient air supply temperature. Using the temperature control valve, they can easily adjust the temperature drop and the volume (SCFM) of air being exhausted, to “dial” in the device to provide an adequate level of cooling while controlling the outlet flow to not disrupt the hold on the part itself. With the integral magnetic base and flexible tubing, they could easily mount the unit to the arm of the robot while directing the cold air to blow across the brushes and the part to keep them cool.
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected][email protected] , [email protected]

Monday 20 March 2017

Sanitary Flange 316 Stainless Steel Line Vacs

we are now stocking four different pipe sizes of Sanitary Flange 316 Stainless Steel Line Vacs. We are offering these in the following sizes, 1-1/2″, 2″, 2-1/2″, and 3″ Sanitary Flange.   The performance is the same as our Stainless Steel Line Vacs,  but now it is even easier to install in sanitary flanged piping systems.  No need to get adapters or have specialty shops weld flanges on.

The new Line Vacs are available for purchase on their own or in a kit which includes the Line Vac, a mounting bracket for the Line Vac, pressure regulator and filter separator. The only parts you provide are the clamps, gaskets and compressed air supply.

Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected] , [email protected]

Thursday 2 March 2017

Cooling Hot dolly with Exair's Cold Gun and Air Amplifiers

Recently, Toyota Kirloskar Motor Private Limited, Bangalore had a requirement to cool their hot dolly with carries painted body.They contacted us regarding their requirement.They were searching for a product with compressed air which can cool the Dolly with carries painted body and cooling the body within 3 Minutes(from 100 Deg to 40 Deg C).
The Length X Width   of the dolly is around  5 Mtr X 0.3 Mtr. So, We suggested them to use  20 numbers Cold Gun ( Model-5030) and 20 numbers Air Amplifiers(Model-120024) mutually to increase the cooling efficiency. The Cold gun and Air amplifier could cool the target simultaneously. After the demo, The client was satisfied with the Exair product and got solution to cool the Dolly which carries painted body.
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 3297 0358, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : [email protected] , [email protected]