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18 Inch Air Knife Blow-Off Systems from Nex Flow
The 18 Inch Air-Blade Air Knife Model 10018 Blow Off System from Nex Flow is easy to mount and maintain and reduces both compressed air consumption and noise levels.
The 18 Inch Stainless Steel Air-Blade Air Knife Model 10018S Blow Off System from Nex Flow produces a laminar flow of air along its length using the Coanda effect which entrains a large volume of air from the surrounding area along with the small amount of compressed air from the Air-Blade to produce an output flow up to 30 times.
Air-Blade Air Knife Blow Off System payback on compressed air savings can be as soon as a few weeks in some applications.
Nex Flow Mounting Systems for air knives and air amplifiers provide a convenient and flexible way to utilize the products for blow-off and cooling applications.
18 Inch Air-Blade Air Knife Features:
The low cost air knives are rugged with a multiple port design for mounting flexibility. It is coated for longer life compared to competitive products that advertise a full flowing air knife type of system.
18 Inch Air-Blade Air KnifeBenefits:
How The 18 Inch Air Blade Air Knife Works
Compressed air enters the air knife at the rear (or end) ports at (A). Air is entrained at point (B) by the compressed air stream that leaves the air knife from a small gap. The entrained air follows the coanda profile and along the front face (C) that directs the airflow in a perfect straight line at 90 degrees to create a uniform sheet of air along the entire length of the Air Blade TM air knife at it leaves the air knife at point (D). The amplified air stream maximized velocity and force is maximized as a well-defined sheet of laminar flow with minimal wind shear for reduced energy use in blow off and cooling.
Air Knife, Stainless Steel Air Knife, Air-Blade Air Knife Blow Off System from Nex Flow produces a curtain of air along the length of the application using the same "Coanda" effect utilized in our Air Amplifiers. There are no moving parts, with compressed air from a local production line source being used to amplify end entrain surrounding air. Output volumes almost twenty times higher than those at the input can be achieved.
Offered in aluminum or stainless steel and can be manufactured in any length from a combination of our standard sizes.
18 Inch Air Blade Air Knife Applications
Typical applications replace drilled pipe, or rows of nozzles used for blow-off, cleaning, drying or cooling.
Based on an Amplification Ratio of 30:1 the air flow out would be 30 times the above.
Compressed Air Flow Through A Hole In Standard Cubic Feet Per Minute
Special lengths of our Air-Blade Air Knife are available on special order including lengths combining several units.
Download .pdf File (will show cleaner image)
(Extra Middle mounting hole only on the 36" Air-Blade� 457mm from each end)
Air-Blade Air Knife comes with a standard machined .002" outlet gap which will work for 90% of all applications encountered. If greater force is required, a .002" shim may be installed to open the gap for greater flow. Materials of construction are either coated aluminum or stainless steel.
Standard Air Blade Air Knife Product Drawings:
1. From the chart showing air flow through a hole, assume we have a pipe 30 inches long with 1/16" holes spaced ½ apart with a total number of 59 holes. The air pressure in the system is 60 PSIG.
2. From the chart each 1/16" hole consumes 4.23 SCFM at 60 PSIG. Total air consumed is 59 X 4.23 = 249.57 SCFM.
3. From the Compressed Air Consumption Chart a 30" Air-Blade Air Knife consumes 2.7 SCFM per inch or 30 X 2.7 = 81 SCFM at 60 PSIG.
4. Assuming a compressed air cost of 30 cents/1000 standard cubic feet and an 8 hour day operation for 200 days per year, the Drilled Pipe Will Cost:
5. The Air-Blade Air Knife Will Cost:
6. The Savings Per Year using the Air-Blade Air Knife will be: