university project

[Pasquale Gallo]

Hello.
for my thesis I am working on a university project, precisely on a machine that I cannot give you too much info. But anyway I would need a hand on a particular part of the project, i.e. I need to choose nozzles that allow me to blow compressed air at least 9 bar for a minute. the problem is that I have a compressor of 24 liters with capacity of 220 l/m and pressure max 10 bar. the nozzles are mounted in series on a tube with an internal diameter of 6 mm, until now there have been provided of the nozzles simply converging with an output diameter 0,4 mm (those of the 3d printers to mean us). even to tell you that the jet does not last even a second and does not have all the force required. So I ask you have ideas and low budget solutions to suggest? (since a company has suggested a solution from 2000 euros)

 

[teseo]

hi, the cheapest thing is definitely a tank put after your compressor and obviously before the nozzles, run the compressor until reaching the 10bars then turn off and turn on below the 9.5, but the problem will be the encumbrance of the tank......
you need to calculate how much air will pin your nozzles from the tank and then determine the pressure drop inside the tank and compare them with the time that will then have the compressor to bring back the tank
10bar sure that working at 9bar with the 10bar line well.......it's not really nice.........

Bye-bye

 

[teseo]

Hello.
for my thesis I am working on a university project, precisely on a machine that I cannot give you too much info. But anyway I would need a hand on a particular part of the project, i.e. I need to choose nozzles that allow me to blow compressed air at least 9 bar for a minute. the problem is that I have a compressor of 24 liters with capacity of 220 l/m and pressure max 10 bar. the nozzles are mounted in series on a tube with an internal diameter of 6 mm, until now there have been provided of the nozzles simply converging with an output diameter 0,4 mm (those of the 3d printers to mean us). even to tell you that the jet does not last even a second and does not have all the force required. So I ask you have ideas and low budget solutions to suggest? (since a company has suggested a solution from 2000 euros)

What is the solution of the company? ? ?

 

[Pasquale Gallo]

What is the solution of the company? ? ?

the company offered me their air blade formed by 4 stainless steel flat nozzles with a blowing power of 30 n. but 2000 euros you will understand that for a prototype still in embryonic form it seems a little too much to me. So I thought I'd find something like that, but cheaper. we also had thought of a tank before the nozzles, but given the encumbrance there is almost impossible to insert it.

 

[teseo]

you can not print the air blade with hp technology for example, it will certainly last less but certainly cost a few hundred euros..... .
being prototype.... .

 

[Pasquale Gallo]

Unfortunately the company does not provide you with drawings. But then I doubt that the mold can give me exact answers. I would need nozzles that do the same as these air blades, or a similar solution.

 

[cacciatorino]

Unfortunately the company does not provide you with drawings. But then I doubt that the mold can give me exact answers. I would need nozzles that do the same as these air blades, or a similar solution.

there are several manufacturers of commercial nozzles that definitely do not cost the figures they asked you.

for example misumi:

https://it.misumi-ec.com/vona2/mech/m3600000000/m3606000000/m3606020000/

or windjet:

https://www.spritzenteile.de/nozzle...r-nozzle-727-stainless-steel.html?language=en

Anyway, I think you're gonna have to put a nice tank to get the air flow you need for a minute.

 

[teseo]

Unfortunately the company does not provide you with drawings. But then I doubt that the mold can give me exact answers. I would need nozzles that do the same as these air blades, or a similar solution.

Of course they don't give you the drawings, but did you see the air blades? Can you imagine? you can draw them....and then print.... hello

 

[meccanicamg]

Of course they don't give you the drawings, but did you see the air blades? Can you imagine? you can draw them....and then print.... hello

If you look well on the internet there are drawings of an air blade manufacturer...you have three pieces: base, cover and thicknesses to adjust the light of the air blade. It doesn't take a scientist just to make her do it in milled and rectified iron. ...without uncomfortable prototyping 3d.

 

[meccanicamg]

Hello.
for my thesis I am working on a university project, precisely on a machine that I cannot give you too much info. But anyway I would need a hand on a particular part of the project, i.e. I need to choose nozzles that allow me to blow compressed air at least 9 bar for a minute. the problem is that I have a compressor of 24 liters with capacity of 220 l/m and pressure max 10 bar. the nozzles are mounted in series on a tube with an internal diameter of 6 mm, until now there have been provided of the nozzles simply converging with an output diameter 0,4 mm (those of the 3d printers to mean us). even to tell you that the jet does not last even a second and does not have all the force required. So I ask you have ideas and low budget solutions to suggest? (since a company has suggested a solution from 2000 euros)

How can the nozzles be mounted in series? will be in parallel I believe....a tube with a nozzle each tot along the tube.
if so you must keep in mind the load loss of the pipe.
if you want something that can nebulize there are on the market of the m5/m6 grains with the calibrated hole from 0.1 to 0.5 and beyond....they also cost little because a 200pz bag seems to come on the 100/150€.
it is a few years that I don't buy them anymore.... but feel gt service They also have cents.
However you are using the compressor a little off plate and you will still have to change the two adjustment screws of the electric pressure because standard are not so generous as maximum pressure.

 

[Pasquale Gallo]

How can the nozzles be mounted in series? will be in parallel I believe....a tube with a nozzle each tot along the tube.
if so you must keep in mind the load loss of the pipe.
if you want something that can nebulize there are on the market of the m5/m6 grains with the calibrated hole from 0.1 to 0.5 and beyond....they also cost little because a 200pz bag seems to come on the 100/150€.
it is a few years that I don't buy them anymore.... but feel gt service They also have cents.
However you are using the compressor a little off plate and you will still have to change the two adjustment screws of the electric pressure because standard are not so generous as maximum pressure.

the nozzles are mounted on a tube, spaced from 6 mm each. We did all the calculations for load losses. Now in addition to evaluating having to buy a larger compressor (as capacity) we need the jet from these nozzles to be as fast as possible, but we can't make us understand by companies. do you think these grains can do for us?

 

[stevie]

the nozzles are mounted on a tube, spaced from 6 mm each. We did all the calculations for load losses. Now in addition to evaluating having to buy a larger compressor (as capacity) we need the jet from these nozzles to be as fast as possible, but we can't make us understand by companies. do you think these grains can do for us?

efflux speed depends on the ratio between internal and external pressure, I don't understand what you need a larger compressor.
If you want to increase the speed you have to increase the pressure of the tank and increase the capacity to achieve a longer duration.

 

[meccanicamg]

the nozzles are mounted on a tube, spaced from 6 mm each. We did all the calculations for load losses. Now in addition to evaluating having to buy a larger compressor (as capacity) we need the jet from these nozzles to be as fast as possible, but we can't make us understand by companies. do you think these grains can do for us?

certainly