Building scrubber

[Emryst]

This will work only if the fan is able to create strong enough suction.
The best solution for you I think, will be a vacuum system by water-jet venturi and a slight suction in the hood.
That can be scrubbed by misting in a 200L plastic barrel or similar.

Would this 2 to 4" pvc be enough of a cone or is it too short. Maybe 2 of these with a short 2" pipe between with longer 4" pipes

 

[Emryst]

This will work only if the fan is able to create strong enough suction.
The best solution for you I think, will be a vacuum system by water-jet venturi and a slight suction in the hood.
That can be scrubbed by misting in a 200L plastic barrel or similar.

This is a quick sketch using pvc and the tube tote I was planning with the fan exhaust. Injection nozzle to increase the pressure spray from 400gph sump.

OK tell me if I have a clear idea of function or not and the pitfalls to this idea of a build.

If tou would be so kind I mean. Please.

 

[Yggdrasil]

I have been researching principles of a venturi system. I consider myself a fair mygyver type. But I am at a lost on how I can make the venturi shell as well as what the flow of solution injection should be and if this 400gph pump I got be enough? Any way you could point me in the right direction. Prior post of another members ideas I can play off of or something like that.
I want to see if I can still use most of the things I have gotten for the scrubber I was intent on building. But if I'm gonna make a switch better do it before I even start any construction.

Maybe I was a bit unclear.
The e-ductor system to create vacuum by water flow is also a Venturi system.

 

[Yggdrasil]

This is a quick sketch using pvc and the tube tote I was planning with the fan exhaust. Injection nozzle to increase the pressure spray from 400gph sump.

OK tell me if I have a clear idea of function or not and the pitfalls to this idea of a build.

If tou would be so kind I mean. Please.

This drawing do not make sense to me.

 

[4metals]

Maybe I was a bit unclear.
The e-ductor system to create vacuum by water flow is also a Venturi system.

A Venturi and an eductor are both devices that utilize fluid dynamics to create a specific effect, but they operate on slightly different principles and are used for different applications.

1. Venturi: The Venturi effect refers to the reduction in fluid pressure that occurs when a fluid flows through a constricted section of pipe. A Venturi tube is a specific device that demonstrates this principle—it has a wide entrance, a narrow throat, and then a wider exit. As fluid speeds up through the narrow part, its pressure drops, allowing for applications like fluid mixing, measuring flow rates, or even drawing in additional fluids.
2. Eductor: An eductor, also known as a jet pump or jet mixer, is a device that uses the principle of the Venturi effect to entrain or mix a secondary fluid (typically a liquid or vapor) into a primary fluid stream. It has a similar structure to a Venturi but typically includes a nozzle that ejects the primary fluid, which creates a vacuum that draws in the secondary fluid. Eductors are commonly used for mixing chemicals, vacuum applications, and transporting solids or liquids.

In summary, while both devices utilize the principles of fluid dynamics and pressure changes, a Venturi typically measures or manages flow and pressure, while an eductor is designed for mixing and moving fluids.

 

[Yggdrasil]

A Venturi and an eductor are both devices that utilize fluid dynamics to create a specific effect, but they operate on slightly different principles and are used for different applications.

1. Venturi: The Venturi effect refers to the reduction in fluid pressure that occurs when a fluid flows through a constricted section of pipe. A Venturi tube is a specific device that demonstrates this principle—it has a wide entrance, a narrow throat, and then a wider exit. As fluid speeds up through the narrow part, its pressure drops, allowing for applications like fluid mixing, measuring flow rates, or even drawing in additional fluids.
2. Eductor: An eductor, also known as a jet pump or jet mixer, is a device that uses the principle of the Venturi effect to entrain or mix a secondary fluid (typically a liquid or vapor) into a primary fluid stream. It has a similar structure to a Venturi but typically includes a nozzle that ejects the primary fluid, which creates a vacuum that draws in the secondary fluid. Eductors are commonly used for mixing chemicals, vacuum applications, and transporting solids or liquids.

In summary, while both devices utilize the principles of fluid dynamics and pressure changes, a Venturi typically measures or manages flow and pressure, while an eductor is designed for mixing and moving fluids.

There is no need for an e-ductor to have different liquid/gases to call it an e-ductor, you can suck water with an e-ductor or use gas(air) to create the vacuum.
The work hoarse is the pressure drop after the restriction, which is created by the venturi effect.
Its use is mostly just restricted by the imagination

 

[4metals]

Its use is mostly just restricted by the imagination

True. I prefer venturi for drawing air in general hood exhaust and water powered eductors for pulling strong vacuum. I have built systems to transfer acids, wastes, and even liquid caustiic which is quite dense using a recirculating eductor. With an air venturi it is hard to imagine collapsing a container but with a strong pump and a properly sized eductor you absolutely can collapse a sealed container.

This can really happen with a strong vacuum which is generated by a recirculating eductor.


I imagine this is the fate that the 5 souls experienced on the Titan submersible that imploded when diving on the Titanic.

 

[Emryst]

There is no need for an e-ductor to have different liquid/gases to call it an e-ductor, you can suck water with an e-ductor or use gas(air) to create the vacuum.
The work hoarse is the pressure drop after the restriction, which is created by the venturi effect.
Its use is mostly just restricted by the imagination

I get that. The last drawing I quickly sketched up is the concept I'm thinking using basic 4" pvc with the sump injected at top to create the vacuum. Instead of the packed system. Basically this system I attached here. I'm just trying to find diy mygyverized parts to get the jet in the system. I'm thinking lawn sprinkler head. Not sure if it will be enough. Specs say the head does 1.25-4.71 GPM with an operating pressure range of 20-50 psi. The sump specs are 400gph. Just not sure if the pump is to strong for the head or not strong enough to get the jet to push enough velocity to create suction. I'm I saying this right lol I'm not a physicist.

 

[Yggdrasil]

I get that. The last drawing I quickly sketched up is the concept I'm thinking using basic 4" pvc with the sump injected at top to create the vacuum. Instead of the packed system. Basically this system I attached here. I'm just trying to find diy mygyverized parts to get the jet in the system. I'm thinking lawn sprinkler head. Not sure if it will be enough. Specs say the head does 1.25-4.71 GPM with an operating pressure range of 20-50 psi. The sump specs are 400gph. Just not sure if the pump is to strong for the head or not strong enough to get the jet to push enough velocity to create suction. I'm I saying this right lol I'm not a physicist.

You are overthinking this.
Just have a system that gives some mild suction to evacuate the excess vapors.
The main system would be an e-ductor with flowing water from the faucet or a pump.
This will suck directly from the beaker through a couple of bottles and into the water.

More or less Like this for the vacuum:



and like this for the residual gasses:

 

[Emryst]

You are overthinking this.
Just have a system that gives some mild suction to evacuate the excess vapors.
The main system would be an e-ductor with flowing water from the faucet or a pump.
This will suck directly from the beaker through a couple of bottles and into the water.

More or less Like this for the vacuum:

View attachment 65043

and like this for the residual gasses:

View attachment 65044

Oh OK I it it I think is the box deal the fume hood? If so what would be the cfm of the fan I would need? If the beakers are going to the vac what's the box represent in ur illustration? I thought it was the hood.

 

[Emryst]

If I'm understanding the hood with the fan and suction pipe sit between the refining beaker and the naoh beaker right?

You are overthinking this.
Just have a system that gives some mild suction to evacuate the excess vapors.
The main system would be an e-ductor with flowing water from the faucet or a pump.
This will suck directly from the beaker through a couple of bottles and into the water.

More or less Like this for the vacuum:

View attachment 65043

and like this for the residual gasses:

View attachment 65044

 

[Yggdrasil]

If I'm understanding the hood with the fan and suction pipe sit between the refining beaker and the naoh beaker right?

I'm obviously struggling to make my point go through, so I made a more complete sketch