Fume hood and a scrubber

I sent 4metals a private message but I dont know how he is going to respond but in the mean time I will post this and see if I can get help.
I am thinking of having the fume hood made in plastic to this size
4 feet length
4 feet height
24 inches depth
--------
I am planning on making 2 holes and than placing 2 lamps
from the outside of the fume hooed
-------------
I am thinking of buying a blower that is above 2,000cfm
Also attach a device for changing the speed of the motor
-------------
I dont know if I will need a damper
http://img339.imageshack.us/i/41958822.jpg/

Thanks

Already I see something wrong here
The 6 inch pipe that's going inside the scrubber will be too heavy.
I think I will keep the outside pipes at 6 inches and the pipe that goes inside I will make it 3 inches.
I need help from someone who has done this

Cant I place something in there that is lighter and flexible
I will ask the place where I will order that fume hood

Build you a support above the scrubber to hold the 6" pipe and don't reduce it. Also it wouldn't be a good idea to build your hood out of plastic.

Hi Barren
When I say plastic I meant polyethylene

Plastic, polyethelen same difference in a situation of the fume hood. You should conside building it out of something that is non flamable or corossive in nature.

Hi Barren
The person making the fume hood said pvc is better
Do you have any suggestions

That 6 inch pipe inside the pipe could be flexible and I guess it should not be with holes all over it just in the bottom and I may have to put a net or something like that so something from the inside does not get in

affinazione.pdf
http://goldrefiningforum.com/phpBB3/viewtopic.php?f=40&t=9197
What kind of material is this company using

Metal with an epoxy or ceramic coating would work. Just make sure it is fully coated to protect from fumes. I wouldn't worry about a net on the end of your pipe shouldn't be anything getting up inside of it.

Hi Barren
To make the hood in metal is good but to make the holes will be very hard
unless you find a place that will make the holes or make them with the acetylene torch

I sent 4metals a private message but I dont know how he is going to respond

Click to expand...

I just looked, you didn't send it to me.

I would run the 6" pipe down outside the scrubber and weld it to the side where it goes in. what diameter is the scrubber? And the height?

Refiner232121 said:

Hi Barren
To make the hood in metal is good but to make the holes will be very hard
unless you find a place that will make the holes or make them with the acetylene torch

Click to expand...

You can use a hole saw that you should be able to get at Home Depot, plumbing supply house, electrical supply house or HVAC supply house.

You could run the pipe right to the bottom of the tank to take the weight. And cut a 6" hole at the proper height above the solution, or many 2" holes if that would be easier.

The area of eight 2" holes would be roughly equal to 6" pipe.

It will be a while before I have the funds for a hood but I was considering this material, expanded PVC, reduced weight and cost expanded pvc foam core. Several companies produce it and some is UV stable but this line isn't.

http://www.usplastic.com/catalog/item.aspx?itemid=44936&catid=733&clickid=searchresults

1) I have to make sure that i buy a sealed container for the lye



2) Barren I like the idea of metal but do you think the Italian machines have metal fume hoods
I mean if I can use pvc than that would be easier to work with
I guess I can make it myself but it is a lot of work
I dont want to make this from wood
Anyway the person making these pvc fume hoods didnt return my call today so I will
talk to him and see what he says on Monday
I still have time to decide
If I can do it with pvc that would be better what do the experts think

3) qst42know I made a picture here
http://img34.imageshack.us/i/12167309.jpg/


4) In the picture I have the pipe on the outside
welding is good or screw it on


5)4metals I was saying that if you can design a system than I can pay for your services
but this is a small project and it might not interest you
My friend wants the refine 2 kilos of gold
so i said 12 inches in diameter for the scrubber


6) This is a frame for the 2 spot lights
http://img863.imageshack.us/i/1copyvg.jpg/
http://www.google.com/imgres?imgurl=http://www.tlc-direct.co.uk/Images/Products/size_3/FL7001BS.JPG&imgrefurl=http://www.tlc-direct.co.uk/Manufacturers/Firstlight/Single_Spots_GU10/index.html&usg=__X8Ue8OvdzAtpZcH_YA68RlQxlPw=&h=537&w=600&sz=24&hl=en&start=15&zoom=1&tbnid=OM8B6SdGlbCK0M:&tbnh=127&tbnw=165&ei=J9OoTbvNIKG00QHsjpn5CA&prev=/search%3Fq%3Dspot%2Blights%26hl%3Den%26sa%3DG%26biw%3D1024%26bih%3D578%26gbv%3D2%26tbm%3Disch0%2C342&itbs=1&iact=hc&vpx=464&vpy=231&dur=358&hovh=212&hovw=237&tx=167&ty=91&oei=H9OoTfHmCIbn0gHx26D5CA&page=2&ndsp=16&ved=1t:429,r:2,s:15&biw=1024&bih=578

If you are not going to be using a lot of heat in the hood you could probably get by with a PVC hood. But if you are going to be incinerating and melting in the hood I would not go with PVC. Murphy's law will come into effect.

Hi Barren
He is not going to incinerate or burn ,just boil acids on the hotplate
So I think pvc or polyethylene will be OK

The supplier said he has nuts and bolts in plastic but I am thinking how I will have the Plexiglas door on the hood
I don't want plastic hinges
I want sliding type how can I mount the rails on the hood
I will ask the supplier for ideas.

Also how am I going to mount the 2 lamps
The design I have is with metal but I don't like it that much

If that is all you are going to use in the hood you should be ok.

You can try a 2 part epoxy putty and press the rails on with C clamps to hold pressure to the item. Do a test with the the epoxt and see if it will work before you commit to it.

You could have a piecr of plexiglass between the inside of the hood and your light's. I would use a flouresent light to keep the heat down.

Hi Barren
I have used that type of glue many times before but not for something like this however I have a feeling it will not do the job
I am going to ask the people casting that thing for their advice
If they can cast the tracks than that would be good.

I forgot to mention that I will have another blower in that system taking the air out direct without a scrubber

Also I will have a sealed container for the lye and not like the one golldie made and that should keep the smell out
However would I need a 3rd blower in that room because he will have buckets of acids and waste water with lye and it can be very strong that smell.
Does anyone have any suggestions
Thanks

Here are some options for a well sealed fluid tank.

http://www.absorbentsonline.com/Poly-Drums/lab-pack-drums.htm

You can see better images on the Eagle site.

http://www.eagle-mfg.com/drums.html

qst42know said:

Here are some options for a well sealed fluid tank.

http://www.absorbentsonline.com/Poly-Drums/lab-pack-drums.htm

Click to expand...

Screw on top's. I like that idea.