dust extraction bin

[jfc]

I was trhinking of extending the triton bin but i notice when i open the second intake port i lose suction in the bin .

[lemonjeff]

I've got a Triton dust bucket and when I get time I want to try this conversion.
www.woodworkforums.ubeaut.com.au/showthread.php?t=40920&highlight=triton+collector

Jeff

[Keith]

With cyclones any air leakage from the bottom ruins the cyclone effect. The other problem with this type of bin system is that the dust in the drum is constantly being agitated.

Oneda do a nifty little cyclone sparator for about £200. Or you could always build your own from fibreglass, like what I did which cost about £50.

[engineerone]

jeff, i could not access the australian site, how do we bypass the sign in to just look?

keith whilst i understand your comments about air tightness, i think there are a couple of answers, but have not finished the experiments that barry and i started.

in principal it is to do with the distance between the exhaust pipe and the mouth of the cyclone, and also, i do wonder whether there is a need for a sort of baffle in the collector bin too/

jason has started another thread suggesting we put all our ideas together, and maybe we need a new part of the forum


paul

[jfc]

Ive removed that one , i thought we could just put it all on this one seeing as its going that way anyway .

[jfc]

On the Triton extention they extended the centre suction hose into the bucket and got rid of the filter . They got rid of the scoops and put a plastic elbow in its place and put a funnel in to take the waste out of the bottom of the triton and into another collection tub .

I wonder if the extra collection tub could be a normal size bin with a bin bag in it ? Or would the bin bag get sucked up ?

[engineerone]

i think it would need the bin bag to be held lightly at the bottom to ensure that it does not get sucked when empty, however,
obviously when the dust/ chippings build up, the weight will keep it down.

i have just scoped out the barry top of the triton bucket and it is like jason said, but barry left the gate on one of the two side holes, whilst putting what appears to be a piece of plastic angle.

of course the problem with the triton is the fact that it only takes an 1 1/2 pipe. therefore it can realistically only be used for the smaller stuff, like corder sanders etc., although i aim to try it out with my mafell 160 p/t soon and see what that does, although i also need to redesign the collectors on the machine.

otherwise the second cyclone also fits on a standard "bin"
and is fitted with a clamp similar to that on many other extractors. in fact i think that these clamps are a major problem with many collection systems.

barry modified the triton clear bucket, by putting a conical section in the bottom to direct the dust into another one. however it was not as air tight as it could have been, so there is dust between the walls.

paul

[Head clansman]

Hi all

jeff excellent video on the mini cyclon thanks for letting us all know about it , that the sort of idea i have in mind now i've seen that it works i dont see why the box cant be square useing the funnel in the upper triton bucket . jfc i like the idea about the bin liner I two dont know if it would get sucked upwards might be ok i suppose when it got some weight into it ? it obviousley would be better if it has a liner in the lower bin so you just open the box pull the liner tight closed at the neck and lift out ready for disposal thus avoiding all that dust if you still had to empty into somthing else to dispose of. any one tried this before ? hc

[Head clansman]

hi

bin solution simple when you place a bin bag in drop a piece of off cut in the bottom of the bag whilst it empty just to weight it down . hc

[jfc]

Well i got bored today ;D









I glued a gasket around the lid of the bin to keep it air tight . The plastic bag does get sucked into the workings . I kept the filter on and the plastic scoops and it works a treat . I think i need to get a bigger funnel for the bottom of the triton bin as i want to use it for larger shavings aswell as fine stuff .

[andy]

Nov 16, 2008 16:05:12 GMT jfc said:

I glued a gasket around the lid of the bin to keep it air tight

Wonder where you got that idea from

[jfc]

Can anyone guess that was a tip from Andy ;D

The Triton was higher up than that and as it is tapered i was hoping it would seal itself but it just got sucked in So i need to make a board to go under the lid to hold it in place . I removed the filter and extended the hose into the triton but the extractor took all of the waste so i dont think i have sussed that bit yet .... Or understand it more to the point .

[Head clansman]

hi jfc

you mention you extended the( hose) into the bin further so when it pressurized it would be flexible and proberly bending into the cyclone path, try using a rigid a 1*1/2 plastic sink water pipe so its sucks only from the centre of the bin , if you try it at maybe variouse lenghts it might not suck up the lower bin liner , did you see the link on the triton web site ? just a thought. hc

[jfc]

Yes i watched the triton you tube clip and used a bit of waste pipe . Like you say it was probably too long .

[Head clansman]

hi jfc

did you try it without the centre pipe in side the bin? i suppose it might depend on how powerfull the extraction motor could be, it may make a difference., after all it worked before we tried this hc

[jfc]

Only with the filter on .
I have found a tupperware tub that fits the triton perfectly for £1 so i may try a few of those with the bottom cut out rather than the funnel . If i can get it so there is less suction in the bin but more of an open bottom to the triton bin then i will have what i want . Not sure if its even possible but for £1 a go its worth testing eh .

[Head clansman]

hi jfc

i'll be laid up as of tomorrow , your my guinea pig here, it sure is worth a try. hc

[jfc]

What i have done already will be fine for mdf dust . I am trying to pick up spindle moulder shavings / chippings .

[engineerone]

i think a lot depends on the cyclone effect you actually get, as to where the bottom of the outlet tube goes.

not long before he popped his clogs barry and i were trying to sort of establish a properly designated length for the outlet.

for instance if you are only using mdf or only producing dust,
then the tube can i think go further down the cyclone, indeed
almost through the bottom.

of course if you are only making a 6inch diameter cyclone, it is difficult to get a narrow enough tube into the lower part, so it is a compromise.

the triton top i have fits onto a triton clear bucket, rather like the one jason has just bought, however, barry had put a sloping floor in, and since that directs the dust down, i think the outlet pipe could be made a lot lower. but so far have not tested it.

later this week i will i hope have completed a couple of things which allow me to test more, and be more effective,not least on the scms.

paul

[jfc]

What i got from the small cyclone Barry brought to my workshop was he was trying to dump the dust with the help of lack of air flow . If the dust is spinning and aimed towards the lower part that is open and the airflow on the lower part is less the dust will drop out of the cyclone and into the bin .Having the suction pipe lower into the cyclone as i found today makes the suction source take away the dust/shavings and not let them all drop into the bin .

[engineerone]

you may well be right, but with the cyclone i have i cannot yet see how and where the dead air zone is.

but maybe some work will show that.
paul

[jfc]

The dead air zone has to be at the bottom of the triton bin for the dust to fall . I cant see how having the suction there will help the dust fall , i know it does i just dont understand why .

[engineerone]

actually i would have thought in a cyclone, the dead air zone has to be about 3 inches below the lower end of the cyclone, to kind of stop the air flow and let the heavy material drop out.

thing is i too have not quite figured out how you organise the clean air flow upward so it is kind of soft and does not stir up the dust that you have just carefully laid on the floor of the collector, yet allowing the whole thing to actually draw air from the appliance.

paul

[jfc]

The problem is if you have the suction to low the dust doesnt drop into the bin . Well thats what i found anyway . Then again if you have it to high as in the filter everything wants to stay at the top so blocks the whole set up .

[Keith]

The dead point will be near the top of the cyclone, not the bottom. Try it 3 inches from the top. That is if I've understood what you are doing!