screen printing > Tips and Tricks to Share (Please don't ask questions here)
Mooseman’s Simple Solids Trap
CBCB:
--- Quote from: ericheartsu on December 22, 2019, 07:44:27 PM ---
--- Quote from: CBCB on December 22, 2019, 06:39:27 PM ---
--- Quote from: ericheartsu on December 22, 2019, 06:28:36 PM ---using settling tanks is helpful, but it doesn't always filter out solids. Especially ink solids, which can sometimes have a hard time being broken down.
I'd HIGHLY suggest getting John Sheridan to build you a tank. They aren't that expensive, and they last alot longer, and filter out more!
--- End quote ---
I’ve seen those tanks and they look good but I think you’ve missed the point. Yes there are better solutions available. I wouldn’t say they’re cheap though or as simple to make as this.
There’s no claim here that it filters out all the solids, just that it’s better than nothing. Which is what most people have... nothing.
Maybe because they think they need to spend hundreds when they can start preventing junk going down the drain TODAY for under $10.
Considering I passed our municipal test with flying colours with just the bucket I think that’s pretty notable. The Ryonet filter goes down to 20 microns but you can put whatever filter ya want in it. So if we wanna go lower we could.
Just saying I probably would not recommend John’s tank to someone who already owns the Ryonet one. Would definitely recommend a settling tank to anyone who owns the Ryonet one though because she’s junk without it.
--- End quote ---
You're right, this is better than having nothing. But honestly, i Disagree. We had 3 Ryonet filters that each had 1-2 55 gallon settling tanks, and we still got TONS of solids through. Maybe it's because we are using HSA, and if you're not careful you can get dried ink chunks. But a multi step filtration system is what is needed, regardless of your ink choice.
As an industry, we need to do better, and not just "hope Osha and the government lets us pass".
--- End quote ---
What is “tons” and what microns filters were you running?
The only difference between systems in my opinion is how easy they are to clean, how much they cost, and what micron they go down to. I don’t understand how one could let more through than another? It’s a filter. So doesn’t it get clogged rather than start passing solids through the system?
That’s my experience. It doesn’t start letting junk through. The micron filters just get clogged. And then the sump pump backs up which is why we have the leak detector and alert light rigged up. Because that crap makes a mess.
If I could start over I’d build my own similar to John’s, but it’d probably just be three 5gal buckets in a row to keep it super simple.
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mooseman:
Here is a picture of a filtering system CBCB spoke about.
The system is as he says very simple. And yes it does not clean the water but it does get everything that is heavier than the water can float.
The primary key to the operation is to deliver the inflow at the near bottom of the bucket and have as great a distance as possible to the upper skim off connection. The bucket we used was a 32 gallon seed bucket and it is very effective at removing (settling out) the non floatable material. Lastly we are a small one man shop so we are not dumping 100's of gallons a day into this system.
One interesting thing will happen when you clean out this system.
You will see over time the sediment becomes stratified , very stratified obviously with the heaviest solids at the bottom and transitioning to the lighter stuff to the top.
mooseman
kingscreen:
This is a good cheap solution but why not just swap the pvc with the new bucket? Pouring the full bucket into another bucket seems like a messy step.
CBCB:
--- Quote from: kingscreen on December 23, 2019, 03:59:40 PM ---This is a good cheap solution but why not just swap the pvc with the new bucket? Pouring the full bucket into another bucket seems like a messy step.
--- End quote ---
Agreed, worst step of the whole process. That’s why I hesitate with larger traps. How the heck do you clean them out without emptying it and scooping the bottom?
For example the bottom of the Ryonet tank. No fuckin’ way to clean that unless you empty the whole thing. And how do you do that? The box is super heavy even before it’s full of water!
The PVC fitting is pretty tight on the bucket, plus some sealant on there. So it’s not exactly ‘quick release’. That’s why I do the pour.
I have tried to siphon off the top water but any agitation messes it all up. So far this is the simplest and easiest. Just pour it into the next bucket and let it sit.
I’ve considered putting the outlet lower though, so that there is less water in the trap to make it easier. Definitely paranoid about spilling. We’re on the 4th floor!!
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CBCB:
Also, thank you Mr. Moose!!! Those are the exact diagrams I referenced to build this in like 2014. Really appreciate you and these boards! Thank you!!!!!
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