Help to improve dust extraction system
I am a serious hobbyst with a one man shop. I live in Spain where woodworking is not very common.
My dust extraction system. shop made, consist of 12mm metalic ducts attached to cyclone, also shop made, that exhausts to two filter bags. The blower is a 2hp one, salvaged from a normal portable dust extractor (china made, I believe). Everything works very well and has improved my environement a lot.
But, and here is the problem, the airflow is 20 or 30% less than optimun for some of the gates/machines. I would like to increase that airflow. The option of changing the blower installing one with 3hp and better efficiecy, while feasible, is expensive and dificult to install due to the reduced space I have on top of the cyclone.
Is there another way?. Is it possible to install a 2nd blower after the cyclone? Maybe a some kind of a 2nd fan inserted into the duct before the cyclone.
I will appreciate any advise before conmitting myself to the “expensive and difficult”
Thanks
Replies
Justo,
You really meant 12cm duct, didn't you ?
I installed a secondary blower at the other end, before all the machines blowig air into the system.
Works great.
Calebaza
Yes, of course. It is 12 cm.
Do you mean before the intake to the cyclone? Is it also a centrifugal blower? What horse power?.
And, Do I ask too many questions?. Thank you very much for answering. You are up very early in the morning.
Justo
I have a main duct, about 20 cm in diameter, out of this duct I have the different branches going to the machines. At one end I have the dust collector with a blower creating a vacuum, at the other end there is a smaller blower sending air through the main duct.
So practically I have two squirrel cage blowers, one pushing (1.5 HP) and one pulling (2 HP).
No you don't ask too many questions. I am on the east coast so it's not that early.C.
Thank you very much Citrouille. I am going to try your solution because it is very easy for me to implement it.
Justo
I know this my sound stupid and obvious but when I take of the bag on my 1.5 collector and throw it in the washing machine it works fantastic. I have the single bag collector pulling dust from a 6" jointer, 10" table saw, 12" planer, and two table mounted routers. I get between 85 to 95% collection from each machine.
Good Luck!!
Muleboy.
I posted this already, wondering if I could wash the bags.
What I ended up doing was getting rid of the bags altogether and blowing the dust in a big box outside. (I am out in the boonies) with the system I described above, you won't believe how fast the chrome comes off the trailer's hitch!C.
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