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Cyclone Exhaust Questions?10/1
We have a moulding shop, the usual: 6 head moulder, gang rip, 2 sided planer, and more.
We've recently purchased a new cyclone. Our blower in/out and main trunk line are 20". The new cyclone has a 90 deg exhaust hood on the top. It all works well with the chips and such droping down into a dust building.
Problem is: We are still getting a fair amount of fine dust in the air. I have no need for return air into the shop as it is not heated and open on one end most of the time. How can I get rid of this fine dust out the top of the cyclone? Is there a way to do this with out a full blown bag house??
Cyclones need the back pressure generated by blowing the exhaust air into some type of filters to be efficient. If the filters are sized correctly, almost all the particulate will drop out of the cyclone with very little going into the filters.
I have a 10 hp cyclone set up with a blower under the rotary airlock that blows the chips from my molder into a dumpster.
The filters are two 10 ft tall bags on top of 55 gallon drums. I can fill the dumpster 10 times and only have a foot of dust in the bottom of the drums.
Air velocity might be too high. Try shutting a couple gates as an experiment.
Dust collection systems should be engineered to get the most bang for buck.
Lots of fan and lots of pipe do not make a system.
I know if you buy from Oneida Air, they will draw and design a system for free. Then you plug your equipment into it and see what you have.
You can cut down on the fine dust with a water spray in the pipe ahead of the blower. We used an ag nozzle, 1/4" pipe and a solenoid valve controlled by the contactor on the feed motor producing the dust. It doesn't take much water but you need the dust to carry away the water or you have a mess.