Baghouse Versus Cyclone
Question (WOODWEB Member) :
I understand how they both work, one in detail the other in concept, but would really appreciate real life experience from those who use both. We are a custom cabinet shop that works mostly with plywood, hardwoods and very little MDF. The majority of fines are produced by the widebelt. We are looking at a CNC in the very near future. We don't do much heavy milling as we do not currently own a molder but that could change. What can anyone tell me? Stick with the cyclone? Or what about a baghouse? I don't want to go with both.
It sounds like youíre mainly panel processing. If you were heavy to chip (moulder/planer) I would stay with the cyclone/afterfilter. It sounds like a baghouse is the better solution. Because of the fines from the sander, I would recommend keeping the air-to-cloth ratio around 6-7:1. So if you need 8,000 cfm, make sure the bag house has at least 1,300 square feet of cloth. Used units are everywhere right now. It pays to buy more cloth than you need. You can always purchase a collector with say a 20 HP motor today that can be upgraded later if the demand is there. Again the trick is to make sure you have enough cloth in the beginning. When looking at a baghouse you have basically three choices - shaker, pulse and reverse air to get the cake off of the bags. For your application, all would work well.
From the original questioner:
I have been looking a bit more into baghouses of late after talking with a few others here who use them. The only calculations on the cfm have been done by the dealers that I have been talking to, with simple line drawings showing runs and port sizes. Some of the bigger machine requirements I am guessing at as my boss is planning on buying them down the road, but we still need to size for them. We would be doing a lot of panel processing as we are a custom cab shop, but there would be a bit of milling as well. No heavy molder yet. I need to dump the refuse into a three yard dumpster as I am tired of unclamping barrels and manually dumping them.
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