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Baghouse backfeed woes9/9
Our bag house is fed from two different lines. The secondary line has its own booster fan, which we only use when that line is running. When that secondary line is not running, there is a door inside the bag house that drops closed to prevent backfeed of dust into the second line.
Our problem is that there is a ledge a couple inches under the damper door where dust has a tendancy to build up on - to the point that it stops the door from closing completely when we decide not to run the secondary line, allowing fine dust to backfeed into the second department.
We tried mounting a pipe with holes drilled down the length to set on the ledge. It works very well to blow off the ledge, but if you turn off the air supply to the pipe, the pipe fills up and plugs with dust very quickly (less than a week), leaving us to constantly go up and clean that pipe out - which is not a very desirable task. I don't want to leave the pipe on all the time because it uses too much air from our compressor, and I don't want to be sending my guys up the ladder during the upcoming winter.
Is anyone aware of a product or method to ensure the damper door closes properly every time, or even better, eliminate the dust buildup on the ledge in the first place?
How about some high speed electric fans instead of compressed air?
Cover the ledge with either a half round of pvc pipe, or an angled surface so the dust slides off instead of laying on top of it. Or, bend down the ledge so the dust slides off. A coat of EZ Slide Graphite Coating will make it more slippery as well. Sold at farm supply stores, or Amazon.