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VacuumLand – Vintage & Modern Vacuum Enthusiasts

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In dustrial cyclones can be either positive-fan blows into the cyclone system-the old high school woodshop-which meant EVERYTHING went thru the suction fan BEFORE the cyclone.We loved to toss woodblocks into the unused suction openings on the system-you blocked them when the other machines in use-anyway loved the CLANG as the wood peices went thru the fan turned by a 5Hp 3Ph motor.You then heard the PEICES rattling around and around in the cyclone before dropping into the waste bin.Now for the NEW high school woodshop-the cyclone in that one could be NEGATIVE-the cyclone was BEFORE the suction fan.the discharge of the fan blew into a baghouse type filter.another 5Hp fan.so a woodblock would rattle down that cyclone INTACT and fall into the bin.In both systems the fine dust-like from sanders,bandsaws and scrollsaws-would go into the baghouse filter on both.Never saw the fan in the direct air system-would have to imagine it would be pretty massive to withstand the inpact of the wood blocks.and would think the fan would get loaded from fine dust.I was one of the folks that emptied and tended these units.Was interesting and dusty duty-emptied after each shop class-for fire safety.and no metal or rags allowed in those systems-those could react with the sawdust and cause a fire.Torit,I vaguely beleive was the maker of one of them.New unit)old one-unknown.and for the Dyson vacuums-many users just don't understand it is a dump bin vacuum-like a dump bag vacuum,it has to be emptied after each use.That prolongs filter and dump bag life.Many users treat the Dyson and other dump bin,bag vacuums like a paper bag vacuum.they dump it when it is packed.I have looked into the cyclones of my Dyson vacs-yes they get coated with fine dust.Probably static attraction of the plastic-don't have this with grounded metal cyclones.


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