Items to make Coal Vac a) steel drum b) 3-4 inch toilet flange c) pvc pipe sizes (1/2 inch) & (2 inch) & ( 1 1/2 inch) d) One 2 in 90 elbow & One 1/2 in 90 elbow & Two 1 1/2 90 elbow. Note more maybe needed for your set-up f) Shop vac minimum 4 hp g) Micro filter BAG for shop vac Drum lid Design lid to create a cyclone. This is done by placing a 1 1/2 (90 degree elbow) on the bottom side of lid. Image shows what you need to create.
Steel drum 15 gal drum with removable lid ( grease drums) Attach toilet flange on bottom of drum. Note location of drum will determine a how full hopper gets. Gravity will stop once coal in hopper meets coal in discharge chute.
Here is video of system. Note I've added 1/2 air vent pipe that isn't on this video clip. Since it was installed there is no more air bound causing lost vacuum. Intake pipe is now 4 ft deep to the floor of bin. If you to get a shock from static electric add a ground wire. Attach to the end of intake pipe to steel drum then to water pipe. Don't use fiber drum because it'll collapse.
I had an old shop vac that had a fitting on the outlet that would accept a hose. I haven't seen a modern unit with something like that. I wonder if one could make a housing for the vac and vent it to the outside? You'd never have to worry about getting coal dust in the house.
I have been thinking of an ash removal system to an outside drum similiar to what you guys are talking about. I have a dust collector blower that I retrieved from a dumpster at work and thought it would work well to attach a hose and blow the ash outside to a drum. this is on my to do list. or should i say to try list.
This place did not mention a lid for other than a 30 gallon or 5 gallon size. Any additional thoughts and photos would be helpful.
Oh, what is the flapper device on the bottom also? Is this a "gerry rigged" item or available on box stor shelves? If your creation- is it spring loaded?
Steve the image was just to show what your steel drum lid needs to look like.. On steel drum lid you need to make 2 holes one for intake pipe that will be straight . Air take pipe will have a 90 degree elbow inside. Go to your local garage to get your drum, they'll most likely just give it to you. free is for me https://www.motionindustries.com/motion ... 44_W_L.jpg
The flapper is Jerry Rigged. I used plastic lid from coffee container. You can use a ball valve but that's just wasting money. Attach lid with anything that will give it movement to swing open and closed. Once you turn shop vac on it'll create a vacuum and lid will close.