Side draw hopper bin

ridgelane · Jan 11, 2012

I have approximately 100 feet of 6 foot diameter galvanized culvert. It is made up of bolt together sections.

I was thinking that I could make some small hopper bottomed bins from part of it. Does anyone know if there is a formula or some way other than trial and error, to make a side draw cone for the bottome end of the bin?

My thought was to have the sheets sit on a base and continue up for 20 feet to form the bin itself. The side draw cone would dump to the outside of the sidewall with a slide gate mounted just outside the side sheet. The dumping spout would be just high enough to slide a pail under.

I do have a formula for making the coned roof on the topside but nothing for a side draw.

IaGary · Jan 11, 2012

Will the cone on the bottom be centered with the door on the side of the cone. Or just a slope to one side like a gravity wagon that is round.

If you are gonna slope to one side and let the tube sit on the ground to be the base then you will need to cut out an oval to put inside the tube.

If you are gonna use part of the rest of the tube to cut your bottom out of it will be tough to seal it if the culvert is corrigated.

Gary

ridgelane · Jan 11, 2012

It will be like a gravity wagon, sloped to one side and open through the side wall for a dumping spout. I can use other metal to form the cone. Just need to know if there is an easy way to go about figuring out the shape of the cone from flat metal or is it best to piece together by trial and error til I have the complete bottom made.

IA Roy · Jan 11, 2012

It is a fairly easy drafting layout, but without my book, I can't help you. You should be able to google drawing cones, I believe a frustrum of a cone. Long time since drafting class. Full scale would take a little time, but not too complicated. In school it was part of the sheet metal development chapter.

paul · Jan 11, 2012

Could you get a 6 inch pipe or vent or chimney piece, and use construction papaer to form the type of cone you want, then scale up from that x 12?

It is often bad to draw down from the side of a tall bin rather than from the center, but you say only 6 feet across so if it's stiff strong pipe it should work out.

--->Paul

ridgelane · Jan 11, 2012

I checked it out, found several sites. Looks like alot of math to figure this out but it is full of ideas. Not exactly what I was hoping for but I'm sure with a creative mind I can make something work.

samn40 · Jan 12, 2012

If you have access to a sheet metal folder then life will be easier as you can fold small creases to help form the funnel. Roll up a piece of paper and cut the top to fit your angle then using that general shape make your cone.On purpose made grain bins over here these type of cones end up being pieced together anyway, as one sheet is never large enough to do the complete cone. Most manufacturers roll a hoop of 1 1/2'" angle iron to weld the cone to,then weld this to the bottom of the cylinder, it both provides rigidity and leaves a good attachment point for welding on legs.
Sam

Side draw hopper bin

ridgelane

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IaGary

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ridgelane

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IA Roy

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paul

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ridgelane

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samn40

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