Thread: winter project
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Old 11-21-2013, 12:16 PM
joeE joeE is offline
LawnSite Member
Join Date: Jan 2006
Location: NW lower MI
Posts: 229
If you want full sweep agitation, you need to put a 4 bolt bearing W/seals. in the center of both ends. That will hold your cold rolled shaft ( 1&1/2" for 300 gal, 2" for 500 gal). To that shaft you will weld 2 or 4 paddles about 3 ft long. I use only 2 and get a little vortex going. Use a chunk of 3ft angle to ALMOST scrape the side of tank. Weld 2 chunks of angle or square stock between the shaft and paddle, keep them a little short so your paddle wont scrape the tank. If you want you can add a 3ft x 4in chunk of convayer belt to the paddles for wipers. The manway should be large enough to allow you to weld up your 3 pc paddle in advance and slip it inside the tank. Then you only have to make 2welds per paddle inside the tank. Place them 180deg offset. Dont forget to keep enough shaft sticking out for sprocket mounting. I like rubber wipers in my storage tanks but I see wear marks in the tank if I use them with sand. So I dont. If you use one inch of clearance, you will have one inch of sludge build up, sounds bad until you run out of sealer with only 30 ft to go and find that you can add some water to that sludge & mix it up & finish the job....... GOOD LUCK to ya.
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