You are correct. A detail I forgot to mention... there will be a sanitary grade weld around the outlet hole on the inside of the mixing chamber as well to prevent that.
I have a mixing chamber that I'm designing, and there is a 1" butt weld pipe fitting that will be welded on the outlet hole with a 1/8" fillet weld around the fitting, as shown in the attached picture. The outlet hole is 0.87" in diameter and its center is situated 0.94" above the bottom edge...
Just room temp and only 20 psi, so I'm thinking non-metallic will suffice. Again, thank you guys! I'm new to this forum but very thankful that I found it
I am re-designing a prototype machine in our facility that uses DI water to clean itself (it's kind of like a CIP tank cleaning application), and the prototype we currently have has stainless steel NPT push to connect tube fittings for all of the nozzles that spray clean the tank. I was...
Valid point. I think 10,000 cycles would be ideal... once the blade wears enough to where it looks like it does in that 2000 cycle picture, the mix quality of the soil/water slurry starts to suffer and affects our downstream testing. Maybe 10k is unrealistic, but increasing paddle thickness is...
Excuse my super-non-artistic sketch, but this what I am thinking.https://files.engineering.com/getfile.aspx?folder=a48d5dc8-3eb2-4779-81a1-6a712e232a55&file=IMG_3608.jpg
Sure. Here are pictures of a new impeller, after 500 cycles, and then after 2000 cycles. Sometimes we will have small rocks in the samples we are blending (1/2 inch diameter, maybe?), and so I would be worried about shattering WC. I like the 17-4PH suggestion, and I think we could slot either...
I can't think of any other way to have replaceable paddles without bolting them on. We have also thought about the T-shaped concept you are describing. Bolts to be on the backside of the paddle so they don't take the brunt of the impact. Here's a quick sketch of what we were thinking. Just...
Thanks, Ed. I should have clarified this from the start because your responses may be different knowing this: the Rushton impeller we currently use cost $800, and so we intend to design one ourselves with replaceable paddles. The idea being that we could buy a sheet of whatever material we end...
Thanks! What about A2 tool steel? That's technically harder than Hardox 550, right? WC is even harder, but would the brittleness of that be a concern with this abrasive application?
I'm looking for some help selecting a material for what's called a Rushton Turbine impeller (if you do a quick google search, you'll see it). The application is to mount the impeller to a motor shaft and use it to blend soil and water to make a slurry to use for soil analysis. We've currently...
