Powder weighing mechanism

Posted in: , on 15. Sep. 2004 - 11:29

I am planning to design a powder weighing mechanism in which the powder is fed to a cylindrical container with a ring compression load cell underneath it. The load cell capacity is 20kg. The target weights for the powder is from 1-5 kg. The plastic (for packaging of the powder) is already inside the container. I am constrained by the size of the plastic so that the computed diameter and height of the cylindrical container is 7 x 12 (inches) respectively. Is this a stable mechanism or should I consider a different mechanism? Suggestions are welcome.

Re: Powder Weighing Mechanism

Posted on 9. Dec. 2004 - 04:02

Angelita,

You may have a problem finding a ring torsion loadcell in a 20 kg capacity. You might want to consider using a single point bending beam loadcell, mounted to a plate with the load resting on another plate attached to the live end on the cell. This is the common method of making small platform scales.

The smallest compression disk loadcell I can find in my suppliers catalog is 2200 kg, and about 3 times the cost of a single point loadcell.

Hope this helps,

regards, Todd Dietrich todd@kvsco.com Kaskaskia Valley Scale Co. http://www.kvsco.com