Screens Etc.
First things first,
Totally remove the word vibrating from your
vocabulary as it relates to screening please, thank you.
Screens shake either in a forward ellipse,
reverse ellipse or true horizontal stroke with a cam and arm for fine
dust removal of waste halite dust in one example.
Second a screen motor or motors will always find the stop point(center)
as it is affected by the weight or weights and the weight of material left on the screen
if any in the event of a power failure, or screen motor failure.
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Motors On Vibrating Screen
The motors on the vibrating screen you have shown will synchronize inertialy when started. The force vectors will cancel each other and add at the angle of vibration or c.g. of the unit. ■
Self-Synchronization
This phenomena is called self-synchronization. I have seen some non-linear vibration expressions to describe what happened.
The result of self-synchronization will be a force perpendicular to line between center of motors. ■
Working of Linear Vibrating Separator
Hi,
I am new to vibration screening. MY question is simple, though i have not yet figured it out. It is:
"How two Contra-Vibrating motors mounted on vibrating structure produce "linear motion perpendicular to the mounting plate, rather than perpendicular to horizontal"?
1.My doubt is unbalanced weight of both motors will always start from vertically downward positon due to gravity, so both weights getting sync at only vertically up and down position in the cycle, producing vertical motion with ground irrespective of mouting angle of motors. So generalising this, assuming both weights start from a particular angle,linear motion will be in that angle.
2. Is there any way to start from a particular angle, or actually it doesn't matter from where i start, motion will be the same?
Above queation is illustrated using a sketch attached below, "actual" is what happens and "thought" is what i am guessing.
Please help to clear my doubt. Thanks.
Attachments
actual (PNG)
thought (PNG)
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