As we know the easiest damaged part of shale shaker is screen. So drilling works have a problem that how to correctly replace shaker screen. The experiment show that according reasonable replacement steps can make screen is more efficiency and with longer service life.
Tearing down the old screen cloth
Stop to transport mud to inlet groove, desander and desilter.
Clean up the residue on screen cloth.
Cut off the electric source of vibration motor and locked.
Using combination tool, clockwise direction turn the tensing screw.
a turning the gradient lock 2 turn 90°according anti-clockwise direction.
b turning the gradient lock 1 turn 180°according anti-clockwise direction.
c turning the gradient lock 1 turn 90°according anti-clockwise direction.
Using one side of combination tool hooks upright row and dismantle screen cloth.
The installation of new screen cloth
The external rim of shale shaker screen cloth put on the fixation hook of inner screen reel.
The screen cloth is shifted down, using fixed hook grapple the external rim of screen cloth.
Continue to lower screen cloth to contact the flank supporting of screen bed and fixed hook completely grapple the crook of screen cloth.
One set of tensing assembly tensioning screw spin clockwise 90°make screen cloth tensioning and keep in tensioning location. Now don’t put a nut on the full 180°.
The second tensioning screw clockwise rotation 180°.
Returning to the first tensioning screw clockwise rotation 90°get to completely clamp location.
Ensure screen cloth have already completely contact flank supporting, cross supporting. If the screen cloth is flabby or has corrugate ruga, removing tension and retightening tension screw to make screen cloth completely contact screen bed.
Shaker screens are expensive expendable. No matter for which brand shale shakers will request high quality shaker screen for good performance or efficiency during the operation. Especially to famous brand shale shakers. So we must master how to replace screen.