If you have to stop production, take flanges loose, and replace screens,
please look at the sketch of our Big Screen
This is a screen, which can be replaced without
stopping production just pressing a button.
The actuator moves the screens, bringing the one, which is to be
exchanged, outside the screen body and at the same time the clean one
into the flow area. While the one screen is outside the body it can be
cleaned and prepared for the next exchange.
An example for the application of such a screen is the vent on the
steaming vessel. In this case the Big ScreenÔ
features for example a screen pattern of 1/4” diameter holes on a
1/2” square centerlines, the cut rings, which shear the protruding
fibers from the screen surface, glass filled PTFE screen guides,
expanded PTFE rope packing, a long 14” face to face dimension with an
optional “man-hole” for removing any fiber accumulation in front of
the screen, if after several screen exchanges fibers should have
accumulated in the screen body, and an actuator with 8000 lbs. of force
for a 12” screen.
Another option is a feature of the Big Screen, which allows any
accumulation of fines (smaller than the screen opening size) above the
horizontal screen blade to be returned to the space below the screen
when screens are exchanged.
For other applications different screen sizes (2” to 72” diameter)
with different hole sizes, different spacing and different face to face
dimensions can be selected.
There are other possible applications like a back up screen behind the
rotary screen for the recovery boiler, reducing possible plugging of the
heat exchangers and burners.
call us about your removable screen needs.
The Big Screen
is part of the SVC product family, i.e.
Big Knife, and Stargate O-Port®.