Patent ID: 7077260

Claim:
A device for cleaning an endless porous moving belt, said device being characterized by a movable cleaning head comprising a) spray means for applying a forceful stream of cleaning solution to a portion of said moving belt, b) a vacuum head immediately following said spray means including vacuum means for applying a suction force to remove spent cleaning solution and loosened and dissolved contaminants from said porous belt, said vacuum head being supported independently from said spray means by a hinge mount and a pressurized pneumatic cylinder resiliently opposing movement of said vacuum head about said hinge mount and away from said moving belt surface, thereby holding the vacuum head in predetermined proximity to the moving belt surface while permitting controlled resilient movement away from said surface in response to passing debris, c) traversing means for moving said cleaning head across the full width of said porous belt in a predetermined pattern whereby after a predetermined number of passes past said cleaning head the entire moving belt surface will be effectively covered and cleaned, said traversing means including a supporting track for guiding said movable cleaning head along a path substantially transverse to the direction of movement of said moving belt, and d) operating means including an electric motor driving a worm gear substantially parallel to said supporting track for driving said moveable cleaning head along said substantially transverse path, said operating means having limit sensing means for detecting the approach of said movable cleaning head and causing it to reverse direction and to return along said supporting track in an opposite direction.