Patent ID: 6022451
Filing Date: 2000-02-08
Classification: D21G

Abstract:
A contaminant removal assembly for removing contaminants from a surface of a cylindrical roll, wherein the roll has a direction of rotation about an axis of rotation of the roll, the assembly comprising an elongated support member having an axis of rotation of the support member parallel to the axis of rotation of the roll, a hood extending longitudinally of the support member and mounted in a cantilevered manner to the support member for pivoting movement therewith, a doctor assembly provided for doctoring the surface of the roll, the doctor assembly comprising a doctor support and a doctor blade mounted to the doctor support and extending upstream of the doctor support and having an edge in contact with the surface of the roll; the doctor support and the doctor blade extending parallel and spaced apart to the axis of rotation of the roll and the axis of rotation of the support member, the support member being spaced apart from the doctor blade assembly, and the contaminant removal assembly is positioned upstream of the doctor assembly and adjacent thereto, the hood extending downstream of the support member and over the surface of the roll, the hood including flexible seal means extending longitudinally along an edge of the hood and adapted to come into sealing contact with an upper surface of the doctor blade, means for creating an airstream between the hood, the surface of the roll and the doctor blade in the longitudinal direction of the hood, exhaust means at an end of the hood whereby contaminants borne by the airstream will be removed from the area between the hood and the surface of the roll.