Sludge water extractor screw with outer contour radial size capable of being fine adjusted

The utility model discloses a sludge water extractor screw with screw panel outer contour radial size capable of being fine adjusted. The sludge water extractor screw comprises an abrasion-proof strip and a gasket, wherein abrasion-proof strip is connected with the gasket through bolts along the outer contour of a screw panel of a screw. The abrasion-proof strip is a rectangular strip, and at least two counter bores used for radial installation of bolts are arranged on the centerline of the rectangular strip in the length direction. The outer contour of the screw panel of the screw is provided with a preset circular bead provided with a radial screw hole matched with the abrasion-proof strip, the gasket is arranged between the abrasion-proof strip and the circular bead and is locked through the bolts, and the thickness of the gasket is used for compensating the mounting dimension of the abrasion-proof strip in the radial direction. The gaskets with different thickness and a detachable structure are replaced t