Patent ID: 7695348

Claim:
An abrasive-recovery mechanism in a blasting machine, comprising: a cabinet in the blasting machine; a mesh member dividing the cabinet into an upper space and a lower space, the mesh member capable of letting an abrasive pass therethrough; a blasting chamber having a bottom wall surface defined by the mesh member; and a set of two columns of a plurality of hoppers formed by disposing dividing plates each of which is substantially shaped like an inverted triangle in two parallel groves composing a gutter that is substantially W-shaped in cross-section to define and divide a space in each of the two parallel grooves into an inverted quadrangular pyramid, the plurality of hoppers being disposed below the mesh member, wherein top portions of the plurality of hoppers are opened toward the mesh member, the set of two columns of the plurality of hoppers formed in the gutter and a recovery pipe that is attached to the gutter and communicates with the bottom end of each of the plurality of hoppers constitute a recovery unit such that a direction in which the plurality of hoppers are arranged is defined as a length direction, and at least one of the recovery units is disposed below the mesh member, the recovery pipe is a rectangle in cross-section, and the bottom end of each of the plurality of hoppers communicate with suction means through a recovery pipe at either rend of the long side of the cross-section.