Shot blasting machine clean-up process controlled by the electric speed conveyor roller steel structure or steel body projectile sent to the cleaning machine room, shot blasting machine, its whole body surface to be from a different coordinate position and intensive projectile combat friction, so that of its oxide scale, rust layer and its dirt to fall off rapidly, the steel surface to a certain roughness of the smooth surface, clean up the import and export of outdoor on both sides of the roller loading and unloading of the workpiece. Fall into the steel projectiles above with rust dust purge to purge, scattered down the pill dust mixture from recycled screw conveyor to the funnel of the chamber body, vertical and horizontal screw conveyor brings together on improving the lower part of the mention of separation rose to the upper part of the machine device, after the separation of pure projectile fell into the hopper of the splitter, for shot blasting cycle. Shot blasting, dust, sent by the exhaust pipe to the dust removal system, the purification treatment of net gas emissions into the atmosphere, particulate dust capture collection. General sub-roller type and catenary through shot blasting machine