Ring-rail shot blasting equipment can be used for surface cleaning and strengthening of large and medium-sized castings and forgings and steel structural parts in machinery manufacturing, pressure vessels, automobiles, ships, construction, motors and other industries. It is used to improve the appearance quality and surface processing conditions of product parts. For large workpieces that can be suspended, two electric hoists can be used to hoist the workpiece to the shot blasting area and blast the workpiece. A number of impeller heads were arranged by computer simulation. The surface of the workpiece can be thoroughly cleaned to achieve the purpose of removing rust and rust, corrosion of steel structure, old paint and other dirt. The patented cavity protection and sealing structure makes the equipment have the characteristics of advanced structure, high production efficiency, good cleaning quality and high degree of automation.