The sweep-in recovery shot blasting room is mainly composed of a room body, sandblasting equipment, abrasive recycling device, ventilation and dust removal device, abrasive sorting device, and electrical control device. To simplify the equipment, the abrasive recycling and ventilation and dust removal parts can be combined. The fan sucks all the abrasives, dust, and air flow into the abrasive centralized filter through the honeycomb floor. The dust-containing gas is filtered by the filter; the dust adheres to the outer wall of the filter, while part of the clean gas passes through the filter and is discharged outside the workshop, and another part is recycled into the sandblasting room. The abrasives and heavy dust continue to pass through the abrasive trough to the separator. The separator has an inner-outer cone structure, with an adjustable channel between the inner and outer cones. By adjusting the core body, the cross-section of the air flow channel can be changed, thereby adjusting the separation ratio. The separation process is as follows: when the abrasives and dust pass through the channel, due to the effect of gravity, the dust and gas go upward and come out through the gap between the cones, while the abrasives and coarse particles fall into the vibrating screen under the cones. The vibrating screen further separates the abrasives from the coarse particles. The separated pure abrasives enter the designated hopper through the sieve holes, then go to the sandblasting tank for recycling. The dust and gas passing through the separator are filtered again by another filter; the clean gas is discharged outside the workshop, and the dust falls into the waste hopper.