Sandblasting room called peening room, playing sand, mainly used in some large surface cleaning, derusting, increase the adhesion between the workpiece and the coating effect, large parts before painting in general use sandblasting surface treatment were discussed, aimed to obtain the rough flat surface, in order to improve the adhesion of the coating and decoration. Sandblasting system has a closed end and an open two. For large workpiece generally using open blasting system in sand blasting room for product sandblasting, sprayed by the recovery device of automatic recovery of abrasive. According to abrasive recycling means different, sandblasting system can be divided into mechanical and pneumatic two, mechanical sandblasting abrasive recycling system by the horizontal conveying device and a lifting device, pneumatic sandblasting abrasive recovery by air conveying system