HL-QPS series large sandblasting room is mainly used to process large or special and complex structure workpiece, to achieve surface cleaning, rust removal, increase the coating adhesion of the workpiece and other effects. The blasting gun installed in the sandblasting room does the sandblasting by using compressed air as the driven power, the metal abrasive as the medium. The blasting room is equipped with the trolley to carry the workpiece in and out, and with the automatic abrasive recycling, sorting, dust collecting, etc.