B series sprayer increase an air decontamination system in the fundation at the basis of A type machine,meanwhile ,we attach a cleaning system.it can collect the redundant paint mist during the spray-painting process,through water mist's purifying by mangy drencher heads ejected that behind the drencher cunrtain board,then drained by exhaust fan.Besides,we have a protection system,the protective door can be moved up and down automatically,so as to seel the spraying space .