Water-saving type coating pretreatment cleaning machine

The invention belongs to the technical field of workpiece cleaning equipment, and relates to a water-saving type coating pretreatment cleaning machine. The technical problems that in the prior art, consumption of cleaning fluid is large, and the sewage treatment capacity is large are solved. The water-saving type coating pretreatment cleaning machine comprises a cleaning room, a degreasing cleaning mechanism and a hot water cleaning mechanism which are with a spray function are arranged in the cleaning room, and a backwater spray mechanism which can collect spray water of the degreasing cleaning mechanism and the hot water cleaning mechanism to form backwater and can pump the collected backwater to the front of the degreasing cleaning mechanism to be used for workpiece precleaning is arranged between the degreasing cleaning mechanism and the hot water cleaning mechasnim. According to the water-saving type coating pretreatment cleaning machine, the design is reasonable, sewage discharge can be reduced, and the effect of saving water is achieved.