Dust falling device for waste recovery treatment

The utility model discloses a dust falling device for waste recovery treatment, which relates to the technical field of dust falling devices and comprises a crushing box, a feeding component, a secondary crushing component, a primary crushing component, a cleaning component and a dust falling component. A feeding hole is formed in the rear end of the crushing box; the feeding assembly is arranged on the upper side of the rear end of the crushing box; the secondary crushing assembly is arranged in the middle of the crushing box; the primary crushing assembly is arranged at the bottom end of the feeding assembly; the cleaning assembly is arranged at the bottom end of the crushing box; the dust falling assembly comprises a connecting plate, an air pump, a conveying pipe, a water tank, a filter screen and a water outlet, the left end of the smashing box is fixedly connected with the conveying pipe, one end of the conveying pipe is located in the smashing box, the other end of the conveying pipe is located in the