Waste concrete regeneration device

The utility model relates to the technical field of recycling, and discloses a waste concrete regeneration device. The concrete block crushing device comprises a limiting barrel, a conveying mechanism and a processing mechanism, the conveying mechanism is erected on the upper surface of the limiting barrel, concrete blocks are gradually fed through the conveying mechanism, the one-time pouring amount is prevented from being too large, the processing mechanism is erected in the limiting barrel, and the processing mechanism rotates reversely through a crushing device so that the crushing effect can be better; and meanwhile, the treated concrete can be screened, a belt shaft drives a belt to rotate, the belt rotates to enable a plurality of triangular blocks and limiting plates arranged on the belt to prevent waste concrete blocks from rolling all around when the triangular blocks and the limiting plates rotate, and a first rotating shaft and a second rotating shaft drive a first rotating gear to rotate through