Environment-protecting recycled aggregate screening and crushing device

The invention relates to the technical field of recycled aggregate treatment, in particular to an environment-protecting recycled aggregate screening and crushing device. The environment-protecting recycled aggregate screening and crushing device improves the recycled aggregate preparation efficiency of the device, increases the operation convenience, reduces the occupied working space and reduces the production cost. The environment-protecting recycled aggregate screening and crushing device comprises a working box, an adding hopper, supporting sliding grooves, supporting sliding rails, a mounting frame, a material blocking ring, a filter screen, a bearing, a mounting shaft, a power device and a transmission device, wherein the bottom end of the adding hopper communicates with an adding opening in the top end of the working box; the supporting sliding grooves are symmetrically formed in the front wall and the rear wall of a cavity of the working box, the supporting sliding rails are symmetrically arranged at the front end and the rear end of the mounting frame, and the supporting sliding rails are connected to the supporting sliding grooves in a matched and sliding mode correspondingly; the top end of the filter screen is arranged at the bottom end of the mounting frame, the bearing is arranged inside a shaft hole of the working box, and the mounting shaft is coaxially connected with the bearing in a matched mode; and the output end of the power device is coaxially connected with the rear end of the mounting shaft, and the transmission device is connected with the power device and the mounting frame in a matched mode correspondingly.