Raw material washing and screening device for highway engineering test detection

The utility model discloses a raw material washing and screening device for highway engineering test detection. The raw material washing and screening device comprises a material mixing assembly, a screening assembly and a washing assembly. The washing assembly is arranged at the top end of the mixing assembly; the screening assembly is arranged in the mixing assembly in a sliding manner; the mixing assembly comprises a mixing barrel, a feeding hopper and a water outlet pipe; the screening assembly comprises a screen piece, two driven lifting pieces, two elastic pieces and two driving lifting pieces. One end of the passive lifting piece penetrates through and extends into the mixing barrel and is fixedly connected with the screen piece, and the other end of the passive lifting piece extends out of the mixing barrel; the screen piece is positioned in the mixing barrel; the elastic piece is located below the passive lifting piece. The driving lifting piece is arranged on the outer side of the mixing barrel and