Screening grinding stirrer for building construction

The invention discloses a screening grinding stirrer for building construction. The screening grinding stirrer comprises a supporting enclosure barrel, a rotary inner barrel, a screening plate and grinding teeth, wherein a splicing slot hole is formed in the bottom plate of the supporting enclosure barrel; the inner part of the splicing slot hole is spliced with a first drive motor; the first drive motor is in lap joint on the plate surface of a bearing sealing plate; the bearing sealing plate is in threaded connection on the bottom plate of the supporting enclosure barrel; the top end of thefirst drive motor is spliced in a positioning hole in the bottom plate of the rotary inner barrel; a slide rail is arranged on the surface of the rotary inner barrel; the inner part of the slide railis spliced with a guide slide plate; a screening plate is fixedly connected on the inner wall of the rotary inner barrel; an unloading hole is formed in the plate surface of the screening plate; the inner part of the rotary in