A space motion mixer comprises a
crank arm, a rocking bar, a container frame, a mixing container, a
machine frame, a
speed reduction gearing, a motor, etc. The mixing container with a
helical line-shape scraping blade therein is arranged inside the container frame, two ends of the container frame are mechanically connected to the
crank arm via a ball pair and the rocking bar via a
universal joint respectively, and the
crank arm and the rocking bar are respectively connected with a rotary pair and the
machine frame. When the crank arm rotates in a complete alternation, the rocking bar swings around the
machine frame, and the mixing container has a space motion containing rotation and movement; because of the space quick return motion and
helical curve scraping blade, the materials in the container can generate a three-D projecting motion along axial, radial and circumferential directions for driving materials to be in a conglomeration and
diffusion motion alternately for thorough mixing to have a good
mixing effect and a high mixing efficiency, additionally, the invention is provided with simple structure, and can be controlled conveniently and manufactured easily.