How static mixer works on plastic injection molding

The working principle of the static mixer is to let the fluid flow in the pipeline and impact various types of plate elements, increasing the velocity gradient of the fluid laminar movement or forming turbulent flow. In laminar flow, it is "segmentation-position movement-remerge". In turbulent flow, In addition to the above three situations, the fluid will also generate severe eddy currents in the cross-sectional direction, and a strong shear force will act on the fluid, causing the fluid to be further divided and mixed, and finally mixed to form the required emulsion. The reason why it is called a "static" mixer is that there are no moving parts in the pipeline, only stationary elements.

The mixing process of the static mixer is carried out by a series of mixing units of different specifications installed in the hollow pipe. Due to the function of the mixing unit, the fluid sometimes rotates to the left and sometimes to the right, constantly changing the direction of the flow mixer, not only pushing the central fluid to the periphery, but also pushing the peripheral fluid to the center, resulting in a good radial mixing effect. At the same time, the rotation of the fluid itself will also occur at the interface between adjacent components. This perfect radial circulation mixing effect makes the materials evenly mixed. Static mixer is a kind of high-efficiency mixing equipment without movement. Through the internal parts of the mixing unit fixed in the tube, two or more streams of fluids can be cut, sheared, rotated and remixed to achieve good dispersion and full mixing between fluids.

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