Working Principle of the Vacuum Homogenizing Emulsifier

Materials within the emulsification tank undergo continuous agitation via a central stirrer located in the upper section. PTFE scrapers, designed to precisely conform to the contours of the tank wall, constantly sweep away any adhering material; this action continuously exposes fresh material surfaces to the mixing process. Subsequently, the material is subjected to shearing, compression, and folding actions between the rotating blades and stationary vanes, ensuring thorough mixing and blending as it flows downward toward the homogenizer situated at the base of the tank. The material then passes through the homogenizer, where it is subjected to intense shearing, impact, and turbulent forces generated between a high-speed rotating cutting wheel and a stationary cutting sleeve (achieving a linear shear velocity of 27–40 m/s). Within this narrow shear gap, the material is rapidly cut and broken down into fine particles ranging from 200 nm to 2 µm, with a maximum achievable shear fineness of 0.2–5 µm. Furthermore, as the emulsification tank operates under a vacuum (typically ranging from -0.096 MPa to -0.098 MPa), any air bubbles generated during the mixing process are promptly extracted. Following homogenization, the material undergoes a forced circulation loop driven by the pumping action of the rotor/stator assembly; the product flows from the bottom of the vessel through the homogenizer, is propelled upward into the vessel, and then recirculates back down to the homogenizer. This forced circulation pathway ensures uniform mixing and maintains a constant temperature throughout the batch, making this recirculation emulsification technology particularly well-suited for processing high-viscosity materials. By utilizing vacuum technology, the finished product is effectively prevented from entraining air bubbles during the mixing process, thereby endowing it with enhanced gloss, fineness, and spreadability.