Excrement Solid-Liquid Separation Extrusion Sterilization

The patent combines the solid-liquid separation function with the dehydration function into a single integrated machine. The extrusion sterilization device is directly connected to the solid-liquid separator, allowing feces to be dehydrated immediately after separation without requiring separate equipment or processes. This merging resolves the contradiction by maintaining the separation benefit while adding the dehydration capability to reduce water content.

The patent replaces traditional mechanical dehydration methods (such as pressure plates or centrifugal separators) with an extrusion-based mechanical system. The extruding shaft with spiral extruding blades mechanically presses and squeezes water from the feces through a dehydrating cage, achieving effective dehydration through controlled mechanical extrusion rather than relying on gravity-based separation alone.

The patent merges three functions (solid-liquid separation, dehydration, and sterilization) into a single integrated processing line. The extrusion sterilization device performs both dehydration and sterilization in one step by combining mechanical extrusion with heat treatment, eliminating the need for separate sterilization equipment and simplifying the overall system while achieving reliable germ elimination.

The patent utilizes parameter changes in the extrusion process to achieve both dehydration and sterilization. By controlling the extrusion pressure, temperature, and residence time within the extrusion sterilization device, the system transforms the physical and biological properties of the feces, effectively reducing water content and eliminating germs through controlled thermal and mechanical parameters.