Design and Verification of A Restaurant-Kitchen Waste Disposal Machine and Its Screw Extruder

China's restaurant-kitchen waste production is huge, with high water content, complex components and other characteristics, if not properly handled, will cause serious environmental pollution. Through reasonable policy guidance and technological innovation, the scientific treatment of restaurant-kitchen-waste can not only reduce environmental pollution, protect the ecological environment, but also realize the efficient use of resources, and promote the sustainable development of the city. First of all, this paper summarizes the overall function of the designed restauant-kitchen waste disposal machine. On this basis, it focuses on the design and improvement of the core component of the reducer screw extruder, chooses the appropriate material, carries out the rational design of the structure, and makes the prototype, conducts the experimental test on the performance parameters of the prototype, and briefly analyzes the results. The effects of screw extruder filling rate, screw rotation speed and mounting elevation on extruding effect of solid food waste were mainly tested, and the best operating parameters were tried to be found out. Finally, a reasonable outlook is given for the future upgrading of the product. First of all, this paper summarizes the overall function of the designed kitchen waste treatment machine. On this basis, it focuses on the design and improvement of the core component of the reducer screw extruder, chooses the appropriate material, carries out the rational design of the structure, and makes the prototype, conducts the experimental test on the performance parameters of the prototype, and briefly analyzes the results. The effects of screw extruder filling rate, screw rotation speed and mounting elevation on extruding effect of solid food waste were mainly tested, and the best operating parameters were tried to be found out. Finally, a reasonable outlook is given for the future upgrading of the product.