The working parts and technical parameters of the equipment should be compatible with the biological characteristics of the processed product and meet the processing requirements of the final product; strictly control the raw material, final product damage and quality degradation caused during the processing; for the final product is food or food raw material processing equipment , It is necessary to prevent the contamination of the final product by machinery or other materials to ensure that the final product meets the food hygiene requirements; to avoid the pollution of the environment by the emissions (slag, lees, slurry, liquid, gas, etc.) during food processing. Discharges should be equipped with processing equipment to meet the emission requirements; for foods containing multiple nutrients or medicinal ingredients, consideration should be given to reducing the loss of nutrients or medicinal ingredients from processing equipment; attention should be paid to the comprehensive development of by-products and leftovers , Make full use of resources and improve economic efficiency.

① Meet the requirements of relevant national industrial policies and standards: give priority to the selection and use of food machinery and equipment that are currently encouraged by the state, and focus on the selection and use of appropriate scale, high technology content, good economic benefits, low resource consumption, safety and health, and less environmental pollution , Equipment with high resource utilization efficiency; prohibit the selection and use of food machinery and equipment that are currently restricted and eliminated by the state, and focus on prohibiting selection and use that violate national laws and regulations, backward production methods, poor product quality, serious environmental pollution, high raw material and energy consumption , The existing advanced and mature technology replaces equipment that seriously endangers production safety; try to choose and adopt equipment with advanced standards and finalized products. First, focus on selecting equipment with international standards, foreign advanced standards and equivalent international standards, and secondly choose equipment with National standards, industry standards and enterprise standards for equipment, equipment design, manufacturing, installation, inspection and other technical conditions, it is best to be bound by the existing basic standards, method standards and safety standards, in order to facilitate the performance of the equipment and product quality Effective play.

②Meet the requirements of the project's process technology plan: meet the requirements of the product plan. Product plan refers to the leading products, auxiliary products and by-products of the planned food processing project, mainly including product variety, output, specifications, quality standards, technical content requirements, etc., to adapt to changes in product market demand and competitive situation; to meet the requirements of production scale . The production scale refers to the production capacity or service capacity that may be achieved in the normal production and operation years set by the proposed food processing project. It mainly considers the adaptability and matching of the production scale of the project. It must not only meet the performance requirements of different processed materials, but also Meet the rationality of the production capacity; meet the production process parameters. Production process parameters refer to various technical parameters that should be controlled during food processing, such as pressure, temperature, humidity, vacuum, extraction rate or yield, speed, purity, material consumption quota and energy consumption quota, etc. The equipment index is required It must be advanced, reasonable and practical; meet the requirements of material balance calculation. The production material balance is calculated based on the theory of conservation of mass. Its content means that the amount of material input into the system should be equal to the sum of the amount of material output by the system and the amount of material loss; it must meet the requirements of the project’s production process material balance, and To meet the requirements of the least loss of material; to meet the requirements of energy balance calculation. Energy balance is calculated based on the theory of conservation of energy. When selecting equipment, attention should be paid to the issue of energy consumption, and energy-saving, water-saving, steam-saving, power-saving, and heat-saving equipment should be selected as much as possible.

①Advanced technology: advanced equipment performance. It has a high performance-to-cost ratio, complete functions, low operation and maintenance costs, low unit product material consumption, low energy consumption, high processing level and processing capacity, stable equipment operation, low investment and product costs, and high production capacity and labor productivity. Long service life, etc.; advanced technology, with high technical content, is conducive to promoting technological progress and competitiveness, has a foundation for industrialization, can form a new economic growth point, and is in line with sustainable development; advanced equipment and equipment structure Reasonable, well-manufactured, high degree of continuity, mechanization and automation, with high safety and hygiene requirements.

② Strong applicability: adapt to market changes. Adapting to changes in local natural, economic and social conditions, the same production line hopes to be able to carry out multi-level deep processing, capable of production adjustment, and has a broad development prospect, which is conducive to opening up domestic and foreign markets; it matches the characteristics of the input, and considers the supply of resources as a whole. Processing requirements for raw materials and other auxiliary materials; when the selected equipment uses the same inputs, try to obtain a broader product portfolio than other equipment; to meet the process and technical requirements, it should match the production capacity of the project, and the main equipment and auxiliary equipment Compatible with each other; meet process requirements to ensure output and quality; meet the construction scale and product plan, meet the use and maintenance requirements under the existing technical conditions; meet the safety and environmental protection, ensure safe production, and minimize "three wastes" emissions ; According to the principles of ergonomics, consider the impact of equipment on the environment and operators.

③High reliability: high equipment maturity. Use equipment that has been fully verified and used, and cannot risk using equipment that has been converted to production without pilot testing. New equipment without production practice or remaining technical problems cannot be blindly adopted; production stability is high and it must not cause danger to personnel , No harmful substances exceeding national standards shall be discharged into the workplace and the atmosphere, and noise, vibration, radiation and other pollution shall not be generated exceeding national standards. It has a long service life, and the equipment can work for a long time without failure. If the equipment is put into use, it can be repaired, and it cannot be repaired after it reaches a certain limit.