1. Determine core process parameters: Calculate the required mixing power and blade diameter based on the container's volume, diameter, height, as well as the required mixing intensity and mixing time for the process; Determine the appropriate stirring speed based on fluid characteristics, with a typical speed range of 20-200r/min for conventional water treatment conditions.

2. Choose the type of mixing blade: Based on the process objectives, fluid viscosity, and phase characteristics, select the corresponding blade form. For complex working conditions, multi-layer blades or different types of blade combinations can be used to further optimize the mixing effect.

3. Choose the driving and speed regulation method: Standard motors with gear reducers are selected for conventional working conditions; Choose a variable frequency motor and frequency converter for situations that require speed regulation; Explosion proof environment must use explosion-proof motors and reducers; High power mixers can be equipped with planetary reducers or cycloidal pinwheel reducers.

4. Determine the sealing form: For atmospheric pressure and non flammable and non explosive media, use packing sealing; Single end mechanical seals are selected for low-pressure and generally corrosive media; Double end mechanical seals are selected for high-pressure, vacuum, flammable, explosive or toxic media, and a sealing liquid circulation system can be configured.

5. Choose equipment materials: Select appropriate materials based on the corrosiveness, temperature, pressure, and industry hygiene requirements of the medium. Conventional water treatment can use carbon steel lined with rubber or 304 stainless steel, while strong corrosion conditions can use 316L stainless steel or lined with plastic. The food and pharmaceutical industry requires the use of sanitary grade stainless steel.

6. Configure auxiliary systems: Configure auxiliary components such as variable frequency control cabinets, temperature sensors, liquid level sensors, torque protectors, explosion-proof devices, etc. according to requirements; Large mixers should use reinforced frames and bearings to ensure long-term stability during operation.

7. Compliance with standard requirements: The equipment should comply with HG/T 20569-2013 "Mechanical Mixing Equipment" and relevant industry standards to ensure product quality and safe use.