Mixer Shaft

What are the key factors to consider when selecting Mixer shaft?

1. Material
   Pick the right material for the Mixer shaft based on the medium’s chemical properties and the working environment. Common choices are stainless steel, carbon steel, alloy steel, or special alloys.
2. Dimensions
   Match the shaft’s diameter and length to the size of the mixing container and the mixing effect you want.
3. Strength
   The agitator shaft needs enough strength and rigidity to handle the load and torque during mixing.
4. Surface Treatment
   If the medium is corrosive, you may need to treat the shaft’s surface, like polishing, coating, or plating it.
5. Sealing
   Design the shaft’s seal to stop the medium from leaking, especially when dealing with harmful or valuable substances.
6. Bearing Setup
   Select the right type of bearings and how they’re arranged to keep the shaft running smoothly with low maintenance.
7. Drive Method
   Choose a drive method that fits the agitator’s power needs and application, like direct drive, belt drive, or gear reduction drive.
8. Speed
   Design the shaft to reach the required operating speed for the best mixing results.
9. Shaft Seal Type
   Pick the right shaft seal, such as a mechanical seal, packing seal, or magnetic seal, for different applications.
10. Connection
    Decide how to connect the agitator shaft to the drive or agitator, like using keys, flanges, or threads.
11. Corrosion Resistance
    For corrosive media, make sure the shaft’s material and surface treatment resist corrosion well.
12. Temperature Resistance
    The shaft should be able to handle temperature changes, whether it’s hot or cold.
13. Maintenance
    Think about how easy the shaft is to maintain and how much it costs to replace.

Dynamic Simulation Analysis

Using Siemens CCM software, Jingjin can conduct dynamic simulation analysis of agitators. This includes three-dimensional flow field and cross-sectional flow field analysis for specialized industries. Such simulations provide a more intuitive visualization of material flow within the reactor, enabling more accurate and rapid determination of optimal solutions. This allows for better selection regarding stirring effect, power, speed, and stirring form for various materials.

Classification of Stirring Paddles

1. Three-Blade or Four-Blade Flat Plates: Primarily used for slurry to prevent material precipitation.
2. Six-Blade Disc Paddles: Mainly used to disperse and stir gases in solutions.
3. Variable Cross-Section and Variable Inclination Paddles: Designed for mixing, decomposing, and reacting materials.
4. Frame-Type Stirring Paddles: Suitable for high-viscosity materials to prevent material precipitation.

Comparison of Jingjin’s Mixer Shaft with Other Products

1. Material and Construction: Jingjin’s mixer frames are welded and formed using carbon structural steel, offering greater strength compared to traditional cast iron materials.
2. Processing Capability: Jingjin can manufacture stirring shafts up to 13 meters in length, with flange and hub parts processed as a single unit to ensure concentricity. In contrast, some manufacturers produce multi-section shafts due to limited processing capacity, which can result in significant shaft end wobble.
3. Specialized Stirring Shafts: Carbon steel rubber-lined stirring shafts are suitable for strong acid environments. These shafts are lined with 8-10 mm thick vulcanized butyl rubber to isolate the main shaft from strong acids, making them suitable for various materials at temperatures below 90°C.