I. Key Points of Blade Structure Design

1. High-Speed Shear Blade Heads
   Multi-layered blades or double-layered lotus-shaped blades are commonly used, rotating at 1440 RPM to generate centrifugal and shear forces for effective caking breakup. Some models feature detachable blade heads for easy replacement of worn parts.

2. Tilted Installation Angle
   Blade sets are typically installed at a 45° downward tilt on the mixer's sidewall, ensuring thorough dispersion as materials flow through the mixing chamber.

3. Material and Wear Resistance
   Blades are made of wear-resistant steel (e.g., 316L stainless steel) or undergo hardening treatments to withstand high-wear environments, especially for fibrous or clumped materials.

II. Anti-Caking Technical Solutions

1. Synergy Between Blades and Plough Blades
   Plough blades create radial turbulence to push materials along the wall, while high-speed blades perform shear cutting on clumps. For example, the Qizhuo plough blade mixer achieves uniform mixing within 3-15 minutes.

2. Bottom Scraping Mechanism
   Some designs (e.g., patented models) integrate spiral auxiliary blades and scrapers to clean residual materials along the wall, maintaining a clearance of ≤5 mm from the inner wall.

3. Auxiliary Measures

   • Steam/Heating Jackets: Soften viscous materials before breaking;
   • Spray Systems: Install atomizing nozzles above blades to moisten clumps;
   • Variable Frequency Drives: Adjust blade speed based on material properties.

III. Application Scenarios

1. Food Industry: Handles clumpy materials like konjac and cellulose, achieving 99% uniformity.
2. Chemical/Construction: Breaks agglomerates in battery materials and dry mortar.
3. Pharmaceuticals/Feed: Resolves adhesion-induced caking in wet mixing.

IV. Maintenance and Selection Guidelines

1. Regular Inspections: Replace blades if wear exceeds 10%, and calibrate scraper-wall gaps monthly.
2. Customized Models: Select sealing types (e.g., mechanical seals) and motor power based on material density and viscosity

Doebritz China is a joint-venture of Doebritz German and some expert in China powder handling industry with rich experience. The mission of the company is to provide high cost-performance product to the market. At the moment, 4 major products are the key. Dosing valves from Doebritz German, FG sifters from British, tipping station and integrated tipping station, coating and mixing system.