Pan Type Concrete Mixer Information

What is a Pan Type Concrete Mixer

A Pan Type Concrete Mixer is a stationary or mobile machine with a circular pan and rotating blades/blades to mix cement, aggregates, and water into uniform concrete. Known for high homogeneity, it's widely used in construction sites and precast plants.

History of Pan Type Concrete Mixer

First developed in the 1930s for large-scale infrastructure projects, early models used manual pan rotation. Hydraulic drives were introduced in the 1950s, while modern versions from the 2000s feature planetary blade movements and digital timers. Today, they dominate the ready-mix concrete industry.

Purpose of Pan Type Concrete Mixer

Produces consistent concrete batches (0.1-2 m³ capacity) for structural applications. Ideal for stiff mixes requiring thorough blending. Reduces material segregation and ensures compliance with mix design specifications.

Principle of Pan Type Concrete Mixer

Rotating blades (stars) move through a stationary or rotating pan. The blades' planetary motion (rotation around their axis while orbiting the pan center) creates shear forces that mix materials. Mixing time typically ranges from 90-180 seconds per batch.

Features of Pan Type Concrete Mixer

• Planetary Blades: 2-4 blades with dual-axis rotation
• Wear-Resistant Pan: Hardened steel or chromium lining
• Variable Speed: 20-40 RPM mixing speed control
• Quick Discharge: Bottom-opening gates for fast unloading
• Auto-Reverse: Prevents material buildup on blades

Types of Pan Type Concrete Mixers

• Single-Shaft: Basic models for small batches
• Twin-Shaft: High-intensity mixing for RCC
• Tilting Pan: Facilitates complete discharge
• Stationary Pan: Fixed units for plant installations
• Mobile Units: Skid-mounted for site mobility

Precautions for Using Pan Type Concrete Mixer

• Load Limits: Never exceed 80% of rated capacity
• Blade Clearance: Maintain 3-5mm gap from pan floor
• Material Sequence: Add aggregates before cement
• Lubrication: Grease bearings every 50 operating hours
• Emergency Stop: Install accessible cutoff switch

Things to Consider When Purchasing

• Batch Size: Match to project requirements (0.25-2 m³)
• Power Source: Electric (15-75 kW) vs. diesel options
• Blade Design: Replaceable tungsten carbide tips
• Mixing Time: 90-150 seconds per cycle standard
• Warranty: Minimum 2 years on critical components

Terms of Pan Type Concrete Mixer

• Planetary Motion: Blades rotate around own axis + pan center
• Batch Cycle: Loading, mixing, discharge sequence
• W/C Ratio: Water-cement ratio precision (±0.02)
• Pan Diameter: 1,200-3,000mm standard sizes
• Mix Homogeneity: ≥95% consistency across batch