Overview
The Double Cone Blender is a versatile industrial mixer designed for dry powder and granule homogenization. Its unique double-cone-shaped vessel rotates along a horizontal axis, ensuring thorough mixing without damaging fragile particles. Widely adopted in pharmaceuticals, food processing, and chemical industries, it complies with GMP and FDA standards due to its hygienic design and easy cleanability. Unlike ribbon blenders, it operates without internal agitators, reducing heat generation and product degradation. The machine is favored for its scalability, with capacities ranging from 50 liters to 10,000 liters, making it suitable for both R&D and large-scale production.
Structure and Working Principle
The blender consists of a conical vessel mounted on a rotating frame, driven by an electric motor via a gearbox. As the vessel rotates at 5–25 RPM, materials are lifted by gravity and cascade downward, creating a three-dimensional mixing effect. Some models include baffles or intensifier bars to enhance shear for cohesive powders. The absence of dead zones ensures uniformity, with typical mixing times of 10–20 minutes. The vessel is often jacketed for temperature control, and discharge valves are positioned at the cone apex for complete evacuation. Customizable options include CIP/SIP systems, vacuum loading, and explosion-proof motors for hazardous environments.
Key Features
Gentle blending action preserves particle integrity, making it ideal for APIs (Active Pharmaceutical Ingredients) and flavor mixes. The machine’s 360-degree rotation guarantees a mixing homogeneity of ≥99% with minimal energy consumption (0.5–3 kW per 100 liters). Stainless steel construction (SS304/316) ensures corrosion resistance and meets sanitary standards. Optional features include PLC controls for automated cycles, load cells for batch monitoring, and polished surfaces (Ra ≤0.4 µm) for sticky materials. Noise levels are kept below 75 dB, complying with workplace safety regulations.
Application Areas
Pharmaceuticals: Blending excipients, tablet formulations, and nutraceuticals. The blender’s closed system prevents cross-contamination, critical for potent drugs. Food Industry: Mixing spices, instant drink powders, and flour additives. USDA-approved designs facilitate easy inspection. Other uses include ceramics (glaze preparation), cosmetics (pigment dispersion), and plastics (masterbatch production).
Maintenance and Precautions
Regularly inspect seals and gaskets to prevent leakage. Lubricate bearings every 500 operating hours using food-grade grease if applicable. Clean surfaces with neutral detergents; avoid abrasive tools that could scratch stainless steel. Overloading beyond 60% of total volume reduces efficiency. For flammable materials, use grounded vessels and inert gas purging. Always lock the power supply before servicing rotating parts to prevent accidents.
B2B Procurement Guide
Specify vessel volume, material grade (e.g., SS316L for acidic compounds), and regulatory needs (e.g., ATEX certification for explosive dust). Request FAT (Factory Acceptance Testing) to verify performance. Compare motor efficiency (IE3/IE4 class) for long-term cost savings. Leading manufacturers include GEA Group, Charles Ross & Son, and Yenchen Machinery. Used equipment auctions offer cost savings but require thorough inspection for wear. MOQs for custom orders typically start at 1–3 units, with lead times of 8–12 weeks.
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