twin paddle mixer

The twin paddle mixer, also known as twin-shaft weightless mixer, is the core host equipment exclusively designed for full-automatic and semi-automatic dry mortar production lines. Featuring a horizontal twin-shaft counter-rotating structure with specially angled staggered paddles, the machine forms a continuous weightless fluidized mixing zone inside the cylinder. It delivers comprehensive three-dimensional mixing via convection, shearing, diffusion and tumbling, achieving homogeneous blending of coarse and fine materials including sand, cement, fly ash, functional powder additives and various fiber materials. Eliminating traditional dead mixing zones and material segregation defects, this twin-shaft design ensures rapid, stable and high-precision mixing. Adopting an all-closed wear-resistant industrial structure, the mixer supports long-term intermittent batch operation and seamless linkage with batching, conveying and packaging systems, serving as the standard core equipment for standardized, high-quality dry-mix mortar manufacturing.

• Zero Dead-angle & Ultra-high Mixing Uniformity: Interlaced twin-shaft paddle operation builds an all-round weightless mixing field with no blind zones. The mixing uniformity coefficient (CV) is controlled within ≤3%, enabling even dispersion of micro-additives, redispersible latex powder, cellulose and various fiber components. It completely avoids material agglomeration, stratification and color difference, ensuring consistent batch-to-batch mortar quality.
• High Efficiency & Remarkable Energy Saving: Optimized hydrodynamic paddle structure reduces operating resistance and idle power consumption effectively. The single-batch mixing cycle only takes 30–60 seconds, 3–5 times faster than conventional ribbon mixers. It improves overall line throughput significantly while cutting comprehensive energy consumption by 20%–30%.
• Weightless Mixing Without Segregation: Materials are fully suspended and fluidized in the weightless mixing area during operation. No floating, sinking or layered separation occurs even for materials with different density and particle sizes, perfectly adapting to multi-formula mixed mortar production.
• Industrial Wear-resistant & Long Service Life: Direct contact parts including mixing paddles and inner liners are made of high-chromium wear-resistant alloy. The thickened carbon steel cylinder resists impact, abrasion and corrosion, adapting to long-duration high-load industrial operation with extremely low failure rate and stable long-term performance.
• Fully Sealed & Eco-friendly Production: Equipped with multi-layer labyrinth and skeleton combined shaft end sealing structure, it thoroughly prevents fine powder leakage. It can be perfectly matched with pulse dust removal systems to realize dust-free, low-noise and green production, fully complying with environmental protection emission standards.
• Strong Compatibility & Intelligent Linkage: Widely applicable to ordinary construction mortar and various high-performance special mortars, including tile adhesive, putty powder, thermal insulation mortar, waterproof mortar and fiber-modified mortar. It supports seamless docking with PLC intelligent control systems to realize automatic formula switching and unmanned batch production.
• Easy Maintenance & Low Operational Cost: Designed with a large quick-opening inspection door and detachable paddle structure. Internal residue cleaning and replacement of vulnerable parts can be completed efficiently, greatly saving daily maintenance time and reducing long-term operating costs.

• Pre-start Inspection: Before startup, inspect paddle fastening status, internal cylinder cleanliness, sealing integrity and reducer lubricating oil level. Remove all foreign objects inside the mixing chamber. Strictly prohibit no-load startup with materials or overload startup to avoid mechanical jamming and motor burnout.
• Standard Feeding Management: Feed raw materials strictly in accordance with standardized production formulas. Hard impurities such as oversized stones and metal fragments are forbidden to prevent damage to paddles and liners. Micro-powder additives and fiber materials shall be added in uniform batches to avoid local agglomeration.
• In-operation Safety Control: Do not open inspection doors or touch any running components during equipment operation. Long-term overload operation is prohibited. Once abnormal noise, severe vibration, powder leakage or equipment overheating occurs, stop the machine and cut off power immediately for troubleshooting before restarting.
• Post-shutdown Cleaning: Thoroughly clean residual mortar and powder inside the cylinder after each production shift. Completely remove solidified deposits to prevent reduced mixing accuracy and accelerated wear in subsequent operation.
• Regular Maintenance & Inspection: Periodically replace reducer lubricating oil, check bearing operating status and shaft end sealing performance. Timely replace worn paddles, liners and sealing strips, and fasten loose bolts to maintain stable mechanical performance.
• Electrical Safety Specification: Keep the electrical control system dry and dust-proof with reliable grounding protection. Only professional technicians are permitted to repair and maintain electrical and transmission components. Always cut off the total power supply before maintenance work.
• Environmental Protection Operation: Ensure the supporting dust removal system operates normally during production. Maintain good workshop ventilation to guarantee clean, low-dust and environmentally compliant production conditions.

• Ordinary Construction Mortar Production: Suitable for mass production of masonry mortar, plastering mortar, bonding mortar and finishing mortar for civil construction, municipal engineering and infrastructure projects.
• Special Functional Mortar Production: Ideal for high-standard production of waterproof mortar, thermal insulation mortar, anti-crack mortar, floor self-leveling mortar, repair mortar and fireproof mortar.
• Building Powder Material Processing: Widely applied in mixing tile adhesive, wall putty powder, dry powder coating, joint grout, gypsum-based materials and other building powder products.
• Fiber Modified Mortar Production: Professionally adapted to polypropylene fiber, wood fiber and glass fiber reinforced modified mortar, effectively solving fiber agglomeration and uneven dispersion problems.
• Automatic Dry Mortar Line Matching: Standard supporting core equipment for small, medium and large semi-automatic and full-automatic dry mortar production lines, applicable to factory standardized continuous industrial production.

A: Different from traditional mixers with dead mixing zones and low efficiency, the twin paddle mixer adopts twin-shaft counter-rotating weightless mixing technology. It realizes dead-zone-free three-dimensional mixing with higher uniformity, shorter mixing cycle and zero material segregation. It performs excellently in dispersing trace additives and fibers, features lower energy consumption and higher stability, and fully meets high-standard industrial dry mortar production requirements.

A: The main causes include insufficient single-batch mixing time, concentrated feeding of fine additives and fibers, severely worn paddles, and residual solidified materials inside the cylinder. Corresponding solutions: properly extend mixing time, feed auxiliary materials in uniform batches, replace worn parts regularly, and thoroughly clean the mixer after each production shift.

A: Powder leakage is mainly caused by aging shaft end sealing components and loose sealing of inspection doors and discharge ports. Stop the machine and cut off power firstly, replace damaged sealing accessories in time, and fasten all connecting bolts to restore full sealing performance.

A: Yes. The equipment adopts a humanized structural design with a large quick-opening inspection door and detachable paddles, making internal cleaning and vulnerable parts replacement fast and convenient. The optimized composite sealing structure reduces daily maintenance frequency, and standardized wearing parts greatly lower long-term operation and maintenance costs.

A: Customization is fully supported. We can configure cylinder volume, matching power, overall dimensions and supporting systems according to customers’ output requirements, workshop space, mortar formulas and production standards to meet personalized production line configuration demands.

A: It is compatible with almost all dry-mixed building materials, including ordinary inorganic dry mortars, various functional modified mortars, fiber-reinforced mortars, and fine powder products such as wall putty, tile adhesive and dry powder coatings.