dual shaft mixer

The dual shaft mixer is a professional high-efficiency horizontal mixing machine specially developed for dry mortar, construction materials, chemical powder and industrial granular blending industries. Featuring twin-shaft counter-rotating operation and multi-angle staggered blade layout, the equipment creates a powerful weightless turbulence mixing zone inside the mixing chamber. It eliminates traditional dead mixing corners and realizes rapid, uniform and non-segregation blending of cement, quartz sand, gypsum, powder additives, fiber materials and other multi-component mortar raw materials.

Different from single-shaft or ribbon mixers, the dual shaft mixer delivers stronger material shearing, higher mixing uniformity and faster batch cycling. It supports fully enclosed dust-free production, precise formula reproduction, and stable mass production consistency. Widely adopted in automatic dry mortar production lines, it serves as the core host equipment for standard construction mortar, decorative mortar, functional mortar and special industrial powder production.

Equipped with two synchronous counter-rotating mixing shafts and scientifically arranged composite blades, the machine forms a 360° circulating turbulent flow field. Materials are continuously lifted, dropped, flipped and sheared in all directions, achieving thorough mixing without dead zones. Even for formulas containing ultra-fine powder, light fiber and heavy aggregate, the mixer maintains stable homogeneity above 99%, ensuring consistent mortar strength, color and construction performance for every batch.

Thanks to the dual-shaft mutual stirring acceleration effect, the mixing cycle is greatly shortened. A complete blending process only takes 2.5 to 4 minutes per batch, supporting continuous high-volume production. The efficient working principle avoids repeated stirring and wasted power, significantly improving line output while lowering unit energy consumption, perfectly matching medium and large-scale automated mortar factories.

Traditional mixers often cause component floating, fiber breakage or powder grading due to single-direction rolling. The dual shaft mixer adopts bidirectional convection mixing, which protects material particle gradation and fiber integrity. All additives, adhesives and functional powders are evenly dispersed without segregation, effectively reducing finished product cracking, color difference and strength deviation.

Mixing blades, shaft ends and liner plates are made of high-chromium wear-resistant alloy or thickened carbon steel, specially optimized for high-abrasion mortar materials. The integrated rigid frame and reinforced transmission system resist long-term impact and fatigue operation. The whole machine runs stably with low vibration, greatly reducing replacement frequency of wearing parts and lowering overall production and maintenance costs.

Full sealed body, multi-layer shaft-end sealing and matched dust removal interface effectively prevent powder leakage and flying dust during high-speed operation. The closed mixing environment avoids external impurity contamination and meets modern environmental protection and workshop safety standards. It greatly improves workshop cleanliness and reduces material loss rate.

Equipped with PLC intelligent control system, the mixer can store multiple mortar formulas, realize precise timing, fixed-speed mixing and automatic discharging. It can be seamlessly linked with bucket elevators, batching systems, silos and packaging machines to form a fully automatic unmanned mortar production line, easy for both new line installation and old line upgrading.

• Mixing Mode: Horizontal dual-shaft counter-rotating weightless mixing
• Batch Volume: 50L – 12000L (customizable)
• Production Capacity: 5–60 tons/hour
• Main Motor Power: 7.5kW – 90kW
• Mixing Cycle: 2.5–4 minutes per batch
• Mixing Uniformity: ≥99%
• Discharging Method: Pneumatic large-opening quick discharge
• Control System: PLC automatic intelligent control
• Body Material: Heavy-duty carbon steel / stainless steel optional
• Sealing Type: Multi-layer anti-leakage shaft seal
• Working Condition: 24-hour continuous industrial operation

Before startup, check the tightness of blades, connecting bolts and shaft seals. Ensure no foreign objects inside the mixing tank. Test motor rotation, pneumatic cylinder and control system to confirm stable standby status. Never start the machine with loaded materials to avoid stalling or motor burnout.

Start the mixer first, then feed materials evenly. Strictly prohibit overloading operation. Do not open the cover or touch internal components during running. For fiber-containing and high-precision mortar formulas, maintain standard mixing time to ensure uniform dispersion without material damage. Stop feeding before shutdown and empty all materials to prevent internal caking.

Clean residual powder and mortar after daily production to avoid hard caking affecting future mixing quality. Regularly lubricate bearings and transmission parts. Check blade wear and seal aging every week, replace vulnerable parts timely to keep mixing accuracy and sealing performance stable.

The equipment must be firmly grounded. All maintenance work must be performed after power-off and shutdown. Keep the dust removal system normally open during production. For long-term shutdown, keep the inner tank dry and clean to prevent corrosion and material deterioration.

• Construction Mortar: Masonry mortar, plaster mortar, bonding mortar, waterproof mortar, thermal insulation mortar, anti-crack mortar
• Decoration Mortar: Tile adhesive, grout, self-leveling mortar, interface agent, putty powder, color decorative mortar
• Functional Engineering Mortar: High-strength repair mortar, anticorrosive mortar, fireproof mortar, special inorganic mortar
• Other Industrial Fields: Building material powder, chemical powder, metallurgical powder, new material formula mixing

Dual counter-rotating shafts produce mutual convection and turbulence, completely eliminating mixing dead zones. It provides higher mixing uniformity, faster cycle time and no material segregation. Single-shaft mixers easily cause floating powder, fiber aggregation and uneven strength, which cannot meet high-standard dry mortar mass production requirements.

It is usually caused by insufficient mixing time, uneven feeding, worn blades leading to dead zones, or residual caking inside the tank. Regular cleaning, timely inspection of wearing parts and standardized formula operation can perfectly solve such quality problems.

Yes. It can fully link with automatic batching system, bucket elevator, silo system and packing machine to realize fully automatic circulating production, greatly saving labor and improving production consistency.

No. The fully enclosed structure and professional multi-layer sealing design ensure almost zero dust leakage. It matches industrial dust removal system easily to achieve environmentally friendly zero-emission production.

Absolutely. The turbulent weightless mixing principle ensures gentle but powerful blending. Fibers can be evenly dispersed without breaking, and trace additives can be distributed uniformly, which is ideal for high-end functional mortar production.

Clean residue daily; lubricate transmission parts every 7–10 days; inspect blades and seals every month; replace severely worn parts quarterly. Scientific maintenance ensures long-term stable and high-efficiency operation.