double shaft mixer

The double shaft mixer is the core host equipment of fully automatic dry mortar production lines. Adopting dual-shaft counter-rotating stirring structure and specially designed multi-angle stirring blades, the equipment forms a three-dimensional circulating stirring state inside the mixing chamber, realizing efficient shearing, rolling, scattering and uniform mixing of powdery, granular and fibrous mortar raw materials. It is mainly applicable for mixing cement, quartz sand, fly ash, mineral powder, rubber powder, fiber and various chemical admixtures. This mixer features fast mixing speed, high uniformity, no dead mixing zone and low residue. It can stably produce various dry mortar products such as ordinary masonry mortar, waterproof mortar, thermal insulation mortar, anti-crack mortar and wall putty powder. Matched with bucket elevators, storage silos, automatic batching systems and packaging machines, it can form a complete closed-loop automatic mortar production system, which is widely used in commercial mortar processing factories.

The dual-shaft counter-rotating operation mode cooperates with optimized spiral staggered blades to realize full coverage stirring inside the chamber without blind spots. It can evenly disperse trace additives and fibers in mortar raw materials, with the mixing uniformity reaching over 98%. It effectively avoids material segregation, uneven strength and color difference of finished mortar, ensuring stable and consistent product quality.

The inner lining plate and stirring blades are made of high-chromium wear-resistant alloy steel, which greatly improves the anti-wear and anti-impact performance during long-term stirring of mortar aggregates. All wearing parts are modularly designed and can be replaced independently without overall disassembly, effectively reducing later maintenance costs and downtime loss.

Adopting multi-layer labyrinth shaft end sealing and overall fully welded closed structure, it completely solves the problem of powder leakage during mortar stirring. Equipped with a professional dust removal interface, it supports matching with dust removal equipment to meet environmental protection production standards. The large pneumatic full-open discharge door ensures thorough discharging with extremely low material residue, avoiding raw material waste and cross-contamination of different mortar formulas.

Short single-batch mixing cycle, only 60-120 seconds per batch, supporting continuous cyclic production. Equipped with a high-efficiency reduction drive system, the equipment runs stably with low noise and low energy consumption. It can adapt to long-term 24-hour uninterrupted industrial production, perfectly matching the high-efficiency operation rhythm of large and medium-sized mortar production lines.

Compatible with automatic batching and PLC intelligent control system, realizing automatic feeding, stirring, timing and discharging. Equipped with overload protection, sudden stop protection, power-off self-locking and other safety devices. The reserved observation window and maintenance manhole facilitate real-time operation monitoring and daily equipment maintenance, with high operation safety and controllability.

Before starting the equipment, fully check the fastening degree of stirring blades, lining plates and connecting bolts to avoid loose parts falling off during operation. Inspect the integrity of shaft end sealing parts and dust removal devices to ensure no air leakage and powder leakage. Test the flexibility of pneumatic discharge gate, overload protection and emergency stop functions. Strictly prohibit load startup to prevent motor overload and equipment jamming.

Start the equipment for 2-3 minutes of no-load trial operation, and start feeding after confirming stable operation without abnormal noise and vibration. Feed materials strictly in accordance with the rated capacity and mortar formula proportion, and overloading operation is forbidden. It is prohibited to open the maintenance manhole or stretch hands and tools into the mixing chamber during equipment operation. Once abnormal vibration, noise, material accumulation or motor overheating is found, stop the machine immediately for troubleshooting.

After each production shift, thoroughly clean the residual mortar powder and agglomerates inside the mixing chamber to prevent material caking from affecting subsequent mixing quality and wearing parts service life. Regularly check the wear degree of blades and lining plates, and replace severely worn parts in time. Periodically lubricate the reducer, bearings and transmission components to ensure flexible transmission. Tighten loose bolts regularly to avoid equipment failure.

The equipment shall be installed on a solid and horizontal concrete foundation and fixed firmly with anchor bolts to prevent shaking and displacement during operation. Keep the air source pressure of pneumatic components within the standard range. Only professionally trained operators are allowed to operate the equipment. Cut off the power supply and air supply completely before all maintenance, cleaning and repair work to eliminate potential safety hazards.

Serves as the core mixing host for medium and large dry mortar production plants, suitable for mass production of various dry mixed mortar raw materials such as sand, cement and powder admixtures.

Applicable for customized production of high-quality special mortars, including waterproof mortar, thermal insulation mortar, anti-crack mortar, bonding mortar, repair mortar and fiber mortar.

Widely used in mixing and processing of various building powder materials such as interior and exterior wall putty powder, gypsum powder and mineral admixtures, adapting to multi-formula and multi-variety production demands.

Perfectly matched with automatic batching system, storage silos, bucket elevators and packaging machines to realize integrated automatic production, improving the overall automation level and production efficiency of mortar factories.