double shaft paddle mixer

The double shaft paddle mixer is professional core mixing equipment specially designed and optimized for full-automatic dry mortar production lines. Adopting horizontal dual-shaft counter-rotating operation and staggered paddle structure design, the equipment forms a powerful three-dimensional convection, shearing and tumbling mixing effect inside the mixing chamber. It achieves rapid and homogeneous mixing of powdery, granular and short-fiber mortar raw materials, including quartz sand, cement, fly ash, mineral powder, rubber powder, cellulose and various functional admixtures. Different from traditional mixing equipment, this paddle mixer has no dead mixing zones, features low material residue, high mixing uniformity and fully sealed dustproof performance. It is widely applicable for mass production of ordinary plastering mortar, masonry mortar, waterproof mortar, thermal insulation mortar, anti-crack mortar and interior and exterior wall putty powder. It can be perfectly matched with bucket elevators, storage silos, automatic batching systems and packaging machines to form a complete closed-loop automatic dry mortar production line.

Equipped with two counter-rotating horizontal shafts and multi-group staggered paddles, the equipment generates continuous cross-flow and circulating turbulence of materials. It realizes omnidirectional flipping and mixing of mortar materials, completely eliminating mixing blind areas. The uniform dispersion of trace additives and fiber materials is guaranteed, with mixing uniformity reaching above 98%, effectively avoiding finished mortar quality fluctuation and material segregation.

The mixing paddles and inner chamber lining plates are made of high-chromium wear-resistant alloy steel, which can resist long-term abrasion and impact of mortar aggregates such as quartz sand. All wearing parts adopt independent modular design, allowing single damaged or worn parts to be replaced separately without overall equipment disassembly. It greatly reduces daily maintenance cost and shortens production downtime.

The shaft end adopts multi-layer labyrinth composite sealing structure to effectively prevent fine mortar powder leakage. The fully welded closed fuselage is equipped with a reserved dust removal interface to support centralized dust collection, meeting modern environmental protection production standards. The large pneumatic full-open discharge door features fast discharging and ultra-low residual materials, preventing cross-contamination of different mortar formulas and reducing raw material waste.

Optimized paddle operation track greatly shortens the mixing cycle, with a single batch mixing time controlled within 60-120 seconds. Equipped with a heavy-duty gear reduction transmission system, the equipment runs stably with low noise and low energy consumption. It supports 24-hour uninterrupted intermittent batch production, fully adapting to the high-efficiency production rhythm of medium and large commercial mortar production lines.

The mixer is compatible with PLC automatic control system, realizing automatic feeding, timing mixing and intelligent discharging. It is standard equipped with overload protection, emergency stop device and power-off self-locking function to prevent motor burnout and equipment failure caused by overloading. The reserved observation window and large-scale maintenance manhole facilitate real-time operation monitoring, internal cleaning and daily inspection.

Check the fastening condition of internal paddles, lining plates and connecting bolts before equipment startup. Confirm the integrity and tightness of shaft end sealing components to avoid powder leakage during operation. Test the sensitivity of pneumatic discharge gate, overload protection and emergency stop functions. Strictly prohibit load startup to prevent motor overload, paddle deformation and material blockage faults.

Perform 2-3 minutes of no-load trial operation before feeding raw materials, and start formal feeding only after confirming stable operation without abnormal noise and vibration. Feed materials strictly according to the rated capacity and mortar formula ratio; overloading operation is forbidden. It is prohibited to open the maintenance manhole or observation window during equipment operation. Immediately stop the machine for troubleshooting once abnormal vibration, noise, material accumulation or motor overheating is detected.

Completely clean residual mortar powder and hardened agglomerates inside the mixing chamber after daily shutdown to prevent material caking from affecting subsequent mixing quality and wearing parts service life. Regularly check the wear degree of paddles and lining plates, and replace severely worn components in a timely manner. Periodically lubricate reducers, bearings and transmission parts to ensure flexible and stable transmission. Check and tighten loose connecting bolts regularly. Keep the internal chamber clean and dry during long-term equipment shutdown.

Install the equipment on a flat, solid and horizontal concrete foundation and fix it firmly with anchor bolts to avoid operational shaking and displacement. Ensure the air source pressure of pneumatic components is within the standard working range. Only professionally trained operators are allowed to operate the equipment. Completely cut off the power supply and air supply before all cleaning, maintenance and repair work to ensure construction safety.

It is the core mixing host for medium and large dry mortar production plants, suitable for batch and continuous mixing of raw materials such as quartz sand, cement, fly ash and various chemical admixtures, meeting large-scale standardized production demands.

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

Widely used in mixing and processing of interior and exterior wall putty powder, gypsum mortar, mineral powder materials and other powdery and granular building materials, adapting to multi-formula and multi-variety switching production.

Perfectly matched with automatic batching systems, storage silos, bucket elevators and packaging equipment to form an integrated automatic mortar production line, improving overall production efficiency and automation level of mortar factories.

A1: Under standardized operation and rated feeding capacity, the mixing uniformity can reach more than 98%. It can evenly disperse trace functional additives and short fibers, ensuring stable construction performance and strength of finished mortar products.

A2: The conventional single-batch mixing time is 60 to 120 seconds. The specific time can be adjusted appropriately according to different mortar formulas and material proportions to achieve the optimal mixing effect.

A3: Yes. All paddles and lining plates adopt modular independent design. Severely worn parts can be replaced individually without overall disassembly of the equipment, which effectively saves maintenance time and reduces operating costs.

A4: No. The equipment adopts fully welded closed structure and multi-layer labyrinth shaft end sealing technology, with a reserved dust removal interface. It realizes fully enclosed dust-free mixing, completely meeting environmental protection production standards of modern mortar workshops.

A5: It is suitable for almost all dry mortar products, including ordinary plastering mortar, masonry mortar, waterproof mortar, thermal insulation mortar, anti-crack mortar, putty powder and various special building functional mortars.

A6: Immediately stop feeding and cut off the power supply. After the equipment completely stops running, open the maintenance manhole to clean the blocked and caked materials. Inspect the fastening and wear of paddles, and restart the equipment only after all faults are completely eliminated to avoid motor burnout and equipment structural damage.