single shaft paddle mixer

The single shaft paddle mixer is a compact high-efficiency horizontal mixing host specially optimized for medium and small-scale automatic dry mortar production lines. Adopting mature single-shaft rotary paddle convection mixing principle, this industrial-grade mixing equipment is dedicated to the homogeneous blending of powdery, granular and trace additive materials such as cement, quartz sand, gypsum powder, polymer powder and cellulose used in conventional dry mortar formulas. Different from complex twin-shaft mixing equipment, it features simplified industrial structure, mild low-shear mixing mode and ultra-high cost performance, perfectly matching the batch production rhythm of standard ordinary mortar products.

Equipped with scientifically arranged angle paddles and full-trough circulating mixing design, the equipment forms a stable three-dimensional fluidized convection field inside the mixing chamber. It realizes rapid flipping, lifting and uniform blending of mortar raw materials, effectively solving common problems of traditional ribbon mixers such as long mixing cycle, dead-angle residue and fiber breakage. With fully enclosed dust-proof structure, fast pneumatic discharging and low-energy stable operation, it is the core preferred mixing equipment for standardized production of ordinary construction mortar, decorative mortar and conventional building powder materials, widely applicable to new mortar workshops and old production line renovation projects.

The unique single-shaft paddle circulating mixing mode delivers gentle convection stirring without violent extrusion and high-strength shearing. It effectively protects lightweight cellulose fibers, polymer additives and fine powder components from crushing and denaturation, completely retaining the original physical activity and chemical properties of mortar raw materials. Compared with high-shear mixers, it avoids mortar performance defects such as reduced water retention, weakened bonding strength and easy cracking, ensuring stable construction quality of finished mortar.

The staggered angle layout of industrial paddles covers the entire mixing trough without blind zones. Materials form continuous axial and radial circulating convection under paddle rotation, realizing full-range flipping and blending. The mixing uniformity reaches up to 99.8%, and a complete batch mixing cycle only takes 60–180 seconds, which greatly improves production efficiency. It thoroughly eliminates formula deviation and color difference caused by uneven mixing of trace additives, ensuring consistent quality of each mortar batch.

Simplified single-shaft transmission structure reduces redundant mechanical components, featuring small floor area, lightweight body and flexible installation. It does not require complex foundation construction, greatly saving workshop space and civil engineering investment for mortar enterprises. The integrated modular design supports rapid assembly and commissioning, shortening the production line put-into-use cycle, and is extremely suitable for small and medium-sized mortar factory layout and capacity expansion.

The whole machine adopts fully welded closed tank body and multi-layer shaft-end anti-leakage sealing structure. The entire feeding, mixing and discharging process is completed in a closed cavity, realizing zero floating dust and zero fine powder overflow. It reduces raw material waste, improves workshop cleanliness, and fully complies with modern industrial environmental protection and safety production standards, achieving clean and green dry mortar processing.

With fewer transmission parts and simplified mechanical structure, the equipment has extremely low failure rate and stable long-term operation. The paddles and inner lining are made of high-strength wear-resistant materials, resisting long-term friction and impact of mortar aggregates and powder. Vulnerable parts are few and easy to replace, with low daily maintenance difficulty and low comprehensive operating cost, creating higher economic benefits for continuous mortar production.

The mixer supports seamless linkage with automatic batching systems, bucket elevators, storage silos and packaging machines. Equipped with PLC intelligent control system and humanized touch screen interface, it can store multiple mortar formulas, realize timed mixing, quantitative feeding and automatic pneumatic discharging. It adapts to both manual auxiliary operation and fully automatic unmanned production lines, with strong scene adaptability.

• Mixing Principle: Horizontal single-shaft paddle convection fluidized mixing
• Effective Batch Volume: 50L–8000L (customizable)
• Hourly Production Capacity: 3–40 tons/hour
• Main Motor Power: 4kW–55kW
• Mixing Cycle: 60–180 seconds per batch
• Mixing Uniformity: ≥99.8%
• Discharging Mode: Full-trough pneumatic quick discharge
• Control System: PLC intelligent control + multi-formula storage
• Tank Body Material: Thickened anti-rust carbon steel / stainless steel optional
• Wearing Parts: High-strength wear-resistant alloy paddles and liners
• Sealing Structure: Multi-layer composite anti-leakage shaft sealing
• Operation Mode: Automatic linkage / manual independent operation
• Working Condition: 24-hour continuous stable industrial operation

Before equipment startup, inspect the fastening of paddle blades and fixing bolts, the tightness of transmission components and the integrity of the tank sealing structure. Check the normal operation of the driving motor, pneumatic discharging valve and electrical control system. Confirm no foreign sundries or hardened mortar blocks inside the mixing trough. Strictly prohibit overload startup and no-load long-time high-speed operation to avoid mechanical wear and motor overload damage.

Follow the standard operation sequence of starting the machine first and feeding materials after stable rotation. Feed raw materials evenly according to the preset mortar formula to avoid excessive instantaneous feeding causing material accumulation and incomplete mixing. It is forbidden to open the tank cover or touch internal operating components during equipment operation. Before shutdown, stop feeding first and keep the equipment running for 1–2 minutes to completely discharge residual materials and prevent internal caking and residue accumulation.

Clean residual powder and bonded mortar materials inside the trough after daily production to avoid long-term hardening affecting subsequent mixing accuracy. Weekly check the wear degree of paddles and liners, and replace severely worn vulnerable parts in time. Regularly lubricate transmission bearings and reducers to ensure flexible and stable operation. Inspect shaft-end sealing components regularly to prevent dust leakage caused by aging and failure.

The equipment must be reliably grounded during operation to ensure electrical safety. Keep the matched dust removal system running normally to maintain dust-free workshop production. All maintenance, debugging and fault handling work must be carried out after complete power cutoff and equipment shutdown. For long-term shutdown, thoroughly clean internal residual materials, keep the equipment dry and ventilated, and do a good job of anti-rust protection.

The single shaft paddle mixer features compact structure, low energy consumption and stable mixing performance, widely used in medium and small-scale dry mortar production and conventional building material powder processing:

• Ordinary Construction Mortar Production: Batch mixing of masonry mortar, plastering mortar, bonding mortar and filling mortar for civil construction projects
• Conventional Decorative Mortar: Blending of common putty powder, ordinary tile adhesive and interface mortar for interior and exterior wall decoration
• General Functional Mortar: Production of ordinary anti-crack mortar, thermal insulation mortar and basic waterproof mortar for conventional building projects
• Building Powder Processing: Uniform mixing of cement, gypsum powder, fly ash and conventional building chemical additives
• Small & Medium Factory Production: Core mixing equipment for small mortar production lines, workshop capacity expansion and old equipment renovation

The single shaft paddle mixer adopts simplified single-shaft low-shear structure, with lower investment cost, smaller floor area and lower energy consumption, more suitable for conventional ordinary dry mortar production. The twin-shaft model is designed for high-precision, high-output and complex formula mortar with higher configuration and larger capacity. For standard ordinary mortar production, the single-shaft model achieves higher cost performance and more stable operation with simpler maintenance.

Uneven mixing is mainly caused by insufficient mixing time, unstable feeding speed, worn paddles leading to mixing dead zones, or residual hardened materials in the trough. It can be solved by standardizing mixing parameters, stabilizing feeding volume, replacing worn paddles and cleaning internal residues regularly to ensure full and uniform material blending.

Yes. The mild low-shear mixing principle can uniformly disperse conventional fibers and polymer additives without breaking or agglomeration. It fully meets the production requirements of ordinary anti-crack mortar, thermal insulation mortar and other modified mortar products, ensuring stable finished product performance.

No. The fully sealed welded tank body and multi-layer shaft-end sealing structure effectively block fine powder leakage. Matched with professional dust removal equipment, it realizes zero dust flying in the mixing process, meeting environmental protection standards for modern mortar workshops.

Absolutely. The simplified industrial-grade structure has few failure points and stable operating performance, supporting 24-hour uninterrupted batch production. With low maintenance frequency and low energy consumption, it is very suitable for long-term and stable mass production of conventional dry mortar products.

The equipment has a simple mechanical structure with fewer vulnerable parts. Daily maintenance only requires cleaning residual materials, checking bolt tightness and lubricating transmission parts. The maintenance process is simple and efficient without complex professional operation, greatly reducing enterprise operation and maintenance costs.