twin shaft paddle mixer

The twin shaft paddle mixer is a professional horizontal weightless mixing host independently optimized for full-automatic dry mortar production lines. As the core core mixing equipment of mortar processing systems, it is specially designed for high-uniformity blending of multi-component materials with different specific gravity, particle sizes and proportions, including cement, quartz sand, gypsum powder, polymer additives, cellulose and fiber materials. Adopting twin-shaft counter-rotating paddle circulation mixing principle, the equipment breaks the limitations of traditional single-shaft and ribbon mixers, forms an all-round weightless turbulent mixing zone inside the tank, and realizes rapid, uniform and non-segregation blending of various dry mortar raw materials.

Different from ordinary mixing equipment, this twin shaft paddle mixer features zero dead-angle mixing, fast batch circulation and ultra-high mixing uniformity. It perfectly solves common industry problems such as uneven additive dispersion, material stratification, fiber breakage and residual dead zone materials. With fully enclosed dust-free structure, industrial heavy-duty configuration and intelligent linkage performance, it can steadily support 24-hour continuous mass production, effectively ensuring consistent strength, color and construction performance of finished mortar products, and is the preferred core host for high-standard dry mortar production lines.

Equipped with two synchronous counter-rotating paddle shafts with scientifically staggered angle layout, the mixer forms a 360° circulating weightless flow field inside the mixing chamber. All materials are continuously lifted, flipped, sheared and dropped in three dimensions, realizing full-range mixing without dead corners. Even for trace additives, lightweight fibers and heavy aggregate materials with large density differences, it can achieve uniform dispersion with mixing uniformity up to 99.9%, completely avoiding component segregation and formula deviation.

The mutual convection acceleration effect of dual paddles greatly shortens the mixing cycle. A complete mortar blending process only takes 2–4 minutes per batch, which is 30% more efficient than traditional ribbon mixers. The optimized power matching design reduces invalid power consumption, achieving lower energy consumption per ton of finished mortar. It effectively improves the overall line output while cutting long-term production energy costs, fully adapting to large-scale continuous mortar batch production.

The unique flexible paddle stirring structure avoids violent squeezing and excessive friction of materials. It will not break mortar fibers, crush aggregate particles or refine cement powder, completely retaining the original particle gradation and gelling activity of raw materials. It effectively prevents finished mortar quality defects such as insufficient bonding strength, poor water retention and easy cracking caused by material performance damage, ensuring stable construction quality of each batch of products.

The whole machine adopts fully welded sealed tank body and multi-layer composite shaft-end anti-leakage sealing technology. It supports docking with industrial dust removal systems to realize closed-loop dust-free production. No powder flying or material leakage occurs during high-speed operation, which reduces raw material waste, improves workshop cleanliness, and fully meets modern industrial environmental protection and safety production standards.

Mixing paddles, lining plates and shaft ends are made of high-strength wear-resistant alloy materials, which can resist long-term high-frequency impact and abrasion of mortar raw materials. The reinforced integral frame and heavy-duty transmission system reduce equipment vibration and failure rate. The replaceable vulnerable parts design simplifies daily maintenance, greatly extending equipment service life and reducing enterprise operating costs.

Equipped with PLC intelligent control system and humanized touch screen operation, the mixer can store multiple mortar formulas, support precise timing mixing and automatic pneumatic discharging. It can be seamlessly linked with automatic batching systems, bucket elevators, silo feeding systems and packaging equipment to form a fully unmanned automatic dry mortar production line, realizing intelligent and standardized production management.

• Mixing Principle: Horizontal twin-shaft counter-rotating weightless paddle mixing
• Effective Batch Volume: 100L–12000L (customizable)
• Hourly Production Capacity: 5–60 tons/hour
• Main Motor Power: 7.5kW–90kW
• Mixing Cycle: 2–4 minutes per batch
• Mixing Uniformity: ≥99.9%
• Discharging Mode: Large-opening pneumatic quick full discharge
• Control System: PLC intelligent automatic control + touch screen formula storage
• Tank Body Material: Thickened carbon steel / stainless steel optional
• Wearing Parts: High-chromium wear-resistant alloy paddles & liners
• Sealing Type: Multi-layer anti-leakage shaft sealing
• Working Condition: 24-hour uninterrupted industrial heavy-duty operation

Before equipment startup, fully check the fastening status of twin-shaft paddles, fixing bolts and wear-resistant liners. Inspect the tightness of transmission components and the integrity of shaft-end sealing structure. Confirm no foreign sundries or hardened mortar blocks inside the mixing tank. Test the normal operation of motor, pneumatic discharging system and electrical control system. Strictly prohibit overload startup and static heavy-load operation to avoid motor stalling and mechanical collision damage.

Follow the standard operation sequence: start the mixer first, then feed materials evenly after stable operation. Strictly follow preset formula proportions and mixing time parameters to ensure uniform dispersion of trace additives and fibers. It is forbidden to open the tank cover or touch internal moving components during operation. Stop feeding before shutdown, and keep the equipment running for 1–2 minutes to completely discharge residual materials and prevent internal caking.

Clean residual mortar powder and bonded materials inside the tank after daily production to avoid hardening and affecting subsequent mixing accuracy. Weekly inspect paddle wear, liner abrasion and sealing aging status, replace severely worn vulnerable parts in time. Regularly lubricate transmission bearings and reducer components to ensure flexible and stable operation. Keep the discharging gate clean and unobstructed to guarantee quick and thorough discharging.

The equipment must be reliably grounded during operation to ensure electrical safety. Keep the matched dust removal system running normally during production to maintain dust-free workshop environment. All maintenance, debugging and troubleshooting work must be carried out after complete power cutoff and equipment shutdown. For long-term shutdown, thoroughly clean the tank interior, keep the equipment dry and ventilated to prevent moisture corrosion and material deterioration.

The twin shaft paddle mixer is widely applicable to full-series dry mortar production and multi-type powder blending industries, serving high-precision and high-stability material processing scenarios:

• General Construction Mortar: Mixing of masonry mortar, plastering mortar, bonding mortar and structural filling mortar
• Functional Protection Mortar: Production of waterproof mortar, anti-crack mortar, thermal insulation mortar, repair mortar and fireproof mortar
• Decorative Special Mortar: Blending of tile adhesive, grout, self-leveling mortar, interface agent and colored decorative mortar
• High-Precision Modified Mortar: Mixing of fiber-containing mortar, polymer modified mortar and micro-additive enhanced mortar
• Building Material Powder Processing: Uniform blending of cement, gypsum, mineral powder, fly ash and various building chemical additives

Traditional ribbon mixers have obvious mixing dead zones, long batch cycles and poor adaptability for materials with different densities, easily causing additive segregation and fiber breakage. The twin shaft paddle mixer adopts dual counter-rotating weightless mixing design with zero dead zones, faster mixing speed and higher uniformity. It protects material activity effectively, adapts to all kinds of complex mortar formulas, and supports long-term high-output stable production, which is more suitable for modern high-standard dry mortar production lines.

Unstable mortar quality is mainly caused by insufficient mixing time, worn paddles leading to dead zones, uneven feeding, or residual caking inside the tank. Standardizing mixing parameters, regularly replacing worn parts, and conducting daily thorough cleaning can completely solve uneven dispersion and formula deviation problems.

Yes. The gentle paddle stirring principle ensures uniform dispersion of fibers and polymer additives without breaking or agglomeration. It perfectly meets the production requirements of high-end functional mortars such as anti-crack mortar and self-leveling mortar, maintaining stable physical and construction performance of finished products.

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 and green production, fully complying with environmental protection standards for mortar workshops.

Absolutely. The PLC intelligent control system supports synchronous linkage with automatic batching systems, elevators, silos and packaging machines. It realizes automatic feeding, mixing, discharging and packaging, achieving full-process unmanned intelligent production and improving overall line efficiency.

Clean residual materials daily to prevent hardening; inspect paddle and liner wear weekly; lubricate transmission parts regularly; replace aging seals and worn vulnerable parts quarterly. Scientific and standardized maintenance can eliminate potential faults, stabilize mixing accuracy and greatly prolong the equipment’s industrial service life.