Achieve CV ≤ 5% mixing uniformity in just 60–120 seconds – our Single Shaft Paddle Mixerdelivers fast, homogeneous blending of dry powders and granulates regardless of bulk density or particle shape, with optional liquid addition capabilities for feed, food, chemical, and pharmaceutical processing.
A Single Shaft Paddle Mixer (also known as a horizontal paddle blender or single‑shaft batch mixer) is a high‑performance industrial mixing machine that uses adjustable paddles mounted on a single horizontal rotating shaft to achieve uniform mixing of bulk solid materials. The paddles create a convective mixing action that forces materials to move in a fluidized, three‑dimensional motion, ensuring even distribution of all components — including trace additives at ratios as low as 1:100,000.
Unlike twin‑shaft designs, the single‑shaft configuration offers a simpler, more cost‑effective structure while delivering mixing performance that closely approaches twin‑shaft models. The ratio of paddle diameter to mixing chamber length is approximately 1:1 — if the diameter is too small relative to the length, mixing uniformity and time are significantly affected.
This mixer is widely used across multiple industries:
| Parameter | Value |
| Mixing accuracy | 1:100,000 / CV 3–7% (CV ≤ 5% typical) |
| Mixing time | 60–120 seconds per batch |
| Discharge time | 10–20 seconds (full‑length pneumatic doors) |
| Batch capacity range | 100–15,000 kg (0.2–15 m³ effective volume) |
| Power range | 2.2–132 kW |
| Mixing uniformity | CV ≤ 5% (CV ≤ 3% on premium models) |
| Liquid addition capacity | Up to 5–20% of batch weight |
| Batch throughput | Up to 20 batches/hour |
Specifications vary by model and customization level
The operating principle is simple yet highly effective:
Materials are fed into the horizontal mixing trough through top inlet ports. The top cover can be designed with multiple openings for feed, ventilation, dust collection, and cleaning access — including fully open covers for easy sanitation.
The single shaft rotates, with paddles set at optimal angles to create a convective, fluidized mixing motion. The paddle design divides the housing into smaller zones, each served by at least two paddles. All particles are in constant motion, with dynamic transactions between zones. Voids are mechanically created, and particles are directed to randomly fill these voids — achieving high mixing accuracy and speed.
Atomization spray heads can add liquid ingredients (oils, binders, water, or other liquids) during the mixing cycle for even distribution. Some models support liquid addition up to 20% of batch weight.
Pneumatically operated full‑length bomb doors open along the entire trough length, discharging the complete batch in 10–20 seconds with minimal residue. This quick, clean discharge ensures high batch accuracy and reduces cross‑contamination risk between batches.
The adjustable paddle design creates a three‑dimensional mixing action that thoroughly blends materials of varying particle sizes, densities, and flow characteristics. Whether you're mixing major components or trace additives, achieve consistent homogeneity batch after batch with CV as low as 3% on premium configurations.
With mixing times of just 60–120 seconds and discharge completed in 10–20 seconds, the mixer can process up to 20 fully automated batches per hour — double the efficiency of conventional mixers. This translates to higher production throughput with the same floor space.
Full‑length pneumatic bomb doors run the entire length of the mixing trough, emptying the batch completely in seconds with minimal residue. This design ensures high batch accuracy and reduces cross‑contamination risk between batches.
The efficient paddle design and optimized drive system deliver high mixing performance with lower energy costs compared to alternative mixing technologies. The single‑shaft configuration is inherently more economical than twin‑shaft designs while delivering comparable performance.
Built with durable materials including carbon steel, stainless steel (SUS304, SUS316L), and composite materials, the mixer features a hygienic design that meets food‑grade and pharmaceutical standards. The round body design eliminates dead corners and material buildup. Easy‑access cleaning doors and fully openable top covers simplify maintenance and changeovers.
Advanced models feature large‑section air return ducts to minimize dust generation and prevent material segregation during the mixing process — critical for maintaining product quality in precision blending applications.
Silicone‑sealed discharge doors and specially designed packing seals at shaft ends ensure no leakage during operation — maintaining product integrity and plant cleanliness.
Paddles are easily replaceable and adjustable. Routine checks of paddles, seals, and pneumatic components, combined with proper lubrication and scheduled inspections, ensure long‑term reliable operation with minimal downtime.
Access doors equipped with travel switches ensure operator safety by automatically stopping the machine when opened during operation.
| Industry | Typical Materials Mixed | Key Requirements |
| Animal Feed | Grain powders, mash, premixes, additives, concentrated manure | High uniformity, liquid addition |
| Food Processing | Flour, spices, seasoning blends, powdered ingredients | Hygienic design, stainless steel |
| Chemicals | Pigments, catalysts, powders, granulated compounds | Wear resistance, corrosion protection |
| Pharmaceuticals | Tablet granulation, powder blends, excipients | GMP compliance, easy cleaning |
| Plastics | Resin compounds, additives, masterbatches | Heating/cooling jackets |
| Construction | Mortar, cement, dry mix, colored powders | High capacity, wear‑resistant coatings |
| Organic Fertilizer | Compost, manure, compound fertilizer | Heavy‑duty construction |
Also suitable for aquaculture, ceramics, and refractory materials
We offer tailored solutions to meet your specific production requirements:
Discharge valves available in manual, pneumatic, and electric drive types, including powder ball valves, cylinder valves, plum blossom dislocation valves, butterfly valves, and rotary valves.
| Model | Effective Volume (m³) | Batch Capacity (kg) | Power (kW) | Mixing Time (s) | CV |
| SDHJ0.2 | 0.2 | 100 | 2.2 | 30–120 | ≤5% |
| SDHJ0.5 | 0.5 | 250 | 7.5–11 | 60–90 | ≤5% |
| SDHJ1.0 | 1.0 | 500 | 11–15 | 60–90 | ≤5% |
| SDHJ2.0 | 2.0 | 1000 | 18.5–22 | 60–90 | ≤5% |
| SDHJ3.0 | 3.0 | 1500 | 30 | 60–90 | ≤5% |
| SDHJ4.0 | 4.0 | 2000 | 37–45 | 60–90 | ≤5% |
| SDHJ6.0 | 6.0 | 3000 | 37–55 | 60–90 | ≤5% |
| SDHJ8.0 | 8.0 | 4000 | 45–55 | 60–90 | ≤5% |
| SDHJ10 | 10.0 | 5000 | 55–75 | 60–90 | ≤5% |
| SDHJ12 | 12.0 | 6000 | 75–90 | 60–90 | ≤5% |
| SDHJ15 | 15.0 | 7500 | 90–110 | 60–90 | ≤5% |
Additional capacities up to 20,000L available upon request
Q: How accurate is the mixing?
A: Our Single Shaft Paddle Mixer achieves mixing accuracy of 1:100,000 with a coefficient of variation (CV) of 3–7% (≤5% typical), ensuring uniform distribution of even the smallest additive quantities. Premium configurations can achieve CV as low as 3%.
Q: What materials can be mixed?
A: The mixer handles powders and granulates of any bulk density, particle shape, or size — from fine powders to larger granules. Liquids can also be added during the cycle (up to 5–20% of batch weight depending on model).
Q: How long does a mixing cycle take?
A: A complete batch cycle typically takes 2–3 minutes, with mixing time around 60–120 seconds and discharge completed in 10–20 seconds. High‑performance models can process up to 20 batches per hour.
Q: How does the single‑shaft design compare to twin‑shaft?
A: Single‑shaft paddle mixers offer simpler, more economical manufacturing and operation while delivering mixing uniformity and speed that closely approaches twin‑shaft models. There is no risk of paddle collision as can occur with twin‑shaft designs.
Q: How often does the mixer need maintenance?
A: Routine checks of paddles, seals, and pneumatic components are recommended. With proper lubrication and scheduled inspections, the mixer provides long‑term reliable operation with minimal downtime. The replaceable and adjustable paddle design simplifies maintenance.
Q: Is the machine easy to clean?
A: Yes. The full‑length discharge doors, optional fully‑open barrel cover, extra‑large cleaning access doors, and round body design (no dead corners) make the mixer easy to clean and maintain, reducing changeover time between different products.
Q: Can you customize the machine for my specific application?
A: Absolutely. We offer extensive customization including material of construction (carbon steel, stainless steel SUS304/SUS316L), capacity (100–15,000L), power, coatings (Rilsan, anti‑wear), ATEX components, heating/cooling jackets, liquid addition systems, and specialized paddles (scraper, saw‑toothed, wear‑proof).
Q: What after‑sales support do you provide?
A: We provide installation guidance, commissioning support, operator training, spare parts supply, technical consultation, and free design adjustments during operation if layout modifications are needed.
Address:China,Yanjin county forest park gate to the west 1000 meters north road.
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