DSH-Conical Screw Mixer
Complex Motion by Dual Rotating Screws
Dual rotating screws move in a spiral motion that lifts materials from the bottom of the cone and lets them fall naturally by gravity. The addition of spray atomization and jacket heating or cooling increases its flexibility.
- Input
- Solids, Powders, Granules, Liquids
- Type
- Dry Mixing, Wet Mixing
- Additional Features
- Humidifying, Drying, Cooling
A Conical Screw Mixer for Complex Dual-Screw Motion Blending
SINOTHERMO's conical screw mixer — also known as a conical screw blender or Nauta-type mixer — uses dual rotating screws that move in a spiral path, lifting material from the bottom of the cone and letting it fall back by gravity. Optional spray atomization and jacket heating or cooling extend the unit to both dry and wet mixing of solids, powders, granules and liquids.
- Two screws rotate together in a spiral motion, continuously lifting material from the cone's base and folding it back down by gravity.
- Handles both dry mixing of solids and powders and wet mixing involving liquids, within the same conical vessel.
- An optional spray system introduces liquid as a fine mist during mixing, supporting humidifying or wet-mixing steps.
- An optional jacket allows heating or cooling of the batch during mixing, drying or temperature-sensitive processing.
- The conical shape works with gravity to keep material circulating without dead zones at the vessel walls.
Model
| Model | DSH0.3 | DSH0.5 | DSH1 | DSH2 | DSH4 | DSH6 | DSH10 |
|---|---|---|---|---|---|---|---|
| Total Volume ((m³)) | 0.3 | 0.5 | 1 | 2 | 4 | 6 | 10 |
| Loading Coefficient | 0.4-0.6 | 0.4-0.6 | 0.4-0.6 | 0.4-0.6 | 0.4-0.6 | 0.4-0.6 | 0.4-0.6 |
| Mixed Material Particle Size ((um)) | 40-3000 | 40-3000 | 40-3000 | 40-3000 | 40-3000 | 40-3000 | 40-3000 |
| Working Conditions | Ambient temp, atmospheric pressure, dust-proof seal | Ambient temp, atmospheric pressure, dust-proof seal | Ambient temp, atmospheric pressure, dust-proof seal | Ambient temp, atmospheric pressure, dust-proof seal | Ambient temp, atmospheric pressure, dust-proof seal | Ambient temp, atmospheric pressure, dust-proof seal | Ambient temp, atmospheric pressure, dust-proof seal |
| Output per Batch ((kg)) | 180 | 300 | 600 | 1200 | 2400 | 3600 | 6000 |
| Power ((kw)) | 2.2 | 2.2 | 5.5 | 5.5 | 11 | 20.7 | 30.7 |
| Mixing Time ((min)) | 4-10 (special materials determined by test) | 4-10 (special materials determined by test) | 4-10 (special materials determined by test) | 4-10 (special materials determined by test) | 4-10 (special materials determined by test) | 4-10 (special materials determined by test) | 4-10 (special materials determined by test) |
| Machine Weight ((kg)) | 500 | 1000 | 1200 | 1500 | 2800 | 3500 | 4500 |
Applications
Chemical
Blends chemical powders and liquids with heating or cooling control during mixing.
Pharmaceutical
Combines dry and wet mixing of powder and liquid ingredients in one vessel.
Food Flavors & Fragrances
Blends food powders with liquid additives using spray atomization for even distribution.
Cosmetics
Mixes cosmetic powders and liquids with temperature control via the jacket.
Resins
Blends resin powders and liquid components with heating or cooling as needed.
Services
→Learn more about Services- 1Pre-Sales Testing and Experiment
- 2Professional Customization Design
- 3On-site Installation and Commissioning
- 4Training and Technical Support
- 5Full Life Circle Maintenance and After-sales
Frequently Asked Questions
Is a conical screw mixer the same as a Nauta mixer?
In everyday use, yes. “Nauta” is a brand name tied to this vertical cone-and-screw design, and buyers often use it as shorthand for any conical screw mixer. The DSH is SINOTHERMO's own dual-screw design and is not a product of, or affiliated with, the owner of the Nauta brand. When comparing quotes, compare working volume, screw arrangement, sealing and discharge rather than the name.
What is a conical screw mixer used for?
It blends powders, granules and liquids in one vessel. Typical uses are chemicals, pharmaceutical ingredients, food flavors and fragrances, cosmetic powders and resins. With the optional spray system and jacket, the same unit can also humidify, heat, cool or gently dry a batch while it mixes.
How does a conical screw mixer differ from a ribbon blender?
A ribbon blender mixes in a horizontal trough with a ribbon agitator, while a conical screw mixer stands vertical: the screws lift material from the base of the cone and gravity returns it, which keeps material circulating without dead zones at the walls. A vertical cone also generally needs less floor area for the same volume. Which suits you depends on the material, so we can test your sample before you choose — both types are in our range.
What batch sizes are available?
The DSH series runs from DSH0.3 to DSH10, with total volumes from 0.3 to 10 m³ and output per batch from 180 kg to 6,000 kg at a loading coefficient of 0.4–0.6. Installed power ranges from 2.2 to 30.7 kW, and mixing time is typically 4–10 minutes, with special materials determined by test.
Can it handle wet mixing and granulation?
It handles both dry and wet mixing: the optional spray system adds liquid as a fine mist during mixing, and the jacket allows heating or cooling of the batch. It is a mixer rather than a granulator, so if your goal is forming granules, look at our granulators instead and send us your material so we can recommend the right route.
