Chemical processing
Chemical powders, intermediates and multicomponent formulations.
Industrial Mixers
Conical Screw Batch Mixer
A gentle, energy-efficient batch mixer in which the screw rotates on its own axis while revolving around the centerline of the conical vessel, producing lift, shear, convection and diffusion with low product degradation and minimal discharge residue. Designed and manufactured for chemical processing and dyes and pigments. Review the working principle, performance features and available configuration details below when specifying your industrial project.
- Compound screw self-rotation and planetary revolution generate lift, shear, convection and diffusion.
- Gentle, low-energy mixing protects granules and heat-sensitive formulations while minimizing residual hold-up.
- Available configurations cover 0.06–30 m³ with heating, cooling, liquid spraying, pressure/vacuum, CIP and pull-out options.
- Reference series
- DSH
- Series total-volume range
- 0.06–30 m³
- Loading coefficient
- 0.4–0.6
- Mixing motion
- Rotation + revolution
Product Essentials
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Product Overview
Conical Screw Batch Mixer
The mixer uses a single long screw, an asymmetric twin-screw arrangement or a three-screw arrangement inside a conical vessel, depending on equipment size. The screw rotates about its own axis while revolving around the vessel centerline, continuously lifting and circulating the batch.
This compound motion generates shear, convection and diffusion for uniform blending with low energy demand, limited particle degradation and minimal residual hold-up. It is well suited to powder + powder, granule + powder and powder + a small liquid addition, including coarse, fine, fibrous and flake-like materials.
Typical applications include chemicals, dyes, pigments, agrochemicals, veterinary products, pharmaceuticals, plastics and additives. Heating, cooling, liquid spraying, pressure/vacuum, CIP and pull-out versions are available.
Rotation + RevolutionLow EnergyLow BreakageLow ResidueHeat-Sensitive FeedOptional CIP
Typical Technical Data
Technical specifications
Listed values apply to the identified configuration. Confirm material conditions, utilities and optional equipment before selection.
| Parameter | Reference value |
|---|---|
| Equipment type | Conical screw batch mixer |
| Series total-volume range | 0.06–30 m³ |
| Loading coefficient | 0.4–0.6 |
| Series motor-power range | 1.5–45 kW |
| Available screw arrangements | Single screw / twin screw / three screws |
| Twin-screw arrangement | One long screw and one short asymmetric screw, subject to mixer size |
| Suitable feed combinations | Powder + powder / granule + powder / powder + a small amount of liquid |
| Heating or cooling media | Industrial water for cooling / steam or thermal oil for heating |
| Feeding methods | Manual charging / vacuum conveying / conveyor feeding |
| Standard outlet concept | Close-fitting lobed offset valve; manual or pneumatic actuation |
| Optional process functions | Liquid spraying / heating / cooling / positive pressure / vacuum / CIP / pull-out construction |
Final equipment dimensions, utilities and performance must be confirmed before quotation.
Technical Specifications
Available Sizes
Seventeen models from 0.06 to 30 m³ are listed for preliminary comparison. Final dimensions, power and weight remain subject to material properties and engineered options.
| Reference Model | Total Volume (m³) | Loading Coefficient | Motor Power (kW) | Maximum Diameter × Height (mm) | Weight (kg) |
|---|---|---|---|---|---|
| DSH-0.06 | 0.06 | 0.4–0.6 | 1.5 | Φ630 × 1451 | 150 |
| DSH-0.1 | 0.1 | 0.4–0.6 | 1.5 | Φ715 × 1569 | 250 |
| DSH-0.3 | 0.3 | 0.4–0.6 | 2.2 | Φ920 × 1960 | 550 |
| DSH-0.5 | 0.5 | 0.4–0.6 | 3 | Φ1140 × 2320 | 600 |
| DSH-1 | 1 | 0.4–0.6 | 4 | Φ1480 × 2895 | 1200 |
| DSH-1.5 | 1.5 | 0.4–0.6 | 5.5 | Φ1633 × 3210 | 1350 |
| DSH-2 | 2 | 0.4–0.6 | 5.5 | Φ1816 × 3495 | 1500 |
| DSH-3 | 3 | 0.4–0.6 | 7.5 | Φ2040 × 3760 | 2300 |
| DSH-4 | 4 | 0.4–0.6 | 11 | Φ2250 × 4425 | 2520 |
| DSH-6 | 6 | 0.4–0.6 | 15 | Φ2548 × 4940 | 3000 |
| DSH-8 | 8 | 0.4–0.6 | 18.5 | Φ2780 × 5360 | 4500 |
| DSH-10 | 10 | 0.4–0.6 | 22 | Φ3018 × 5815 | 5500 |
| DSH-12 | 12 | 0.4–0.6 | 22 | Φ3204 × 6100 | 5900 |
| DSH-15 | 15 | 0.4–0.6 | 30 | Φ3442 × 6540 | 6600 |
| DSH-20 | 20 | 0.4–0.6 | 37 | Φ3805 × 7420 | 9800 |
| DSH-25 | 25 | 0.4–0.6 | 37 | Φ4086 × 7800 | 10200 |
| DSH-30 | 30 | 0.4–0.6 | 45 | Φ4330 × 8200 | 11500 |
The loading coefficient, motor power, dimensions and weight are reference values. Confirm the final design after material review and process-option selection.
Applications
Conical Screw Batch Mixer: industrial applications
Applications include chemical processing and dyes and pigments. Confirm material properties and process conditions before selecting the equipment configuration.
Dyes and pigments
Coarse/fine blends and colorant formulations requiring gentle, uniform distribution.
Agrochemicals
Pesticide powders and related formulated products.
Veterinary products
Veterinary pharmaceutical powders and premixes.
Pharmaceutical production
Pharmaceutical powders, intermediates and heat-sensitive formulations.
Plastics and additives
Polymer additives, processing aids and related powder or granule blends.
Working Principle
From feed preparation to finished product.
The process route is selected around the material and product targets.
Material charging
Powder, granules or powder with a small liquid addition is introduced manually, by vacuum conveying or by mechanical conveyor.
Screw self-rotation
The screw rotates about its own axis and conveys product upward along the flight.
Planetary revolution
At the same time, the screw revolves around the central axis of the conical vessel and sweeps a broad mixing path.
Material lifting and circulation
The combined motion repeatedly lifts, folds and recirculates the batch from the lower cone through the working volume.
Shear, convection and diffusion
Overlapping flow patterns distribute coarse and fine fractions, major ingredients and low-dose components throughout the batch.
Low-residue discharge
After the required uniformity is reached, the cone directs the product to the selected close-fitting bottom outlet.
Performance Highlights
Process performance shaped around the product.
Final performance remains dependent on feed properties and engineering confirmation.
Compound rotation and revolution
Screw self-rotation and planetary revolution combine to create multi-directional circulation throughout the cone.
Broad feed compatibility
Suitable combinations include powder + powder, granule + powder and powder + a small amount of liquid.
Low energy demand
Efficient lifting and circulation provide uniform blending at relatively low operating power.
Gentle product handling
The low-impact mixing action helps preserve granular integrity and limits unnecessary particle breakage.
Adaptability to complex formulations
The mixer accommodates coarse/fine blends, multicomponent formulations, large component-ratio differences and heat-sensitive materials.
Limited temperature rise
Gentle circulation reduces frictional heating and helps protect heat-sensitive products from local overheating.
Low residual hold-up
The conical geometry and close-fitting outlet arrangement help reduce retained material after discharge.
Multiple process versions
Heating, cooling, positive-pressure and vacuum designs can be engineered for project-specific duties.
Optional automated cleaning
CIP circulation and internal spraying can clean the vessel without routine manual dismantling.
System Configuration
Configuration and optional functions
Select options for the material and process. Availability and final scope are confirmed in the equipment specification.
Conical vessel
The smooth cone promotes complete circulation and directs the finished product toward a low-residue bottom outlet.
Single-screw arrangement
A long planetary screw provides gentle lifting and circulation for the selected vessel size.
Twin-screw arrangement
One long and one short asymmetric screw form the twin-screw arrangement. A three-screw option uses two short screws and one long screw in a symmetric layout, depending on equipment size.
Planetary drive
The drive produces simultaneous screw self-rotation and revolution around the vessel centerline.
Liquid-addition system
A central spray pipe and atomizing nozzles distribute small liquid additions. Compatible construction materials can be selected for acidic or alkaline liquids.
Positive-pressure or vacuum construction
A suitable head design and increased vessel-wall thickness provide the required pressure resistance while maintaining cleanability.
Flexible feeding systems
Manual charging, vacuum conveying and mechanical conveyor feeding can be integrated according to the plant layout.
Close-fitting standard outlet
A lobed, offset valve fits closely around the bottom of the long screw to minimize unmixed pockets; manual and pneumatic drives are available.
Alternative discharge options
Butterfly valves, ball valves, rotary airlocks and side-discharge arrangements can be supplied for downstream-process compatibility.
CIP cleaning option
Internal spray cleaning can be specified, with cleaning media and drainage matched to the material and process.
Jacket option
A jacket can provide water cooling or steam/thermal-oil heating.
Separable top-cover option
The top cover separates from the conical vessel to expose the screws and inner walls for cleaning and component maintenance.
Structure & Options
Mixing elements and configurable process functions
Images below illustrate the corresponding mechanical details and available configurations.
Selection Support
What we need to confirm the final design.
Share the following formulation, batch and process information for an efficient preliminary review.
Material names and formulationBulk density and particle-size distributionParticle fragility and heat sensitivityMinor-component ratioRequired batch volume and working loadTarget mixing uniformity and cycle timeLiquid-addition quantity and chemistryHeating or cooling dutyPositive-pressure or vacuum requirementFeeding methodDischarge valve and downstream interfaceContact-part materialsCIP and pull-out cleaning requirements
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