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Polymer Premixing Station – Solid metering
Premixing Station
[Introduction] Premixing stations operate fully automatically to process PUR components with filler materials, such as glass fibers, barytes, expandable graphite or melamine. The filler materials are fed in the desired concentration from...
Key Features
- Precision process control
- Stable industrial production
- Flexible configuration options
- Full-cycle technical support
- [Introduction] Premixing stations operate fully automatically to process PUR components with filler materials, such as glass fibers, barytes, expandable graphite or melamine. The filler materials are fed in the desired concentration from containers, into the premixing tank, where they are mixed with the PUR component.
- [Capacity] 0.1-5 t/h
- [Improvement] Haifeng can customize the polymer premixing station according to the actual working conditions and customer requirements.
ADVANTAGES
- Preservation of Material Properties – The system ensures the expandable graphite is mixed very gently into the polyol. This “shear-preventing” process prevents the destruction of sensitive flakes, thereby maintaining the critical flame-retardant and acoustic absorption properties of the final component
- Cost-Effectiveness and Reduced Waste – Uniform agitation delays the aging process of the polyol/graphite mixture. This extends the service life of the premixture, prevents additional costs associated with material changes, and significantly reduces material waste
- High Process Efficiency – The station offers a fully automated process chain that fills day tanks automatically. This results in short cycle times and high overall equipment efficiency (OEE) for the production line
- Clean Production Environment – The machine is designed to ensure “dust-free filling,” which maintains a clean workspace and protects the production environment from contamination
- Consistent Product Quality – Precise process control allows for the production of a higher volume of premium-quality parts from a single batch without interruptions for cleaning or material changes
PRODUCT STRUCTURE
The Haifeng premixing station system operates on a fully automated, batch-based principle designed to handle shear-sensitive materials gently:
1. Liquid Dosing: The heated mixing tank is filled with the liquid component (polyol). The volume is precisely controlled by the volumetric flowmeter.
2. Solid Metering: Simultaneously or sequentially, the bucket wheel airlock rotates to feed the exact amount of solid filler from the hopper into the tank, following the programmed recipe.
3. Gentle Mixing: The wall-mounted agitator distributes the graphite in the polyol. Unlike standard mixers, it is programmed for specific speeds: higher speeds during filling for dispersion and lower speeds for homogenization. This ensures the fragile graphite flakes are not shattered by shear forces, preserving their flame-retardant properties.
4. Discharge & Cleaning: Once mixed, the feed pump transports the material to the production line. The system can also execute a fast counter-rotation of the agitator to clean the tank automatically.
PRODUCT PARAMETERS
|
Model |
Size |
Number of tanks |
Volume of tanks (L) |
Power(kVA) |
Feeding output(kg/min) |
Temperature Control(℃) |
Application |
|
HF-PPS-2X10-Gr |
2600 x 1900 x 3600 mm |
1 |
1000 |
23 |
40 |
±2 |
Graphite |
|
HF-PPS-2X5-CC |
3600 x 2000 x 3600 mm |
2 |
500 |
15 |
30 |
±2 |
Calcium Carbonate |
|
HF-PPS-2X5-Gf |
3600 x 2000 x 3600 mm |
2 |
500 |
25 |
40 |
±2 |
Glass fibers |
Technical Highlights
Shear-Preventing Agitation System
The unit is engineered with specific agitation technology (including frequency drives for fine-tuning) that ensures homogeneous mixing under minimum shearing load to protect shear-sensitive materials
Advanced Touch Panel Control
The system features a touch panel that allows for the precise programming of recipes and process parameters, ensuring high reproducibility and ease of operation
Flexible Feeding Interfaces
It is equipped with interfaces designed for pouring expandable graphite into the hopper, such as connections for a vacuum conveyor or a flexible intermediate bulk container station
Robust Flow Measurement (Optional)
For complex applications, the station can be equipped with a particularly robust flowmeter capable of accurately measuring filled liquids, such as when using premixed polyol with additional solid fillers
PRODUCT PARAMETERS
Application details are configured according to the material, product, and production process.
Technical Highlights
Shear-Preventing Agitation System
The unit is engineered with specific agitation technology (including frequency drives for fine-tuning) that ensures homogeneous mixing under minimum shearing load to protect shear-sensitive materials
Advanced Touch Panel Control
The system features a touch panel that allows for the precise programming of recipes and process parameters, ensuring high reproducibility and ease of operation
Flexible Feeding Interfaces
It is equipped with interfaces designed for pouring expandable graphite into the hopper, such as connections for a vacuum conveyor or a flexible intermediate bulk container station
Robust Flow Measurement (Optional)
For complex applications, the station can be equipped with a particularly robust flowmeter capable of accurately measuring filled liquids, such as when using premixed polyol with additional solid fillers
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