Haifeng Solid Metering Polymer PU Premixing Station 1
Auxiliary
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Solid Filler PU Premixing Station | Filled Polyols

Fully automatic batch premixing of expandable graphite, calcium carbonate, glass fiber, barite and other solid fillers into polyurethane polyol. Conventional high-shear mixers can damage flaky fillers. Design is matched to filler type and loading, shear sensitivity, dust protection, temperature requirements and the raw material TDS.

Separate Solid and Liquid Dosing

Liquid is measured by a volumetric flowmeter; solid filler is dosed through a rotary airlock discharge valve. This applies only to the filler, polyol, temperature and capacity agreed in the technical specification; formulation compatibility follows the technical confirmation.

PLC + HMI Recipe Automation

Store multiple recipes and automatically execute feeding, mixing, discharge and in-tank cleaning. Temperature accuracy is ±2°C; settings follow the raw material TDS and technical agreement.

Gentle Low-Shear Mixing

Variable-speed agitation separates charging/dispersion speed from homogenizing speed, protecting fragile fillers such as expandable graphite and preserving their flame-retardant and acoustic functions.

Sealed Dust-Controlled Feeding

Interfaces accommodate vacuum loaders and bulk-bag feeding through a sealed circuit to prevent powder escape. Configuration is customized to the filler.

Request a Quote Discuss Material Compatibility
Availability on Request 4–6 Week Delivery 1-Year Warranty
HF‑PPS‑2X10‑Gr / HF‑PPS‑2X5‑CC / HF‑PPS‑2X5‑Gf

Solid Filler PU Polyol Premixing Station

Automatic low-shear premixing of graphite, calcium carbonate and glass-fiber fillers into polyurethane polyol.

This automatic batch premixing system incorporates expandable graphite, calcium carbonate, glass fiber, barite and other solid fillers into polyurethane polyol. Conventional high-shear tanks can break fragile flake structures and reduce the associated flame-retardant and acoustic properties. Engineering follows the material TDS, filler loading, shear sensitivity, dust protection and temperature-control requirements.

The specifications are product-family selection references. They do not mean one tank maintains the same mixing quality under every operating condition. Calculate dosing from the formulation and validate it at the actual viscosity, filler bulk density and production rate. Finished-product fire, acoustic and mechanical properties are the combined result of material, process and equipment; small trials are required before production.

Solid Filler PU Polyol Premixing Station

Configured

To Your Production Brief

Commissioning and Production Start-Up

Confirm Filler and Formulation Boundaries

Confirm drawings, hourly capacity, filler grade and loading, target product properties and the TDS. Distinguish graphite, calcium carbonate and glass-fiber operating conditions when selecting equipment.

Prepare Materials and Equipment

Set liquid temperature from the TDS. Inspect feeding, rotary airlock, agitator, filtration, dust collection and safety components.

Calibrate Solid and Liquid Feeding

Weigh-check polyol and filler dosing separately at the actual material, temperature and target throughput; confirm operation within the stable metering range.

Premix, Discharge and Validate

Run a validated recipe and monitor temperature, mixing speed, charge quantities and alarms. Discharge, sample the mixture for dispersion checks and retain complete batch records.

HF‑PPS‑2X10‑Gr / HF‑PPS‑2X5‑CC / HF‑PPS‑2X5‑Gf

Technical Specifications

The values describe optional product-family configuration ranges. Final equipment configuration, capacity, accuracy, power, material compatibility and acceptance methods are defined in the technical agreement.

Request Technical Specifications
Technical ParameterHF‑PPS‑2X10‑Gr / HF‑PPS‑2X5‑CC / HF‑PPS‑2X5‑Gf
ComponentsPolyol with expandable graphite, calcium carbonate, glass fiber, barite and other solid fillers. Special operating conditions beyond the stated shear-sensitive filler applications require advance confirmation.
Output Range (g/s)0.1‑5 t/h; customized for filler type and line cycle
Mixing Ratio RangeDosing and operating settings follow the material formulation and technical agreement.
Ratio AccuracyLiquid volumetric flowmeter; solid filler rotary airlock dosing. Actual dosing accuracy is determined by on-site calibration.
Tank Capacity (L)500L /1000L; single or twin tanks selected from daily consumption and changeover interval
Series ModelsHF‑PPS‑2X10‑Gr / HF‑PPS‑2X5‑CC / HF‑PPS‑2X5‑Gf
Processing Capacity0.1‑5 t/h; customized for filler type and line cycle
Solid Feeding Output30‑40 kg/min; depends on filler bulk density and machine configuration
Tank Volume500L /1000L; single or twin tanks selected from daily consumption and changeover interval
Temperature Accuracy±2°C; set within the polyol processing window
Metering MethodLiquid volumetric flowmeter; solid filler rotary airlock dosing. Actual dosing accuracy is determined by on-site calibration.
Mixing SystemVariable-speed low-shear agitation; higher-speed dispersion during feeding and lower-speed homogenization to protect fragile fillers
Feeding InterfacesVacuum loader and bulk-bag feeding station connections for sealed dust-controlled feeding
Operating ModeAutomatic batch production; reverse agitation supports in-tank self-cleaning
Flow MeasurementWear-resistant flowmeter suitable for abrasive filled materials
Installed Power15‑25 kVA; determined by the actual agitator, heating and feeding auxiliary electrical list
Control SystemPLC + HMI touchscreen; multiple recipes, process recording and exportable alarm logs
Compatible MaterialsPolyol with expandable graphite, calcium carbonate, glass fiber, barite and other solid fillers. Special operating conditions beyond the stated shear-sensitive filler applications require advance confirmation.
WarrantyStandard 12 months; commencement date, coverage, wear parts and service boundaries are defined in the contract.
Compliance and DocumentationCE and accompanying documents are supplied according to the sales region, final configuration and contract. ISO9001 is a company management-system certificate, not certification of an individual machine.
Why Choose Haifeng

Core Equipment Capabilities

Engineering for production efficiency, material consistency and operating conditions.

Protective Low-Shear Agitation

Variable-speed feeding dispersion and homogenization avoid breaking fragile graphite flakes and preserve flame-retardant and acoustic functions.

Longer Premix Storage Life

Uniform gentle agitation slows aging of the polyol-filler mixture, extends usable premix life and reduces changeover waste.

Automatic Batch Production

The automated sequence supplies day tanks, shortens production cycles and improves overall line OEE.

Sealed Dust-Controlled Workplace

Closed feeding circuits connect vacuum loaders or bulk-bag stations, prevent powder escape and support a clean workshop.

Repeatable Recipe Control

HMI recipes store feeding quantity, temperature and speed for consistent batches.

Flexible Feeding and Optional Abrasion-Resistant Measurement

Multiple feeding interfaces and optional wear-resistant flowmeters suit abrasive filled-polyol materials.

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Technical Support

Frequently Asked Questions

What should be checked if expandable graphite loses flame-retardant performance after mixing?
Check mixing speed for excessive shear and broken graphite flakes, verify actual filler loading and examine whether stored premix has aged. Complete a small production trial before release. After corrective action, run small trials and recheck mixture dispersion and the relevant finished-product properties. The equipment provides controlled dosing and mixing records; final performance also depends on raw material quality and downstream foaming and requires joint validation. The equipment controls low-shear mixing; raw materials and downstream processes still affect fire performance.
How can temperature fluctuations be prevented from causing batch differences?
Confirm temperature-control operation and maintain the polyol processing temperature. Recalibrate solid and liquid feeding under actual site conditions rather than copying laboratory settings. After corrective action, run small trials and recheck mixture dispersion and the relevant finished-product properties. The equipment provides controlled dosing and mixing records; final performance also depends on raw material quality and downstream foaming and requires joint validation.
How should excessive dust escaping from the feeding station be handled?
Confirm temperature-control operation and maintain the polyol processing temperature. Recalibrate solid and liquid feeding under actual site conditions rather than copying laboratory settings. After corrective action, run small trials and recheck mixture dispersion and the relevant finished-product properties. The equipment provides controlled dosing and mixing records; final performance also depends on raw material quality and downstream foaming and requires joint validation.
How can persistent product-density variation be traced to solid/liquid dosing?
Check the production recipe and separately weigh-check filler and polyol under actual temperature and capacity conditions. Inspect rotary airlock wear and filter blockage. Calculate dosing from the formulation; actual dosing accuracy follows on-site calibration. After corrective action, run small trials and recheck mixture dispersion and the relevant finished-product properties. The equipment provides controlled dosing and mixing records; final performance also depends on raw material quality and downstream foaming and requires joint validation.
What happens if the premixing station is oversized for the actual throughput?
The reference processing range is 0.1‑5 t/h. Prolonged operation far below rated capacity can reduce solid-feeding stability and mixing effectiveness. Match normal line flow and verify dosing with real materials. This system is intended for graphite, calcium carbonate and glass-fiber filler/polyol premixing; special fillers require prior process confirmation. After corrective action, run small trials and recheck mixture dispersion and the relevant finished-product properties. The equipment provides controlled dosing and mixing records; final performance also depends on raw material quality and downstream foaming and requires joint validation.