Low-Pressure PU Foaming Machine | OTR Solid Tires
Compact PU system for OTR solid tires, with IBC direct feed, plunger metering (±0.3%), static mixing, pressure safety control, and complete air treatment system.
Discharge Flow Rate
300～1000 L/h
Mix Ratio (A:B)
100 : 100
Metering Accuracy
±0.3%
Working Pressure
0～2 MPa
Product Overview
The HF‑LPM‑1A1B‑OTR is a compact PU system for OTR solid tires, featuring IBC direct feed, plunger metering (±0.3%), static mixing, and complete air treatment.
The HF-LPM-1A1B-OTR is a compact low-pressure PU foaming system for manufacturing OTR polyurethane solid tires with two-component raw materials. Two independent metering units draw materials directly from IBC totes for uninterrupted supply. Plunger metering pumps with variable frequency motors deliver ±0.3% accuracy, with flow rate adjusted by motor speed to suit various formulations. Materials blend in a leak-proof, anti-clogging static mixer, and a glue shut-off valve at the outlet connects quickly to tire air nozzles. Working pressure is limited within 0–2 MPa, with automatic injection stop and alarm once the threshold is exceeded. Each pipeline is fitted with a 300 μm mesh filter to block impurities. PLC control with HMI touch panel displays real-time flow rates, sampling duration, component pressure and post-filling tire pressure, with multi-level fault detection and audio-visual alarms for automatic shutdown under critical faults. Separate pipelines deliver raw materials and compressed air, the latter pre-treated through oil-water separators and oil mist eliminators for clean, dry supply. Remote injection start/stop and reserved remote maintenance ports support convenient after-sales service.
Production Workflow
Raw Material Feeding from IBC Totes
Two independent metering units draw polyurethane components A and B directly from IBC tote tanks for continuous production.
High‑Precision Metering & Ratio Setting
Plunger metering pumps with VFD control deliver ±0.3% accuracy; flow rate is adjusted per formula (standard A:B = 100:100).
Static Mixing & Tire Filling
Materials pass through 300μm filters and blend in the static mixer; mixed PU is pumped into tire cavities via glue shut‑off valve connected to tire air nozzles.
Pressure Control, Venting & Curing
Complete tire filling is achieved through controlled pressure (0‑2 MPa) and venting; overpressure triggers automatic shutdown and alarms.
Technical Specifications
Specifications are based on standard configurations. Custom flow rates, tank sizes, and remote maintenance interfaces available upon request.
| Technical Parameter | HF-LPM-1A1B-OTR |
|---|---|
| Discharge Flow Rate | 300–1000 L/h |
| Raw Material Mix Ratio | A:B = 100:100 |
| Tank Volume | 30 L |
| Total Motor Power | 2.2 kW |
| Metering Accuracy | ±0.3% |
| Working Pressure | 0–2 MPa |
| Filtration | 300 μm mesh filter per pipeline |
| Weight | 160–180 kg |
| Warranty Period | 1 year |
| Certifications | Confirm applicable documents for the quoted configuration |
| Brand Name | Haifeng |
Key Advantages
Six engineering and production benefits that deliver durable, high‑performance OTR solid tires with precision control, safety protection, and easy maintenance.
High‑Precision Plunger Metering & Stable Delivery
Plunger metering pumps with variable frequency motors deliver ±0.3% accuracy. Flow rate is precisely regulated to meet various mixing ratios, ensuring consistent tire quality across batches.
Wide Flow Range for Versatile Production
Discharge flow rate from 300 to 1000 L/h covers a broad range of OTR tire sizes and filling requirements, from smaller agricultural tires to large mining equipment tires.
Superior Filtration & Anti‑Clog Static Mixing
300 μm mesh filters on each pipeline block impurities effectively. The static mixer offers leak‑proof, anti‑clogging performance with easy cleaning and maintenance.
Intelligent PLC Control with Comprehensive Safety Protection
PLC + HMI touch panel displays real‑time flow rates, pressure, and tire fill status. Multi‑level fault detection with audio‑visual alarms and automatic shutdown protects equipment and ensures safety.
Complete Air Treatment System for Clean Operation
Separate compressed air pipelines with oil‑water separators and oil mist eliminators deliver clean, dry air—critical for consistent PU curing and preventing contamination.
Compact Design with Remote Operation & Maintenance
Lightweight (160‑180 kg) and compact footprint fits easily into existing workshops. Remote injection start/stop switches and reserved remote maintenance ports enable convenient after‑sales support.
Complete Your Production Line
Integrate the product with our full range of auxiliary equipment for a turnkey polyurethane processing system.
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