Hydraulic Polyurea Spray Machine | Protective Coatings
Built for pure polyurea and heavy anti-corrosion coatings, the HF-PU200-HYD delivers pulse-free hydraulic dosing up to 21 MPa and integrated 90-meter heated hose management for storage tanks and pipelines.
Non-Fluctuating Hydraulic Power for SPUA Field Application
The HF-PU200-HYD is an industrial hydraulic high-pressure proportioner designed for continuous 1:1 volumetric ratio spraying of pure polyurea and elastomeric protective coatings in heavy corrosion protection projects.
The HF-PU200-HYD is an industrial hydraulic-driven high-pressure proportioning unit engineered specifically for demanding field applications of sprayed polyurea elastomers (SPUA) and 100% solids polyurethane coatings. Unlike pneumatic systems prone to pressure drops during stroke reversals, this system features a horizontally opposed dual-acting hydraulic drive that supports non-fluctuating hydraulic displacement at working pressures up to 21 MPa.
Equipped with multi-stage high-efficiency fluid heaters and copper-mesh insulated delivery lines, the system ensures both A (Isocyanate) and B (Amine-terminated polyether) components reach the collision mixing chamber with matched viscosities. The mechanically purged spray gun delivers continuous, homogeneous atomization without solvent flushes, ensuring defect-free pinhole-free protective membranes across vast steel and concrete infrastructures.
Material Flow and Working Principle
Continuous Chemical Supply & Desiccation
Chemical feed pumps transfer components directly from 200 L drums into the proportioner while molecular-sieve desiccant filters prevent atmospheric moisture from reacting with isocyanates.
Multi-Stage Inline Thermal Conditioning
The two component streams pass through individual cast-aluminum fluid heaters equipped with independent PID thermal controllers, heating the materials up to 75°C to lower fluid viscosities for balanced impingement.
Hydraulic Non-Fluctuating Dosing
The horizontally opposed double-acting hydraulic cylinders displace components at a fixed 1:1 volumetric ratio, maintaining continuous line pressures up to 21 MPa without pressure drop during stroke transitions.
High-Pressure Impingement & Mechanical Purging
High-pressure fluid streams impinge inside the miniature ceramic-insert chamber at speeds greater than 100 m/s, instantly achieving micro-scale blend homogeneity; an automated mechanical purge rod seals the orifices and cleans the chamber instantly when triggering stops.
Model and Technical Parameters
Configuration values from the supplied equipment brief. Final settings and capability are confirmed for the selected material and project conditions.
| Technical Parameter | HF-PU200-HYD |
|---|---|
| Components | 2 Components (1:1 fixed volumetric ratio) |
| Output Range (g/s) | 2.0 to 10.0 kg/min (Continuous spray output) |
| Mixing Ratio Range | 1:1 Fixed (Volumetric ratio) |
| Ratio Accuracy | ±1.0% (Under fluid pressure differential less than 1.5 MPa) |
| Power Supply | 380V, 3-Phase, 50/60Hz (Optional 220V configuration) |
| Working Pressure | 15.0 to 21.0 MPa (Hydraulic fluid delivery lines) |
| Tank Capacity (L) | Direct drum feed (Optional 60 L day tanks) |
| Weight | 360 kg (Main proportioning skid) |
| Dimensions (L×W×H) | 1100 mm x 850 mm x 1350 mm |
Key Equipment Features
The Haifeng package includes the hydraulic proportioner, heated hoses, mechanical-purge spray gun, feed pumps and agreed commissioning support. Rotating pipe-handling/spray fixtures are optional. Coating materials are supplied separately; blasting equipment and site power are customer interfaces.
Pulse-Free Hydraulic Drive
Dual-acting hydraulic pistons provide non-fluctuating delivery up to 21 MPa, eliminating volumetric drift at stroke reversals.
Rapid Dual-Zone Thermal Core
12 kW rapid fluid heaters maintain component temperatures up to 80°C with dedicated thermocouple monitoring.
90-Meter Insulated Hose Reach
Internal copper-mesh wrapped heated hoses prevent temperature drops across long pipeline runs and tall tank elevations.
Mechanical Self-Cleaning Gun
High-velocity impingement chamber with integrated purge rod completely avoids costly solvent flushing and tip clogging.
