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Help CenterPressure‑Controlled Intelligent Grouting Equipment for Railway Bridge Prestressing Duct Grouting
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Welcome to Henan Jinhuaiyu Machinery & Equipment Co., Ltd. — a dedicated manufacturer of high-performance grouting solutions. Our Pressure-Controlled Intelligent Grouting Equipment for Railway Bridge Prestressing Duct Grouting is engineered to deliver precise, automated, and reliable injection for prestressed concrete structures. With over 50 professional staff and a modern factory spanning 1,000–3,000 square meters, we focus on creating equipment that meets the rigorous demands of railway and bridge projects worldwide.
This advanced machine integrates real-time pressure monitoring with PLC-based intelligent control, ensuring consistent grouting quality and eliminating common issues like voids or inadequate filling. It is designed to handle cement-based grouts with ease, offering adjustable flow rates and pressures to suit various duct sizes and project specifications.
Whether you are working on high-speed railway viaducts, highway overpasses, or post-tensioned bridge structures, our equipment provides the accuracy and efficiency required by modern engineering standards. Below we detail its core features, technical specifications, and the tangible benefits it brings to your construction site.
Key Features & Technical Advantages
- Intelligent Pressure Control – Closed-loop PID regulation maintains preset pressure within ±0.5 MPa, automatically adjusting pump speed to compensate for grout viscosity changes.
- User-Friendly Touch Screen – 7-inch color display with intuitive menus, allowing operators to set grouting curves, view real-time data, and store historical records for quality traceability.
- Dual Mixing System – High-shear mixer ensures thorough dispersion of cement particles, preventing sedimentation and guaranteeing uniform slurry density.
- Anti-Blocking Design – Special check valves and automatic backflush function reduce the risk of nozzle clogging during pauses or shifts.
- Mobile & Compact – Mounted on a heavy-duty chassis with pneumatic tires, easy to move across bridge decks. Space-saving footprint fits standard construction elevators.
Core Technical Specifications
| Parameter | Value |
| Max Working Pressure | 50 MPa |
| Grouting Capacity | 15–30 L/min (adjustable) |
| Motor Power | 7.5 kW |
| Power Supply | 380V / 50Hz (3-phase) |
| Weight | ~580 kg |
| Dimensions (L×W×H) | 1600×800×1200 mm |
| Control System | PLC + Touch Screen |
| Mixing Method | High-shear impeller, 1400 rpm |
Benefits for Your Project
- Improved Quality: Eliminates voids and honeycombing in prestressing ducts, extending bridge service life.
- Reduced Labor: Automated operation minimizes manual intervention; one operator can manage the entire grouting process.
- Data Traceability: Built-in data logger records pressure, flow, and time for each grouting section, supporting quality documentation as required by many international codes.
- Versatility: Suitable for both cement-based and cementitious grouts, with adjustable mixing parameters for different water-cement ratios.
- Low Maintenance: Sealed bearing and anti-corrosion coating on wetted parts reduce wear and cleaning frequency.
At Henan Jinhuaiyu Machinery & Equipment Co., Ltd., we ship our equipment from major Chinese ports including Tianjin, Shanghai, and Qingdao. Our products have been exported to North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East, demonstrating broad acceptance in demanding grouting applications. Although our company was established in 2025, our team brings together decades of combined experience in fluid machinery and railway construction equipment. We provide 12-month warranty on the main frame and motor, plus lifetime technical support via phone or video call. For customized grouting curves, special voltage requirements, or integrated data reporting, we offer flexible solutions — simply contact our sales team with your project details.
Invest in grouting equipment that delivers consistent results, lower downtime, and greater peace of mind. Request a quotation or arrange a factory visit today to see how our intelligent grouting solutions can support your next railway or bridge project.
Frequently Asked Questions (FAQ)
Q1: What type of grout can this equipment handle?
A: It is designed for cement-based grouts (e.g., ordinary Portland cement, micro-expansion cement) as well as cementitious pre-mixed bags. The mixing system can adjust water-cement ratio from 0.28 to 0.45.
Q2: Is the machine suitable for curved or long-span ducts?
A: Yes, the pressure control automatically compensates for line losses. We recommend performing a trial run on a representative duct section before full production.
Q3: Can the grouting parameters be saved and reused?
A: Absolutely. The PLC stores up to 20 preset recipes. Operators can recall a previous grouting curve with one touch, ensuring repeatability across similar ducts.
Q4: Does the equipment require special electrical installation?
A: It operates on standard 3-phase 380V/50Hz (or customized voltage upon request). A dedicated circuit breaker of 16A is recommended. We provide a 5m power cable.
Q5: How long does it take to clean the machine after use?
A: The automatic backflush and wash-down mode allows one person to complete cleaning within 15-20 minutes using a water hose and the built-in drain valve.
Q6: What spare parts are included with the machine?
A: Each unit comes with a standard tool kit, extra seals, a set of nozzles, and a pressure gauge. An extended spare parts package is available for purchase.
Q7: What is the delivery time?
A: Typically 20–30 days after receiving deposit payment, depending on order quantity and customization level. We ship via FOB any major Chinese port.
Q8: Do you provide on-site training?
A: Yes, we offer video-based commissioning support free of charge. On-site training can be arranged at cost. Our English manual and operation videos are also provided.
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