A wet shotcrete sprayer is a specialized concrete spraying machine used in tunnels, mines, slopes, and underground projects. It integrates travel, pumping, and spraying, enabling efficient and precise concrete spraying operations. Below is a brief introduction to the working principle, advantages, and application areas of a wet shotcrete sprayer.

  I. Working Principle of a wet shotcrete sprayer

   A concrete pump delivers mixed concrete to the end of the spraying arm. Accelerators are added, and compressed air is used at the nozzle to spray the concrete onto the work surface at high speed, causing it to solidify rapidly and achieve support and reinforcement.

   II. Advantages

   1. High Construction Efficiency

   ① Large Displacement: For example, the ZXP4517 wet shotcrete sprayer from Zhengxun Heavy Industries has a theoretical spraying capacity of up to 45 cubic meters per hour. This trolley can complete large quantities of concrete spraying work in a short period of time, significantly shortening construction schedules.

   ② Continuous and Stable Output: Utilizing an advanced pumping system, it reduces downtime and can adapt to high-intensity operations. For example, the Blue Ocean Intelligent Equipment concrete spraying trolley, with its fully automatic wireless remote control, can flexibly complete concrete spraying operations on various work surfaces, improving work efficiency.

  2. High Construction Quality

   ① Precision Control: Equipped with an intelligent control system, it precisely adjusts the spraying angle, distance, and volume to ensure uniform concrete layer thickness and density. For example, the ZXP4017 wet spraying robot from Zhengxun Heavy Industry uses precise spraying combined with a precise pressure control system to significantly reduce concrete rebound, minimize material waste, and improve construction quality.

   ② Reduced Human Error: Wireless remote control allows the operator to operate from a safe distance away from the work surface, eliminating manual errors and ensuring precise reproduction of the spray trajectory.

   3. High Operational Safety

   ① Remote Control: The operator can control the various movements of the wet shotcrete sprayer via a remote control from a safe distance, away from the spraying surface, preventing injuries from splashing concrete, dust, and other hazards.

   ② Multiple Safety Protections: Equipped with multiple safety features, including an anti-overturning structure and an intelligent alarm system, the ZXP4017 wet spraying manipulator from Zhengxun Heavy Industries utilizes a dedicated engineering chassis and four-wheel drive system, offering excellent maneuverability and stability, enabling safe operation on complex road surfaces and in tunnels.

   4. Energy Saving and Environmental Protection

   ① Reduced Energy Consumption: Utilizing a high-efficiency hydraulic system and dual-power design, the ZXP4017 wet spraying manipulator maintains performance while reducing energy consumption. For example, the customized 65kW energy-saving motor installed in the ZXP4017 wet spraying manipulator significantly reduces energy consumption compared to traditional equipment.

   ② Low Dust Pollution: Compared to traditional dry spraying, the wet spraying process effectively reduces dust generation, improves the construction environment, and protects the health of construction workers.

  III. Application Areas

   ① Tunnel Engineering: During railway and highway tunnel construction, wet spraying manipulators can spray concrete support on the tunnel walls, stabilize the excavation face, and ensure construction safety and progress.

   ② Mining: Used for supporting mine tunnels, rapidly consolidating rock and preventing falls, ensuring the safety of mining workers and smooth production.

   ③ Water Conservancy Projects: Precisely spraying concrete in the construction of hydropower tunnels, culverts, and dam slopes ensures structural stability and improves the safety and durability of water conservancy facilities.

   ④ Other Applications: Widely used in foundation reinforcement for bridges, roads, and underground spaces, slope support, stabilizing rock and soil for geological disaster prevention, and ensuring rapid response and passageway safety during emergency rescue.

   Future wet shotcrete sprayers will be equipped with more advanced sensors and control systems to achieve a higher degree of automation in spraying operations. For example, laser scanning or 3D imaging technology will automatically identify the shape and size of the work surface and automatically adjust the position and angle of the spraying arm for precise spraying.