Wet spray concrete machines and wet spray manipulators are two different types of equipment used for spraying concrete in the construction industry. They differ significantly in structure, function and application. Here's a detailed comparison of the two devices.

　　Difference 1. Different equipment types

　　- Concrete wet spraying machine: This is a traditional concrete spraying equipment, usually consisting of a mixing device and a spraying device. It is suitable for small-scale spraying operations and is relatively simple to operate.

　　- Wet spray manipulator: This is a more advanced and automated equipment that usually includes a robotic arm and a spray head. It enables more complex injection paths and higher injection accuracy.

　　Difference 2. Different sizes of equipment

　　- Wet concrete spraying machine: relatively simple, usually small in size and with certain limitations in operational flexibility.

　　- Wet spray manipulator: It is a large-scale intelligent equipment with a higher degree of automation.

　　Difference 3. Degree of automation

　　- Wet concrete spraying machine: usually requires manual operation. Although a certain degree of automation can be achieved, it mainly relies on the operator's experience and technology.

　　- Wet spray manipulator: It has a high degree of automation capability and can spray concrete more flexibly and accurately, covering a larger area. Automatic injection can be realized through programming, which reduces the influence of human factors and improves construction quality and efficiency.

　　Difference 4. Scope of application

　　- Concrete wet spraying machine: suitable for small projects and simple spraying tasks, such as lining of small tunnels, slope reinforcement, etc.

　　- Wet spray manipulator: suitable for large-scale, complex-shaped spray operations, such as full-section spraying of large tunnels, concrete pouring of special structures, etc.

　　Difference 5. Construction efficiency

　　- Wet concrete spraying machine: Due to its operating limitations, the construction efficiency is relatively low.

　　- Wet spray manipulator: Due to its high degree of automation and flexibility, the construction efficiency is much higher than that of traditional wet spray machines.

　　Difference 6. Cost-effectiveness

　　- Wet concrete spraying machine: The initial investment is low, but due to limitations in construction efficiency and quality, it may not have a cost advantage in the long run.

　　- Wet spray manipulator: Although the initial investment is high, due to its high efficiency and high precision, it can save a lot of manpower and time costs in the long run.

　　Difference 7. Operation difficulty

　　- Concrete wet spraying machine: The operation is relatively simple, but the technical requirements for the operator are high.

　　- Wet spray manipulator: It requires certain technical training to operate skillfully, but once mastered, the operation is not difficult.

　　Concrete wet spraying machines and wet spraying robots each have their own advantages and applicable scenarios. When choosing which equipment to use, the decision should be based on specific project needs, budget and construction conditions. With the technological advancement of the construction industry, wet spray manipulators are gradually becoming the mainstream shotcrete equipment due to their high efficiency and high precision.