The difference between dry spraying machine and wet spraying machine in concrete spraying machine

What is the difference between dry spray guns and wet spray guns in concrete spraying machines? Below we mainly introduce the following aspects:

1. Spraying mode is different between dry spraying machine and wet spraying machine.

Dry spray guns are filled with dry cement or concrete aggregates in the hopper. When spraying, water needs to be added at the joints of the machine nozzles to ensure the spraying effect of the spray gun, but more dust will be produced. The physical harm to workers is greater.

Wet spraying machine is the cement or concrete aggregates and other water evenly stirred to form a wet material and then spray, the machine nozzle does not need to add water, no dust, less harm to the workers body, to ensure the working environment And save material.

2. The difference between safety and operator in dry spray gun and wet spray gun

Dry shotcreting machines generate large amounts of dust during shotcreting. They have relatively large environmental pollution and physical damage to construction workers. This is not conducive to underground construction and operation of machines. Dry sprayers require more operators.

The slurry of the wet spraying machine is mixed well in advance, does not take up a lot of manpower, does not generate dust, is less harmful to the environment and workers, and can be used in various working environments.

3, dry mortar and wet mortar resilience and cohesion are different

The resilience rate of the dry spraying machine is also large, and it may cause the poor cohesiveness. In particular, downhole construction may be deformed due to changes in the earth's crust, which may easily cause splitting and destruction.

The wet rate of the wet spraying machine is relatively small. The slurry of the spraying machine is mixed well with the water-cement ratio in advance, the cohesion of the slurry is relatively high, and the deformation and deformation of the crust is small.

4、Dry spraying machine and wet spraying machine have different conveying distance and wind pressure

The maximum conveying distance of dry spraying machine can exceed 200 meters.

The slurry sprayed by the wet spraying machine is a well-mixed wet slurry, which is slightly weaker in the conveying distance.