The concrete rotor dry spraying machine is a common equipment for spraying concrete. It uses the rotation of the rotor to feed dry material into the delivery pipe at a certain speed and quantity, and then compressed air transports the dry material to the nozzle, where it is mixed with water and sprayed onto the working surface. Its structure is compact, with a small volume, making it easy to move and operate, suitable for use in various complex construction sites. It has a high spraying efficiency, capable of meeting the concrete spraying operation needs of a certain scale. At the same time, its sealing performance is good, effectively reducing dust dispersion, improving the construction environment, and minimizing the impact on the health of operators. It is widely used in concrete spraying construction in projects such as tunnels, mines, and building foundations.