The 90D hydraulic wet spraying machine is a machine, electricity, and hydraulic three-in-one device, widely used in highways, railways, infrastructure, slopes, and other projects. It utilizes hydraulic pump thrust to alternately move the oil cylinder for feeding, and after accelerating the accelerator at the compressed air and nozzle, it sprays onto the sprayed surface. Its production capacity is 3 - 9m³/h, with a maximum system pressure of 22MPa. The equipment has stable performance, few vulnerable parts, and low maintenance costs. It has a high degree of automation, with PLC centralized control and simple operation. The conveying volume can be adjusted as needed, and the amount of accelerator added is infinitely adjustable. It is equipped with an automatic lubrication system to extend the service life of the equipment. In addition, the hydraulic spraying concrete machine is compact and has a wide range of applications, with small spraying pulsation, good continuity, large spraying volume, and energy-saving and environmentally friendly, making it the best choice for infrastructure construction in the new era.