90D+ hydraulic wet spraying machine is a three-in-one machine with mechanical, electrical and hydraulic functions, which is widely used in highway, railway, infrastructure, hillside, bridge and tunnel projects. It uses the thrust of the hydraulic pump to make the oil cylinder move alternately to feed the material, and then spray it to the sprayed surface after compressed air and the accelerating coagulant at the nozzle. Its production capacity is 5 - 9m³/h. The equipment has stable performance, few wearing parts and low maintenance cost. It has a high degree of automation, PLC centralized control and simple operation. The conveying volume can be adjusted as needed, and the amount of accelerating coagulant added can be adjusted steplessly. It is equipped with an automatic lubrication system to extend the life of the equipment. In addition, the hydraulic spraying concrete machine is compact and has a wide range of applications. It has small spraying pulsation, good continuity, large spraying volume, strong power, energy saving, environmental protection, time saving and labor saving, which is the best choice for infrastructure construction in the new era.