The main working part of the high-pressure airless spraying machine is a double acting pneumatic hydraulic booster pump, and the reversing mechanism is a special form of pilot operated fully pneumatic control gas distribution reversing device. After entering the compressed air, when the piston moves to the upper or lower end of the cylinder, the upper or lower pilot valve is activated, controlling the airflow to instantly push the air distribution reversing device to change direction, thereby making the piston of the pneumatic motor move steadily and continuously back and forth. Due to the rigid connection between the piston and the plunger in the paint hydraulic pump, and the fact that the area of the piston is larger than that of the plunger, the sucked paint is pressurized. The pressurized coating is transported through a high-pressure hose to an airless spray gun, and finally, hydraulic pressure is released at the airless nozzle, instantaneously atomized, and sprayed onto the surface of the coating to form a coating layer.
