The main working part of the industrial paint sprayer is a double-acting pneumatic hydraulic booster pump, and the reversing mechanism is a special form of pilot fully air-controlled air distribution reversing device. After entering the compressed air, when the piston moves to the upper or lower end of the cylinder, the upper pilot valve or the lower pilot valve is actuated, and the air flow is controlled to instantly push the air distribution reversing device to reverse, so that the piston of the air motor makes stable and continuous reciprocating motion. Since the piston is rigidly connected with the plunger in the paint plunger pump, and the area of the piston is larger than the area of the plunger, the sucked paint is pressurized. The pressurized paint is delivered to the airless spray gun via a high-pressure hose. Finally, the hydraulic pressure is released at the airless nozzle, and sprayed onto the surface of the object to be coated after instantaneous atomization to form a coating layer.
(1) The quality of the paint film is good, the coating is smooth and delicate, without brush marks. The industrial paint sprayer sprays and atomizes the paint into fine particles evenly distributed on the wall surface, so that the latex paint forms a smooth and dense coating on the wall without brush marks or rolling marks. This is unmatched by primitive methods such as brushing and rolling.
(2) High coating efficiency. The spraying efficiency of single operation is as high as 200 to 500 square meters per hour, which is 10 to 15 times that of manual brushing.
(3) Good adhesion and long coating life. It uses high-pressure spraying to make the atomized coating particles obtain strong kinetic energy, by which the coating particles can shoot into the pores to make the paint film more compact, so as to enhance the mechanical bite force between the paint film and the wall, improve the adhesion of the coating, and effectively extend the service life of the coating.
(4) The paint film thickness is uniform, and the paint utilization rate is high. The thickness of the manual brush roller is extremely uneven, generally between 30 to 250 microns, and the paint utilization rate is low; while the airless spraying can easily obtain a coating with a thickness of 30 microns.