Hanging - type Painting Line for Fire Extinguishers

The hanging - type painting line for fire extinguishers is a professional production equipment specially designed for the painting process of fire extinguishers. Its aim is to achieve efficient and high - quality painting operations, ensuring that each fire extinguisher can obtain a uniform and durable paint finish. The following is a detailed introduction:

Process Flow

Pretreatment Stage

• Degreasing Treatment: During the production and handling of fire extinguishers, oil stains often remain on their surfaces. Using professional degreasers can effectively remove these oil stains, providing a good adhesion foundation for the subsequent painting process. The presence of oil stains can seriously affect the bonding force between the paint and the surface of the fire extinguisher, leading to easy peeling of the paint.

• Surface Cleaning: After degreasing, use high - pressure water guns to spray strong water flow or adopt ultrasonic cleaning technology to thoroughly remove the residual degreaser, dust, and other tiny impurities on the surface of the fire extinguisher. This step can ensure that the surface of the fire extinguisher is completely clean, further improving the adhesion effect of the paint.

• Rust Prevention Treatment: For fire extinguishers made of metal, rust prevention treatment is required. Common methods include spraying anti - rust primer or using chemical conversion coating technology to form a protective film on the metal surface, preventing the metal from rusting and enhancing the adhesion of the paint, thus extending the service life of the fire extinguisher.

Painting Stage

• Hanging and Loading: Carefully hang the fire extinguishers on the conveyor system that runs through the painting line. This hanging method allows all surfaces of the fire extinguisher, including the body, neck, and handle, to be fully exposed, facilitating all - around painting.

• Primer Spraying: Through an automated up - and - down reciprocating spray gun system, evenly spray the primer on the surface of the fire extinguisher. The primer not only gives the fire extinguisher a basic color but also makes the surface smoother, creating favorable conditions for the subsequent spraying of the topcoat and enhancing the stability of the overall paint surface.

• Topcoat Spraying: After the primer has dried to a certain extent, start spraying the automatic up - and - down reciprocating topcoat. In addition to providing an aesthetic color, the topcoat also has special properties such as fire resistance and UV resistance. During the spraying process, precisely control the parameters of the spray gun to ensure that the topcoat has a uniform thickness and a smooth coating, achieving the ideal appearance effect.

Drying and Curing Stage

• Conveyor - based Drying: The painted fire extinguishers enter the drying chamber along with the conveyor system. Inside the drying chamber, hot air circulation is used to prompt the rapid evaporation of the solvents in the paint, achieving the initial drying of the paint surface. The temperature of the drying chamber and the residence time of the fire extinguishers in it will be precisely adjusted according to the characteristics of the paint used.

• Curing Treatment: For some types of paints, a curing operation is required to completely harden the paint film. Methods such as high - temperature baking, infrared irradiation, or ultraviolet irradiation can be used, depending on the paint formulation. The cured paint surface has stronger adhesion, hardness, and chemical resistance, which can better protect the fire extinguisher and maintain its appearance.

Equipment Features

• Hanging Conveyor System Designed Specifically for Fire Extinguishers: This conveyor system is custom - made according to the shape and weight of fire extinguishers. It is equipped with adjustable hooks and fixing devices, which can stably hang the fire extinguishers during the painting process, ensuring that they will not shake or fall during the movement. At the same time, the conveying speed is stable and controllable, guaranteeing the continuity and consistency of the painting process.

• High - Precision Spray Guns and Automated Control: The spray guns equipped in the painting line can precisely adjust the paint output, spray pattern, and spraying pressure. Through the automated control system, the working parameters of the spray guns can be preset according to the size of the fire extinguisher and the painting requirements, achieving precise painting, reducing paint waste, and improving the painting quality and efficiency.

• Environmental and Safety Design: Fully considering the requirements of environmental protection and safe production, the painting line is installed with efficient ventilation equipment, which can timely discharge the volatile organic compounds (VOCs) generated during the painting process, reducing the concentration of harmful gases in the workshop. At the same time, it is equipped with advanced paint mist purification devices, which use technologies such as filtration and adsorption to effectively collect and process the paint mist, reducing environmental pollution and creating a safe and healthy working environment. In addition, the entire painting line is also equipped with multiple safety protection measures, such as emergency braking devices and fire - and - explosion - proof facilities, to ensure the safety of operators and equipment.