Filter element
0102030405
Airless spray gun filter Spray machine filter
Introduction to Airless Spray Gun Filter
The airless spray gun filter is a core component in airless spraying equipment, whose core function is to intercept impurities in the coating, prevent nozzle blockage, and ensure spraying stability. This filter usually adopts a three-stage filtration system: the first stage is a disc-shaped filter at the paint suction port, which intercepts the original impurities with a metal mesh or polymer filter screen; The second stage is located between the accumulator and the shut-off valve, and residual solidified coating particles are removed through a precision filter element; The third level is a small tubular filter at the nozzle joint, which further filters out any soft objects that may be mixed into the high-pressure hose. Taking brands such as GRACO as an example, their filters are made of alloy materials that are resistant to high pressure and corrosion. The filter accuracy can reach 50-100 microns and can withstand pressures of over 20MPa, ensuring long-term stable operation in high-pressure environments.
Characteristics of airless spray gun filter
The airless spray gun filter has three significant characteristics: firstly, it has high filtration capacity. The three-stage filtration system can intercept more than 99% of impurities, especially suitable for fine filtration of high viscosity coatings (such as 100s coating -4 viscosity); The second is pressure and corrosion resistance, made of stainless steel or polytetrafluoroethylene material, which can resist the erosion of strong solvents such as benzene and ketones, and withstand the extreme pressure output by high-pressure pumps; The third is modular design, for example, the filter of the Graco XTR5 series spray gun supports quick disassembly, and users can replace it within 30 seconds, significantly reducing downtime. In addition, some new filters adopt sintered bronze ball structure and achieve gradient filtration through gradient aperture design, further extending the service life of the nozzle.
Scope of use of airless spray gun filter
Airless spray gun filters are widely used in high-precision and high-efficiency spraying scenarios. In the field of industrial anti-corrosion, it can filter high viscosity materials such as ship coatings and bridge anti rust paints to ensure uniform spraying thickness; In the furniture manufacturing industry, filters can intercept fiber impurities in latex paint, avoiding particle defects in the paint film; In the construction of building exterior walls, its pressure resistance characteristics can adapt to the paint pressure requirements of high-altitude operations above 20 floors. Taking a certain automobile production line as an example, the use of a three-stage filtration system for airless spray guns has increased the utilization rate of coatings to 92%, reducing splashing losses by 40% compared to traditional air spraying. At the same time, the spraying efficiency has been increased from 4m ²/min to 12m ²/min, significantly reducing overall costs.