Self-cleaning filters

Self-cleaning filter technology

The self-cleaning filter system developed by C.A.V. is based on an effective counter-current jet of air blowing from the inside towards the outside of the filter cartridge. The heart of the system is a pneumatic rotary nozzle, positioned only 1 cm from the cartridge surface: such a close distance allows the compressed air jet to expand uniformly along the entire filter wall.

This action generates a localised mechanical vibration, which facilitates dust detachment and reopens the porosity of the filter surface, maintaining high extraction efficiency over time. The result is a fully automated system, designed for centralised industrial plants handling sanding and smoothing powders in the automotive, nautical, wood, carbon fibre and fibreglass sectors.

The process is divided into three sectors:

• Vacuum chamber with pneumatic rotary dust extractors, responsible for the automatic cleaning of the filter cartridges.
• Filter sector consisting of high-performance cartridges.
• Dust discharge section, which includes a separator cyclone, a collection tank and a nylon bag supported by a vacuum system to ensure correct positioning.

The bag change is the only manual operation required: it can be done in seconds, in a simple, quick and hygienic way. It is an ideal solution for production environments requiring operational continuity, reduced maintenance and maximum efficiency in dust management.