A pressure equalizer for use in feeders of ceramic enamels or paints for spray guns, particularly automatic spray guns installed on enamelling or painting robots

摘要

This invention relates to a pressure equalizer for use in a feeder (10) designed to feed a ceramic enamel, or a paint in general, to a spray gun (P) of an automatic type in general, and in particular to a spray gun (P) associated with an enamelling or painting robot (15). The feeder (10) is of the type utilizing an air-operated pump (12) and the pressure equalizer (20) is mounted close to the spray gun (P). The pressure equalizer (20) includes a pressure sensing element (22) for sensing the pressure at which an enamel or paint is fed to a spray gun (P), the sensing element (22) applying the pressure changes in a throttling member (40) which is fitted in the line supplying compressed air to the air-operated pump (12) so as to ensure that a controlled constant flow of enamel or paint is fed to the associated spray gun (P) for any working position thereof.