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