Equipment for cleaning welding torches comprising: - a reserve of a pressurized fluid of carbon dioxide; and - a dispensing device connected with said reserve to receive said pressurised fluid of carbon dioxide and dispense onto a welding torch, in order to clean it, a jet or flow which is cold or has a relatively low temperature of approx. -78°C compared with ambient temperature, which said flow is produced by expansion in the external environment and consequent cooling of the fluid received from said reserve, wherein said dispensing device in turn comprises: - a regulating valve designed to regulate the rate and intensity of said cold flow, supplied to the welding torch in order to clean it; - a dispensing nozzle, fitted at the exit of the dispensing device, to generate and dispense said flow onto the welding torch, with said dispensing nozzle having along its axis a central pipe and, at one outwards-facing tip end, a series of holes and grooves, with said central pipe, said tip end and said holes and grooves being configured to suitably direct, at the output of the dispensing device and towards the interior of the welding torch, the flow of carbon dioxide and thereby also the flow of carbon dioxide snow that is formed in the external environment by expansion and consequent cooling of the same carbon dioxide, and with said holes extending, in said tip end of the dispensing nozzle, in the radial direction relative to the axis of the central pipe so as to convey and laterally direct at least a part of the flow of the carbon dioxide snow; and - an adapter sleeve, associated with said dispensing nozzle and designed to receive the external body of the welding torch; wherein said dispensing device is designed to fit and couple with the welding torch to be cleaned via a male-female coupling, with the adapter sleeve acting as a female part with respect to the outside of the external body of the welding torch and the tip of the dispensing nozzle acting as a male part with respect to the inside of the external body of the welding torch in said coupling, wherein said fluid is constituted by carbon dioxide, whereby the cold flow, produced at the exit of said dispensing device by the expansion in the external environment and consequent cooling of carbon dioxide, is formed by dry ice containing solidified micro particles (p) of carbon dioxide, wherein said reserve is constituted by an ordinary cylinder containing pressurised carbon dioxide, wherein the carbon dioxide exhibits, in said ordinary cylinder, a liquid phase (CO2') and a gaseous phase (CO2") and, in particular, is fed to said dispensing device by a siphon tube immersed in said liquid phase (CO2'), and wherein said cylinder is associated with at least one closing element (12a, 12b), manually operable, having the function of closing or opening the supply of the pressurised carbon dioxide from the same cylinder to the dispensing device. - a reserve of a pressurized fluid of carbon dioxide; and - a dispensing device connected with said reserve to receive said pressurised fluid of carbon dioxide and dispense onto a welding torch, in order to clean it, a jet or flow which is cold or has a relatively low temperature of approx. -78°C compared with ambient temperature, which said flow is produced by expansion in the external environment and consequent cooling of the fluid received from said reserve, - a regulating valve designed to regulate the rate and intensity of said cold flow, supplied to the welding torch in order to clean it; - a dispensing nozzle, fitted at the exit of the dispensing device, to generate and dispense said flow onto the welding torch, with said dispensing nozzle having along its axis a central pipe and, at one outwards-facing tip end, a series of holes and grooves, with said central pipe, said tip end and said holes and grooves being configured to suitably direct, at the output of the dispensing device and towards the interior of the welding torch, the flow of carbon dioxide and thereby also the flow of carbon dioxide snow that is formed in the external environment by expansion and consequent cooling of the same carbon dioxide, and with said holes extending, in said tip end of the dispensing nozzle, in the radial direction relative to the axis of the central pipe so as to convey and laterally direct at least a part of the flow of the carbon dioxide snow; and - an adapter sleeve, associated with said dispensing nozzle and designed to receive the external body of the welding torch;