Fluid supply device for spraying system

Abstract

The present invention relates to a fluid supply device for a spraying system, comprising a first module (1) with two feed lines (50, 60) for paint, the lines being independent from each other and connected to a first color changer (100) with color valves (103, 104) disposed therein and circulation valves (105, 106), further comprising two lines that are independent from each other for the circulation of the paints (51, 61), the lines connecting a first color changer (100) to a second color changer (400) with release valves (401, 402) disposed therein. The color valves (103, 104) of the first color changer (100) are connected on the one hand via a common line (82) to a cleaning agent valve (101) and an air valve (102), and on the other hand are connected via a common pressure regulator line (55a, b) by a pressure regulator (200) disposed therein and a dosing pump (300) to the release valves (401, 402), a discharge valve (403) as well as a discharge line (56) of the second color changer (400). The invention further comprises a second module (2), having two lines (52, 62) that are independent from each other for feeding the paints to a third color changer (500) and / or a two-component mixer (510), wherein the lines comprise discharge valves (501, 503) and return lines (53, 63) and are disposed in the direct vicinity of a spraying system (77).

Description

technical field [0001] The invention relates to a fluid supply device for a spraying system, in particular a paint spraying system, and a method for its application. Background technique [0002] When changing the paint in a spray system, the paint used in the system must be removed and new paint added. For this purpose, when the pump is external, clean the paint supply lines to the nozzles and all internal components such as paint change units, pressure regulators or metering units with the flushing fluid. In this method, all the paint in the pipeline is wasted, so the amount of paint and cleaning fluid will be large and the cleaning time will be long. [0003] Another way to clean a paint line is to use a line cleaner to force the paint back into a loop, followed by clearing the paint line with a purge fluid. In this method, the loss of paint during paint change is relatively low, but the technical cost for the control is high, so that the stability of this system is pro...

AI Technical Summary

Problems solved by technology

In this method, the loss of paint during paint change is relatively low, but the technical cost for control is high, so the system stability is prone to failure and the cost is also high

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