DEVICE FOR SUPPLYING A SPRAYER WITH A LIQUID COATING PRODUCT

摘要

A device for supplying at least one sprayer with a liquid coating product comprises a plurality of valves for controlling the flow of the coating product to the sprayer, these valves being aligned along a principal axis of the supply device. Each valve comprises a moving needle, a valve body, pneumatic driver for moving the needle in translation, the driver comprising a piston constrained to move in translation with the needle and slidably mounted in a guide body. The principal axis and the separation/approach axis of a valve coincide at a unique point and together define a principal plane of the valve. The_separation/approach axis of each valve is contained within a cone centered on an axis perpendicular to the principal axis and belonging to the principal plane of the valve, the apex of the cone being coincident with the unique point.

主权项

1. A device for supplying at least one sprayer with a liquid coating product, this device comprising several valves controlling the flow of the coating product toward the sprayer, these valves being aligned along a main axis of the supply device and each valve in turn comprising:
a moving needle, a valve body that defines a circulation volume for the coating product and a bearing seat for the needle in the closed configuration of the valve and that bears at least one coupler for connecting a coating product or cleaning product circulation pipe, pneumatic driving means for translating the needle along an axis of separation/approach relative to the seat,these pneumatic driving means comprising a piston secured in translation to the needle and mounted sliding in a guide body, andthe main axis and the axis of separation/approach of a valve being concurrent at a remarkable point and together defining a main plane of that valve,wherein
the axis of separation/approach of each valve is fitted into a cone centered on an axis perpendicular to the main axis and belonging to the main plane of the valve, the apex of which is combined with the remarkable point and the half cone angle of which has a value comprised between 10° and 60°, preferably between 20° and 50°, the axis of separation/approach forms, with the central axis of the cone, an angle whose value is greater than 5°, preferably greater than 30°, the axes of separation/approach of the different valves are parallel.