Constant flow rate fluid supply device, particularly for a spray gun
AssigneeS K M, Societe Anonyme
InventorMichel Binoche
Life of this patent
Estimating the term…
Abstract
Device for supplying at a constant rate a fluid utilizing apparatus with at least one fluid of variable viscosity, comprising a fluid source delivering said variable viscosity fluid, a first fluid circuit connecting said fluid source to the fluid utilizing apparatus, a second fluid circuit in which flows a constant viscosity fluid, two volumetric pumps mechanically coupled so that their flow rates are in a fixed relationship, a first one of the two pumps being inserted in the first fluid circuit, whereas the second pump is inserted in the second fluid circuit, and adjusting means inserted in the second fluid circuit, downstream of the second pump, for adjusting the flow rate of the constant viscosity fluid. The supply device is particularly suitable for supplying a spray gun with paint.
Claims21
A device for supplying at a constant and adjustable flow rate a fluid utilizing apparatus with at least one fluid having variable viscosity, comprising a first fluid source delivering said variable viscosity fluid, a first fluid circuit connecting said first fluid source to the fluid utilizing apparatus, a second fluid circuit in which flows a constant viscosity fluid, two volumetric pumps mechanically coupled so that their flow rates are in a fixed relationship, a first one of the two pumps being inserted in the first fluid circuit, whereas the second pump is inserted in the second fluid circuit, and first adjusting means inserted in the second fluid circuit, downstream of the second pump, for adjusting the flow rate of the constant viscosity fluid, said first flow rate adjusting means comprising an adjustable pressure reducer connected to the output side of the second pump, and a first calibrated nozzle of adjustable diameter in series with the pressure reducer.
Dependencies are inferred from the claim text.