A spray gun

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 7/04 (2006.01) B67D 7/74 (2010.01) B05B 7/24 (2006.01) F16K 11/20 (2006.01)

Patent

CA 2633159

The invention relates to a spray gun for generating a two-component foam, comprising two pressure vessels (2, 3) for accommodating the original components, ducts which are arranged parallel next to each other inside a gun member (1) in order to convey the original components, dosing valves for metering the original components, and a mixing chamber for producing the two-component foam. The dosing valves are embodied as needle valves, each of which is provided with a valve port that opens directly into a removable nozzle tip (4) inside which the mixing chamber is disposed. In order to create a simple structure while making the spray gun easy to clean, the connection points for the pressure vessels are placed one behind another in an axial direction while the pressure vessels (2, 3) are positioned substantially perpendicular to the gun member.

L'invention concerne un pistolet pulvérisateur servant à produire une mousse à deux composants, lequel pislolet comporte deux réservoirs sous pression (2, 3) destinés à recevoir les composants de départ, des canaux d'acheminement parallèles (10, 11) juxtaposés dans un corps (1) du pistolet et destinés à acheminer les composants de départ (11), des soupapes de dosage (14, 15) destinées à doser les composants de départ ainsi qu'une chambre de mélange (19) dans laquelle la mousse à deux composants est produite, les soupapes de dosage (14, 15) étant conçues sous la forme de soupapes à pointeau pourvues d'une ouverture de soupape respective débouchant directement dans une pointe de buse amovible (4), dans laquelle la chambre de mélange (19) est placée. Selon ladite invention, les points de raccordement des réservoirs sous pression sont situés l'un derrière l'autre dans le sens axial et les réservoirs sous pression (2, 3) sont disposés de façon sensiblement perpendiculaire au corps du pistolet, ce qui permet d'obtenir un pistolet de construction simple et facile à nettoyer.

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