Airless paint sprayer outlet check valve

Details Airless paint sprayer outlet check valve Airless paint sprayer outlet check valve

B - Operations, Transporting

05

B

B05B 1/30 (2006.01) B05B 9/043 (2006.01) F04B 53/10 (2006.01) F16K 15/04 (2006.01)

Patent

CA 2214419

An airless paint sprayer (10) includes an outlet check valve assembly (66) having a dual spring configuration which allows for increased fluid flow through the valve without diminishing response time of the valve (66) or the priming operations of the system. One of the springs (80) is not engaged when the valve (66) is closed and the other spring (82) has a much lower spring rate and biases the valve (66) toward a closed configuration when the valve (66) is open, closed, and all positions therebetween. The dual spring configuration accommodates highly viscous fluids or paints with maximum fluid flow and no detrimental impact on the priming operations of the sprayer (10).

Le pulvérisateur de peinture sans air décrit (10) comporte un clapet de refoulement (66) muni de deux ressorts, ce qui permet un écoulement accru de fluide dans la soupape sans diminuer le temps de réaction du clapet (66) ni gêner l'amorçage du système. L'un des ressorts (80) n'est pas activé lorsque le clapet (66) est fermé, et l'autre ressort (82) a une constante de rappel très inférieure et pousse le clapet (66) vers une position fermée lorsque le clapet (66) est ouvert, fermé, ou dans n'importe quelle position intermédiaire. La configuration à deux ressorts convient aux fluides très visqueux ou aux écoulements de peinture à vitesse maximum, et n'a pas d'effet indésirable sur l'amorçage du pulvérisateur (10).

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