Self regulating fluid bearing high pressure rotary nozzle...

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 3/06 (2006.01) B08B 3/02 (2006.01)

Patent

CA 2752748

A high pressure rotary nozzle having a rotating shaft (1) operating within a fixed housing (B, C) wherein the axial force which acts upon the shaft due to the fluid pressure at the shaft inlet is balanced by allowing passage of a small amount of the pressurized fluid to be bled to a frusto-conical chamber between the outside of the shaft and the inside of the housing where the fluid pressure can act axially in an opposing direction upon the shaft to balance the axial inlet force. The balance of axial forces is self-regulating by controlling escape of the fluid through a frusto-conical region between the shaft and housing. This further provides a fluid bearing between the two surfaces and allows use of interchangeable rotating jet heads (15) having jet orifices (16) which can be oriented in virtually any desirable configuration including axially forward of the nozzle.

L'invention concerne une buse rotative haute pression dotée d'un arbre tournant (1) fonctionnant à l'intérieur d'un carter fixe (B, C), l'effort axial qui agit sur l'arbre du fait de la pression du fluide à l'entrée de l'arbre étant équilibré en permettant le passage d'une petite quantité de fluide sous pression soutirée en direction d'une chambre tronconique entre l'extérieur de l'arbre et l'intérieur du carter, où la pression du fluide peut agir axialement sur l'arbre dans un sens opposé de manière à équilibrer l'effort axial d'entrée. L'équilibre des efforts axiaux est autorégulé en commandant l'échappement du fluide à travers une région tronconique entre l'arbre et le carter. Ceci crée en outre un palier fluide entre les deux surfaces et permet l'utilisation de têtes tournantes interchangeables (15) d'éjection dotées d'orifices (16) d'éjection qui peuvent être orientés quasiment dans n'importe quelle configuration souhaitable, notamment axialement vers l'avant de la buse.

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