Ultrasonic dispersion nozzle with internal shut-off mechanism ha

Fluid sprinkling – spraying – and diffusing – With means to vibrate or jiggle discharge – By electric transducer

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239569, B05B 108

Patent

active

051040425

ABSTRACT:
An ultrasonic nozzle includes an atomizing surface for producing an atomized liquid spray, a liquid-feed passageway for supplying process liquid to the atomizing surface, the passageway having a first-diameter section and a second fluidly connected smaller-diameter section, with a shoulder defined therebetween; an internal shut-off assembly for controlling the supply of process liquid to the atomizing surface, the shut-off assembly including a shut-off rod slidably positioned within the passageway and having a sealing end adapted to cooperate with the shoulder, an actuator piston connected with the opposite end of the shut-off rod and slidable within a cylinder bore which is in fluid communication with the passageway, and a valve actuator for slidably moving the piston and shut-off rod in the passageway between a first closed position and a second open position, by which operation the supply of liquid to the atomizing surface is controlled. A barrier fluid provided in the cylinder bore between the passageway and the piston at a pressure higher than that of the process fluid in the passageway prevents the process fluid from adversely affecting the shut-off assembly, and a substantially frusto-conical air guide in concentric surrounding relation to the atomizing surface at the tip of the nozzle directs and diffuses the spray formed at the atomizing surface.

REFERENCES:
patent: 2481620 (1949-09-01), Rosenthal
patent: 4000852 (1977-01-01), Martin
patent: 4466571 (1984-08-01), Muhlbaner

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