MULTICONE, MULTISTAGE SPRAYING NOZZLE Russian patent published in 2021 - IPC B05B1/30 B05B1/32 F22G5/12 B05B1/14 

FIELD: machinery.

SUBSTANCE: invention relates to spraying nozzles. A spraying nozzle comprising a nozzle body with a near end, a distal end, a first through hole between the near and distal ends of the nozzle body and a valve seat located at the distal end of the nozzle body, a valve stem slidably located in the first through hole of the nozzle body and comprising a near end, a distal end, and a first valve head, wherein the first valve head defines a mounting surface configured to engage with the valve seat when the valve stem is in a closed position and configured to be located at a distance from the valve seat when the valve stem is in an open position, a fluid channel located in the valve stem, said channel forming a fluid outlet in the first valve head at the distal end of the valve stem, a second valve head attached to the fluid outlet on the valve stem in the valve stem, wherein the second valve head forms a nozzle hole which is permanently open and communicates fluidly with the fluid channel of the valve stem, a displacing apparatus creating a force that displaces the first valve head in the valve stem towards the valve seat of the nozzle body, and a nozzle casing attached to the nozzle body, said casing closing the near end of the valve stem and enclosing the displacing apparatus, wherein, during application of the first fluid pressure which is lower than the threshold fluid pressure to the seating surface of the first valve head, the displacing apparatus maintains the closed position of the valve stem while the second valve head is permanently open, and during application of the second fluid pressure, which is at least equal to the threshold fluid pressure, to the seating surface of the first valve head the valve stem shifts from a closed position to an open position wherein the second valve head remains permanently open.

EFFECT: provided is working range of a nozzle for a steam conditioning apparatus.

28 cl, 3 dwg