NOZZLE WITH SWIRLER OF DOUBLE TWIST OF FLOW Russian patent published in 2013 - IPC A62C31/00 

FIELD: fire-fighting facilities.

SUBSTANCE: invention relates to the liquid spraying technique and can be used in fire-fighting equipment, the nozzle with a swirler of double twist of flow. At that it comprises a hollow housing with a nozzle and a central core. At that the housing is made with a channel for supplying liquid and has a coaxial sleeve rigidly connected to the housing with the nozzle secured to its lower part, made in the form of a cylindrical two-stage sleeve, the upper cylindrical stage of which is connected by a threaded connection with the central core mounted with the annular gap with respect to the inner surface of the cylindrical sleeve. At that consisting of a cylindrical part with the swirler coaxially fixed in its lower part, made in the form of a cylinder with a central orifice, on which outer surface at least double-helical thread is made, and in a central orifice the element of the secondary swirling of flow is fixed, at that made in the form of a cylindrical helical spring located flush with the upper end of the swirler, and protruding behind its lower end by an amount not exceeding the diameter of the central orifice.

EFFECT: increased efficiency of fine atomisation of liquid is achieved.

1 dwg