DRENCHER Russian patent published in 2018 - IPC A62C31/02 B05B1/04 

FIELD: fire safety.

SUBSTANCE: invention relates to firefighting equipment. In the drencher, containing the body and the spraying device, the casing is made in the form of a central bush with an external hexagonal and internal cylindrical surfaces, with an inner thread made from two end faces of the central bushing, wherein the supply pipe is axially symmetrically fastened by means of a lock nut to one of the end faces, and a spraying element, made in the form of a sleeve whose internal diameter is equal to the inner diameter of the supply pipe, is attached to the other, and to which, by means of arcs arranged along a conical surface, an outlet is attached, which is part of a spherical surface bounded by the inner and outer hemispheres, with the center of the hemisphere lying on the line connecting the axes of the central hub and the axis of the supply pipe, and on the spherical surface, from the outside, at least three grooves are made, whose axes are located on the radial lines with respect to the hemisphere, and in the peripheral part of the hemisphere at least three chokes are made, the centers of which lie in a plane parallel to the diametral plane of the hemisphere, which is perpendicular to the axis of the inlet branch pipe, wherein the axially symmetric spraying member is provided with a locking valve in the form of a ball fixed by a spring disposed within the central hub to a conical surface formed at the end of the supply pipe facing the spraying element, and in the lateral surface of the central sleeve with the external hexagonal and internal cylindrical surfaces, at least three chokes inclined towards the outlet are formed, their axes intersect at a point lying on the axis of the central hub, and form an acute angle with this axis in the plane of the drawing, and the cross section of the arcs located along the conical surface and connecting the sleeve with the socket is made profiled, for example screw profiled, to increase the effect of finely dispersed spraying of the foam solution.

EFFECT: increased effectiveness of fire extinguishing.

1 cl, 1 dwg