| 摘要 |
FIELD: fire safety.SUBSTANCE: invention relates to fire-fighting equipment. In the drencher the housing is made in the form of a central sleeve with the external hexagon and the internal cylindrical surfaces. On the two end sides of the central sleeve an internal thread is made. One end side is axially mounted to the inlet branch through the locknut. The other end side is mounted to the spraying element made in the form of a sleeve. The sleeve inner diameter is equal to the inner diameter of the inlet branch. The sleeve by means of the arcs located along a conical surface is mounted to the connector which is a part of the spherical surface. The spherical surface is limited by the inner and outer hemispheres. The centre of the hemisphere lies on the line connecting the axis of the central sleeve and the axis of the inlet branch. On a spherical surface at its outer side at least three slots are made. The slot axes are located on the lines radial with respect to the hemisphere. In the peripheral part of the hemisphere there are at least three orifice holes. The centres of the holes lie in a plane parallel to a diametral plane of the hemisphere which is perpendicular to the axis of the inlet branch. The blocking valve is located axisymmetrically to the spraying element, made in the form of a ball. The ball is fixed by the spring located inside the central sleeve, to the conical surface formed on the end of the inlet branch, facing in the direction of the spraying element. In the side surface of the central sleeve with external hexagonal and internal cylindrical surfaces at least three orifice holes inclined towards the connector are made. The axes of the holes intersect at a point lying on the central sleeve axis and form an acute angle with this axis in the plane of the drawing.EFFECT: increased efficiency of fire-fighting due to operation speed and reliability and enhancing manufacturability and setting.1 dwg |
