Nozzle of fire water cannon

Abstract

The invention relates to a monitor head of a fire-fighting monitor and belongs to the technical field of industrial fire fighting. The monitor head comprises a rotating joint seat, a spiral body and a spiral cylinder, wherein the spiral body is mounted on the rotating joint seat, the spiral cylinder sleeves the outer side of the spiral body, is matched with the spiral body through a spiral groove and can move up and down along the spiral body, a nozzle seat which stretches upwards is fixedly connected to the outer circumferential wall of the upper part of the spiral cylinder, and a flow guiding cone which is inserted into the spiral cylinder is arranged on the circumferential wall of the spiral cylinder; a flow-stabilizing fixing ring is arranged at the top of the rotating joint seat, and a top cover which is fixedly connected with the flow-stabilizing fixing ring is arranged in the center of the nozzle seat; an oblique plane which shrink inwards is arranged the circumferential cycle of an outlet of the flow guiding cone, a step is arranged on the circumferential cycle of the inner circumferential wall of the spiral body, and a compression spring is arranged between the bottom of the flow guiding cone and the step. According to the monitor head of the fire-fighting monitor, water jetting capacity can be finely adjusted according to the pressure in the water jetting process, so that the relative stable water jetting pressure of the fire-fighting monitor can be guaranteed.

Description

technical field [0001] The invention relates to a nozzle of a fire-fighting water monitor, which belongs to the technical field of industrial fire-fighting. Background technique [0002] With the rapid development of society and the continuous expansion of city scale, petrochemical industry, high-rise buildings, large shopping malls and entertainment venues are relatively concentrated and increasing day by day, and various disaster-causing factors are also increasing sharply, so fire safety is becoming increasingly important. As an indispensable fire-fighting equipment, the fire-fighting water cannon is an important fire-fighting equipment for long-distance fire fighting, and the nozzle of the fire-fighting water cannon is an important part to control the spraying distance and area of ​​the fire-fighting water cannon. [0003] The outlet of the nozzle of the traditional fire water cannon can only be adjusted before use. By rotating the cannon barrel to drive its axial moveme...

AI Technical Summary

Problems solved by technology

[0003] The outlet of the nozzle of the traditional fire water monitor can only be adjusted before use. By rotating the nozzle to drive its axial movement to adjust the water outlet distance between the nozzle and the deflector block, thereby changing the state of the water jet, while in use Cannot be adjusted during the process

However, the water pressure of the fire water monitor is often dynamic. Therefore, the fixed size of the water outlet makes the water outlet pressure of the fire water monitor unable to maintain stability, and the spray distance of the fire water monitor cannot be accurately controlled. The range cannot reach the ideal value, thus Affect the effect of fire fighting

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