Two-in-one fire-fighting lance

Abstract

The invention discloses a two-in-one fire-fighting lance. The two-in-one fire-fighting lance comprises a lance body, an adjusting outer sleeve and a sector water wall flow limiting nut, wherein a water flow main channel is formed in the lower portion of the inner side of the lance body. The two-in-one fire-fighting lance is provided with the adjusting outer sleeve, the adjusting outer sleeve is movably connected with the lance body, and when water flow is adjusted to be linearly sprayed through the adjusting outer sleeve, the water flow and a center straight through hole can form thick and strong water flow, and the landing area is large, so that the fire extinguishing speed is effectively improved; and when a large height difference exists between a pump and a fire extinguishing point, the pressure of water near the lance is obviously reduced and when the range is severely shortened, the outer sleeve can be adjusted to close a sector water wall spraying channel, and only the central straight through hole with the small central section is reserved for concentrated pressure to achieve long-distance spraying, so that the maximum range can be effectively increased when the bottom water pressure is increased; and an anti-falling protection ring is arranged at the outer side of the adjusting outer sleeve in a matched manner, so that a good protection effect can be achieved, and theactual service life of the fire-fighting lance is prolonged.

Description

technical field [0001] The invention relates to the technical field of fire-fighting water guns, in particular to a two-in-one fire-fighting water gun. Background technique [0002] The fire water gun is a water jet tool for fire extinguishing. When it is connected with a hose, it will spray dense and substantial water flow. It has the advantages of long range and large water volume. According to the different jet forms and characteristics, it can be divided into: DC water gun, spray water gun, multi-water gun, etc. The commonly used water guns are direct current and spray water guns. [0003] When the fire water nozzles on the market are adjusted to form a fan-shaped water wall, they can only be used to block the flame or heat source from harming and burning the firefighters. In the case of direct current injection, although the range is increased, water can be sprayed to a longer distance for fire extinguishing, but without the existence of fan water wall, it cannot prev...

AI Technical Summary

Problems solved by technology

This increases the difficulty of manpower input and operation coordination. When there is a large height difference between the fire truck or the water pump and the fire source point, due to the limited pressure of the water pump, the water pressure reaching the water gun will drop significantly during high-lift fire extinguishing

When the water pressure is low, when the traditional water gun is adjusted to a straight-line spraying state, because of the structure of the water gun, the opening cross-sectional area is relatively large, and the shooting range will become very short. The traditional water gun can only choose one of the working states, that is, straight-line spraying or The spraying of the fan water wall greatly reduces the fire extinguishing efficiency and the comfort of personnel. When the spraying is adjusted to a straight line, the range is relatively short due to structural reasons. Therefore, we propose such a two-in-one fire water nozzle.

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