Gun head of fire-fighting water cannon

Abstract

The invention discloses a gun head of a fire-fighting water cannon. The gun head comprises a gun head shell, an inner nozzle, a spray core, a first flow stabilizer and a second flow stabilizer, wherein the gun head shell is internally provided with a water flow channel; the first flow stabilizer is arranged at the water flow inlet of the gun head shell, the second flow stabilizer abuts against theinterior of the gun head shell through the inner nozzle, the spray core is arranged at the water outlet of the gun head shell, and the tail end of the spray core is inserted into the inner nozzle; the head end of the inner nozzle is provided with an inclined outlet, wherein the outlet area of the inclined outlet is gradually enlarged along the spraying direction, the head end of the spray core can block the inclined outlet, and an elastic part is arranged inside the spray core; the spray core can overcome the elastic force of the elastic part and move relative to the water flow channel when being subjected to the water pressure action, so that the overflowing area of the water outlet is changed; and the structure of the double-flow-stabilizer enables the water flow to be more stable whenthe water flow is sprayed out of the fire-fighting water cannon, the water spray flow cannot be dissipated, and the range and the shooting height of the fire-fighting water cannon are improved; and the self-adaption of the size of the opening is achieved under the action of the water pressure and the elastic part, so that the self-adaptability of the water cannon can be better.

Description

technical field [0001] The invention relates to the technical field of fire-fighting equipment, in particular to a nozzle of a fire-fighting water monitor. Background technique [0002] The fire water cannon is an important fire-fighting equipment for fighting fires. It is mainly composed of two parts: the cannon body and the nozzle. The gun body is mainly composed of a curved pipe, a horizontal slewing mechanism and a pitching slewing mechanism. According to different structural forms, nozzles can be divided into straight-flow nozzles and diversion nozzles. The direct-flow gun head can only realize long-distance direct-current jet flow. By directly spraying the fire source, the temperature of combustibles can be reduced below the ignition point, thereby realizing fire extinguishing; The short-range spray jet, the spray jet mainly sprays droplets on the fire source at close range, isolating the fire source and oxygen, so as to achieve fire extinguishing. The interior of t...

AI Technical Summary

Problems solved by technology

The interior of the diversion gun head is a cantilever structure. Although the internal structure of the nozzle is symmetrical, the curved pipe structure of the gun body makes the pressure and velocity of the water flow into the nozzle show obvious asymmetry characteristics, causing the diversion gun The tremor and shaking of the core rod inside the head makes the water jet diverge and reduces the range and height of the fire water cannon

Images