High-water-pressure water-mist spray head

Abstract

The invention discloses a high-water-pressure water-mist spray head. The high-water-pressure water-mist spray head comprises a base, and a nozzle body which is provided with a spray head hole and is arranged on the base, wherein a hollow cylindrical inner cavity is arranged in the nozzle body, and a tapered surface is arranged on the top part of the inner cavity; the spray head hole is formed in a top point of the tapered surface; an atomizing core consisting of a core seat and a core body is arranged in the inner cavity; the core seat is runway-shaped and is in thread connection with the inner cavity; the core body is cylindrical and arranged on the core seat; a blind hole is formed in the top part of the core body; a first tapered surface which is in match with the sidewall of the tapered surface of the inner cavity, and at least two flow guide grooves which are arranged by staggering along the periphery of the blind hole are arranged on the top surface, around the blind hole, of the core body; one end of each flow guide groove communicates with the blind hole while the other end of each flow guide groove communicates with the inner cavity. The high-water-pressure water-mist spray head has the advantages that high-pressure water current can rotate at a high speed in the atomizing core, so that water mist can be easily thinned, and as a result, the spreading and immersing effects are improved; little water is used; water pressure at higher level can be utilized.

Description

technical field [0001] The invention relates to a nozzle used in a fire extinguishing system, in particular to a fine water mist nozzle. Background technique [0002] The water mist fire extinguishing system is a new type of automatic fire extinguishing system developed in recent years. It solves the protection problems of the fire hazard places of flammable liquids and the fire hazard places of cables and electrical appliances. The fire extinguishing effect of this nozzle is remarkable, the water loss after fire extinguishing is smaller than that of conventional nozzles, the structure is simple, and the equipment cost is lower than that of gas and foam fire extinguishing systems, and can be widely used in hydraulic stations, lubricating oil depots, turbine oil depots, Oil-immersed power transformers, diesel generator rooms, boiler rooms and other flammable liquid fire hazard places, as well as electrical fire hazard places such as cable tunnels, large cable rooms, computer ...

AI Technical Summary

Problems solved by technology

The rotary nozzle includes a base and a nozzle body connected to each other. The high-pressure water enters from the base, rotates in the nozzle, enhances its turbulence intensity, and then sprays out from the small nozzle holes on the nozzle body to achieve the atomization effect. The water pressure is usually not high, the atomization effect is not good, and the water consumption is large; the collision nozzle includes a nozzle with a firing pin inside, and the water flow in the nozzle is crushed by collision to form an atomization effect, but this method will cause The wear and tear of the equipment, the water mist generated is unevenly distributed, the diffusion is not sufficient, and the atomization effect is limited

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