Anti-dripping fine water mist spray head

Abstract

The invention discloses a fine water mist spray head, which is sealed at normal times, is started for spraying when a water feeding pressure reaches a preset value, is used for decomposing water current into fine and dense water drops of smaller than 200 mum for spraying and is shut down and sealed automatically when the feeding water pressure of the spray head falls. The spray head consists of a plurality of size nozzles and a middle nozzle; and a spring pre-fastening rubber ball body is arranged inside the spray head for sealing, so that the spray head is kept in a shut-down state. An anti-dripping fine water mist spray head belongs to the field of fire control. Damages of lightning flash, electric shock and the like caused by flowing liner water current discharged at the start of spraying and at the end of spraying existing in the conventional spray head are eliminated. The anti-dripping fine water mist spray head is provided with a pre-tightening spring, a rubber ball body, a dust-proof cover and a convex ball filter screen. The rubber ball body is closed by pre-tightening, water is not discharged under low water pressures and at the start / end stage of spraying, water discharge is started only when a preset water pressure is reached, and water is rotationally atomized and sprayed out through an atomizing core and the nozzle. The spray head has wide application prospects in the fields of electric power, petrochemical engineering, metallurgy, transportation and the like, and has unique safety on the protection of high-voltage power distribution equipment, diesel engine generator rooms, power transformers and converters.

Description

technical field [0001] The invention relates to a fine water mist nozzle used in the fire protection industry, which is usually closed and sealed, and sprayed when the water inlet pressure reaches a predetermined value, and the water flow is decomposed into fine water droplets smaller than 200um and sprayed out. The nozzle is automatically closed when the water inlet pressure is lost. , Belongs to the field of fire extinguishing, fire control and fire prevention. Background technique [0002] The current national standard GB5135.5-2003 water mist nozzle. The rated working pressure is low, 0.35MPa; the outlet is normally open; the fog droplets are relatively thick, the flow rate is relatively large, and there is no dust cover and filter screen. [0003] At present, the outlet of the nozzle is always open, and dust and corrosive harmful gases are easy to invade the nozzle and pipe network, which will damage the life of the system. [0004] Without a dust cover, the dust and ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the leakage and electric shock accidents caused by dripping water and direct-current water arrows at the beginning, end and low water pressure of conventional water mist nozzles; the problem of easy blockage of spray core and nozzle hole

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