Nozzle for atomizing water with air suitable for round billet continuous casting secondary cooling

Abstract

The invention provides a gassy water atomization nozzle which is applicable to the secondary cooling in continuous round casting and comprises the following structure: a water inletting orifice that is connected with a water pipe and an air inletting orifice that is connected with an air pipe are arranged on a base; a nozzle head comprises a water-saving flow opening that is arranged on a back cover of the nozzle head, a spout that is arranged on a front cover of the nozzle head, and a guide plate that is arranged at the middle part between the front cover and the back cover of the nozzle head, a first gassy water mixing cavity and a second gassy water mixing cavity are respectively formed between the guide plate and the water-saving flow opening as well as between the guide plate and an end face for placing the nozzle, and an upright guide post arranged inside the second gassy water mixing cavity is connected with the guide plate; the air inletting orifice is communicated with the first gassy water mixing cavity through a channel, and the water inletting orifice is communicated with the water-saving flow opening through the channel. The gassy water atomization nozzle has the advantages of realizing multiple functions of gas and water mixing, atomization and spraying, etc. by the nozzle structure, small atomization granularity, even spraying, good effect of solid cores, stableflow control and wide flow control range, etc., and simultaneously solves the problem that the nozzle inside is hard to clean, and the nozzle head is convenient for replacing, thus ensuring the spraying effect of the nozzle for a long time.

Description

technical field [0001] The invention relates to an air-water atomizing nozzle suitable for secondary cooling of round billet continuous casting in the field of metallurgical round billet continuous casting. It has the characteristics of small atomization particle size, uniform spraying, good solid effect, stable flow control, large flow control range, easy cleaning and replacement, etc. It is especially suitable for the production requirements of round blanks with specifications above φ310. Background technique [0002] The continuous casting machine in the steelmaking plant introduced the technology of German Demark company in the late 1980s. The design specifications are φ210, φ270 and φ310 round billets, and the casting radius is 10.5 meters. In recent years, due to the development of large-scale round billets such as φ350 and φ400, the production of such large-scale billets requires more accurate low-specific water volume control performance for secondary cooling, and r...

AI Technical Summary

Problems solved by technology

[0008] The effect of the invention is that the structure of the nozzle solves the problem that the atomization particle size and coverage uniformity are difficult to unify, and realizes multiple functions such as gas and water mixing, atomization, spraying, etc., and has the effect of small atomization particle size, uniform spraying, and solid effect Good, stable flow control, large flow control range, etc.

Images