Patent ID: 9321147
Filing Date: 2016-04-26
CPC Classification: B21B,B24C

Claim Text:
1. A descaling device comprising: a device housing disposed in a feed path of a hot-rolled steel strip; a high-pressure fluid supply unit provided to supply a high-pressure fluid to the device housing; an abrasive input unit provided to introduce an abrasive into the device housing; an abrasive slurry spraying unit provided in the device housing to spray an abrasive slurry having the high-pressure fluid and the abrasive mixed inside the device housing onto the steel strip; and a mixing unit provided in the device housing to allow the high-pressure fluid and the abrasive to be smoothly mixed therein, wherein the device housing comprises: a first connecting portion connected to the high-pressure fluid supply unit; a second connecting portion connected to the abrasive input unit; and a spraying unit assembly portion having the abrasive slurry spraying unit assembled therein, wherein the high-pressure fluid supply unit comprises: a high-pressure fluid inlet provided inside the first connecting portion included in the device housing and having the high-pressure fluid supplied thereto; and a high-pressure fluid nozzle provided to the high-pressure fluid inlet and having a nozzle hole formed therein to inject the high-pressure fluid into the inside of the device housing, wherein a horizontal line at a lower end of the high-pressure fluid nozzle passes through a center point of an outlet of the inclined second connecting portion included in the device housing, and wherein the mixing unit is provided as a fixed-type mixing unit formed of one or more grid units and one or more conical coils provided between the high-pressure fluid supply unit and the abrasive slurry spraying unit.