APPARATUS FOR IMPROVING COOLING EFFECT OF COOLING WATER BY MOVING SPRAY NOZZLES ACCORDING TO DIAMETER CHANGE OF VERTICAL ROLL WHEN COOLING VERTICAL ROLL IN ROLLING MILL

摘要

PURPOSE: To provide an apparatus for cooling vertical roll in rolling mill, wherein the apparatus not only improves cooling efficiency by constantly maintaining a distance between the vertical roll and spray nozzles, but also prevents interference and collision of cooling water by arranging the spray nozzles diagonally. CONSTITUTION: The apparatus comprises housings(11) respectively installed in an upper part of supports(10) at both sides of a vertical roll; a cylinder(20) installed inside the housings; a spray head(30) moved adjacently to the vertical roll by the cylinder; a plural spray nozzles(31) installed inside the spray head; a valve(41) for selectively cutting off a cooling water supply pipe(40) connected to the spray nozzles; and guiding rolls(32) installed on upper and lower parts of the spray head such that the guiding rolls are contacted with an outer diameter portion of the vertical roll.