Cooling Apparatus

Abstract

A cooling apparatus includes a convoying unit and a spraying unit. The convoying unit includes a base and a plurality of rollers. The base includes a feeding end and a discharging end in which a convoying direction extends from the feeding end to the discharging end. The rollers are arranged on the base. Each roller includes a convoying portion. The convoying portion has a diameter which reduces from two ends to a center thereof. Each roller includes a shaft. The shaft has an axle direction which is at a diverted angle to the convoying portion. The diverted angle is 15° to 90°. The spraying unit includes at least one nozzle unit arranged between the feeding end and the discharging end. In this arrangement, a cooling operation can be performed on a rod-shaped steel material that is moving and rotating at the same time, attaining uniform and fast cooling effect.

What is claimed is: 
     
         1 . A cooling apparatus comprising:
 a convoying unit comprising a base and a plurality of rollers, wherein the base comprises a feeding end and a discharging end, wherein a convoying direction extends from the feeding end to the discharging end, wherein the plurality of rollers is arranged on the base, wherein each of the plurality of rollers comprises a convoying portion, wherein the convoying portion has a diameter which reduces from two ends to a center of the convoying portion, wherein each of the plurality of rollers comprises a shaft, wherein the shaft has an axle direction which is at a diverted angle to the convoying portion, wherein the diverted angle is 15° to 90°; and   a spraying unit comprising at least one nozzle unit arranged between the feeding end and the discharging end of the base.   
     
     
         2 . The cooling apparatus as claimed in  claim 1 , wherein the diverted angle is 45°. 
     
     
         3 . The cooling apparatus as claimed in  claim 1 , wherein the axle directions of the plurality of rollers are parallel to each other. 
     
     
         4 . The cooling apparatus as claimed in  claim 1 , wherein the convoying unit further comprises a driving motor connected to the shafts of the plurality of rollers via a linking unit. 
     
     
         5 . The cooling apparatus as claimed in  claim 1 , wherein the convoying portion has an outer face in a form of a concave curved face. 
     
     
         6 . The cooling apparatus as claimed in  claim 5 , wherein the convoying portions of the plurality of rollers form a conveying axis at one side of the convoying portions away from the base, wherein the conveying axis is parallel to the convoying direction. 
     
     
         7 . The cooling apparatus as claimed in  claim 6 , wherein each of the at least one nozzle unit comprises a plurality of nozzles, wherein each of the plurality of nozzles has an opening facing the conveying axis. 
     
     
         8 . The cooling apparatus as claimed in  claim 7 , wherein the plurality of nozzles is arranged in an inclined manner between the feeding end and the discharging end. 
     
     
         9 . The cooling apparatus as claimed in  claim 7 , wherein each of the plurality of nozzles has a flow reflection direction not parallel to the convoying direction. 
     
     
         10 . The cooling apparatus as claimed in  claim 9 , wherein there is an ejection angle between the flow reflection direction and the convoying direction, wherein the ejection angle is between 20° and 80°. 
     
     
         11 . The cooling apparatus as claimed in  claim 7 , wherein each of the at least one nozzle unit comprises three nozzles surrounding the conveying axis in an even angle of 120°. 
     
     
         12 . The cooling apparatus as claimed in  claim 7 , wherein each of the at least one nozzle unit comprises six nozzles surrounding the conveying axis in an even angle of 60°. 
     
     
         13 . The cooling apparatus as claimed in  claim 1 , wherein the spraying unit further comprises a support coupled with the base of the convoying unit, wherein the at least one nozzle unit is arranged on the support.