Spiral nozzle collector for dephosphorization before billet rolling

The invention provides a spiral nozzle collector for dephosphorization before billet rolling, which comprises water pipes, nozzles, a main pipe and 4-12 branch pipes, wherein the 4-12 branch pipes are communicated with the main pipe and annularly and uniformly assembled into frustum-shaped distribution by surrounding the main pipe, the small included angle Q1 of the outlet axial line of each branch pipe and the axial line of the main pipe on the same plane is within the range of 5-25 degrees, the nozzle is installed at the port of each branch pipe, and a plurality of nozzle outlets are uniformly distributed on a circle to form a water spray disk; and the included angle of the O direction of the outlet axial line of the nozzle and the bus M of the frustum on which the nozzle is positioned is Q2, and the angle Q2 is within the range of 5-45 degrees. The spiral nozzle collector comprises a cylindrical shell, wherein the upper end cover of the cylindrical shell is connected with the main pipe, a circular ring connected with the cylindrical shell is arranged at the lower end of the cylindrical shell, and a nozzle positioning hole is arranged on the circular ring; and the included angle between the circular ring and the cylindrical shell is matched with the included angle Q1 of the nozzle outlets.