Device for controlling Fe < 2 + > concentration in phosphating solution

The invention discloses a device for controlling Fe < 2 + > concentration of a phosphating solution. The device comprises an oxidation reaction device, a phosphating tank body, an overflow pipe and awater pumping device, and the oxidation reaction device is used for removing Fe < 2 + > in the oxidized phosphating solution. The oxidized phosphating solution flows into the phosphating tank body through the overflow pipe, and the phosphating solution containing Fe < 2 + > in the phosphating tank body flows into the oxidation reaction device through the water pumping device; the phosphating solution containing Fe < 2 + > in the phosphating tank body is introduced into the oxidation reaction device to complete the reaction, so that the continuous production of the phosphating process is not influenced; and phosphated residues generated in the removal process are also remained in the oxidation reaction device, so that the quality problem caused by the phosphated residues is avoided. 本发明公开了一种磷化液控制Fe2+浓度的装置，包括氧化反应装置、