Patent ID: 11879172
Assignee: NIPPON STEEL CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC C | IPC C

Claim 11:
12. The chemical treatment solution regeneration apparatus according to claim 11, wherein:
the chemical treatment bath includes:
a first chemical treatment bath and a second chemical treatment bath;
the first liquid supply channel including:
a first liquid supply channel main body having two end portions on the chemical treatment bath side, a first chemical-treatment-bath-side discharge port that is formed at one of the end portions on the chemical treatment bath side of the first liquid supply channel main body and that discharges the oxalate treatment solution in the first liquid supply channel main body into the first chemical treatment bath, and a second chemical-treatment-bath-side discharge port that is formed at the other of the end portions on the chemical treatment bath side of the first liquid supply channel main body and that discharges the oxalate treatment solution in the first liquid supply channel main body into the second chemical treatment bath;
the second liquid supply channel including:
a second liquid supply channel main body having two end portions on the chemical treatment bath side, a first chemical-treatment-bath-side inflow port that is formed at one of the end portions on the chemical treatment bath side of the second liquid supply channel main body and that allows the oxalate treatment solution in the first chemical treatment bath to flow into the second liquid supply channel main body, and a second chemical-treatment-bath-side inflow port that is formed at the other of the end portions on the chemical treatment bath side of the second liquid supply channel main body and that allows the oxalate treatment solution in the second chemical treatment bath to flow into the second liquid supply channel; and
the flow mechanism further comprises:
a discharge port switching mechanism that switches whether to cause the oxalate treatment solution in the first liquid supply channel main body to be discharged from the first chemical-treatment-bath-side discharge port or from the second chemical-treatment-bath-side discharge port, and
an inflow port switching mechanism that switches whether to cause the oxalate treatment solution to flow into the second liquid supply channel main body from the first chemical-treatment-bath-side inflow port or from the second chemical-treatment-bath-side inflow port.