Device for solving non-uniform galvanization passivation of strip steel

Abstract

The utility model belongs to the technical field of metal film forming process, and provides a device for solving uneven galvanizing passivation of strip steel, which comprises coating rollers, a strip roller, a spray pipe, a material tray, a circulating box, a liquid supply pipeline and a liquid return pipeline, the coating rollers are arranged on two sides of a strip steel moving track, the strip roller is tangent to the coating rollers and is arranged on the outer side of the coating rollers, and the spray pipe is arranged on the material tray. A spraying pipe is arranged above the material carrying roller, a material disc is arranged below the material carrying roller, a circulating box is arranged below the material disc, a liquid supply pipeline is connected between the circulating box and the spraying pipe, and a liquid return pipeline is connected between the material disc and the circulating box; according to the utility model, liquid is directly supplied to the material carrying roller through the spraying pipe, so that the liquid level in the passivating material disc can be reduced, and the defect of passivating residue caused by non-uniform passivating of a part adhered with impurities when the coating roller is in contact with strip steel due to the fact that the material carrying roller is in contact with the material disc liquid level of the material disc and the impurities in the material disc are carried onto the coating roller is prevented; the device has the characteristics of low investment, quick effect, easiness in operation and the like, and has high feasibility.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal film forming, relates to the galvanizing passivation of strip steel, and specifically is a device for solving the uneven galvanizing passivation of strip steel. Background Art

[0002] In the continuous hot-dip galvanizing production line, the strip is galvanized and then quenched in water for passivation treatment.

[0003] Passivation is generally carried out by roller coating. The liquid in the material tray is brought out by the rotation of the belt roller, and then the belt roller contacts the coating roller to transfer the passivation liquid to the coating roller. The coating roller then contacts the strip to achieve liquid adhesion to the strip. This process requires a certain liquid level to be maintained in the material tray. At the same time, since the sediment of the passivation liquid in the material tray is easy to adhere to the surface of the coating roller, the passivation of the board surface is prone to color difference defects and uneven passivation problems. Utility Model Content

[0004] The utility model aims to provide a device for solving the uneven passivation problem of strip steel galvanizing, eliminating the uneven passivation defect on the surface of the strip steel and improving the passivation effect of the plate surface.

[0005] The technical solution adopted by the utility model to achieve the above-mentioned purpose is:

[0006] A device for solving the uneven passivation of galvanized steel strip comprises a coating roller, a material roller, a spray pipe, a material tray, a circulation box, a liquid supply pipe and a liquid return pipe, wherein the coating roller is arranged on both sides of a running track of the steel strip, the material roller is arranged tangent to the coating roller and on the outside of the coating roller, a spray pipe is arranged above the material roller, a material tray is arranged below the material roller, a circulation box is arranged below the material tray, a liquid supply pipe is connected between the circulation box and the spray pipe, and a liquid return pipe is connected between the material tray and the circulation box.

[0007] The spray pipe is erected above the material belt roller through a spray bracket, a flow controller is arranged on the spray pipe, and spray holes are evenly spaced on the lower surface of the spray pipe.

[0008] The liquid supply pipeline between the circulation box and the spray pipe is provided with a liquid supply pump to supply liquid to the spray pipe. The liquid supply flow is controlled by a flow controller on the spray pipe, thereby controlling the liquid storage amount between the material roller and the coating roller.

[0009] The beneficial effects of the utility model are as follows: the spraying and roller coating passivation method is adopted to significantly improve the galvanized passivation effect of the steel strip, eliminate the uneven passivation defect on the surface of the steel strip, and solve the passivation color difference problem on the plate surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 This is a schematic diagram of the structure of the spray pipe and the material belt roller in the utility model;

[0012] In the figure, 1 is strip steel; 2 is coating roller; 3 is material roller; 4 is spray pipe; 5 is material tray; 6 is circulation box; 7 is liquid supply pipe; 8 is liquid return pipe; 9 is spray bracket; 10 is flow controller; 11 is spray hole; 12 is liquid supply pump; 13 is material tray liquid level. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings:

[0014] A device for solving uneven passivation of strip galvanizing, such as Figure 1 As shown, it includes a coating roller 2, a strip roller 3, a spray pipe 4, a material tray 5, a circulation box 6, a liquid supply pipe 7 and a liquid return pipe 8. The coating roller 2 is arranged on both sides of the running track of the strip steel 1, and the strip roller 3 is tangent to the coating roller 2 and arranged on the outside of the coating roller. The spray pipe 4 is as shown in FIG. Figure 2 As shown, a spray bracket 9 is erected above the material roller 3, a flow controller 10 is arranged on the spray pipe 4, and spray holes 11 are evenly spaced on the lower surface of the spray pipe 4; a material tray 5 is arranged below the material roller 3, a circulation box 6 is arranged below the material tray 5, a liquid supply pipe 7 is connected between the circulation box 6 and the spray pipe 4, a liquid supply pump 12 is arranged on the liquid supply pipe 7, which supplies liquid to the spray pipe 4, and the liquid supply flow rate is controlled by the flow controller 10 on the spray pipe 4, so as to control the liquid storage amount between the material roller and the coating roller, so as to ensure the uniformity of passivation; a return liquid pipe 8 is connected between the material tray 5 and the circulation box 6, which is used to recover the liquid collected in the material tray 5 into the circulation box 6 and supply it to the spray pipe 4 again.

[0015] In order to solve the problem of residual passivation of the coating roller, the utility model adopts a roller coating passivation plus spraying method to improve it. A group of spray pipes 4 are set up above the strip roller 3, which are directly connected to the passivation liquid supply circulation box 6. The spray pipes 4 directly supply liquid to the strip roller 3 to ensure that the strip roller 3 carries material evenly. At the same time, the liquid level 13 of the passivation material tray 5 can be reduced to prevent the strip roller 3 from contacting the material tray liquid level 13 of the material tray 5, and impurities in the material tray 5 are brought to the coating roller 2. When the coating roller 2 contacts the strip steel 1, the part where the impurities adhere is unevenly passivated, resulting in residual passivation defects. The device has the characteristics of low investment, quick effect, easy operation, etc., and has strong feasibility.

Claims

1. A device for solving uneven galvanizing passivation of strip steel, characterized by: It includes a coating roller, a material roller, a spray pipe, a material tray, a circulation box, a liquid supply pipe and a liquid return pipe. The coating roller is arranged on both sides of the running track of the strip steel, and the material roller is arranged tangent to the coating roller on the outside of the coating roller. A spray pipe is arranged above the material roller, a material tray is arranged below the material roller, and a circulation box is arranged below the material tray. A liquid supply pipe is connected between the circulation box and the spray pipe, and a liquid return pipe is connected between the material tray and the circulation box; the spray pipe is arranged above the material roller through a spray bracket, and spray holes are evenly spaced on the lower surface of the spray pipe. A flow controller is arranged on the spray pipe, and the liquid supply flow of the spray pipe is controlled by the flow controller.

2. The device for solving uneven galvanizing passivation of steel strip according to claim 1 is characterized in that: The liquid supply pipeline between the circulation box and the spray pipe is provided with a liquid supply pump to supply liquid to the spray pipe.

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