JP2813530B2 - Vertical jet electrolyzer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical electrolytic treatment apparatus for a metal strip.

[0002]

2. Description of the Related Art As shown in FIG. 5, a vertical type processing apparatus for performing electrolytic treatment on a strip generally has a structure in which an electrolytic solution is introduced from a lower part of a processing tank and overflows from an upper part of the processing tank.

In recent years, for the purpose of increasing the efficiency of an electrolytic processing apparatus, there have been provided many structures in which an electrolytic solution introduction header is disposed immediately adjacent to an electrode inlet with respect to an electrolytic solution strip as shown in FIG. It became so.

For example, in the case of the proposal described in Japanese Patent Publication No. 3-35395, as shown in FIG. 6, an electrolytic solution is supplied between a strip and an electrode, a stirring effect is provided between the strip and the electrolytic solution, and a high current is applied. Methods for obtaining density have been proposed.

In this case, in order to equalize the liquid flow from the electrolyte introduction header in the strip width direction, the introduction points of the electrolyte into the processing tank are down-pass / up-pass and the front / rear side of the strip and the operation / drive side. Each requires a total of eight locations.

[0006]

In the electrolytic treatment apparatus proposed in FIG. 5, there is a problem that the electrolytic solution goes around the back side of the electrode and is not effectively utilized, and efficient electrolytic treatment cannot be performed.

In the electrolytic processing apparatus proposed in FIG. 6, efficient electrolytic processing can be performed, but there are the following problems.

[0008] Since the introduction header for introducing the electrolytic solution is arranged in the immediate vicinity of the electrode, pulsation and variation occur in the flow of the solution, which causes unevenness in the electrolytic treatment. Also, due to the dynamic pressure of the introduction header, a pressure difference is generated between the front and back sides of the strip, causing the strip to stick to the electrode surface, causing the strip to vibrate, and causing product flaws.

[0009] The structure of the introduction header is complicated and expensive in terms of securing accuracy.

It took a long time to attach and remove the introduction header.

In particular, when the electrode interval is changed (in order to ensure product quality, the distance between the electrodes is often changed due to the shape of the strip and the flow of the liquid), the interval between the front and back introduction headers is also increased. It had to be changed, and the structure of the plating tank had to be complicated.

In view of such problems of the prior art, an object of the present invention is to efficiently introduce an electrolytic solution between electrodes, eliminate a complicated header for introducing an electrolytic solution as in the related art, and simplify the apparatus. It is another object of the present invention to provide a vertical jet electrolysis apparatus which achieves the above.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a vertical tank for carrying out an electrolytic treatment by running a strip between electrodes disposed opposite to each other at a predetermined interval in a processing tank. In the type jet electrolysis apparatus, a rectifying plate is disposed on the lower side in the longitudinal direction of the electrode so as to face the strip, an electrode support is provided on the rectifying plate, and a partition is provided at an intermediate portion between the strip down path and the up path. At least two walls above and below the sink roll at the bottom of the treatment tank
In addition to the provision of an electrolyte inlet at a location, a cut adjustment plate that is adjustable in the height direction is provided on each of the down path and the up path on both sides of the upper part of the processing tank in the width direction.

[0014]

The rectifying plate disposed on the lower side in the longitudinal direction of the electrode so as to face the strip allows the flow of the electrolytic solution to be smoothly introduced between the electrodes, and also reduces the amount of spillage to the back side of the electrode.

The electrode support connected to the rectifying plate supports the lower part of the electrode and keeps it at a predetermined electrode interval. A partition wall disposed at the center of the strip down pass and the up pass separates the strip into a down pass side chamber and an up pass side chamber to form independent liquid flows.

The adjustment plates provided on both sides in the width direction of the up-pass and the down-pass in the upper part of the processing tank make it possible to adjust the difference between the liquid flows in the upper and lower paths in the height direction, so that the electrolyte overflows from the upper part. Balance the amount.

At least two electrolyte inlets provided above and below the sink roll at the bottom of the processing tank allow the amount of electrolyte on both sides of the strip to be adjusted.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, description will be made in accordance with an embodiment shown in FIGS. It goes without saying that the present invention is not limited to this embodiment.

FIG. 1 is a side sectional view showing an embodiment of the present invention.
2 is a view taken along the line AA in FIG. 1, FIG. 3 is a rectifying plate, and FIG. 4 is a sex adjustment plate.

As shown in FIG. 1, a current is applied to the cathode (or anode) of the strip 2 by the input conductor roll 9 and (or the output conductor roll 10), and the electrodes 3a, 3b facing the strip 2 are connected to the anode ( Or a cathode), and an electrolytic solution is introduced between the electrodes 3a and 3b to perform an electrolytic treatment.

Under the electrodes 3a, 3b, rectifying plates 4a, 4b are provided.
The electrode b is arranged and the electrolyte is introduced between the electrodes 3a and 3b, and at the same time, the liquid flow is inclined toward the electrodes 3a and 3b so as to be uniform in the plate direction. Although the inclination angle (θ) varies depending on the amount of the electrolyte introduced, it is usually 30 ° to 60 °. If necessary, although not shown, it is more effective to provide a guide plate in the width direction on the lower surface of the rectifying plates 4a and 4b.
The current plates 4a, 4b are bolted to brackets 12a, 12b provided in the width direction of the processing tank 1, and the bolt holes are elongated so as to be able to move left and right with respect to the strip path. In addition, the sizing plates 4a and 4b and the bracket 12
The gaps between a and 12b are provided with rubber-like skirts 13a and 13b below the current plates 4a and 4b.

Further, the electrodes 3 are provided on the rectifying plates 4a and 4b.
a, 3b Channel-shaped electrode support 5 holding lower part
a, 5b are bolted, and the position adjustment bolt 14
The distance between the electrodes 3a and 3b can be freely adjusted by using a and 14b.

The processing tank 1 is divided by a partition wall 8 from above and below the strip-down pass section and the strip-up pass section.

A total of four overflows of the electrolytic solution in the upper part of the processing tank 1 are provided in the width direction of each of the strip-down pass portion and the strip-up pass portion. Adjustment bolt 1
5 is used for height adjustment.

The introduction of the electrolytic solution into the processing tank 1 is performed through the electrolytic solution introduction ports 7a and 7b. The electrolyte inlets 7a and 7b are located at the center of the processing tank 1 above and below the sink roll 11, and are provided at a total of four locations on the operation side and the drive side. Also,
Although not shown, flow meters (not shown) are provided at the inlets of the electrolyte introduction ports 7a and 7b to balance the flow rates of the front side and the back side of the strip 2 and the operation side and the drive side.

[0026]

Although the embodiments have been described above, the present invention has the following effects.

(1) The electrolytic solution is less likely to flow to the back side of the electrodes, flows effectively only between the electrodes, and enables efficient electrolytic treatment.

(2) The flow of the electrolytic solution between the electrodes is free from pulsation and variations in the width direction, and does not cause product defects such as unevenness in electrolytic treatment. Further, since there is no pressure difference between the front and back of the strip, the phenomenon of sticking to the electrode and the strip does not vibrate, and there is no factor that causes product scratches.

(3) Since an electrolytic solution introduction header having a complicated structure is not required, and the structure of the processing tank is simplified, the production cost can be greatly reduced. In addition, maintenance becomes easy, and the distance between the electrodes can be easily selected.

(4) The liquid level difference between the down pass and the up pass due to the strip running is eliminated, and the liquid flow becomes uniform between the strip down pass and the up pass and between the front and back surfaces of the strip, thereby enabling a stable operation. .

(5) The number of locations for introducing the electrolyte is reduced, the piping design is facilitated, and the production cost is reduced.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention.

FIG. 2 shows an AA view of FIG.

FIG. 3 shows a current plate.

FIG. 4 shows a sex adjustment plate.

FIG. 5 is a side sectional view of a conventional electrolytic processing apparatus.

FIG. 6 is a side sectional view of another conventional electrolytic processing apparatus.

[Explanation of symbols]

 1 Processing tank 2 Strip 3a, 3b Electrode 4a, 4b Rectifier plate 5a, 5b Electrode support 6 Sec adjustment plate 7a, 7b Electrolyte inlet 8 Partition wall 9 Inlet conductor roll 10 Outlet conductor roll 11 Sink roll 12a, 12b Bracket 13a, 13b Skirt 14a, 14b Position adjustment bolt 15 Height adjustment bolt

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kiyohide Tsuchiya 46-59 Ohara Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka Nippon Steel Corporation Machinery & Plant Business Department (72) Inventor Hiroyuki Shibata Tobata-ku, Kitakyushu-shi, Fukuoka 46-59 Nakahara, Nippon Steel Corporation Machinery & Plant Division (72) Inventor Katsumi Danhara 46-59 Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka Nippon Steel Corporation Machinery & Plant Division (72) Inventor Shuji Masuda 59 Nippon Steel Plant Design Co., Ltd., 46 Oaza Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka Prefecture (56) References JP-A-61-73897 (JP, A) Jpn. JP-A-5-54554 (JP, U) JP-B 3-35395 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) C25D 7/00-7/12

Claims (1)

(57) [Claims] 1. A vertical jet electrolysis apparatus in which a strip is run between electrodes disposed opposite to each other at a predetermined interval in a processing tank to perform an electrolytic treatment, wherein a strip is provided below a longitudinal direction of the electrode. A rectifying plate is provided opposite to the rectifying plate, an electrode support is provided on the rectifying plate, and a partition wall is provided at an intermediate portion between the strip-down path and the strip-up path. At least two electrolytic solution inlets were provided in each case, and furthermore, on both sides of the upper part of the processing tank in the width direction, a strip adjusting plate capable of adjusting the height direction was provided in each of the strip down path and the up path. A vertical jet electrolysis apparatus characterized by the above.