JPS58151494A - Adjuster for spacing between electrodes in radial cell type electrolytic cell - Google Patents

Abstract

PURPOSE:To correct easily the irregular spacing between electrodes occuring in the abrasion of electrode supports and to prevent short circuiting accidents, etc., by placing the electrode supports which hold consumable electrode pieces on tiltable supporting troughs and fixing the supporting troughs to stationary receiving bases by means of adjusting screws. CONSTITUTION:Many consumable pieces 3' which are opposed to each other by way of electricity conducting gaps are held on a rotary drum 1 for conduction of electricity are held on the placing surfaces 6 of electrode supports 5, and the electrodes 3' are moved and renewed successively forward. In such radial type electrolytic cell, the supports 5 are placed on supporting troughs 8 in the bottom of the cell, and are screwed to stationary receiving bases 9 by means of adjusting belts. The bases 9 are suspended and held by tilting lifts 11 of which the grades are adjustable with adjusters 10. The troughs 8 are rotated by the operation of the adjusting bolts to correct the inclination of the surfaces 6 of the supports 5, whereby the irregular gaps for conduction of electricity at both top and bottom ends of the electrodes 3' are eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrode spacing adjustment device for a radial cell type electrolytic cell, and in particular to an electrode spacing adjustment device for a consumable electrode in an electrolytic cell that is successively updated to compensate for a decrease in wall thickness due to elution in an electrolytic solution. Irregularities in the current carrying gap caused by wear on the consumable electrode mounting surface of the electrode support, which maintains the mounting position and guides the progressive movement during renewal while transmitting and conducting large currents for electrolysis. The present invention is intended to provide a pole spacing adjustment device that can easily compensate for this.

In general, a radial-kil type electrolytic cell is designed to be suitable for electrolytic operation at high speeds and therefore with high efficiency, such as in a continuous galvanizing line for metal strips such as cold-rolled sheets. A rotating drum for energization with a large outer diameter is immersed in the plating solution at the bottom of the tank, and a metal strip is introduced into and out of the electrolytic tank via a deflector roll outside the tank, and then taken out. The metal strip is wound around the outer periphery of the energizing rotating drum so as to run it submergedly, and during that time, a metal strip is placed facing the energizing rotating drum in the radial direction with a energizing gap between it and the gold strike IJ knob. Must be placed anode (
It is used to pass an electric current through a glittering liquid (anonide).

In this case, since electrolysis is performed only on one side of the metal IJ tube, it may be advantageously suited for so-called single-sided plating, where only one side is plated and the other side is left untreated. One of the special features of this type of large-scale facility is KT.
In the end, an extremely large amount of power is input, so it is essential to keep the above-mentioned energization gap as small as possible in order to reduce and suppress reactive power consumption.

By the way, in ordinary electroplating, there are cases where insoluble electrodes are used as wires and anodes, and cases where the metal to be plated is used as soluble electrodes. It is convenient because it can be expected to constantly replenish the plating metal components, and there is little gas loss on other surfaces, so it is particularly suitable for applications where a large current is applied to thicken the plating.

However, in this case, as the anode plating progresses, the current carrying gap gradually expands as the anode plating progresses, and the current carrying gap gradually expands as the current carrying resistance increases, and as a result, the number of plated 7#I particles gradually decreases. become. Therefore, in the above-mentioned plating method using a soluble electrode, it is necessary to sequentially correct the expansion of the current conduction gap in response to wear of the electrode over time.

Conventionally, in order to correct this energization gap sequentially, a large number of consumable electrode pieces each having an arcuate shape and partially surrounding the energizing rotating drum in the electrolytic cell can be moved sequentially along the cylindrical generatrix of the energizing rotating drum. are lined up side by side, and this sequential movement is guided by a guide with a slope so that the consumable electrode piece approaches the energizing rotating drum for each pinch, and this guide also moves the consumable electrode piece It is also useful for supplying power to the entire anode consisting of a group of This plan P3 is called an electrode support.

Therefore, new consumable electricity ik is installed on one side of the energizing rotating drum.
In addition, the anode is sequentially updated with correction of the energization gap by sequentially moving the consumable electrodes, including the procedure of attaching and detaching worn out consumable electrodes from the other side.

In addition, the electrode support is usually made of a wire or a rectangular shape with a fairly large diameter to meet the requirements for this type of equipment, such as not being attacked by the housing fixing liquid, having a small overvoltage, and being inexpensive. It is said to mainly consist of a graphite rod with a cross section (Y460 x 4IOM) K molded, but since the above anode renewal was done to #l11111, it caused wear on the consumable electrode mounting surface, making it a mere machine. In addition to this, the anode is strongly promoted by small-scale arc discharge between the consumable electrode and the consumable electrode on the carcass mounting surface, as well as by local overcurrents, and as a result, the anode is energized near the bottom of the electrolytic cell. As the gap widens, it approaches the energized rotating drum near the upper end near the electrolyte bath surface, and if left as is, there is a risk of a short circuit accident.

Efforts are being made to develop the material of the electrode support, especially its wear resistance, but since the conditions of use are particularly severe, the consumable electrode mounting surface must be We believe that wear of the electrode support is rather unavoidable, and therefore, the present invention aims to improve the axis of the electrode support by using an opportunity such as regular inspection of the electrolytic cell to remove the wear of the mounting surface after a certain period of use. Instead, we have developed a convenient means that can adjust the tactile motion, thereby solving the above problems.

This invention relates to a radial cell type electrolytic cell, as typified by the electrolytic galvanizing described above, in which an electrode support is rotated on a fixed pedestal so that the consumable electrode mounting surface can be tilted around the electrode support. The method of repairing irregularities between electrodes due to wear of the electrode support is to place the electrode support on a support trough and fix the support top to a fixed pedestal with screws using 1II11 node bolts.

Now, Fig. 1 shows the arrangement inside the tank of the radial cell type glaze plating device according to the present invention. 8 is a metal strip on the bath surface F of the electrolytic solution which is omitted for the sake of illustration. The anode is shown consisting of a side-by-side group of matching consumable electrode pieces 8'.

The anode 8 is normally connected to the energizing rotating drum 1 as shown in the figure.
The metal strips are placed opposite each other in the direction in which the metal strips pass through the heat soaking plate, as indicated by arrows in the figure, with the center of the axis of the electrolytic cell in between. At the bottom,
A pair of electrode sabots fixed parallel to the above axis)B
At the top, the consumable electrode piece 8' is locked so that it can be moved sequentially along the axial direction of the electrode support b. This consumable electrode piece 8' is made of zinc casting and has an arcuate shape as a whole.

The electrode support 5 has an electrode mounting surface 6 that supports the 70-sided tube directly below the protrusion number of the consumable electrode 8'.

As described above, the anode 8, which is held across the upper edge of the electrode support 6, is electrolyzed on each side of the current-carrying rotating drum, and the consumable electrode is placed in the tank. The anode 8 is refilled with new 3#1゜, and the pusher 7 applies thrust to move the fully consumable electrode 8' in order, and the scrap 8'' of the consumable electrode pushed out by this is taken out of the tank. The electrode support 5 is updated so as to compensate for wear and tear due to use over a certain period of time, and the electrode support 5 is progressively fed so that the width of the consumable electrode 8' is one pitch with respect to the generatrix of the energizing rotating drum. The support trough 8 at the bottom of the tank is installed in an installation position with a slope corresponding to the ratio of the total consumption of the consumable electrode 8' to the anode arrangement width in the trench where the new consumable electrode 8' becomes a scrap product 8'' due to repeated movement. This support trough 8 is held on a fixed pedestal 9.

In this example, the fixed pedestal 9 is suspended in the electrolytic cell with an inclined lifting platform 11 so that the above-mentioned slope can be adjusted by an adjustment device 1111O installed at both ends outside the X-cell. It is an inclined lift guide.

In addition, in the figure, the bearing of the IJ3V1 rotating drum for energization, 14 is the drive motor, 15 is the reducer, 16 is the current collection ring for energization, and 17
18 is a cathode busbar, 18 is an electrode sabot (5), 19 is an anode busbar, and 20 is a rectifier.

Now, in this invention, the support trough 8 is formed with a special V groove upward as shown in FIGS. The core material 21 of the L-beam steel is coated with a necessary corrosion-resistant coating, such as a rubber lining 22, and the housing 9 is also covered with a core material 2BK with a bridge-shaped cross section or a rubber lining 14t with the same structure as the core material 2BK with a bridge-shaped cross section. −
give

support), 978 has the mmfth near its ends, respectively.
As shown in O, f→, a pair of arcuate protrusions 25 along the bridge-shaped cross section of the fixed pedestal 9 are protruded from the lower surface, and these are also covered with rubber gs to form a support trough 8t% electrode support. 5
Each arcuate protrusion piece 250 is made to be rotatable around the axis of the arcuate protrusion piece 250, and both ends of each arcuate protrusion piece 250 are combined with the supporting top 78 near its upper edge. It is made longer than the width of sIO, and a pair of bolt holes 8mm are drilled in it, and - the blade fixing pedestal 9 is provided with a pair of protruding tabs 28 that sandwich each arcuate protrusion piece s6, and the notches are provided. In 89,
Lock the adjustment bolt 80 as shown in Figure 2 (cx),
The support trough 8 is screwed and fixed in the mu position by a nut 81. In addition, 82 in the figure is a reinforcing core material of the fixed pedestal 9.

With the above configuration, the mounting surface 6 of the electrode support 5 is placed on the second
As shown by the phantom line 6' in Figure (a), wear 1. In this case, the support trough can be tightened by loosening the inner adjustment bolt 80 shown on the right side in Figure 2 (b) and tightening the outer adjustment bolt 80 also shown on the left side. 8 in the direction of the arrow 88 to repair the inclination of the worn mounting surface 6' of the electrode support 6 and return it to the position of 6. In other words, the current carrying gap at both the upper and lower ends of the consumable current δ' is You can easily resolve differences with kindness.

Therefore, according to the present invention, the anode consisting of a consumable electrode piece in a radial cell type 111 cM tank is updated sequentially according to its consumption. History while the demolition operation is in full operation! fjr operation, consumable ilE Accidents caused by uneven conduction gaps at both upper and lower ends of the consumable electrode piece due to uneven wear that inevitably occurs on the mounting surface of the electrode support due to the backward movement of the pole piece along the electrode support. This can be easily and reliably prevented.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the internal arrangement of a radial cell type electrolytic cell. FIGS. a sectional view, 2) is b-
b is a projection view. l... Rotating drum for energization, 2... Metal strip,
a...Anode, 8'...Consumable electrode piece, 3"...
New item, Hatake 7... Scrap item, 5... Electrode support, 6...
・Placement direction, $...Support trough, 9...Fixed pedestal, a
O...adjustment bolt. 4I Applicant Kawasaki Steel Co., Ltd.

Claims (1)

[Claims] 1. A large number of arch-shaped rotary drums, each having an arcuate shape, face each other with a current-carrying gap between them and the wrinkled metal strip in the radial direction of the rotating drum for energizing, which controls the submerged passage of the metal strip in a tank filled with electrolyte. The consumable electrode pieces are held by an electrode support having a mounting iii arranged side by side so that they can be moved sequentially along the cylindrical generatrix of the rotating drum for energization, and the electrode support is , around which the consumable electrode is placed on a rotatable support trough on a fixed pedestal so that the tilting of the mounting surface of the consumable electrode can be adjusted, and this support trough is screwed and fixed to the fixed pedestal with an adjustment bolt. Electrode spacing adjustment device for cell-type electrolytic cells.