FI67096B - KATODBASPLAOT FOER ELEKTROLYTISK RAFFINERING - Google Patents

Description

ral / i <en ANNOUNCEMENT

** (1) UTLÄGGNINGSSKRIFT 67096 ^ T ^ (51) Ky.lk.3 / h »t.CI.3 C 25 c 7/02 FINLAND — FINLAND (21) P» tenttlhakemui— Pmntugfailwf 802937. . (22) H «k« ml * p * hii — Ametoilnpd · * 18.09. 80 'Fl' (23) AlkupVvt — Glttlghetsdig 18.09.80 (41) TulhK to the Public - Bllvit offMtllg 21 .03.81

National Board of Patents and Registration „1, ___________ (44) Date of Nihtivfksipanon | a kauLfutkalsun—. Q Q.

Patent and register registration Aratttcan uthgd och uttskrifton publksrsd 28.09.8 * 1 (32) (33) (31) Claim claimed privilege — B «(ir4 prloritet 20.09.79 30.10.79, 18.07.80 Japan-Japan (JP) 1302 * 13 / 79 Utility Model, 1 * 10292/79, 98 * ι * ι5 / 80 (71) Mitsui Mining S Smelting Co., Ltd., No. 1-1, Nihonbashi-Muromachi, 2-chome, Chuo-ku, Tokyo , Japan-Japan (JP) (72) Hiroaki Matsuo, Gifu-ken, Satoshi Arita, Gifu-ken, Kiyomi Touge,

Gifu-ken, Akio-Shida, Gifu-ken, Sigenobu Yamaura, Gifu-ken,

Japan-Japan (JP) (7 * 0 Oy Kolster Ab (5 * 0 Cathode washer for electrolytic cleaning -Katodbasplat för elektrolytisk raffinering

The invention relates to a cathode washer for electrolytic cleaning, i.e. refining, in which an insulating material is placed on each side of the washer in the part of the plate into which the release device is inserted to remove the electrodeposited metal plate po. the base plate.

According to conventional electrolytic cleaning, non-ferrous or non-ferrous metals are obtained by electroprecipitation of said non-ferrous metal on a cathode washer (referred to herein as an "washer") placed in an electrolytic cell to form a cathode plate having an electroprecipitated metal plate (hereinafter referred to as "cathode plate" and electroplated metal plate "metal plate").

The metal plate is then removed from the washer by means of a release device, e.g. a wedge scraper, a knife or a similar tool, by inserting the release device between the washer and the metal plate.

Figures 1a and b are vertical and side sections of two cathode plate structures A 'and A "taken for example. In the case of such cathode plates, automatic release devices are generally used to remove the metal plate 2' or 2" from the base plate 1 'or 1 ". .

In the case of the cathode plate A ', the removal function takes place in such a way that either a mechanical impact, e.g. an impact caused by a hammer or an air pressure, is directed at the upper end of the metal plate 2'. In this case, small holes are formed in the upper edge between the base plate 1 'and the metal plate 2'. The release device (not shown) is then pushed po. between the plates vertically downwards.

However, the disadvantage of the cathode plate A 'is then that the edge line is unclear, because the edge part 3', as can be seen from the figures, forms an acute angle with the washer 1 ', which makes it difficult to push the release device into the release point.

The cathode plate A "is again obtained by forming a narrow part 6" at one point on the side edge of the base plate 1 "and placing a channel-shaped insulating material 4" po. on both sides of the paragraph. The strength of the insulation material then corresponds to the thickness of the washer 1 ”(Fig. B) or is thinner. The 2 "metal plate is then electroprecipitated on the washer.

Removal is still done by first forming small holes in the edge line between the plates 1 "and 2" (i.e. as in structure a) and pushing the release device po. and by moving the release device first horizontally and then vertically.

In the cathode plate structure b, the edge line of which is clearer than in the structure a, the release device is easier to use, but this structure has the disadvantage that the insulating material 4 "easily detaches from the washer 1" due to vibration the detachment point is even more difficult, so the success of the work requires the formation of a new insulating material in the washer.

A further disadvantage of the release devices used in structures a and b is that the washer can be damaged when a certain impact is applied to it by forming small holes between it and the metal plate. In addition, the washer may be damaged by the compressive force exerted on it by the pressing device when the disc is held in place when the release device is used, and also when the plate is held in place when the release device is used, and also when the release device is continuously pressed against the washer during the removal operation.

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Po. a further disadvantage of the release device is that it performs a rectilinear movement, whereby it has a long stroke, which is usually produced by means of a liquid cylinder. The cylinder must then, of course, be long. In order to avoid the use of a long cylinder, it is necessary to increase the short stroke by means of a respective stroke extension device comprising a rack and pinion or some other similar device. In any case, the devices then become relatively large and structurally complex.

The object of the invention is therefore to develop such an improved, long-lasting washer, by means of which it is possible to eliminate the drawbacks associated with conventional washers, whereby the removal of the metal plate can be easily performed by the respective removal device.

This is achieved by means of a washer according to the invention, characterized in that in order to attach the insulating material to the washer, a part of the insulating material is embedded in the holes passing through the washer and adapted to fill the holes substantially completely.

Other essential features of the invention are set out in claims 2-3.

The invention will now be explained in more detail by means of the preferred embodiments shown in the accompanying drawing, in which Figure 1 shows two structural examples relating to previously known washers; then Fig. a is a vertical section from the top of the second known embodiment and Fig. b is a cross-section from the side of the second known embodiment, Fig. 2 shows a washer structure according to the invention; Fig. a then illustrates the entire washer from the front and Fig. b shows a sectional view a along the line II-II, Fig. 3 shows still another washer structure according to the invention; a is a front view of the entire washer and b is a section along the line III-III in Fig. a, Fig. 4 is a partially cut-away side view and shows in principle the detachment operation in the washer of Fig. 2, Fig. 5 is a plan view taken along line V-V of Fig. 4, Figs. the relative position of the washer and the release device according to the invention during the removal operation (Fig. 4, items VI to IX),

Fig. 10 is a partially cut-away side view and shows in principle another possible detachment in the washer of Fig. 2.

Fig. 11-14 are enlarged plan views showing the relative position of the washer and the release device according to the invention during the removal operation (Fig. 10, items XI-XIV); Fig. 15 shows in principle a plan view of a third possible detachment operation in the washer of Fig. 3; 19 are enlarged plan views showing the relative position of the washer and release device according to the invention during the removal operation (Fig. 15, items XVI-XX), and Figs. 20 and 21 show in plan views (in part) two further washer structures according to the invention.

Figures 2 and 3 show a washer 1 according to the invention. The washer of Figure 2 has an insulating material 4 at the right side edge of the plate and the washer of Figure 3 in the middle at the upper end of the plate, respectively. Since the insulating material 4 is an integral part of the invention, its structure will now be described in more detail.

The insulating material 4 (line II-II in Figure 2a and enlarged section along line III-III in Figure 3a) is plastic, e.g. epoxy or polyester resin, other similar material or rubber, and is partially embedded in holes 5 drilled in the washer 2 mm to a strong part. The normal thickness of the washer is 6 mm. The insulating material 4 is placed on both sides of the thin part of the washer 1 and its total thickness (4) corresponds approximately to the strength of the plate 1. It should now be noted that reference numeral 6 denotes a conventional insulating body for keeping the metal sheets apart on both sides.

In the washer 1 thus constructed, in which the insulating material 4 is attached to both sides thereof and connected together by means of parts embedded in the holes 5, it cannot fall off the washer 1 due to impact or corrosion.

When such a washer 1 is used, the edge part 3 of the metal plate 2 is obtuse (or upwards) with respect to the washer 1 (Fig. B), where po. a wedge-shaped gap C is formed between the plates into which the release device can be inserted.

In order to explain the advantages of the invention, the removal of the metal plate 2 from the base plate 1 in which the above-mentioned insulating material 4 is placed will be described in more detail by means of examples.

The processing device shown in principle in Figures 4-9 comprises a support rack 27 and a release device 15 in which the washers 1 of Figure 2 are placed.

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The cathode plates 2, in which there is a metal plate 2 on each side of the washer 1, are arranged in a series of about 10 plates by means of a lifting or similar device and are suspended from the beam 21 at regular intervals (rack 27).

The release device 15 is arranged laterally opposite the cathode plate A and comprises a pair of scrapers 8, 8 'placed on each side of the base plate 1 and further po. a scraper drive cylinder 19 and a guide plate 7 which keeps the scrapers 8, 8 'apart.

The scrapers 8 and 8 'are supported as a pivoting structure at their lower ends on a support part 9 fixed to the bracket 27 by a pin 14. At the upper ends of the scrapers, wedges 10 and 10' are placed against the insulating material of the washer 1. The scrapers can be made of, for example, a flat spring and they tend to move close to each other. Therefore, they are designed so that the wedges 10 and 10 'lock to each other when they are not subjected to external forces. The cylinder is supported as a pivoting structure by means of a pin in the protrusion 11; the projection is in turn fixed to the holder 27. The end 13 of the piston rod pivots in the base plate of the scrapers 8 and 8 'by means of a pin 14. The guide plate 7 is attached at its lower end to the bracket 27 and is in the middle of the scrapers on the cylinder 19 and comprises higher front and rear parts 16, 16 'and 17, 17' and lower middle parts 18, 18 '.

With reference to Figures 6-9, po. device disconnect function. The state of the scrapers 8 and 8 'in the positions shown in points VI to IX of Figure 4 is seen successively in Figures 6-9, in which the letters a and b denote po in each. in the figure, the mutual positions of the wedges 10, 10 'and the washer 1 and the mutual positions of the corresponding parts of the scrapers 8, 8' and the guide plate 7.

When the washer 1 according to the invention is supported in the predetermined position shown in Fig. 4, the scrapers 8 and 8 'are in position VI, whereby they remain (Fig. 6b) apart by means of the higher parts 17 and 17' of the guide plate 7 so that the wedges 10 and 10 ' the distance may be greater than the strength of the washer 1. The scrapers 8 and 8 'then do not touch the insulating material 4.

At this point, the cylinder 19 is started and moves the scrapers 8 and 8 '. When at point VII in Fig. 4, they move to the lower parts 18 and 18 'of the guide plate 7 (Fig. 7b) and are compressed by their spring force, the wedges 10 and 10' adhering to both sides of the washer> 1 (1, / insulating material 4 (Fig. 7a ).

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When the scrapers 8 and 8 'are then in the position VIII shown in Fig. 4, the wedges 10 and 10' (Fig. 8a) pass through the wedge-shaped opening C in the metal plate 2 and protrude between the metal plate 2 and the base plate 1, starting to remove the metal plate 2 from the base plate 1. The removal operation then continues as the wedges 8 and 8 'move along the lower parts 18 and 18' of the guide plate 7 (Fig. 8b).

When the wedges 10 and 10 'have detached the po. the plates from each other and when the scrapers 8 and 8 'are approximately in the position IX of Fig. 4, they engage the higher parts 16 and 16' of the guide plate 7 (Fig. 9b), and thus move apart. The wedges 10 and 10 'are at this stage detached from each surface of the washer 1. The disconnect function then continues in this position.

During the removal operation, the wedges 10 and 10 'move in a curved path, the pin 14' then being its center (shown by the arrow). When the wedges reach the position X in Fig. 4, the removal operation ends.

Next, another possible detaching function will be described, which is shown in Figs. 10 to 14. The same parts have the same reference numerals, so now only the operation of the parts different from the first detaching operation will be described.

The scrapers 8 aj 8 'are made of a flat spring, so they are easily separated from each other. Thus, the wedges 10 and 10 'are normally detached from the washer 1 according to Fig. 2.

The guide plates 7 and 7 'are placed outside the scrapers 8 and 8' on the rack 27 and have inner parts 16 and 16 'at their inner ends and lower parts 18 and 18' at the rear parts (Figs. 11 to 14).

The removal operation with the device according to this structure will be described mainly with reference to Figs. 11 to 14.

In Figures 11-14, the letters a and b denote the relative positions of the wedges 10, 10 'and the washer 1 and the relative positions of the respective parts of the scrapers 8, 8' and the guide plates 7, 7 ', respectively. The scrapers 8 and 8 'are now in the positions shown in Figures 10 to XIV.

When the washer 1 is supported in a predetermined position of the support 27 (Fig. 10), the scrapers 8 and 8 'are at point XI, whereby they are separated from each other (Fig. 11b). Their higher parts 23 and 23 'are then close to the lower parts 18 and 18' of the guide plates 7 and 7 ', so that the distance between the wedges 10 and 10' is greater than the strength of the washer 1. The wedges are now detached from the insulation material 4.

At this point, the cylinder 19 is started and moves kaaa. . <«'' Black 8 and 8 '. When they reach the position XII in Fig. 10, their higher portions 23 and 23 'move towards the higher portions 16 and 16' of the guide plates 7 and 7 '(Fig. 12b). The spring force now compresses them closer to each other, whereby the wedges 10 and 10 'adhere to each surface of the insulating material 4 of the washer 1 (Fig. 12a) and slide towards the metal plate 2.

After the scrapers 8 and 8 'enter point XIII in Fig. 10, the wedges 10 and 10' (Fig. 13a) protrude between the metal plate 2 and the washer 1, whereby the removal operation begins and continues as the higher parts 23 and 23 'of the scrapers 8 and 8' move to the guide plates 7 and 7 '. along the higher portions 16 and 16 '(Fig. 13b).

When the wedges 10 and 10 'perform the removal function po. in the position and when the scrapers 8 and 8 'enter approximately the position XIV of Fig. 10, their higher parts 23 and 23' (8 and 8 ') detach from the higher parts of the guide plates 7 and 7' (Fig. 14b). The scrapers are then again separated from each other, and the wedges 10 and 10 'are detached from the surfaces of the washer 1. The disconnect function then continues in this position.

During the removal operation, the wedges 10 and 10 'move in a curved path, the pin 14' then being its center, i.e. in a manner corresponding to the first structure. When the wedges have entered point XV in Fig. 10, the removal operation ends.

The third possible removal operation shown in Figs. 15 to 19 will now be described. The washer 1 of Fig. 3 should now be referred to as a vertical plate. However, the washer of this construction corresponds in many respects to the washer of the previous construction, so the same parts are used by the same reference numerals. Also, the description is limited to parts that differ from the second structure.

The handling device of Fig. 15 further comprises a chain conveyor 29 to which the lower end of the washer 1 is attached, a support device comprising guide rods 30 on each side of the beam 21 of the washer 1, and a release device 15 '.

The washer 1 is moved to the release position so that the conveyor 29 supports its lower edge and the guide rods 30 are attached to each side of the beam 21. The release device 15 'is opposite the washer 1 and comprises a pair of scrapers 8, 8' located on each side of the washer 1. In addition, the release device has a cylinder driving the scrapers 8, 8 'and two guide plates 7, 7' for holding the scrapers 8, 8 'apart. The scrapers in this structure are also springs and thus tend to move apart. If they are not subjected to an external force, the wedges 10 and 10 'are detached from the washer 1.

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Reference numeral 28 denotes a guide frame of a bracket 27 comprising a cylinder 19 '. The guide plates 7, 7 '(Fig. 15) located outside the scrapers 8 and 8' in the holder 27 via the support rod 31 (Figs. 16 to 19) are provided with parts 16 and 16 'higher at the lower ends and low parts 18 and 18' at their upper ends, respectively.

The removal function will now be described in more detail with reference to Figures 16 to 19. In them, the letters a and b denote the relative position of the wedges 10, 10 'and the washer 1 and the respective parts of the scrapers 8, 8' and the guide plates 7, 7 ', respectively. - IXX.

Em. the function differs from the previous function in that the scrapers 8, 8 'move linearly vertically. The baffles 7, 7 'act on the scrapers 8, 8' po. however, in structures in exactly the same way, so this function is no longer described.

Although some preferred device structures related to the invention have been exemplified above to illustrate the matter, it will be apparent that various structural changes may be made therein within the scope of the appended claims.

In this connection, it should also be noted that the washers 1 shown in Figs. 20 and 21 have a different shape of insulating material 4, and that the use of the cylinder as the drive device in question and the control plate as the control device has been described above. Po. however, other devices guaranteeing equivalent performance may be used for these purposes.