Pickling device of crude foil engine

Abstract

The utility model discloses a pickling device for a crude foil engine, which comprises a spray pipe component, and the spray pipe component comprises a first spray pipe and a second spray pipe which are externally connected with a spray liquid supply device; a first nozzle is arranged on the first spraying pipe, and the first nozzle is an atomizing nozzle directly facing the roller surface of the cathode roller; a second spray nozzle is arranged on the second spray pipe, the second spray nozzle is a fan-shaped pressurizing spray nozzle, and fan-shaped liquid flow sprayed by the fan-shaped pressurizing spray nozzle is tangent to the roller surface of the cathode roller; the first spraying pipe and the second spraying pipe are arranged at the lower part of the same side of the horizontal axis plane of the cathode roller; in the rotating process of the cathode roller, surface spraying operation is conducted on the cathode roller through the first nozzle, and then surface spraying operation is conducted through the second nozzle. The surface of the cathode roller of the crude foil engine can be effectively cleaned, the quality of rough electrolytic copper foil is improved, the use frequency of the polishing brush is reduced, the operation and maintenance cost is reduced, and meanwhile the finished product quality of the copper foil is improved.

Description

Technical Field

[0001] The utility model belongs to the field of structural accessories of a copper foil generator in electrolytic copper foil equipment, and particularly relates to an acid pickling device for a copper foil generator. Background Art

[0002] Electrolytic copper foil is one of the key raw materials for the manufacture of electronic circuits and lithium batteries, playing an important role in signal and power transmission. During the preparation process of electrolytic copper foil, the electrolytic copper foil generator plays a crucial role. The generator consists of core components such as a cathode roller, an anode tank, a drive-level control system, a rectification system, a conductive system, a liquid supply pipeline, and a water supply pipeline. The generation of copper foil is essentially a process of electrodeposition crystallization of copper ions on the surface of the cathode roller.

[0003] At present, the cathode roller in the prior art is prone to generating an oxide layer when contacting with air during the electrolytic copper foil production process. In addition, during the long-term electrolysis process, a certain amount of oxides, impurities, and unreacted copper powder will inevitably adhere to the surface of the cathode roller. If the adherents are not cleaned in time, the surface of the copper foil formed by crystallization on the cathode roller surface will have appearance defects such as oxidation and white spots, directly affecting the surface quality and production efficiency of the copper foil. At present, the cleaning of the aforementioned adherents is mainly carried out by polishing brushes. The defect of this method is that the cleaning process is likely to cause secondary damage to the surface of the cathode roller, affecting the flatness and service life of the cathode roller.

[0004] Therefore, if a protective acid pickling treatment can be carried out on the surface of the cathode roller during the production stage to reduce the generation rate of adherents, the cleaning frequency of the polishing brush can be effectively reduced, thereby achieving long-term protection of the cathode roller surface and high-quality continuous production of electrolytic copper foil. Summary of the Utility Model

[0005] The technical problem solved by the utility model is to provide an acid pickling device for a copper foil generator, which can be used to solve the defects in the above technical background.

[0006] The technical problem solved by the utility model is realized by adopting the following technical solutions:

[0007] An acid pickling device for a copper foil generator includes a spray pipe assembly. The spray pipe assembly includes a first spray pipe and a second spray pipe, with the first spray pipe on top and the second spray pipe below. The first spray pipe is provided with a plurality of first nozzles along its length direction. The first nozzles are atomizing nozzles, and the atomizing nozzles are directed at the surface of the cathode roller. The second spray pipe is provided with a plurality of second nozzles along its length direction. The second nozzles are fan-shaped pressurized nozzles, and the fan-shaped liquid flow ejected by the fan-shaped pressurized nozzles is tangent to the surface of the cathode roller.

[0008] The first spray pipe and the second spray pipe are externally connected to a spray liquid supply device.

[0009] The first spray pipe and the second spray pipe are arranged on the same side of the lower part of the horizontal axis plane of the cathode roller through brackets, and the arrangement directions of the first spray pipe and the second spray pipe are parallel to the roller shaft of the cathode roller; during the rotation of the cathode roller, it first passes through the first spray pipe, and after the surface spraying operation of the cathode roller is carried out through the first nozzle, the surface spraying operation of the second nozzle is carried out through the second spray pipe.

[0010] As a further limitation, both the first spray pipe and the second spray pipe are made of stainless steel pipes or corrosion-resistant alloy pipes to ensure long-term stable operation in an acidic environment.

[0011] As a further limitation, the bracket is an adjustable bracket, including a swivel base and a first telescopic rod bracket and a second telescopic rod bracket assembled on the swivel base. The first spray pipe is assembled and connected to the swivel base through the first telescopic rod bracket, and the second spray pipe is assembled and connected to the swivel base through the second telescopic rod bracket;

[0012] The first telescopic rod bracket and the first spray pipe, and the second telescopic rod bracket and the second spray pipe are assembled and connected through a detachable assembly structure, and the detachable assembly structure is preferably an annular buckle or a detachable hoop.

[0013] As a further limitation, the concentration of the acidic spray liquid used in the first spray pipe is greater than the concentration of the acidic spray liquid used in the second spray pipe.

[0014] As a further limitation, the distance between the first spray pipe and the second spray pipe is such that when the cathode roller rotates, the spraying interval between the two is between 10 and 45S.

[0015] As a further limitation, an electric heating unit for heating and insulating the spray liquid is also provided in the spray liquid supply device.

[0016] As a further limitation, the acidic spray liquid used in the spray liquid supply device is dilute sulfuric acid or dilute hydrochloric acid.

[0017] As a further limitation, the device uses a spray liquid circulating filtration system as the spray liquid supply device. The first spray pipe and the second spray pipe are respectively connected to the spray liquid circulating filtration system, and the acidic cleaning liquid is provided for the first spray pipe and the second spray pipe through the spray liquid circulating filtration system;

[0018] The spray liquid circulating filtration system includes a liquid receiving tray, a liquid storage tank and a filter. The liquid receiving tray, the liquid storage tank and the filter form a complete circulation loop through a circulating pipeline with a pump body;

[0019] A spray liquid concentration sensor is arranged in the liquid storage tank, and a concentration compensation device matched with the spray liquid concentration sensor is arranged.

[0020] Beneficial effects: The present utility model relates to an acid pickling device for a copper foil making machine. Through the collaborative work of the first spray pipe and the second spray pipe in the spray pipe assembly and the equipped nozzles of different types, the device performs two-stage acid pickling operation on the surface of the cathode roller. Through continuous and stable acid pickling treatment, it can effectively remove the slight oxides and impurities on the surface of the cathode roller, greatly slowing down the accumulation rate of the attachments on the roller surface; at the same time, it also has a better treatment effect on the oxide layer on the surface of the cathode roller, effectively extending the interval period of cleaning by the polishing brush and significantly reducing the mechanical wear of the polishing brush on the surface of the cathode roller;

[0021] During the acid pickling operation, the acid pickling device for the copper foil making machine can effectively avoid the risk of roller surface damage caused by the direct impact of high-concentration acid solution, and at the same time solve the problem of insufficient cleaning power caused by low-concentration acid solution. It can not only ensure high cleaning performance and reduce operation and maintenance costs, but also take into account the protection of the surface of the cathode roller, and indirectly improve the qualification rate and market competitiveness of copper foil products. Brief description of the drawings

[0022] Figure 1 It is a schematic diagram of a preferred embodiment of the present utility model.

[0023] Figure 2 It is a schematic structural diagram of the assembly seat in a preferred embodiment of the present utility model.

[0024] Wherein: 1. Cathode roller body; 2. Cathode roller surface; 3. First nozzle; 4. First spray pipe; 5. Assembly seat; 6. First telescopic rod frame; 7. Rotating seat; 8. Second spray pipe; 9. Second nozzle; 10. Threaded fastener; 11. Hoop; 12. Fine adjustment rotating seat towards; 13. Assembly seat base; 14. Coarse adjustment rotating seat towards; 15. Pipe connection seat; 16. Quick connector. Specific embodiments

[0025] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below with reference to specific drawings.

[0026] Refer to Figure 1 、 Figure 2 A preferred embodiment of an acid pickling device for a copper foil making machine. In this embodiment, the acid pickling device for the copper foil making machine is used to clean and protect the surface of the cathode roller to maintain high efficiency and high quality in the production process of electrolytic copper foil. Before cleaning, it is necessary to first arrange the first spray pipe 4 and the second spray pipe 8 in the spray pipe assembly by using the rotating seat 7, and then, when the first spray pipe 4 and the second spray pipe 8 are connected to the spray liquid supply device and the cathode roller body 1 of the cathode roller is driven at a suitable speed, use the acidic spray liquid to perform acid pickling treatment on the cathode roller body 12 of the cathode roller.

[0027] Specifically, the basic structure of the spray pipe assembly is the swivel base 7, which is assembled at both ends of the crossbar structure. The crossbar structure is axially parallel to the roller shaft of the cathode roller to be cleaned. The swivel base 7 has its own bracket structure or is provided with an assembly part to be assembled on the bracket structure through the assembly part to keep the position fixed. Two sets of telescopic rod frame structures are arranged on the swivel base 7 in a staggered manner, corresponding to the first telescopic rod frame 6 and the second telescopic rod frame. The first telescopic rod frame 6 is used to be assembled and connected with the first spray pipe 4 through the assembly seat 5, while the second telescopic rod frame is used to be assembled and connected with the second spray pipe 8 through the assembly seat 5.

[0028] The structural style of the assembly seat 5 is as Figure 2 shown. Two assembly seats 5 of the same group are provided at both ends of the swivel base 7 for clamping and fixing the position of the first spray pipe 4 or the second spray pipe 8 at both ends. In this embodiment, the fixing structure on the assembly seat 5 for clamping and fixing the first spray pipe 4 / second spray pipe 8 is the hoop 11. The upper part of the hoop 11 has an opening, and ear plates with threaded holes are provided at the opening position. A rubber gasket is formed on the inner ring surface of the hoop 11 as an anti-slip soft lining material. On the one hand, it can be used to protect the pipe body of the first spray pipe 4 / second spray pipe 8, and on the other hand, it can prevent the first spray pipe 4 / second spray pipe 8 from slipping out of the hoop 11. During assembly, the hoop 11 is unfolded and the first spray pipe 4 / second spray pipe 8 is placed in it, and then the hoop 11 is fastened to both sides of the assembly seat 5 through the threaded fasteners 10 at the threaded holes of the ear plates, so as to realize the stable connection between the spray pipe and the assembly seat.

[0029] In this embodiment, the first spray pipe 4 is provided with the first nozzle 3. The first nozzle 3 is an atomizing nozzle, which is used to generate fine acidic spray droplets on the roller surface 2 of the passing cathode roller, while increasing the contact area between the spray liquid and the roller surface 2 of the cathode roller and effectively covering all corners of the cathode roller surface by using the effect of atomizing spray, so as to achieve the purpose of fully wetting and pre-reacting the roller surface 2 of the cathode roller with a higher concentration of acidic spray liquid. In particular, it has a better cleaning effect on the stubborn oxide layer and impurities on the roller surface 2 of the cathode roller. The second spray pipe 8 is provided with the second nozzle 9. The second nozzle 9 is a fan-shaped pressurized nozzle. The characteristic of this nozzle is that the spraying range is wide, the spray liquid sprays out in a fan shape after pressurization, and can form a certain spraying pressure to further wash and peel off the reacted or partially reacted impurities along the tangential direction of the roller surface 2 of the cathode roller.

[0030] The first nozzles 3 and the second nozzles 9 are evenly spaced along the length directions of the first spray pipe 4 and the second spray pipe 8 respectively to ensure the uniform distribution and full coverage of the spray liquid on the roller surface 2 of the cathode roller.

[0031] In this embodiment, both the first spray pipe 4 and the second spray pipe 8 are formed of stainless steel pipes, one end of which is closed and a joint is provided at the other end; while the first nozzle 3 and the second nozzle 9 are ceramic nozzles to cope with the corrosion of the acidic cleaning liquid and ensure the stability and durability during long-term use.

[0032] The assembly seats 5 applied to the first spray pipe 4 and the second spray pipe 8 have the same structure, and the only difference lies in whether the first spray pipe 4 or the second spray pipe 8 is fixed thereon by the hoop 11. Figure 2 Taking the assembly seat 5 at the position of the first spray pipe 4 as an example, a further structural description is as follows:

[0033] A facing coarse adjustment turntable 14 is formed at the base of the assembly seat 5. The facing coarse adjustment turntable 14 is a hinge support with a locking device. The turntable 7 is connected to the facing coarse adjustment turntable 14 through the first telescopic rod frame 6. Through the cooperation of the facing coarse adjustment turntable 14, the first telescopic rod frame 6 and the turntable 7, the angular position adjustment of the assembly seat 5 in the corresponding plane can be carried out, and the orientation of the first spray pipe 4 assembled on the assembly seat 5 can be roughly adjusted; while the outer end of the hoop 11 is assembled on the assembly seat base 13 through the facing fine adjustment turntable 12, and the orientation of the first nozzle 3 on the first spray pipe 4 can be accurately adjusted through the facing fine adjustment turntable 12.

[0034] In this embodiment, the combination of the first telescopic rod frame 6, the second telescopic rod frame and the turntable 7 can be used to adjust the distance between the first spray pipe 4 and the second spray pipe 8, as well as the distances between the first spray pipe 4 and the cathode roller surface 2 and between the second spray pipe 8 and the cathode roller surface 2. The purpose of adjusting the distance between the first spray pipe 4 and the second spray pipe 8 is to ensure that acidic spray liquids with different concentrations can form a reasonable spray coverage area on the cathode roller surface, avoid local over-scouring caused by spray overlap, and also prevent incomplete cleaning caused by spray blind areas. Specifically, the distance between the first spray pipe 4 and the second spray pipe 8 is such that when the cathode roller body 1 rotates, the spray interval between any point on the cathode roller surface 2 for the two is between 10 and 45S; and the purpose of adjusting the distances between the first spray pipe 4 and the cathode roller surface 2 and between the second spray pipe 8 and the cathode roller surface 2 is to ensure that the spray liquid can fully cover and infiltrate the cathode roller surface, while avoiding local over-scouring caused by the too-close distance between the spray liquid and the roller surface or poor cleaning effect caused by the too-far distance.

[0035] A pipe connection seat 15 is further provided on the assembly seat base 13 of the assembly seat 5. One end of the pipe connection seat 15 is used to connect with the corresponding first spray pipe 4 or the second spray pipe 8, and a quick-connect joint 16 is formed at the other end, and the quick-connect joint 16 is used to connect the spray liquid supply device.

[0036] The spray liquid supply device can be selected and configured according to the actual situation in terms of the selection of spray liquid supply. Its selection types include the types of acidic spray liquids and the selection of the spray liquid supply device. In this embodiment, dilute sulfuric acid is used as the acidic spray liquid (the concentration of dilute sulfuric acid in the first spray pipe 4 is higher than that in the second spray pipe 8), and the spray liquid supply device adopts a spray liquid circulation filtration system with a relatively high degree of automation. This system collects the waste liquid after spraying through a liquid receiving tray, stores it in a liquid storage tank, filters it through a filter, and then is pushed back into the spray pipe by a pump body to realize the recycling of the spray liquid. The spray liquid concentration sensor installed in the liquid storage tank monitors the concentration of the spray liquid in real time. When the concentration is lower than the set value, the concentration compensation device is automatically triggered to add an appropriate amount of acidic substance into the liquid storage tank to maintain the cleaning effect and stability of the spray liquid.

[0037] In addition, in order to cope with different production environments and process requirements, the spray liquid circulation filtration system also has a heating and heat preservation function. The spray liquid is heated by an electric heating unit to keep it within an appropriate temperature range, avoiding problems such as a decrease in the spraying effect caused by too low temperature or the blockage of the pipeline due to the solidification of the spray liquid.

[0038] To sum up, the pickling device of the copper foil making machine in this embodiment realizes the efficient, uniform, and stable pickling treatment of the surface of the cathode roller through the coordinated work of the spray pipe assembly, the optimized design of the spray liquid circulation filtration system, and the precise arrangement of the nozzles. It effectively removes the oxides and impurities on the roller surface, extends the interval period of polishing brush cleaning, reduces the operation and maintenance costs, protects the surface of the cathode roller at the same time, and improves the qualification rate and market competitiveness of the copper foil products.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the use of these embodiments is only for explaining the present invention rather than intending to limit the protection scope of the present invention. In addition, it should also be understood that after reading the technical content of the present invention, those skilled in the art can make various changes, modifications, and / or variations to the present invention, and all these equivalent forms also fall within the protection scope defined by the appended claims of this application.

Claims

1. An acid pickling device for a raw foil machine, characterized in that, It includes a spray pipe assembly. The spray pipe assembly includes a first spray pipe and a second spray pipe, with the first spray pipe on top and the second spray pipe below. Along the length direction of the first spray pipe, there are a number of first nozzles. The first nozzles are atomizing nozzles, and the atomizing nozzles face the surface of the cathode roller. Along the length direction of the second spray pipe, there are a number of second nozzles. The second nozzles are fan-shaped pressurizing nozzles, and the fan-shaped liquid flow ejected by the fan-shaped pressurizing nozzles is tangent to the surface of the cathode roller. The first spray pipe and the second spray pipe are externally connected to a spray liquid supply device. The first spray pipe and the second spray pipe are arranged on the same side and at the lower part of the horizontal axis plane of the cathode roller through brackets, and the arrangement directions of the first spray pipe and the second spray pipe are parallel to the roller axis of the cathode roller. During the rotation of the cathode roller, it first passes through the first spray pipe, and after the surface of the cathode roller is sprayed by the first nozzles, it then passes through the second spray pipe for surface spraying by the second nozzles.

2. The pickling device for a raw foil machine according to claim 1, characterized in that, Both the first spray pipe and the second spray pipe are made of stainless steel pipes or corrosion-resistant alloy pipes.

3. The pickling device for a copper foil making machine according to claim 1, characterized in that, The bracket is an adjustable bracket, including a swivel base and a first telescopic support frame and a second telescopic support frame assembled on the swivel base. The first spray pipe is assembled and connected to the swivel base through the first telescopic support frame, and the second spray pipe is assembled and connected to the swivel base through the second telescopic support frame.

4. The pickling device for raw foil machine according to claim 3, wherein The first telescopic support frame and the first spray pipe, and the second telescopic support frame and the second spray pipe are assembled and connected through an annular buckle as a detachable assembly structure.

5. The pickling device for a copper foil making machine according to claim 1, characterized in that, The concentration of the acidic spray liquid used in the first spray pipe is greater than the concentration of the acidic spray liquid used in the second spray pipe.

6. The pickling device for a copper foil machine according to claim 1, wherein, The distance between the first spray pipe and the second spray pipe is such that when the cathode roller rotates, the spraying interval between the two is between 10 and 45 seconds.

7. The pickling device for a raw foil machine according to claim 1, characterized in that The spray liquid supply device is also provided with an electric heating unit for heating and insulating the spray liquid.

8. The pickling device for a raw foil machine according to claim 1, characterized in that, The acidic spray liquid used in the spray liquid supply device is dilute sulfuric acid or dilute hydrochloric acid.

9. The pickling device for a copper foil making machine according to claim 1, characterized in that, The device uses a spray liquid circulation filtration system as the spray liquid supply device. The first spray pipe and the second spray pipe are respectively connected to the spray liquid circulation filtration system, and the spray liquid circulation filtration system provides acidic cleaning liquid for the first spray pipe and the second spray pipe. The spray liquid circulation filtration system includes a liquid receiving tray, a liquid storage tank, and a filter. The liquid receiving tray, the liquid storage tank, and the filter form a complete circulation loop through a circulation pipeline with a pump body.

10. The pickling device for a copper foil generator according to claim 9, characterized in that, A spray liquid concentration sensor is provided in the liquid storage tank, and a concentration compensation device is provided that is used in conjunction with the spray liquid concentration sensor.

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