Circulating washing device and copper foil production system

Abstract

The utility model provides a circulating washing device which comprises N cleaning assemblies arranged in sequence, each cleaning assembly comprises a cleaning tank and a washing liquid storage tank, each cleaning tank comprises a cleaning inlet and a cleaning outlet, each washing liquid storage tank comprises a washing liquid inlet and a washing liquid outlet, in each cleaning assembly, the cleaning outlet is communicated with the washing liquid inlet, and N is larger than or equal to 2; from the first cleaning assembly to the (N-1) th cleaning assembly, the washing liquid outlet of the previous cleaning assembly is communicated with the cleaning inlet of the next cleaning assembly; the cleaning inlet in the first cleaning assembly is used for receiving initial cleaning liquid. According to the circulating washing device, on the premise that the cleaning effect is guaranteed, the utilization rate of water is increased, the purpose of saving water is achieved, and the pure water manufacturing cost and the wastewater treatment cost are also saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of copper foil manufacturing, and particularly relates to a circulating water washing device and a copper foil production system. Background Art

[0002] According to different application fields, electrolytic copper foil can be divided into lithium battery copper foil and standard copper foil. Lithium battery copper foil mainly refers to copper foil used as current collector in lithium-ion batteries; standard copper foil mainly refers to copper foil used in printed circuit boards (PCBs). The manufacturing process of electrolytic copper foil mainly consists of four major steps, including copper dissolution, raw foil, post-processing and slitting. The pre-production equipment and production process (including copper dissolution, raw foil and slitting process) of standard copper foil and lithium battery copper foil are the same. The main difference lies in the post-processing process. Among them, lithium battery copper foil uses chemical materials for surface antioxidant treatment, and standard copper foil uses electroplating process, and needs to go through pickling, roughening, curing, blackening, ashing, passivation, and coating. After blackening, ashing and passivation treatment, it needs to be cleaned before entering the next stage.

[0003] In the prior art, a pure water storage tank is provided in the water washing process after blackening, ashing and passivation treatment to wash the standard copper foil after blackening, ashing and passivation treatment. This process consumes a large amount of pure water, which causes a waste of water resources to a certain extent. Therefore, developing a circulating water washing device that improves water utilization and saves water resources is a technical problem that needs to be solved urgently at this stage. Utility Model Content

[0004] The main purpose of the utility model is to provide a circulating water washing device to solve the problem of water resource waste.

[0005] The utility model also provides a copper foil production system, which can realize the continuous production of copper foil.

[0006] The utility model provides a circulating water washing device, comprising N cleaning components arranged in sequence, each of the cleaning components comprising a cleaning tank and a washing liquid storage tank, each of the cleaning tanks comprising a cleaning inlet and a cleaning outlet, each of the washing liquid storage tanks comprising a washing liquid inlet and a washing liquid outlet, in each of the cleaning components, the washing outlet is connected to the washing liquid inlet, N≥2;

[0007] Between the first cleaning component and the N-1th cleaning component, the cleaning liquid outlet of the previous cleaning component is connected to the cleaning inlet of the next cleaning component; the cleaning inlet in the first cleaning component is used to receive the initial cleaning liquid; wherein,

[0008] At least one of the wash liquid storage tanks is provided with an inlet filter, and the wash liquid entering the wash liquid storage tank through the wash liquid inlet passes through the inlet filter; and / or,

[0009] An outlet filter is provided in at least one of the washing liquid storage tanks, and the washing liquid flowing out of the washing liquid storage tank through the washing liquid outlet passes through the outlet filter.

[0010] The circulating water washing device as described above, wherein each of the washing liquid storage tanks comprises a first storage tank and a second storage tank which are connected, the washing liquid inlet is arranged in the first storage tank, and the washing liquid outlet is arranged in the second storage tank.

[0011] In the circulating water washing device as described above, a connecting filter is provided at least at a connecting point between the first storage tank and the second storage tank, and the washing liquid flowing from the first storage tank to the second storage tank passes through the connecting filter.

[0012] In the circulating water washing device as described above, the pore size of the inlet filter element is ≥ the pore size of the connecting filter element ≥ the pore size of the outlet filter element.

[0013] The circulating water washing device as described above, wherein, in each of the cleaning components, the arrangement direction of the cleaning tank and the washing liquid storage tank is perpendicular to the horizontal direction.

[0014] The circulating water washing device as described above, wherein, further comprises a transmission component, through which the objects to be washed pass through the N washing tanks in sequence.

[0015] The circulating water washing device as described above, further comprises at least one treatment tank, wherein the treatment tank is arranged between two adjacent cleaning tanks.

[0016] The circulating water washing device as described above, further comprises three processing tanks, and from the first to the Nth direction, they are a passivation processing tank, an ashing processing tank and a blackening processing tank respectively.

[0017] The circulating water washing device as described above, wherein it further comprises a controller, and at least one of the washing liquid storage tanks is provided with a sensor and a control valve;

[0018] The sensor and the control valve are electrically connected to the controller respectively;

[0019] The sensor includes at least one of a liquid level sensor, a temperature sensor, and a pH sensor.

[0020] The utility model also provides a copper foil production system, comprising the circulating water washing device as described above; the Nth washing tank is used for receiving the copper foil to be washed.

[0021] The circulating water washing device provided by the utility model comprises N cleaning components connected in series in sequence, and the washing liquid outlet of the previous one is connected to the washing inlet of the next one, so when the objects to be washed are washed, the washing liquid will sequentially pass through each washing liquid storage tank from the previous washing tank to the next washing tank to wash the objects to be washed in the washing tank. And by setting an inlet filter and an outlet filter in the washing liquid storage tank, the cleaning liquid is removed from the washing tank before entering the washing tank, so that the cleaning liquid is effectively purified. Therefore, the circulating water washing device of the utility model improves the utilization rate of water while ensuring the cleaning effect, achieves the purpose of saving water, and also saves the pure water manufacturing cost and wastewater treatment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or related technologies, the following briefly introduces the drawings required for use in the embodiments of the present utility model or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic diagram of a circulating water washing device provided by the utility model;

[0024] Figure 2 A schematic diagram of another circulating water washing device provided by the utility model;

[0025] Figure 3 This is a schematic diagram of another circulating water washing device provided by the utility model.

[0026] Description of reference numerals:

[0027] 1a-the first cleaning tank; 1b-the second cleaning tank; 1c-the third cleaning tank; 1d-the fourth cleaning tank; 2a-the first washing liquid storage tank; 2b-the second washing liquid storage tank; 2c-the third washing liquid storage tank; 2d-the fourth washing liquid storage tank; 3a-the first first storage tank; 3b-the second first storage tank; 3c-the third first storage tank; 3d-the fourth first storage tank; 4a-the first second storage tank; 4b-the second second storage tank; 4c-the third second storage tank; 4d-the fourth second storage tank; 5a-passivation treatment tank; 5b-ashing treatment tank; 5c-blackening treatment tank. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in combination with the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Figure 1 This is a schematic diagram of a circulating water washing device provided by the utility model. Figure 1 As shown, the utility model provides a circulating water washing device, comprising N cleaning components arranged in sequence, each of the cleaning components comprising a cleaning tank and a cleaning liquid storage tank, each of the cleaning tanks comprising a cleaning inlet and a cleaning outlet, each of the cleaning liquid storage tanks comprising a cleaning liquid inlet and a cleaning liquid outlet, in each of the cleaning components, the cleaning outlet is connected to the cleaning liquid inlet, N≥2;

[0030] Between the first cleaning component and the N-1th cleaning component, the cleaning liquid outlet of the previous cleaning component is connected to the cleaning inlet of the next cleaning component; the cleaning inlet in the first cleaning component is used to receive the initial cleaning liquid; wherein,

[0031] At least one of the wash liquid storage tanks is provided with an inlet filter, and the wash liquid entering the wash liquid storage tank through the wash liquid inlet passes through the inlet filter; and / or,

[0032] An outlet filter is provided in at least one of the washing liquid storage tanks, and the washing liquid flowing out of the washing liquid storage tank through the washing liquid outlet passes through the outlet filter.

[0033] In the circulating water washing device of the present invention, the cleaning tank is used to provide a storage space for the objects to be washed and the washing liquid, so that the objects to be washed are washed with the washing liquid. For example, the objects to be washed may be copper foil, aluminum foil, zinc foil, iron foil, etc.; the washing liquid storage tank is used to store the washing liquid for washing the objects to be washed, for example, water or a solution containing other cleaning agents. When necessary, the washing liquid storage tank provides the cleaning tank with the washing liquid used to wash the objects to be washed.

[0034] The circulating water washing device of the utility model comprises N cleaning components arranged in sequence, each cleaning component comprises a cleaning tank and a washing liquid storage tank, 1a, 1b, 1c, 1d are cleaning tanks respectively, 2a, 2b, 2c, 2d are washing liquid storage tanks respectively, 1a and 2a constitute a cleaning component, 1b and 2b constitute a cleaning component, 1c and 2c constitute a cleaning component, 1d and 2d constitute a cleaning component. Each cleaning tank comprises a washing inlet and a washing outlet, each washing liquid storage tank comprises a washing liquid inlet and a washing liquid outlet, in each cleaning component, the washing outlet of the cleaning tank is connected with the washing liquid inlet of the washing liquid storage tank; between the first cleaning component to the N-1th cleaning component, the washing liquid outlet of the washing liquid storage tank in the previous cleaning component is connected with the washing inlet of the cleaning tank in the next cleaning component; wherein, the washing inlet of the cleaning tank in the first cleaning component is used to receive the initial washing liquid, that is, the washing liquid that enters the circulating water washing device for the first time.

[0035] Specifically, the cleaning inlet of the first cleaning tank 1a is used to receive the initial cleaning liquid, the cleaning outlet of the first cleaning tank 1a is connected to the cleaning liquid inlet of the first cleaning liquid storage tank 2a, the cleaning liquid outlet of the first cleaning liquid storage tank 2a is connected to the cleaning inlet of the second cleaning tank 1b, the cleaning outlet of the second cleaning tank 1b is connected to the cleaning liquid inlet of the second cleaning liquid storage tank 2b, the cleaning liquid outlet of the second cleaning liquid storage tank 2b is connected to the cleaning inlet of the third cleaning tank 1c, and so on, the cleaning outlet of the N-2th cleaning tank is connected to the cleaning liquid inlet of the N-2th cleaning liquid storage tank, the cleaning liquid outlet of the N-2th cleaning liquid storage tank is connected to the cleaning inlet of the N-1th cleaning tank, the cleaning outlet of the N-1th cleaning tank is connected to the cleaning liquid inlet of the N-1th cleaning liquid storage tank, the cleaning liquid outlet of the N-1th cleaning tank is connected to the cleaning inlet of the N-th cleaning tank, and the cleaning outlet of the Nth cleaning tank is connected to the cleaning liquid inlet of the N-th cleaning liquid storage tank. That is, the initial cleaning liquid enters the first cleaning tank 1a through the cleaning inlet of the first cleaning tank 1a, in the first cleaning tank 1a, the cleaning liquid washes the objects to be washed and then flows out through the cleaning outlet of the first cleaning tank 1a, enters the first cleaning liquid storage tank 2a through the cleaning inlet of the first cleaning liquid storage tank 2a, and then flows out through the cleaning outlet of the first cleaning liquid storage tank 2a, enters the second cleaning tank 1b through the cleaning inlet of the second cleaning tank 1b and washes the objects to be washed in the second cleaning tank 1b, and so on, the cleaning liquid flows out through the cleaning outlet of the N-2th cleaning tank, enters the N-2th cleaning liquid storage tank through the cleaning inlet of the N-2th cleaning liquid storage tank, and then flows out through the N-2th cleaning liquid storage tank. The washing liquid flows out from the washing liquid outlet of the washing liquid storage tank, enters the N-1th washing tank through the washing inlet of the N-1th washing tank and washes the objects to be washed in the N-1th washing tank, the washing liquid flows out through the washing outlet of the N-1th washing tank, enters the N-1th washing liquid storage tank through the washing liquid inlet of the N-1th washing liquid storage tank, and then flows out through the washing liquid outlet of the N-1th washing liquid storage tank, enters the Nth washing tank through the washing inlet of the Nth washing tank and washes the objects to be washed in the Nth washing tank, the washing liquid flows out through the washing outlet of the Nth washing tank, enters the Nth washing liquid storage tank through the washing liquid inlet of the Nth washing liquid storage tank, and then flows out through the washing liquid outlet of the Nth washing liquid storage tank.

[0036] In this process, the utility model does not limit the flow driving method of the washing liquid in the cleaning component. For example, N cleaning components can be arranged in sequence in the direction of gravity, so that the flow of the washing liquid is driven by gravity; or, a washing liquid driving pump can be set in the flow direction.

[0037] In one embodiment, at least one washing liquid storage tank is provided with an inlet filter, and the washing liquid entering the washing liquid storage tank through the washing liquid inlet passes through the inlet filter. It can be understood that the inlet filter in the washing liquid storage tank is used to filter the washing liquid that has washed the objects to be washed in the cleaning tank, so as to remove some impurities in the washing liquid. Specifically, the washing liquid flows out through the cleaning outlet of the cleaning tank, and when entering the washing liquid storage tank through the washing liquid inlet of the washing liquid storage tank, it will be filtered by the inlet filter provided in the washing liquid storage tank to remove some impurities, so that the washing liquid entering the washing liquid storage tank is relatively pure, and then flows out through the washing liquid outlet of the washing liquid storage tank, enters the next cleaning tank through the cleaning inlet of the next cleaning tank, and continues to wash the objects to be washed. The inlet filter provided in the washing liquid storage tank can make the washing liquid entering the next cleaning tank to wash the objects to be washed relatively pure, thereby improving the cleaning effect.

[0038] In another embodiment, at least one washing liquid storage tank is provided with an outlet filter, and the washing liquid flowing out of the washing liquid storage tank through the washing liquid outlet passes through this outlet filter. It can be understood that the outlet filter in the washing liquid storage tank is used to filter the washing liquid flowing out of the washing liquid storage tank and washing the objects to be washed in the next cleaning tank, so as to remove some impurities in the washing liquid. Specifically, the washing liquid flows out through the cleaning outlet of the cleaning tank and enters the washing liquid storage tank through the washing liquid inlet of the washing liquid storage tank. When flowing out through the washing liquid outlet of the washing liquid storage tank, it will be filtered by the outlet filter provided in the washing liquid storage tank to remove some impurities, so that the washing liquid flowing out of the washing liquid storage tank is relatively pure, and enters the next cleaning tank through the cleaning inlet of the next cleaning tank, and then continues to wash the objects to be washed. The outlet filter provided in the washing liquid storage tank can make the washing liquid entering the next cleaning tank to wash the objects to be washed relatively pure, thereby improving the cleaning effect.

[0039] In another embodiment, at least one washing liquid storage tank is provided with an inlet filter, and the washing liquid entering the washing liquid storage tank through the washing liquid inlet passes through the inlet filter; and at least one washing liquid storage tank is provided with an outlet filter, and the washing liquid flowing out of the washing liquid storage tank through the washing liquid outlet passes through the outlet filter. It can be understood that the inlet filter in the washing liquid storage tank is used to filter the washing liquid that has washed the objects to be washed in the cleaning tank, and the outlet filter in the washing liquid storage tank is used to filter the washing liquid that flows out of the washing liquid storage tank and washes the objects to be washed in the next cleaning tank, so as to remove some impurities in the washing liquid. Specifically, the washing liquid flows out through the cleaning outlet of the cleaning tank, and when entering the washing liquid storage tank through the washing liquid inlet of the washing liquid storage tank, it will be filtered by the inlet filter element set in the washing liquid storage tank to remove some impurities, and when flowing out through the washing liquid outlet of the washing liquid storage tank, it will be filtered by the outlet filter element set in the washing liquid storage tank to remove some impurities, so that the washing liquid flowing out of the washing liquid storage tank is relatively pure, and enters the next washing tank through the cleaning inlet of the next washing tank, and then continues to wash the objects to be washed. The inlet filter element and the outlet filter element set in the washing liquid storage tank can make the washing liquid entering the next washing tank to wash the objects to be washed relatively pure, thereby improving the cleaning effect.

[0040] The circulating water washing device in this embodiment includes N cleaning components connected in series, and the washing liquid outlet of the previous one is connected to the washing inlet of the next one. Therefore, when washing the objects to be washed, the washing liquid will sequentially pass through each washing liquid storage tank from the previous washing tank to the next washing tank to wash the objects to be washed in the washing tank. And by setting the inlet filter and the outlet filter in the washing liquid storage tank, the cleaning liquid is removed from the washing tank before entering the washing tank, so that the cleaning liquid is effectively purified. Therefore, the circulating water washing device in this embodiment improves the utilization rate of water while ensuring the cleaning effect, achieves the purpose of saving water, and also saves the pure water manufacturing cost and wastewater treatment cost.

[0041] Figure 2 This is a schematic diagram of another circulating water washing device provided by the utility model. Figure 2 As shown, each of the washing liquid storage tanks includes a first storage tank and a second storage tank that are connected, the washing liquid inlet is arranged in the first storage tank, and the washing liquid outlet is arranged in the second storage tank.

[0042] In this embodiment, the washing liquid storage tank is divided into a first storage tank and a second storage tank, and the first storage tank and the second storage tank are interconnected, and the washing liquid inlet is set in the first storage tank, and the washing liquid outlet is set in the second storage tank. 3a, 3b, 3c, and 3d are respectively the first storage tanks, 4a, 4b, 4c, and 4d are respectively the second storage tanks, 3a and 4a constitute a washing liquid storage tank, 3b and 4b constitute a washing liquid storage tank, 3c and 4c constitute a washing liquid storage tank, and 3d and 4d constitute a washing liquid storage tank.

[0043] In one embodiment, after the washing liquid flows out from the washing outlet of the washing tank, it enters the first storage tank through the washing liquid inlet in the first storage tank. Since the first storage tank and the second storage tank are connected, the washing liquid entering the first storage tank will flow into the second storage tank, and then flow out through the washing liquid outlet in the second storage tank, and enter the next washing tank through the washing inlet of the next washing tank to wash the objects to be washed.

[0044] Optionally, a one-way partition can be provided at the connection point between the first storage tank and the second storage tank, so that the washing liquid flows from the first storage tank into the second storage tank instead of flowing back from the second storage tank into the first storage tank, thereby avoiding overflow due to excessive washing liquid in the second storage tank.

[0045] In this embodiment, the washing liquid storage tank is configured as a first storage tank and a second storage tank that are connected, and the washing liquid inlet is set in the first storage tank, the washing liquid outlet is set in the second storage tank, and a one-way partition is set at the connecting point to enable the washing liquid to flow in one direction and avoid overflow.

[0046] In some embodiments of the present invention, a connecting filter is provided at a connection point between at least one of the first storage tank and the second storage tank, and the washing liquid flowing from the first storage tank to the second storage tank passes through the connecting filter.

[0047] It can be understood that the connecting filter element provided at the connecting point between the first storage tank and the second storage tank is used to filter the washing liquid flowing from the first storage tank to the second storage tank.

[0048] In one embodiment, after the washing liquid flows out from the cleaning outlet of the cleaning tank, when it enters the first storage tank through the washing liquid inlet in the first storage tank, because the first storage tank and the second storage tank are connected, the washing liquid in the first storage tank will flow into the second storage tank. At this time, the washing liquid is further filtered and impurities are removed through the connected filter element, and then flows out through the washing liquid outlet in the second storage tank, and enters the next cleaning tank through the cleaning inlet of the next cleaning tank to clean the objects to be washed.

[0049] In this embodiment, a connecting filter is provided at the connecting point between the first storage tank and the second storage tank, so that the washing liquid can be further filtered, so that the washing liquid entering the next cleaning tank is purer and the cleaning effect is better.

[0050] In some embodiments of the present invention, the pore size of the inlet filter element is ≥ the pore size of the connecting filter element ≥ the pore size of the outlet filter element.

[0051] In this embodiment, the filter hole diameter of the inlet filter element is controlled to be ≥ the filter hole diameter of the connecting filter element ≥ the filter hole diameter of the outlet filter element, so that impurities in the washing liquid are removed in sequence according to the size of the impurity particle diameter.

[0052] Specifically, when the washing liquid flowing out from the cleaning outlet of the cleaning tank enters the first storage tank through the washing liquid inlet of the first storage tank, it passes through the inlet filter element to first remove the impurity particles with a diameter greater than or equal to the filter hole diameter of the inlet filter element, and then the washing liquid passes through the connecting filter element arranged at the connecting point between the first storage tank and the second storage tank to remove the impurity particles with a diameter less than or equal to the filter hole diameter of the inlet filter element and greater than or equal to the filter hole diameter of the connecting filter element, and the washing liquid entering the second storage tank passes through the outlet filter element to remove the impurity particles with a diameter greater than or equal to the filter hole diameter of the outlet filter element, so that the washing liquid entering the next cleaning tank through the cleaning inlet of the next cleaning tank contains less impurity particles.

[0053] This embodiment controls the filter hole diameter of the inlet filter element ≥ the filter hole diameter of the connecting filter element ≥ the filter hole diameter of the outlet filter element, and can gradually remove impurities in the washing liquid according to the diameter size of the impurity particles, thereby removing impurities in the washing liquid to the greatest extent, making the washing liquid purer and improving the cleaning effect of the washing liquid.

[0054] In some embodiments of the present invention, in each of the cleaning components, the cleaning tank and the cleaning liquid storage tank are arranged in a direction perpendicular to the horizontal direction.

[0055] In this embodiment, the arrangement direction of the cleaning tank and the washing liquid storage tank is controlled to be perpendicular to the horizontal direction. There is a pressure difference between the washing liquid in the cleaning tank and the washing liquid storage tank. The washing liquid in the cleaning tank can be directly flowed into the washing liquid inlet of the washing liquid storage tank through the cleaning outlet of the cleaning tank by gravity, and can be automatically flowed into the washing liquid storage tank without the help of external force or other equipment. When the washing liquid flows out from the washing liquid outlet of the washing liquid storage tank and enters the cleaning tank through the cleaning inlet of the cleaning tank, a washing liquid driving pump can be set to drive the flow of the washing liquid.

[0056] In this embodiment, the arrangement direction of the cleaning tank and the washing liquid storage tank is controlled to be perpendicular to the horizontal direction, so that the washing liquid can flow directly into the washing liquid storage tank or the cleaning tank by gravity without the aid of external force or other equipment, which can reduce the difficulty of operation, improve work efficiency, have a high space utilization rate, and achieve the purpose of reducing costs.

[0057] In some embodiments of the present invention, the circulating water washing device further includes a transmission component, and the objects to be washed pass through the N washing tanks in sequence through the transmission component.

[0058] It can be understood that the transmission member in this embodiment is used to transmit the laundry to facilitate the laundry to be cleaned in the cleaning tank 2. The transmission member can be a conveyor belt, a roller, or a chain. The friction between the transmission member and the laundry allows the laundry to pass through N cleaning tanks in sequence, so that the laundry can be cleaned multiple times.

[0059] The transmission element in this embodiment transmits the laundry to N cleaning tanks in sequence. The multiple cleaning tanks allow the laundry to be cleaned multiple times, thereby enhancing the cleaning effect. The laundry is transmitted through the transmission element, which can improve the cleaning efficiency and realize automation, thereby reducing manpower and material costs.

[0060] During this process, the utility model does not impose any special limitation on the transmission direction of the transmission member. For example, the transmission direction may be from the first cleaning tank to the Nth cleaning tank, or from the Nth cleaning tank to the first cleaning tank. It may be adjusted according to the type of the objects to be washed and the cleaning requirements, as long as it can ensure that the objects to be washed pass through the 1st to Nth cleaning tanks in sequence.

[0061] In some embodiments of the present invention, the circulating water washing device further comprises at least one treatment tank, and the treatment tank is arranged between two adjacent cleaning tanks.

[0062] The circulating water washing device of the utility model is also provided with at least one processing tank, and the processing tank is arranged between two cleaning tanks, that is, after the objects to be washed are washed in one cleaning tank, they are transported by the transmission element and enter the processing tank for a certain specific processing operation. After the processing is completed, the transmission element then transports the objects to be washed to another cleaning tank for washing, aiming to wash away the impurities remaining in the previous processing stage. After the objects to be washed are washed, they enter the next process for processing, which can avoid the interference of impurities in the objects to be washed on the processing effect, that is, avoid the influence of the previous process on the processing effect of the next process.

[0063] In this embodiment, at least one processing tank is provided between two adjacent cleaning tanks, which can avoid the influence of impurities in the objects to be washed on the processing effect and reduce the influence of impurities brought by the previous process on the processing operation of the next process.

[0064] Figure 3 This is a schematic diagram of another circulating water washing device provided by the utility model. Figure 3 As shown, the circulating water washing device also includes three processing tanks, and from the first to the Nth direction, they are a passivation processing tank 5a, an ashing processing tank 5b and a blackening processing tank 5c.

[0065] It can be understood that the blackening treatment is nickel plating on the surface of the copper foil, which can improve the chemical corrosion resistance of the copper foil; the ashing treatment is zinc plating on the surface of the copper foil, which can passivate the surface and make the copper less likely to oxidize, especially improve the oxidation resistance under high temperature conditions; in order to prevent rust, in addition to zinc plating on the surface, chrome plating passivation is also required. The blackening, ashing and passivation treatments of the copper foil are all for enhancing the chemical resistance of the copper foil.

[0066] The circulating water washing device in this embodiment includes three treatment tanks, namely, a passivation treatment tank 5a, an ashing treatment tank 5b and a blackening treatment tank 5c, and the arrangement direction of the three treatment tanks is from the first cleaning tank to the Nth cleaning tank. In actual production, the processing sequence of the copper foil is: blackening treatment, ashing treatment and passivation treatment, that is, the production sequence is opposite to the water inlet sequence of the cleaning tank, and the copper foil is cleaned by the return process, so that the copper foil can be cleaned more times, and the last step of the washing liquid is the initial cleaning liquid, which can achieve a better cleaning effect.

[0067] Specifically, the circulating water washing device includes three components, a passivation treatment tank 5a is set between the first component and the second component, an ashing treatment tank 5b is set between the second component and the third component, and a blackening treatment tank 5c is set after the third component. The transmission direction of the transmission member is from the third to the first direction, and the flow direction of the washing liquid is from the first to the third direction. The transmission member drives the copper foil to be firstly blackened in the blackening treatment tank 5c, and after the treatment, the copper foil is transported to the third cleaning tank 1c for the first cleaning, after the cleaning is completed, the copper foil is transported to the ashing treatment tank 5b for ashing treatment, after the treatment is completed, the copper foil is transported to the second cleaning tank 1b for the second cleaning, after the cleaning is completed, the copper foil is transported to the passivation treatment tank 5a for passivation treatment, and after the treatment is completed, the copper foil is transported to the first cleaning tank 1a for the third cleaning, and finally, the cleaning of the copper foil in the return process is completed.

[0068] In this embodiment, three processing tanks 01 are provided, which can realize multiple cleaning of the copper foil in the return process on the basis of water saving, thereby improving the cleaning effect.

[0069] In some embodiments of the utility model, the circulating water washing device further comprises a controller, and at least one of the washing liquid storage tanks is provided with a sensor and a control valve;

[0070] The sensor and the control valve are electrically connected to the controller respectively;

[0071] The sensor includes at least one of a liquid level sensor, a temperature sensor, and a pH sensor.

[0072] It can be understood that the sensor includes at least one of a liquid level sensor, a temperature sensor and a pH sensor, and the controller is electrically connected to the sensor and the control valve. Therefore, the controller can be used to remotely receive information transmitted by at least one of the liquid level sensor, the temperature sensor and the pH sensor, and remotely control the control valve to achieve the adjustment of the liquid level, temperature and pH value. Through the electrical connection, the sensor can monitor at least one parameter of the liquid level, temperature and pH value in real time, and transmit this information to the controller. The controller makes corresponding adjustments according to the received information, that is, controls the opening and closing of the control valve. For example, when the liquid level sensor detects that the liquid level is less than the set lower limit, the controller controls the control valve of the washing liquid inlet to open, the control valve of the washing liquid outlet to close, and the washing liquid enters the washing liquid storage tank to replenish the liquid level. When the liquid level is greater than the set upper limit, the controller controls the control valve of the washing liquid inlet to close, and the control valve of the washing liquid outlet to open, so that the washing liquid flows out of the washing liquid storage tank. Therefore, it can avoid the situation that insufficient liquid inlet cannot achieve cleaning or excessive liquid inlet causes overflow. When the temperature sensor detects that the temperature of the washing liquid in a washing liquid storage tank is too high or too low, the controller will control the control valve of the washing liquid inlet to open, the control valve of the washing liquid outlet to close, and the washing liquid will automatically be added to the washing liquid storage tank to reduce or increase the washing liquid temperature. When the pH sensor detects that the pH value of the washing liquid in a washing liquid storage tank is too low or too high, the controller will control the control valve of the washing liquid inlet to close, the control valve of the washing liquid outlet to open, and the washing liquid will be discharged from this washing liquid storage tank and will no longer be recycled.

[0073] This embodiment can realize automatic and intelligent management of the system by setting up a controller to receive information transmitted by the sensor and control the control valve, which helps to improve production efficiency, enhance the stability of the production system, and save labor costs.

[0074] The utility model also provides a copper foil production system, comprising the circulating water washing device as described above; the Nth washing tank is used for receiving the copper foil to be washed.

[0075] It can be understood that the Nth cleaning tank in the circulating water washing device of the utility model is used to receive the copper foil to be washed, and perform preliminary cleaning on the copper foil to be washed, and then perform blackening treatment, first cleaning, ashing treatment, second cleaning, passivation treatment, and third cleaning on the copper foil in sequence.

[0076] In one embodiment, the copper foil to be washed in the copper foil production system is subjected to blackening treatment, ashing treatment and passivation treatment in sequence, and the copper foil to be washed needs to be cleaned during the process. In this process, a total of four cleaning tanks are required to complete the cleaning of the copper foil to be washed. Specifically, the copper foil to be washed first enters the fourth cleaning tank 1d for preliminary cleaning, then enters the blackening treatment tank 5c for blackening treatment, and then enters the third cleaning tank 1c for the first cleaning. After the cleaning is completed, it enters the ashing treatment tank 5b for ashing treatment, and then enters the second cleaning tank 1b for the second cleaning. After the cleaning is completed, it enters the passivation treatment tank 5a for passivation treatment, and then enters the first cleaning tank 1a for the third cleaning. Among them, the washing liquid in the first cleaning tank 1a is the initial cleaning liquid, and the washing liquid in the other cleaning tanks is the cleaning liquid that flows into the previous cleaning tank after filtration. After the cleaning is completed, the next process can be entered, for example, coating treatment. The water inlet sequence is from the first cleaning tank 1a to the fourth cleaning tank 1d, which is designed for a return process, and the washing liquid in the cleaning tank is recycled after filtering, so that the cleaning effect of the copper foil is not affected, and the treatment effects of other processes will not be affected.

[0077] In the copper foil production system of the present embodiment, the circulating water washing device includes a plurality of cleaning tanks, which are arranged in series along the production direction of the copper foil. The initial cleaning liquid is added to the last cleaning tank passed by the copper foil, that is, the first cleaning tank 1a, and then flows through each cleaning tank in sequence along the opposite direction of the copper foil production direction to realize the return process cleaning. Under the premise of not affecting the product quality, the water utilization rate is improved, the cost of industrial water is reduced, water resources are saved, and the continuous production of copper foil is realized.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A circulating water washing device, characterized in that: The invention comprises N cleaning components arranged in sequence, each of the cleaning components comprises a cleaning tank and a cleaning liquid storage tank, each of the cleaning tanks comprises a cleaning inlet and a cleaning outlet, each of the cleaning liquid storage tanks comprises a cleaning liquid inlet and a cleaning liquid outlet, and in each of the cleaning components, the cleaning outlet is connected to the cleaning liquid inlet, and N≥2; Between the first cleaning component and the N-1th cleaning component, the cleaning liquid outlet of the previous cleaning component is connected to the cleaning inlet of the next cleaning component; the cleaning inlet in the first cleaning component is used to receive the initial cleaning liquid; wherein, An inlet filter is provided in at least one of the wash liquid storage tanks, and the wash liquid entering the wash liquid storage tank through the wash liquid inlet passes through the inlet filter; and / or, An outlet filter is provided in at least one of the washing liquid storage tanks, and the washing liquid flowing out of the washing liquid storage tank through the washing liquid outlet passes through the outlet filter.

2. The circulating water washing device according to claim 1, characterized in that: Each of the washing liquid storage tanks includes a first storage tank and a second storage tank that are connected to each other. The washing liquid inlet is arranged in the first storage tank, and the washing liquid outlet is arranged in the second storage tank.

3. The circulating water washing device according to claim 2, characterized in that: A connecting filter is provided at least one of the connecting points between the first storage tank and the second storage tank, and the washing liquid flowing from the first storage tank to the second storage tank passes through the connecting filter.

4. The circulating water washing device according to claim 3, characterized in that: The filter hole diameter of the inlet filter element ≥ the filter hole diameter of the connecting filter element ≥ the filter hole diameter of the outlet filter element.

5. The circulating water washing device according to any one of claims 1 to 4, characterized in that: In each of the cleaning components, the arrangement direction of the cleaning tank and the cleaning liquid storage tank is perpendicular to the horizontal direction.

6. The circulating water washing device according to claim 5, characterized in that: It also includes a transmission component, through which the objects to be washed pass through the N cleaning tanks in sequence.

7. The circulating water washing device according to claim 6, characterized in that: It also includes at least one processing tank, which is arranged between two adjacent cleaning tanks.

8. The circulating water washing device according to claim 7, characterized in that: It also includes three processing tanks, and from the first to the Nth direction, they are a passivation processing tank, an ashing processing tank and a blackening processing tank.

9. The circulating water washing device according to any one of claims 1-4 or 6-8, characterized in that: A controller is also included, and at least one of the wash liquid storage tanks is provided with a sensor and a control valve; The sensor and the control valve are electrically connected to the controller respectively; The sensor includes at least one of a liquid level sensor, a temperature sensor, and a pH sensor.

10. A copper foil production system, characterized in that: It comprises the circulating water washing device as described in any one of claims 1 to 9; the Nth cleaning tank is used to receive the copper foil to be washed.

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