Proportional control air knife for drying oven and surface treatment drying oven

Abstract

The utility model relates to the technical field of standard copper foil post-processing, in particular to a proportion adjusting air knife for a drying oven and a surface processing drying oven, the proportion adjusting air knife comprises an air knife system composed of a shell, an air inlet pipe and an adjusting assembly, an air inlet cavity and an air outlet cavity which are communicated up and down are formed in the shell, the air inlet pipe is arranged on the shell and communicated with the air inlet cavity, and the adjusting assembly is arranged in the shell. The adjusting assembly is movably arranged on the shell so as to adjust air volume distribution in the length extending direction of the air inlet cavity. Air is fed into the air inlet cavity through the air inlet pipe, the air quantity distribution in the length extension direction in the air inlet cavity can be controlled by operating the adjusting assembly, the air quantity in all positions in the air outlet cavity tends to be uniform, and the problem that foil discolors due to uneven air outlet heat distribution of the air knife system is effectively solved; and the conditions of foil folding and liquid carrying caused by non-uniform air outlet are reduced, and the production yield is increased.

Description

Technical Field

[0001] This utility model relates to the field of standard copper foil post-processing technology, specifically to a proportional adjustment air knife for an oven. Background Technology

[0002] Standard copper foil refers to the raw copper foil after purification and rolling during the production process. In the field of standard copper foil post-processing, copper foil production generally adopts electrolysis and multiple purification processes to obtain high-purity cathode copper, which is then processed into pure copper foil through rolling and other processes. Post-processed copper foil is made from standard copper foil through multiple surface treatments, thinning, stretching, and other processes. During processing, the copper foil undergoes passivation treatment, rolling, passivation cleaning, and other processes to continuously improve its purity and surface quality. After multiple thinning and stretching processes, the copper foil has higher electrical conductivity and better corrosion resistance. Different post-processing processes can manufacture copper foils of various specifications and special properties, such as high-strength copper foil and high-temperature stability copper foil.

[0003] In the post-processing of copper foil, the final stage of electrolytic copper foil production often requires drying. The copper foil surface treatment oven is a crucial piece of equipment in the copper foil production process. This oven typically incorporates an air knife system at the inlet and outlet to improve airflow efficiency, used for pre-treatment of the copper foil to ensure both quality and production efficiency. The air knife system is a specially designed device combining the uniform, high-velocity characteristics of air knives with an automatic conveying system. In the field of metal surface treatment, it is used for post-electroplating drying or degreasing, effectively controlling the coating thickness and ensuring its uniformity.

[0004] Existing foil drying ovens often fail to achieve uniform heat distribution. Low-temperature areas tend to cause watermarks on the foil surface, while high-temperature areas can lead to creases and discoloration, negatively impacting foil quality. Related technology discloses a centrifugal ventilation device, including a centrifugal fan, a ventilation mechanism, and a filtration mechanism. The ventilation mechanism includes an air inlet duct, one end of which connects to the air inlet of the centrifugal fan. The filtration mechanism includes two filters installed within the air inlet duct. This device requires a high level of user experience; uneven hot air adjustment can easily cause wrinkling and other problems, reducing product quality, thus still exhibiting the aforementioned issues. Utility Model Content

[0005] The purpose of this invention is to provide a proportional regulating air knife for an oven and a surface treatment oven, aiming to achieve uniform adjustment of the oven's air volume and supply air temperature.

[0006] To achieve the above objectives, this utility model provides a proportional adjustment air knife for an oven, including a housing, an air inlet pipe, and an adjustment component. The housing has an air inlet chamber and an air outlet chamber that are connected vertically. The air inlet pipe is disposed in the housing and connects to the air inlet chamber. The adjustment component is movably disposed in the housing to adjust the air volume distribution in the length extension direction of the air inlet chamber.

[0007] Optionally, the regulating assembly includes at least one regulating valve located on the extension path of the housing along its length, the regulating valve rotating relative to the housing to connect or divide the air inlet chamber into at least two segments.

[0008] Optionally, the top of the housing is provided with a mounting hole, and the regulating valve includes an regulating head and an regulating plate. The regulating head is located on the top of the housing and one end passes through and is rotatably connected to the mounting hole. The regulating plate is connected to the end of the regulating head located in the mounting hole. The regulating plate is accommodated in the air inlet cavity. The regulating head drives the regulating plate to rotate to connect the air inlet cavity or to divide the air inlet cavity into multiple segments.

[0009] Optionally, the regulating assembly is provided with two regulating valves, which divide the air inlet chamber into a left chamber, a middle chamber, and a right chamber connected in sequence, wherein at least the left chamber and the right chamber have the same volume.

[0010] Optionally, the two regulating valves are located at 1 / 4 and 3 / 4 of the length of the air inlet cavity, respectively.

[0011] Optionally, two air inlet pipes are provided, with the two air inlet pipes located at opposite ends of the central cavity and respectively adjacent to the regulating valve.

[0012] Optionally, the proportional adjustment air knife for the oven further includes a flow divider plate, which is disposed inside the housing to divide the space inside the housing into the air inlet chamber and the air outlet chamber distributed vertically, and the flow divider plate is provided with a flow divider hole to connect the air inlet chamber and the air outlet chamber.

[0013] Optionally, a plurality of the diversion holes are spaced apart along the length of the diversion plate, and each of the diversion holes is elongated.

[0014] Optionally, the air outlet cavity is provided on the side away from and facing the diverter plate, the cross section of the air outlet cavity along the air outlet direction is an inverted trapezoid, and the air outlet cavity tends to converge in the direction from the diverter plate to the air outlet.

[0015] This utility model also proposes a surface treatment oven, including two proportional adjustment air knives for the oven as described above, the two proportional adjustment air knives for the oven being located at intervals on the upper and lower opposite sides of the copper foil to be treated.

[0016] This utility model relates to a proportionally adjustable air knife for an oven, belonging to the field of electrolytic copper foil production and post-processing. It comprises an air knife system consisting of a housing, an air inlet pipe, and an adjusting component. The housing contains an air inlet chamber and an air outlet chamber connected vertically. The air inlet pipe is located within the housing and connects to the air inlet chamber. The adjusting component is movably mounted on the housing to adjust the airflow distribution along the length of the air inlet chamber. Air is delivered into the air inlet chamber through the air inlet pipe. The airflow distribution along the length of the air inlet chamber can be controlled by operating the adjusting component, making the airflow more uniform throughout the air outlet chamber. This effectively improves the discoloration problem of the foil caused by uneven heat distribution from the air knife system, reduces foil folding and liquid accumulation due to uneven airflow, and improves the production yield. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the proportional adjustment air knife for an oven according to this utility model.

[0018] Figure 2 This is a schematic diagram of the vertical cross-sectional structure of the proportional adjustment air knife for an oven according to this utility model.

[0019] Figure 3 This is a partial cross-sectional schematic diagram of the proportional adjustment air knife for an oven according to this utility model.

[0020] In the diagram: 100, proportional air knife for the oven; 10, shell; 10A, air inlet cavity; 101A, left cavity; 102A, middle cavity; 103A, right cavity; 10B, air outlet cavity; 10C, air outlet; 20, flow divider; 20A, flow divider hole; 30, air inlet pipe; 50, adjustment assembly; 51, adjustment valve; 511, adjustment head; 512, adjustment plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer and more understandable, the technical solutions of this utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0022] Standard copper foil refers to the raw copper foil after purification and rolling during the production process. In the field of standard copper foil post-processing, copper foil production generally adopts electrolysis and multiple purification processes to obtain high-purity cathode copper, which is then processed into pure copper foil through rolling and other processes. Post-processed copper foil is made from standard copper foil through multiple surface treatments, thinning, stretching, and other processes. During processing, the copper foil undergoes passivation treatment, rolling, passivation cleaning, and other processes to continuously improve its purity and surface quality. After multiple thinning and stretching processes, the copper foil has higher electrical conductivity and better corrosion resistance. Different post-processing processes can manufacture copper foils of various specifications and special properties, such as high-strength copper foil and high-temperature stability copper foil.

[0023] In the post-processing of copper foil, the final stage of electrolytic copper foil production often requires drying. The copper foil surface treatment oven is a crucial piece of equipment in the copper foil production process. This oven typically incorporates an air knife system at the inlet and outlet to improve airflow efficiency, used for pre-treatment of the copper foil to ensure both quality and production efficiency. The air knife system is a specially designed device combining the uniform, high-velocity characteristics of air knives with an automatic conveying system. In the field of metal surface treatment, it is used for post-electroplating drying or degreasing, effectively controlling the coating thickness and ensuring its uniformity.

[0024] Existing foil drying ovens often fail to achieve uniform heat distribution. Low-temperature areas tend to cause watermarks on the foil surface, while high-temperature areas can lead to creases and discoloration, negatively impacting foil quality. Related technology discloses a centrifugal ventilation device, including a centrifugal fan, a ventilation mechanism, and a filtration mechanism. The ventilation mechanism includes an air inlet duct, one end of which connects to the air inlet of the centrifugal fan. The filtration mechanism includes two filters installed within the air inlet duct. This device requires a high level of user experience; uneven hot air adjustment can easily cause wrinkling and other problems, reducing product quality, thus still exhibiting the aforementioned issues.

[0025] This utility model provides a proportional adjustment air knife 100 for an oven, which is applied to the surface treatment oven in the field of standard copper foil post-processing technology.

[0026] like Figure 1 and Figure 2 As shown, in order to achieve the above objectives, this utility model provides a proportional adjustment air knife 100 for an oven, including a housing 10, an air inlet pipe 30, and an adjustment component 50. An air inlet cavity 10A and an air outlet cavity 10B are formed inside the housing 10 and are connected vertically. The air inlet pipe 30 is disposed in the housing 10 and connects to the air inlet cavity 10A. The adjustment component 50 is movably disposed in the housing 10 to adjust the air volume distribution in the length extension direction of the air inlet cavity 10A.

[0027] This utility model relates to a proportionally adjustable air knife 100 for an oven, belonging to the field of electrolytic copper foil production and post-processing. It comprises an air knife system consisting of a housing 10, an air inlet pipe 30, and an adjusting component 50. The housing 10 contains an air inlet chamber 10A and an air outlet chamber 10B connected vertically. The air inlet pipe 30 is located within the housing 10 and connects to the air inlet chamber 10A. The adjusting component 50 is movably located within the housing 10 to adjust the airflow distribution along the length of the air inlet chamber 10A. Air is delivered into the air inlet chamber 10A through the air inlet pipe 30. The airflow distribution along the length of the air inlet chamber 10A can be controlled by operating the adjusting component 50, making the airflow in the air outlet chamber 10B more uniform. This effectively improves the discoloration problem of the foil caused by uneven heat distribution from the air knife system, reduces foil folding and liquid accumulation due to uneven airflow, and improves the production yield.

[0028] Optionally, the top of the housing 10 is provided with a mounting hole (not shown). The regulating valve 51 includes an regulating head 511 and an regulating plate 512. The regulating head 511 is located on the top of the housing 10 and one end passes through and is rotatably connected to the mounting hole. The regulating plate 512 is connected to the end of the regulating head 511 located in the mounting hole. The regulating plate 512 is accommodated in the air inlet cavity 10A. The regulating head 511 drives the regulating plate 512 to rotate to connect the air inlet cavity 10A or to divide the air inlet cavity 10A into multiple segments.

[0029] In this embodiment, the air outlet 10C of the housing 10 is set as the bottom. The regulating valve 51 is installed at the top of the housing 10 and inside the housing 10 at the position of the air inlet cavity 10A. Specifically, the top of the housing 10 is provided with a mounting hole. One end of the regulating head 511 is installed in the mounting hole, and the other end is exposed at the top of the housing 10 for manual or mechanical operation. The shape of the regulating plate 512 is the same as the cross-sectional shape of the air inlet cavity 10A, so that when the length direction of the air inlet cavity 10A is perpendicular to the regulating plate 512, the regulating plate 512 can partition the space inside the air inlet cavity 10A. As the regulating plate 512 rotates to be parallel to the length direction of the air inlet cavity 10A, the regulating plate 512 can gradually connect the partitioned air inlet cavities 10A until they are completely connected. At this time, the air intake of the air intake pipe 30 can be smoothly mixed into the entire cavity of the air inlet cavity 10A, improving the uniformity of air volume in all parts of the air inlet cavity 10A.

[0030] Furthermore, the bottom of the air inlet cavity 10A is provided with a positioning groove (not shown in the figure), and the end of the adjusting plate 512 away from the adjusting head 511 is provided with a positioning protrusion (not shown in the figure). The positioning protrusion is movably limited within the positioning groove. The positioning groove is a hemispherical groove and the positioning protrusion is a spherical protrusion, or the positioning groove is a cylindrical groove and the positioning protrusion is a cylindrical protrusion. Both of these can ensure that when the positioning protrusion rotates with the adjusting plate 512, the positioning groove can limit the relative position of the positioning protrusion, which will not affect the rotation of the adjusting component, but also ensure that the rotation is not biased, thereby improving the stability of the spatial adjustment capability of the adjusting component.

[0031] Optionally, in one embodiment, the regulating assembly 50 includes at least one regulating valve 51, which is disposed on the extension path of the housing 10 in the length direction. The regulating valve 51 rotates relative to the housing 10 to connect or divide the air inlet cavity 10A into at least two segments. That is, when a regulating valve 51 is provided, the regulating valve 51 can rotate relative to the housing 10 to divide the air inlet cavity 10A space within the housing 10 into two segments or connect them completely.

[0032] Optionally, in one embodiment, the regulating assembly 50 is provided with two regulating valves 51, which divide the air inlet chamber 10A into a left chamber 101A, a middle chamber 102A, and a right chamber 103A connected in sequence, in conjunction with reference to... Figure 1As shown, at least the left cavity 101A and the right cavity 103A have the same volume.

[0033] In this embodiment, the regulating component 50 is provided with two regulating valves 51. If there is one air inlet pipe 30, the air inlet pipe 30 can be located at the center of the top of the housing 10. Therefore, the two regulating valves 51 divide the air inlet cavity 10A into a left cavity 101A, a middle cavity 102A and a right cavity 103A that are connected in sequence and have equal spatial volume. The two regulating valves 51 adjust and open the air inlet cavity 10A. The incoming air first passes through the middle cavity 102A and then diffuses to the left cavity 101A and the right cavity 103A.

[0034] In another embodiment, optionally, two air inlet pipes 30 are provided, and two regulating valves 51 divide the air inlet chamber 10A into a left chamber 101A, a middle chamber 102A and a right chamber 103A connected in sequence. The spatial volume of the left chamber 101A and the right chamber 103A is equal, and the spatial volume of the middle chamber 102A is less than or equal to the sum of the spatial volumes of the left chamber 101A and the right chamber 103A.

[0035] The two air inlet pipes 30 can be located at both ends of the central cavity 102A and adjacent to the regulating valves 51, or they can be configured to directly connect the left cavity 101A and the right cavity 103A, respectively. In this case, the volume of the central cavity 102A is smaller than the sum of the volumes of the left cavity 101A and the right cavity 103A. When the two regulating valves 51 are adjusted to open the air inlet cavity 10A, the incoming air enters the left cavity 101A and the right cavity 103A through both sides, and then the incoming air from both sides diffuses into the central cavity 102A, so that the air inlet cavity 10A, which is divided into three chambers, is fully filled with air, and the air volume distribution is relatively uniform.

[0036] Optionally, the two regulating valves 51 are located at 1 / 4 and 3 / 4 of the length of the air inlet chamber 10A, respectively.

[0037] In this embodiment, two air inlet pipes 30 are provided, located at both ends of the central cavity 102A and adjacent to the regulating valves 51 respectively. Air enters the central cavity 102A first when the regulating valves 51 are closed. The two regulating valves 51 are located at 1 / 4 and 3 / 4 of the length of the air inlet cavity 10A, respectively. This means that the volume of the central cavity 102A at this point is equal to the sum of the volumes of the left cavity 101A and the right cavity 103A. Air enters the central cavity 102A through the two ends adjacent to the left cavity 101A and the right cavity 103A respectively.

[0038] Combination Figure 1 and Figure 3 As shown, Figure 3The airflow direction of the central cavity 102A and the right cavity 103A is shown. When the two regulating valves 51 are adjusted to open the air inlet cavity 10A, the airflow diffuses to the middle of the central cavity 102A and the adjacent left cavity 101A and right cavity 103A. This can quickly fill the air inlet cavity 10A, which is divided into three chambers, with airflow distribution in all places. This reduces the occurrence of foil folding and liquid carrying caused by uneven airflow, and improves the production yield.

[0039] Furthermore, if the volume of the middle cavity 102A is greater than the sum of the volumes of the left cavity 101A and the right cavity 103A, the adjustment angle of the adjusting component 51 can be adjusted so that the air inlet cavity 10A is not completely unobstructed, thereby reducing the air intake volume entering the smaller volume of the left cavity 101A and the right cavity 103A, so as to balance the air intake volume of the three cavities. The adjustment of the volume and the angle of the adjusting component 51 can be set as needed, and there is no single limitation here.

[0040] Optionally, the proportional adjustment air knife 100 for the oven also includes a flow divider 20, which is disposed inside the housing 10 to divide the space inside the housing 10 into an air inlet chamber 10A and an air outlet chamber 10B distributed vertically. A flow divider hole 20A is provided through the flow divider 20 to connect the air inlet chamber 10A and the air outlet chamber 10B.

[0041] In this embodiment, one of the functions of the diverter plate 20 is to divide the space of the housing 10 into an air inlet cavity 10A and an air outlet cavity 10B arranged vertically, so that the incoming air is completely mixed in the air inlet cavity 10A before entering the air outlet cavity 10B, and then exiting through the air outlet 10C of the air outlet cavity 10B, so that the air outlet is uniform and avoids excessive or insufficient local air volume, while also avoiding local overheating that would affect the drying results of the foil.

[0042] The second function of the diverter plate 20 is to have a diverter hole 20A that connects the air inlet cavity 10A and the air outlet cavity 10B. This allows the air that is completely mixed in the air inlet cavity 10A to enter the air outlet cavity 10B in an orderly manner through the diverter hole 20A. This controls the path and flow rate of the air flowing from the air inlet cavity 10A to the air outlet cavity 10B, so as to make the air volume uniform throughout the air outlet cavity 10B and improve the uniformity of the air outlet.

[0043] Optionally, multiple diversion holes 20A are spaced apart along the length of the diversion plate 20, and each diversion hole 20A is elongated.

[0044] In this embodiment, the diversion hole 20A is elongated to maximize the air volume. Multiple diversion holes 20A are spaced apart along the length of the diversion plate 20, so that the incoming air flows through the diversion plate 20 in an orderly manner, improving the uniformity of air volume in the air outlet cavity 10B.

[0045] Multiple diversion holes 20A can be arranged at intervals along a straight line on the diversion plate 20, or they can be arranged at staggered intervals on both sides along the length of the diversion plate 20, which increases the air volume from the air inlet 10A to the air outlet 10B, so that the air outlet 10C can smoothly discharge air and form a powerful air knife, thereby improving the efficiency of foil surface treatment.

[0046] This utility model also proposes a surface treatment oven (not shown in the figure), which includes two proportional adjustment air knives 100 as described above. The specific structure of the proportional adjustment air knives 100 is as described in the above embodiments. Since this surface treatment oven adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The two proportional adjustment air knives 100 are respectively located at intervals on the upper and lower opposite sides of the copper foil to be treated, and the air outlets of the two proportional adjustment air knives 100 are both directed towards the surface of the foil, so that both sides of the foil can be treated simultaneously, improving the surface treatment efficiency of the foil.

[0047] In this utility model, the terms "inner", "outer", "upper", "lower", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "fix," and "connect" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A proportional regulating air knife for an oven, characterized in that, The device includes a housing, an air inlet pipe, and an adjustment component. The housing has an air inlet chamber and an air outlet chamber that are connected vertically. The air inlet pipe is located in the housing and connects to the air inlet chamber. The adjustment component is movably located in the housing to adjust the air volume distribution in the length extension direction of the air inlet chamber.

2. The proportional regulating air knife for an oven according to claim 1, characterized in that, The regulating assembly includes at least one regulating valve located on the extension path of the housing along its length. The regulating valve rotates relative to the housing to connect or divide the air inlet chamber into at least two segments.

3. The proportional regulating air knife for an oven according to claim 2, characterized in that, The top of the housing is provided with a mounting hole. The regulating valve includes an regulating head and an regulating plate. The regulating head is located on the top of the housing and one end passes through and is rotatably connected to the mounting hole. The regulating plate is connected to the end of the regulating head located in the mounting hole. The regulating plate is accommodated in the air inlet cavity. The regulating head drives the regulating plate to rotate to connect the air inlet cavity or to divide the air inlet cavity into multiple segments.

4. The proportional regulating air knife for an oven according to claim 3, characterized in that, The regulating assembly is provided with two regulating valves, which divide the air inlet chamber into a left chamber, a middle chamber, and a right chamber connected in sequence, with at least the left chamber and the right chamber having the same volume.

5. The proportional regulating air knife for an oven according to claim 3, characterized in that, The two regulating valves are located at 1 / 4 and 3 / 4 of the length of the air inlet cavity, respectively.

6. The proportional regulating air knife for an oven according to claim 4, characterized in that, There are two air inlet pipes, which are located at both ends of the central cavity and adjacent to the regulating valve.

7. The proportional regulating air knife for an oven according to claim 1, characterized in that, The proportional adjustment air knife for the oven also includes a flow divider plate, which is disposed inside the housing to divide the space inside the housing into the air inlet chamber and the air outlet chamber distributed vertically. The flow divider plate is provided with a flow divider hole to connect the air inlet chamber and the air outlet chamber.

8. The proportional regulating air knife for an oven according to claim 7, characterized in that, The plurality of diversion holes are spaced apart along the length of the diversion plate, and each diversion hole is elongated.

9. The proportional regulating air knife for an oven according to claim 7, characterized in that, The air outlet cavity is located on the side opposite to the diverter plate. The cross-section of the air outlet cavity along the air outlet direction is an inverted trapezoid. The air outlet cavity tends to converge from the diverter plate to the air outlet.

10. A surface treatment oven, characterized in that, It includes two proportional adjustment air knives for an oven as described in any one of claims 1 to 9, the two proportional adjustment air knives for an oven being located at a distance between the upper and lower sides opposite to the copper foil to be processed.

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