Circulating filtration device for electrolyte in copper foil production

Abstract

The invention discloses a circulating filtration device for copper foil production electrolyte, which comprises a precipitation cylinder, a primary filter box and a secondary filter box which are communicated in sequence, the primary filter box comprises a box body and a filter assembly arranged in the box body; the filter assembly comprises a plurality of filter units arranged side by side, each filter unit comprises a partition plate and a first filter screen, a plurality of vertical mounting plates are arranged on the two sides of the interior of the box body, guide grooves matched with the partition plates are formed in the mounting plates, and the first filter screens are arranged at the lower ends of the partition plates. And the interior of the box body is divided into a plurality of filtering cavities by the filtering units. According to the invention, the plurality of filter units are arranged, which filter screen I in the filter cavity is blocked can be observed in real time through the transparent window, so that the filter screen I can be cleaned in time, and the other filter cavities can normally filter, so that the filter efficiency is effectively ensured.

Description

Technical Field

[0001] The invention relates to the technical field of filtering devices, and in particular to a circulating filtering device for electrolyte in copper foil production. Background Art

[0002] Electrolytic copper foil production is to deposit copper ions from copper sulfate aqueous solution on the cathode through electrodeposition. The cleanliness of the electrolyte is an important factor affecting the quality of copper foil. When the solution contains impurities, there will be quality defects such as rough foil surface, abnormal crystal points, pinholes and "craters". These impurities are mainly divided into organic impurities and metal ion impurities. Organic impurities come from additive residues during electroplating and grease substances brought in by some pipes, valves, and instruments. Metal impurities mainly come from copper raw materials and equipment corrosion. To remove these impurities, on the one hand, it is necessary to control them from the source, such as selecting high-quality copper raw materials and degreasing when installing new valves and instruments. On the other hand, the prepared fresh solution and the solution returned after electroplating are treated with excess colloidal organic matter by combining flexible filter media and loose filter media.

[0003] After the copper wire in the copper dissolving tank is dissolved into liquid, some impurities and some large undissolved substances will be produced. Therefore, a filtering device is needed to filter out these impurities. However, the filter screen of the existing electrolyte circulation filtering device usually adopts an integrated structure. After the filter screen is blocked, the filter screen needs to be completely removed for cleaning, which seriously affects the filtering efficiency. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a circulating filtration device for copper foil production electrolyte. By setting up multiple filtration units, it is possible to observe in real time through a transparent window which filter cavity has a clogged filter screen so that it can be cleaned in time, while the remaining filter cavities can filter normally, effectively ensuring the filtration efficiency.

[0005] The technical solution provided by the present invention to solve the above problems is: a circulating filtration device for electrolyte in copper foil production, comprising a sedimentation cylinder, a primary filter box and a secondary filter box, wherein the sedimentation cylinder, the primary filter box and the secondary filter box are connected in sequence; the primary filter box comprises a box body and a filter assembly arranged inside the box body;

[0006] The filter assembly includes a plurality of filter units arranged side by side, and the filter unit includes a partition and a filter screen. A plurality of vertical mounting plates are arranged on both sides of the interior of the box body, and the mounting plates are provided with guide grooves cooperating with the partitions. The filter screen is arranged at the lower end of the partition. The filter unit divides the interior of the box body into a plurality of filter chambers, and a transparent window is arranged on the box body.

[0007] Preferably, the partition includes a frame and a movable plate, the movable plate can be movably mounted on the frame, and the filter screen is arranged at the lower end of the movable plate.

[0008] Preferably, limiting holes are provided on both sides of the upper end of the frame, and limiting pins can be installed in the limiting holes.

[0009] Preferably, a force applying rod is provided at the upper end of the frame.

[0010] Preferably, a second filter screen is provided at the lower end of the frame.

[0011] Preferably, protrusions are provided on both sides of the lower part of the filter cavity to form an installation cavity cooperating with filter screen 1, and the width of the installation cavity is smaller than the width of the filter cavity. When the partition moves upward to drive filter screen 1 to move upward, filter screen 1 is separated from the installation cavity, and filter screen 2 enters the installation cavity at the same time.

[0012] Preferably, a support rod for providing support for the filter screen 1 is provided at the lower end of the interior of the box body.

[0013] Preferably, a cross bar is provided at the upper end of the movable plate.

[0014] Preferably, a detachable upper cover is provided at the upper end of the box body.

[0015] Preferably, the secondary filtration box is filled with diatomaceous earth and activated carbon.

[0016] Compared with the prior art, the advantages of the present invention are: by setting up multiple filter units, the present invention can observe in real time through the transparent window which filter cavity has a clogged filter screen so as to clean it in time, while the remaining filter cavities can filter normally, effectively ensuring the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a front cross-sectional view of a primary filter box of the present invention;

[0020] Figure 3 It is a left side cross-sectional view of the primary filter box of the present invention. Figure 1 ;

[0021] Figure 4 It is a left side cross-sectional view of the primary filter box of the present invention. Figure 2 ;

[0022] Figure 5 yes Figure 2 The enlarged schematic diagram of point A in the middle;

[0023] Figure 6 yes Figure 2 The enlarged schematic diagram of point B in the middle;

[0024] Figure 7 It is a front view of a partition of the present invention.

[0025] The attached drawings are marked with: 1. sedimentation cylinder, 2. upper cover, 3. box body, 4. secondary filter box, 5. mounting plate, 6. filter chamber, 7. bump, 8. cross bar, 9. force rod, 10. movable plate, 11. frame, 12. filter screen one, 13. filter screen two, 14. mounting chamber, 15. limit hole, 16. support rod. DETAILED DESCRIPTION

[0026] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0027] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise specified and limited, the terms "assemble", "connect", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0031] It should also be understood that the terms used in this description of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the description of the embodiments of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms of "a", "an" and "the" are intended to include plural forms.

[0032] The specific embodiment of the present invention is shown in the accompanying drawings, a circulating filtration device for copper foil production electrolyte, comprising a sedimentation cylinder 1, a primary filter box and a secondary filter box 4, wherein the sedimentation cylinder 1, the primary filter box and the secondary filter box 4 are connected in sequence; the primary filter box comprises a box body 3 and a filter assembly arranged inside the box body 3;

[0033] The filter assembly includes a plurality of filter units arranged side by side, and the filter unit includes a partition and a filter screen 12. A plurality of vertical mounting plates 5 are arranged on both sides of the interior of the box body 3, and the mounting plates 5 are provided with guide grooves cooperating with the partitions. The filter screen 12 is arranged at the lower end of the partition. The filter unit divides the interior of the box body 3 into a plurality of filter chambers 6, and a transparent window is arranged on the box body.

[0034] Specifically, the partition includes a frame 11 and a movable plate 10, the movable plate 10 is movably mounted on the frame 11, and the filter screen 12 is arranged at the lower end of the movable plate 10. Furthermore, limiting holes 15 are arranged on both sides of the upper end of the frame 11, and limiting pins can be installed in the limiting holes 15.

[0035] In the above scheme, by setting up multiple filter units, it is possible to observe in real time through the transparent window which filter cavity has a clogged filter screen so that it can be cleaned in time, while the remaining filter cavities can filter normally, effectively ensuring the filtering efficiency.

[0036] In this embodiment, in order to facilitate the operation of the frame, a force application rod 9 is provided at the upper end of the frame 11 .

[0037] Wherein, a filter screen 13 is arranged at the lower end of the frame 11 .

[0038] In this embodiment, further, the two sides of the lower part of the filter cavity 6 are provided with protrusions 7 to form an installation cavity 14 that cooperates with the filter screen 12. The width of the installation cavity 14 is smaller than the width of the filter cavity. When the partition moves upward to drive the filter screen 12 to move upward, the filter screen 12 is separated from the installation cavity 14, and the filter screen 2 13 enters the installation cavity 14. In order to ensure the sealing performance between the filter screen 1 and the installation cavity and reduce the outflow of electrolyte from the gap between the filter screen 1 and the installation cavity, the filter screen 1 and the filter screen 2 both adopt the structure of the installation frame plus the filter screen body. The edge position of the installation frame is provided with corrosion-resistant rubber, and the sealing performance between the filter screen 1 and the installation cavity is improved by the rubber. In order to improve the stability of the filter screen 1 when it is installed, a support rod 16 for providing support for the filter screen 12 is provided at the lower end of the box body 3. After the filter screen 1 is installed, the lower end of the filter screen away from the movable plate contacts the support rod to provide support for the filter screen 1. Furthermore, in order to facilitate the operation of the movable plate, a cross bar 8 is provided at the upper end of the movable plate 10 .

[0039] In the above scheme, the pump body first transports the electrolyte in the sedimentation cylinder to the primary filter box. When the box is filled with liquid, the pump body is closed and the primary filter box is started for filtration. When it is observed through the transparent window that the height of the electrolyte in a certain filter chamber is significantly higher than the height of the electrolyte in the other filter chambers, it can be judged that the filter screen 1 in the filter chamber is blocked and needs to be cleaned. Then the upper cover can be opened, and then the force rod on the frame in the corresponding filter chamber is pulled to make the partition move upward as a whole until the limit hole on the frame is exposed, and then the limit pin is inserted into the limit hole. In this process, the filter screen 1 is separated from the installation cavity, and the filter screen 1 is Second, enter the installation cavity, and then pull the cross bar to make the movable plate continue to move upward until filter screen 1 is exposed from the electrolyte to the upper end of the inner part of the box body, and then use tools to clean filter screen 1; the partition of this scheme can be used as a mounting body for filter screen 1 on the one hand, and the disassembly and assembly of filter screen 1 can be achieved by pulling the partition; on the other hand, it can be used as a partition of the box body to divide the interior of the box body into multiple filter cavities; when filter screen 1 in one of the filter cavities is blocked, the partition in the corresponding filter cavity can be pulled up, and the electrolyte in the filter cavity can be mixed with the electrolyte in the partition filter cavity for filtration, thereby ensuring the filtration efficiency of the electrolyte.

[0040] As another embodiment of the present invention, a detachable upper cover 2 is provided at the upper end of the box body 3. When cleaning the filter screen 1, the upper cover can be removed and then the cleaning operation can be performed.

[0041] As another embodiment of the present invention, diatomaceous earth and activated carbon are filled in the secondary filter box 4. Diatomaceous earth and activated carbon can effectively adsorb the fine impurities remaining in the electrolyte, further improving the filtering effect.

[0042] The specific working process of the present invention is as follows: the electrolyte is first transported to the sedimentation cylinder for sedimentation through the pump body, some larger impurities in the electrolyte are precipitated to the bottom of the sedimentation cylinder, and then the upper layer of electrolyte in the sedimentation cylinder is transported to the primary filter box for primary filtration through the pump body, and then transported to the secondary filter box for secondary filtration after filtration in the primary filter box, thereby completing the filtration of the electrolyte.

[0043] The above description is only for the best embodiment of the present invention, but it should not be understood as limiting the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the scope of protection of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A circulating filtration device for copper foil production electrolyte, comprising a sedimentation cylinder (1), a primary filter box and a secondary filter box (4), wherein the sedimentation cylinder (1), the primary filter box and the secondary filter box (4) are connected in sequence; characterized in that: The primary filter box comprises a box body (3) and a filter assembly arranged inside the box body (3); The filter assembly comprises a plurality of filter units arranged side by side, the filter units comprising a partition and a filter screen (12), a plurality of vertical mounting plates (5) are arranged on both sides of the interior of the box (3), the mounting plates (5) are provided with guide grooves cooperating with the partition, the filter screen (12) is arranged at the lower end of the partition, the filter unit divides the interior of the box (3) into a plurality of filter chambers (6), and a transparent window is arranged on the box (3).

2. The circulating filtration device for electrolyte in copper foil production according to claim 1, characterized in that: The partition comprises a frame (11) and a movable plate (10); the movable plate (10) is movably mounted on the frame (11); and the filter screen (12) is arranged at the lower end of the movable plate (10).

3. The circulating filtration device for copper foil production electrolyte according to claim 2, characterized in that: Limiting holes (15) are arranged on both sides of the upper end of the frame (11), and limiting pins can be installed in the limiting holes (15).

4. The circulating filtration device for copper foil production electrolyte according to claim 2, characterized in that: A force application rod (9) is provided at the upper end of the frame (11).

5. The circulating filtration device for copper foil production electrolyte according to claim 3, characterized in that: A second filter screen (13) is provided at the lower end of the frame (11).

6. The circulating filtration device for electrolyte in copper foil production according to claim 5, characterized in that: The two sides of the lower part of the filter cavity (6) are provided with protrusions (7) to form an installation cavity (14) that cooperates with the filter screen 1 (12). The width of the installation cavity (14) is smaller than the width of the filter cavity. When the partition moves upward to drive the filter screen 1 (12) to move upward, the filter screen 1 (12) is separated from the installation cavity (14), and at the same time, the filter screen 2 (13) enters the installation cavity (14).

7. The circulating filtration device for electrolyte in copper foil production according to claim 6, characterized in that: A support rod (16) is provided at the lower end of the interior of the box body (3) for providing support for the filter screen 1 (12).

8. The circulating filtration device for electrolyte in copper foil production according to claim 2, characterized in that: A crossbar (8) is provided at the upper end of the movable plate (10).

9. The circulating filtration device for electrolyte in copper foil production according to claim 1, characterized in that: A detachable upper cover (2) is provided at the upper end of the box body (3).

10. The circulating filtration device for electrolyte in copper foil production according to claim 1, characterized in that: The secondary filtration box (4) is filled with diatomaceous earth and activated carbon.

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