Electroplating solution defoaming device

Abstract

The utility model relates to the technical field of solar cell electroplating, in particular to an electroplating liquid defoaming device. The electroplating liquid defoaming device comprises a tank body, the tank body is provided with a containing cavity, a liquid return spiral pipe and a first bubble blocking plate are arranged in the containing cavity at intervals, the top end of the liquid return spiral pipe penetrates through the top of the tank body and is fixedly connected with the tank body, and the bottom end of the liquid return spiral pipe is suspended. A buffering assembly used for buffering is arranged in the liquid return spiral pipe. Through the liquid return spiral pipe arranged in the tank body, when a solution flows through the liquid return spiral pipe, due to the fact that the interior of the liquid return spiral pipe is smooth and the change of the flowing direction of the solution is small, the solution can flow along the pipe wall, impact between the solution and the pipe wall is smaller, and therefore bubbles can be reduced; and a buffer assembly for buffering is arranged in the liquid return spiral pipe, so that the descending speed of the solution during backflow can be slowed down.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell electroplating, in particular to an electroplating liquid defoaming device. Background Art

[0002] Solar energy is a clean, green and renewable energy source. Against the backdrop of the increasing depletion of traditional chemical energy sources such as coal, oil and natural gas and the worsening environmental pollution, solar power generation is attracting more and more attention.

[0003] In recent years, the use of electroplating to make metal electrodes for solar cells has become a popular method. Many wet electroplating equipment has a reaction tank located at the top of the equipment and a liquid storage tank located at the bottom of the equipment. The reaction solution is lifted from the liquid storage tank to the reaction tank by a water pump. After the reaction is completed, the solution flows back to the liquid storage tank. In this process, the collision during the solution reaction / reflux process will produce bubbles (foam), which will be further extracted by the water pump, broken into smaller bubbles and pumped into the reaction tank.

[0004] In existing equipment design, the generation of bubbles and the probability of bubbles being sucked into the water pump are usually reduced by lowering the return pipe outlet position and the water pump inlet position. However, this method is not effective for reaction solutions that are prone to bubble generation, and most existing return pipes are composed of two perpendicular straight pipes. When the solution enters from one straight pipe to another, the flow direction changes significantly, and the solution collides with the pipe wall to generate a large number of bubbles, which has an adverse effect on the wet electroplating reaction. Utility Model Content

[0005] (I) The problem to be solved by the present invention is: how to reduce the amount of bubbles generated and reduce the adverse effects on the wet electroplating reaction.

[0006] (II) Technical solution

[0007] The utility model provides a defoaming device for electroplating liquid, comprising a tank body, wherein the tank body has a containing cavity, and a liquid return spiral tube and a first bubble baffle plate are arranged inside the containing cavity at intervals;

[0008] The top end of the liquid return spiral tube passes through the top of the tank body and is fixedly connected to the tank body, and the bottom end thereof is suspended in the air. A buffer component for buffering is arranged inside the liquid return spiral tube;

[0009] The tank body is provided with a liquid outlet pipe communicating with the accommodating cavity, and the liquid outlet pipe is located on a side of the first bubble baffle plate away from the liquid return spiral pipe;

[0010] The top of the first bubble baffle is connected to the top wall of the trough body, and the bottom of the first bubble baffle is suspended.

[0011] According to one embodiment of the utility model, a second bubble baffle plate is arranged in the accommodating cavity, the second bubble baffle plate is located between the first bubble baffle plate and the liquid outlet pipe, the second bubble baffle plate is connected to the bottom wall of the trough body, and a plurality of first through holes are opened on the second bubble baffle plate.

[0012] According to an embodiment of the present invention, the buffer assembly includes at least one buffer mesh plate.

[0013] According to an embodiment of the utility model, at least one clearance hole is opened on the liquid return spiral tube, the buffer mesh plate is installed in the clearance hole, and a fixing component for fixing the buffer mesh plate is arranged on the liquid return spiral tube.

[0014] According to an embodiment of the utility model, a plurality of the buffer mesh plates are provided, a plurality of the clearance holes are provided, and the buffer mesh plates and the clearance holes correspond one to one.

[0015] According to one embodiment of the utility model, the fixing assembly includes a first arc plate and a second arc plate;

[0016] The first arc plate is fixedly connected to the liquid return spiral tube, the second arc plate is fixedly connected to the side wall of the buffer mesh plate, the thickness of the second arc plate is greater than the thickness of the clearance hole, and the first arc plate and the second arc plate are fixedly connected by a plurality of bolts;

[0017] The center of the first arc plate coincides with the center of the second arc plate.

[0018] According to an embodiment of the utility model, the distance from the bottom of the first bubble baffle plate to the bottom wall of the tank body is smaller than the distance from the bottom end of the liquid return spiral tube to the bottom wall of the tank body.

[0019] According to one embodiment of the utility model, the top of the trough body is connected to two pressure release tubes, one of which is arranged between the first bubble baffle plate and the second bubble baffle plate, and the other is arranged between the first bubble baffle plate and the liquid return spiral tube.

[0020] According to an embodiment of the present invention, a plurality of second bubble baffles are provided.

[0021] According to an embodiment of the present invention, the distance from the plurality of first through holes to the bottom wall of the trough body is greater than the distance from the bottom of the first bubble baffle plate to the bottom wall of the trough body.

[0022] Beneficial effects of the utility model:

[0023] The liquid return spiral tube provided in the tank body is compared with the traditional straight tube. During the flow of the solution through the liquid return spiral tube, since the inside of the liquid return spiral tube is smooth and the change in the flow direction of the solution is small, the solution can flow along the tube wall, and the collision with the tube wall is smaller, thereby reducing the generation of bubbles. The buffer component used for buffering provided in the liquid return spiral tube can slow down the descending speed of the solution during reflux, thereby reducing the generation of bubbles. After the solution flows out from the pipe mouth of the liquid return spiral tube, the bubbles in the solution are lighter and will float up. The top of the first bubble baffle plate is connected to the top wall of the tank body, and its bottom is suspended in the air so that the solution can pass through the gap between the first bubble baffle plate and the bottom wall of the tank body. The rising bubbles are blocked by the first bubble baffle plate, thereby further reducing the amount of bubbles in the tank body, reducing the amount of bubbles in the solution flowing out of the liquid outlet pipe, and reducing the adverse effects on the wet electroplating reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A stereogram provided for an embodiment of the utility model;

[0026] Figure 2 A three-dimensional cross-sectional view provided for an embodiment of the utility model;

[0027] Figure 3 A three-dimensional exploded view of the liquid return spiral tube and the buffer assembly provided in an embodiment of the utility model.

[0028] Icons: 1. trough body; 2. first bubble baffle plate; 3. second bubble baffle plate; 301. first through hole; 4. liquid return spiral tube; 401. give way hole; 5. liquid outlet pipe; 6. buffer mesh plate; 7. pressure release pipe; 8. first arc plate; 9. second arc plate. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments 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.

[0030] like Figure 1-Figure 3As shown, an embodiment of the utility model provides a defoaming device for electroplating liquid, comprising a tank body 1, the tank body 1 having a receiving cavity, and a liquid return spiral tube 4 and a first bubble baffle plate 2 are arranged inside the receiving cavity;

[0031] The top of the liquid return spiral tube 4 passes through the top of the tank body 1 and is fixedly connected to the tank body 1, and the bottom of the liquid return spiral tube 4 is suspended in the air. A buffer component for buffering is arranged in the liquid return spiral tube 4;

[0032] The tank body 1 is provided with a liquid outlet pipe 5 communicating with the accommodating cavity, and the liquid outlet pipe 5 is located on a side of the first bubble baffle plate 2 away from the liquid return spiral pipe 4;

[0033] The top of the first bubble baffle plate 2 is connected to the top wall of the tank body 1, and the bottom thereof is suspended.

[0034] Specifically, the liquid return spiral tube 4 provided in the tank body 1 is compared with the traditional straight tube. During the flow of the solution through the liquid return spiral tube 4, since the interior of the liquid return spiral tube 4 is smooth and the flow direction of the solution changes less, the solution can flow along the tube wall and the collision with the tube wall is smaller, thereby reducing the generation of bubbles. The buffer component for buffering provided in the liquid return spiral tube 4 can slow down the descending speed of the solution during reflux, thereby reducing the generation of bubbles. After the solution flows out from the pipe mouth of the liquid return spiral tube 4, the bubbles in the solution are lighter and will float up. The top of the first bubble baffle plate 2 is connected to the top wall of the tank body 1, and its bottom is suspended in the air so that the solution can pass through the gap between the first bubble baffle plate 2 and the bottom wall of the tank body 1. The rising bubbles are blocked by the first bubble baffle plate 2, thereby reducing the amount of bubbles in the solution flowing out of the liquid outlet pipe 5, thereby further reducing the amount of bubbles in the tank body 1, reducing the adverse effects on the wet electroplating reaction.

[0035] A second bubble baffle plate 3 is disposed in the accommodating cavity. The second bubble baffle plate 3 is located between the first bubble baffle plate 2 and the liquid outlet pipe 5 . The second bubble baffle plate 3 is connected to the bottom wall of the tank body 1 . A plurality of first through holes 301 are formed on the second bubble baffle plate 3 .

[0036] The second bubble baffle plate 3 is connected to the bottom wall of the tank body 1 , and the solution passes through the plurality of first through holes 301 provided on the second bubble baffle plate 3 , and the bubbles are blocked and squeezed by the second bubble baffle plate 3 , further reducing the amount of bubbles entering the liquid outlet pipe 5 .

[0037] It should be noted that the two side walls of the first bubble baffle plate 2 and the second bubble baffle plate 3 are in contact with the side walls of the tank body 1. The bottom wall of the tank body 1 is the bottom wall of the accommodating cavity, the top wall of the tank body 1 is the top wall of the accommodating cavity, and the side walls of the tank body 1 are the side walls of the accommodating cavity. The liquid outlet pipe 5 is connected to the liquid inlet of the water pump.

[0038] The bottom end of the liquid return spiral tube 4 is not arranged toward the bottom wall of the tank body 1, so that when the solution flows out of the liquid return spiral tube 4, it will not directly impact the bottom wall or side wall of the tank body 1, thereby reducing the amount of bubbles.

[0039] The tank body 1 is composed of a bottom tank, a first top cover and a second top cover, the second top cover and the tank body 1 are detachably connected, the projections of the first bubble baffle plate 2 and the second bubble baffle plate 3 on the horizontal plane are located within the projection area of ​​the first top cover on the horizontal plane, and the liquid return spiral tube 4 is fixedly connected to the second top cover. When the buffer assembly needs to be disassembled, the second top cover can be directly disassembled from the bottom tank.

[0040] like Figure 3 As shown, according to one embodiment of the present invention, the buffer assembly includes at least one buffer mesh plate 6 .

[0041] By providing the buffer mesh plate 6, the speed at which the solution descends in the liquid return spiral tube 4 can be reduced, thereby reducing the impact force between the solution and the tube wall and reducing the generation of bubbles.

[0042] Of course, in this embodiment, a connecting pipe can also be connected at the position of the buffer mesh plate 6, the connecting pipe is connected to the liquid return spiral tube 4, the top of the connecting pipe passes through the tank body 1, and the buffer mesh plate 6 can also block and squeeze the bubbles in the solution when slowing down the descending speed of the solution. The gas in the bubbles can enter the connecting pipe and discharge from the tank body 1, and the remaining solution is discharged through the pipe mouth of the liquid return spiral tube 4, reducing the amount of bubbles in the solution.

[0043] The mesh size of the buffer mesh plate 6 is between 2 mm and 5 mm, which can not only slow down the falling speed of the solution, but also does not affect the normal circulation of the solution.

[0044] According to an embodiment of the utility model, at least one clearance hole 401 is opened on the liquid return spiral tube 4, the buffer mesh plate 6 is installed in the clearance hole 401, and a fixing component for fixing the buffer mesh plate 6 is provided on the liquid return spiral tube 4.

[0045] According to an embodiment of the present utility model, a plurality of buffer mesh plates 6 are provided, a plurality of clearance holes 401 are provided, and the buffer mesh plates 6 and the clearance holes 401 correspond one to one.

[0046] Specifically, three buffer mesh plates 6 are provided and placed at intervals, respectively provided at the pipe mouth of the bottom end of the liquid return spiral tube 4, one-third of the distance from the pipe mouth of the bottom end of the liquid return spiral tube 4, and one-third of the distance from the top wall of the tank body 1. Compared with providing one buffer mesh plate 6, multiple buffer mesh plates 6 have a better effect of slowing down the descending speed of the solution, and providing the buffer mesh plate 6 at the pipe mouth of the bottom end of the liquid return spiral tube 4 can minimize the impact between the solution and the bottom wall of the tank body 1 and reduce the generation of bubbles.

[0047] The buffer mesh plate 6 is fixed in the clearance hole 401 by a fixing component, so that the buffer mesh plate 6 is detachable and can be replaced regularly.

[0048] like Figure 3 As shown, according to one embodiment of the utility model, the fixing assembly includes a first arc plate 8 and a second arc plate 9;

[0049] The first arc plate 8 is fixedly connected to the liquid return spiral tube 4, the second arc plate 9 is fixedly connected to the side wall of the buffer mesh plate 6, the thickness of the second arc plate 9 is greater than the thickness of the clearance hole 401, and the first arc plate 8 and the second arc plate 9 are fixedly connected by a plurality of bolts;

[0050] The center of the first arc plate 8 coincides with the center of the second arc plate 9. The buffer mesh plate 6 includes a circular mesh plate and an arc block, the circular mesh plate and the arc block are fixedly connected, the circular mesh plate is located in the return liquid spiral tube 4, the arc block is located in the clearance hole 401, and the second arc plate 9 and the arc block are fixedly connected.

[0051] The first arc plate 8 and the second arc plate 9 are connected by a plurality of bolts, which is convenient for disassembly and installation.

[0052] Of course, in this embodiment, the first arc plate 8 and the second arc plate 9 can also be hinged at one end and bolted at the other end. The first arc plate 8 is fixedly connected to the side wall of the liquid return spiral tube 4. When the buffer mesh plate 6 is fixed, the second arc plate 9 is clamped with the buffer mesh plate 6. A groove is provided on the side of the second arc plate 9 close to the first arc plate 8, and a rubber pad is provided in the groove. The second arc plate 9 is clamped in the groove, and the buffer mesh plate 6 can be made more stable by the provided rubber pad. Its purpose does not deviate from the design concept of the utility model, and therefore, it should belong to the protection scope of the utility model.

[0053] Of course, in this embodiment, the liquid return spiral tube 4 can also be formed by connecting multiple arc tubes through flanges. In this case, the diameter of the buffer mesh plate 6 is the same as the diameter of the arc tube. The buffer mesh plate 6 is clamped between two adjacent arc tubes, and the two arc tubes are fixed by flanges. In this way, the flow direction of the solution can be changed by selecting arc tubes with different bending angles. Its purpose does not deviate from the design concept of the utility model, and therefore, it should belong to the protection scope of the utility model.

[0054] The liquid return spiral tube 4 is made of PP material, and the buffer mesh plate 6 is selected according to the properties of the solution used.

[0055] According to one embodiment of the utility model, the distance from the bottom of the first bubble baffle plate 2 to the bottom wall of the tank body 1 is smaller than the distance from the bottom end of the liquid return spiral tube 4 to the bottom wall of the tank body 1, so that the first bubble baffle plate 2 can resist the bubbles in the solution flowing out of the liquid return spiral tube 4.

[0056] Specifically, the distance from the bottom end of the liquid return spiral tube 4 to the bottom wall of the tank body 1 is 10 mm, the distance from the bottom end of the first bubble baffle 2 to the bottom wall of the tank body 1 is 8 mm, and the distance from the liquid return spiral tube 4 to the bottom wall of the tank body 1 does not exceed 10 mm, so that the solution in the liquid return spiral tube 4 has a small impact force when entering the tank body 1, and thus the amount of bubbles generated is small.

[0057] According to one embodiment of the utility model, the top of the tank body 1 is connected to two pressure release pipes 7, one of which is arranged between the first bubble baffle plate 2 and the second bubble baffle plate 3, and the other is arranged between the first bubble baffle plate 2 and the liquid return spiral pipe 4.

[0058] Two pressure release pipes 7 are provided to release the gas between the first bubble baffle plate 2 and the liquid return spiral tube 4, and to release the gas between the first bubble baffle plate 2 and the liquid outlet pipe 5, respectively. Two pressure release pipes 7 are provided so that the gas does not need to flow with the solution, and can be released directly through the pressure release pipes 7 after the gas is separated, thereby better balancing the internal and external air pressures of the tank body 1.

[0059] The top end of the pressure release tube 7 can also be bent so that foreign matter and dust are not easily introduced into the tank body 1 from the pressure release tube 7 to pollute the solution.

[0060] According to an embodiment of the present invention, a plurality of second bubble baffles 3 are provided.

[0061] Preferably, three second bubble baffle plates 3 are provided and are arranged at intervals along the direction from the first bubble baffle plate 2 to the liquid outlet pipe 5. The three second bubble baffle plates 3 are all arranged between the liquid outlet pipe 5 and the first bubble baffle plate 2. Along the direction from the first bubble baffle plate 2 to the liquid outlet pipe 5, the aperture of the first through hole 301 opened on each second bubble baffle plate 3 gradually decreases.

[0062] Then, large bubbles and small bubbles in the solution can be blocked out when passing through the plurality of second bubble baffles 3 in sequence.

[0063] According to one embodiment of the utility model, the distance from the multiple first through holes 301 to the bottom wall of the trough body 1 is greater than the distance from the bottom of the first bubble baffle plate 2 to the bottom wall of the trough body 1. Specifically, the multiple first through holes 301 opened on the second bubble baffle plate 3 are all located in the middle and upper parts of the second bubble baffle plate 3, and are not opened in the lower part of the second bubble baffle plate 3, so that the effect of isolating bubbles is better.

[0064] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0065] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" 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 be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A defoaming device for electroplating solution, characterized in that: The invention comprises a tank body (1), wherein the tank body (1) has a receiving cavity, and a liquid return spiral tube (4) and a first bubble baffle plate (2) are arranged inside the receiving cavity at intervals; The top end of the liquid return spiral tube (4) passes through the top of the tank body (1) and is fixedly connected to the tank body (1), and the bottom end thereof is suspended in the air. A buffer component for buffering is arranged inside the liquid return spiral tube (4); The tank body (1) is provided with a liquid outlet pipe (5) communicating with the accommodating cavity, and the liquid outlet pipe (5) is located on a side of the first bubble baffle plate (2) away from the liquid return spiral pipe (4); The top of the first bubble baffle plate (2) is connected to the top wall of the tank body (1), and the bottom thereof is suspended in the air.

2. The electroplating solution defoaming device according to claim 1, characterized in that: A second bubble baffle plate (3) is arranged in the accommodating cavity. The second bubble baffle plate (3) is located between the first bubble baffle plate (2) and the liquid outlet pipe (5). The second bubble baffle plate (3) is connected to the bottom wall of the tank body (1). A plurality of first through holes (301) are provided on the second bubble baffle plate (3).

3. The electroplating solution defoaming device according to claim 1, characterized in that: The buffer component comprises at least one buffer mesh plate (6).

4. A defoaming device for electroplating solution according to claim 3, characterized in that: At least one clearance hole (401) is provided on the liquid return spiral tube (4), the buffer mesh plate (6) is installed in the clearance hole (401), and a fixing component for fixing the buffer mesh plate (6) is provided on the liquid return spiral tube (4).

5. The electroplating solution defoaming device according to claim 4, characterized in that: The buffer mesh plates (6) are provided in plurality, the clearance holes (401) are provided in plurality, and the buffer mesh plates (6) and the clearance holes (401) correspond one to one.

6. The electroplating solution defoaming device according to claim 4, characterized in that: The fixing assembly comprises a first arc plate (8) and a second arc plate (9); The first arc plate (8) is fixedly connected to the liquid return spiral tube (4), the second arc plate (9) is fixedly connected to the side wall of the buffer mesh plate (6), the thickness of the second arc plate (9) is greater than the thickness of the clearance hole (401), and the first arc plate (8) and the second arc plate (9) are fixedly connected by a plurality of bolts; The center of the circle of the first arc plate (8) coincides with the center of the circle of the second arc plate (9).

7. The electroplating solution defoaming device according to claim 1, characterized in that: The distance from the bottom of the first bubble baffle (2) to the bottom wall of the tank body (1) is smaller than the distance from the bottom end of the liquid return spiral tube (4) to the bottom wall of the tank body (1).

8. The electroplating solution defoaming device according to claim 2, characterized in that: The top of the tank body (1) is connected to two pressure release pipes (7), one of which is arranged between the first bubble baffle plate (2) and the second bubble baffle plate (3), and the other of which is arranged between the first bubble baffle plate (2) and the liquid return spiral pipe (4).

9. The electroplating solution defoaming device according to claim 2, characterized in that: A plurality of the second bubble baffles (3) are provided.

10. The electroplating solution defoaming device according to claim 2, characterized in that: The distance between the plurality of first through holes (301) and the bottom wall of the tank body (1) is greater than the distance between the bottom of the first bubble baffle plate (2) and the bottom wall of the tank body (1).

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