A defoaming device for an overflow box used in an Invar thinning process

Abstract

The utility model belongs to fluid defoaming technical field discloses an overflow box defoaming device for invar thinning process, including cavity, both sides of cavity have entrance and export respectively, flow guide subassembly, flow guide subassembly upper and lower alternately distributed install inside the cavity, the clearance that the cavity and flow guide subassembly top left is greater than the clearance that the cavity and flow guide subassembly below left, exhaust component, exhaust component installs above the cavity, one end with the inside communication of cavity, the other end with outside environment is linked together, the utility model discloses a flow guide plate no.

Description

Technical Field

[0001] This utility model belongs to the field of fluid defoaming technology, specifically relating to an overflow box defoaming device for Invar thinning process. Background Technology

[0002] In the Invar thinning process of FMM (Fine Metal Mask), an isolation section is set between the etching section and the pickling section. An overflow box is added to the isolation section. The specific configuration diagram is shown below. Figure 3 As shown in the diagram, a represents the etching section, b the isolation section, c the pickling section, d the overflow box, and L the material to be processed. The etching section is equipped with a sealed etching chamber containing symmetrically arranged nozzles that can uniformly spray etching solution onto both sides A and B of the Invar alloy (A being the machined surface and B being the non-major machined surface). The pickling section mainly consists of continuous pickling tanks. The isolation section is an independent, sealed chamber separated from the etching and pickling sections by sealing baffles, with only a passageway for the Invar alloy. The overflow box's function is to form a liquid curtain through overflow, further blocking the solutions from the etching and pickling sections. When the etched Invar alloy enters the isolation section, its surface will carry some etching solution. The overflow box continuously overflows with clean water or neutral transition liquid to initially rinse the alloy surface and remove residual etching solution. However, due to the vigorous flow of the liquid during overflow, coupled with the release of gas during the mixing of the solution and the transition liquid, a large number of bubbles are generated in the overflow liquid. The overflow box is connected to the spray pipe of the etching section. Since some spray pipes are not in use, they are assigned to the overflow box. The bubbles come partly from the solution itself, which contains many dense small bubbles, and secondly from the fact that when the spray pipe is under high pressure, the solution impacts the obstruction surface and forms a large number of bubbles. Because the B-side of the Invar alloy is at a low position, the bubbles accumulate on the lower plate surface of the material, thus causing water stains on the B-side.

[0003] Existing methods for removing air bubbles involve applying a hydrophilic coating to the inner wall or key areas of the overflow box to reduce bubble adhesion and allow small bubbles to quickly merge and float. However, the continuous flow of the chemical solution from the etching tank spray pipes into the overflow box also causes air bubbles to continuously travel to the lower surface of the material, resulting in water stain patterns on the B-side.

[0004] To address these issues, those skilled in the art have proposed an overflow box defoaming device for the Invar thinning process. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an overflow box defoaming device for Invar thinning process, which solves the problems in the prior art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An overflow box defoaming device for Invar thinning process includes:

[0008] A cavity, wherein the cavity has an inlet and an outlet on its two sides respectively;

[0009] A flow guiding component is vertically installed inside the cavity, with the flow guiding components arranged alternately at the top and bottom. The gap between the cavity and the top of the flow guiding component is larger than the gap between the cavity and the bottom of the flow guiding component.

[0010] An exhaust assembly is installed above the cavity, with one end connected to the interior of the cavity and the other end connected to the external environment;

[0011] When the fluid enters the cavity from the inlet, it forms a meandering flow path along the flow guide assembly. A gap is left between the fluid and the top inner wall of the cavity, and finally the fluid flows out from the outlet to the overflow box.

[0012] The principle and effect of the above technical solution are as follows:

[0013] The spray pipe of the etching tank is connected to the inlet of the cavity, and the outlet of the cavity is connected to the overflow box. After the liquid enters the cavity, it flows through a meandering path. As the liquid flows, the bubbles move towards the liquid surface, that is, the upper part of the cavity. When the bubbles float above the liquid surface, the bubble wall (liquid film) will flow downward due to gravity, causing the top liquid film to gradually thin. When the thickness of the liquid film is lower than the critical value and cannot withstand the surface tension, it will burst instantly, releasing the internal gas. The gas is discharged through the exhaust component, and the liquid is discharged from the outlet of the cavity to the overflow box. This reduces the large number of bubbles in the liquid, so that there are no bubbles accumulating on the lower surface of the Invar material, thus effectively improving the water stain pattern on the B side of the thinned Invar material.

[0014] Preferably, the inlet of the cavity is located on the outer wall of the cavity near the bottom, and the outlet of the cavity is located on the outer wall of the other side of the cavity near the top. The inlet of the cavity is connected to an inlet pipe, and the outlet of the cavity is connected to an outlet pipe.

[0015] Preferably, there is a height difference between the outlet pipe and the inlet pipe, with the height of the outlet pipe being higher than that of the inlet pipe.

[0016] Preferably, the flow guiding assembly includes a flow guiding plate one with one end installed on the inner wall of the bottom of the cavity and a flow guiding plate two with one end installed on the inner wall of the top of the cavity, and the flow guiding plate one and the flow guiding plate two are staggered inside the cavity.

[0017] Preferably, the length of the first guide vane is shorter than the length of the second guide vane.

[0018] Preferably, the first guide plate and the second guide plate are equidistantly distributed inside the cavity.

[0019] Preferably, the exhaust assembly includes a plurality of exhaust pipes, which are inserted into the top of the cavity near the second guide plate.

[0020] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0021] A fixed connection refers to a connection in which parts or components are fixed in place and there is no relative movement between them;

[0022] A rotating connection is a connection between parts that allows the parts to rotate relative to each other.

[0023] Threaded connections are a type of detachable fixed connection with advantages such as simple structure, reliable connection, and convenient assembly and disassembly. They are widely used in mechanical engineering and connection structure fields.

[0024] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0025] The beneficial effects of this utility model are:

[0026] 1. This utility model sets up a first guide plate and a second guide plate, which are staggered to form a meandering flow path. This allows the top of the first guide plate to have a large gap with the top of the cavity when the liquid flows in the cavity. It is also equipped with an exhaust pipe, so that the bubbles float to the surface of the liquid and then burst, thus reducing the number of bubbles in the liquid.

[0027] 2. This utility model provides an exhaust pipe that actively discharges the gas separated from the bubbles in the liquid, while preventing gas backflow or secondary entrainment, thus ensuring the purity of the liquid in subsequent processes. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a cross-sectional structural diagram of Embodiment 1 of this utility model.

[0030] Figure 2 This is a cross-sectional structural diagram of Embodiment 2 of this utility model.

[0031] Figure 3 This is a structural diagram showing the placement of the overflow box in existing technology.

[0032] In the diagram: 1. Cavity; 2. Flow guiding assembly; 201. Flow guiding plate one; 202. Flow guiding plate two; 3. Liquid inlet pipe; 4. Liquid outlet pipe; 5. Exhaust pipe; a. Etching section; b. Isolation section; c. Pickling section; d. Overflow box; L. Material to be processed. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1.

[0035] Please see Figure 1 and Figure 3 An overflow box defoaming device for Invar thinning process, comprising:

[0036] Cavity 1, with an inlet and an outlet on each side;

[0037] The flow guiding component 2 is vertically installed inside the cavity 1 with alternating upper and lower distributions. The gap between the cavity 1 and the top of the flow guiding component 2 is larger than the gap between the cavity 1 and the bottom of the flow guiding component 2.

[0038] The exhaust assembly is installed above the cavity 1, with one end connected to the interior of the cavity 1 and the other end connected to the external environment;

[0039] When the fluid enters the cavity 1 through the inlet, it forms a meandering flow path along the flow guide assembly 2. A gap is left between the fluid above and the top inner wall of the cavity 1, and finally it flows out from the outlet to the overflow box.

[0040] In use, the spray pipe of the etching tank is connected to the inlet of cavity 1, and the outlet of cavity 1 is connected to the overflow box. After the liquid enters cavity 1, it flows through a meandering path. When the liquid flows, the bubbles will move towards the liquid surface, that is, the upper part of the cavity 1. When the bubbles float above the liquid surface, they will burst, so that the gas is discharged through the exhaust component, and the liquid enters the overflow box from the outlet of cavity 1.

[0041] The inlet of cavity 1 is located on the outer wall of cavity 1 near the bottom, and the outlet of cavity 1 is located on the outer wall of the other side of cavity 1 near the top. The inlet of cavity 1 is connected to an inlet pipe 3, and the outlet of cavity 1 is connected to an outlet pipe 4.

[0042] Liquid enters from the inlet pipe 3 at the bottom of the cavity 1, bubbles gather and burst above the cavity 1, and then the liquid is discharged from the outlet pipe 4 on the other side.

[0043] There is a height difference between the liquid outlet pipe 4 and the liquid inlet pipe 3, with the height of the liquid outlet pipe 4 being higher than that of the liquid inlet pipe 3.

[0044] There is a height difference between the inlet pipe 3 and the outlet pipe 4, which increases the flow path of the liquid. The outlet pipe 4 is located at a higher position, which allows for the final defoaming work to be carried out in front of the outlet end, reducing the amount of air bubbles entering the subsequent process.

[0045] Furthermore, the flow guiding assembly 2 includes a flow guiding plate 201 installed at one end on the inner wall of the bottom of the cavity 1 and a flow guiding plate 202 installed at one end on the inner wall of the top of the cavity 1. The flow guiding plate 201 and the flow guiding plate 202 are staggered inside the cavity 1.

[0046] The staggered distribution of guide plates 201 and 202 makes the interior of cavity 1 a meandering path. After the liquid enters the cavity, it flows along the path, while the bubbles move toward the liquid surface, that is, the upper part of the interior of cavity 1. When the bubbles float above the liquid surface, they will burst because they cannot withstand the surface tension.

[0047] Furthermore, the length of the first deflector 201 is shorter than the length of the second deflector 202.

[0048] The first guide plate 201 is shorter than the second guide plate 202, which makes the gap at the bottom of the cavity 1 smaller than the gap at the top. The larger gap at the top causes the bubbles to gather upwards. After the bubbles break on the liquid surface, the gas is discharged from the exhaust assembly.

[0049] Among them, the first guide plate 201 and the second guide plate 202 are equidistantly distributed inside the cavity 1.

[0050] The equidistant distribution allows the guide plate 201 and guide plate 202 to form a uniform flow resistance for the overflow liquid, avoiding excessive local liquid flow velocity or eddy phenomena. When the overflow liquid flows smoothly, the shearing effect with the air is weakened, and the amount of new bubbles generated will be significantly reduced, resulting in fewer bubbles in the liquid discharged later.

[0051] The exhaust assembly includes multiple exhaust pipes 5, which are inserted into the top of the cavity 1 near the guide plate 202.

[0052] The exhaust pipe 5 can be set vertically or in a hook shape. A vertical shape makes it easier for gas to be discharged, while a hook shape has a curved section that slows down the gas discharge speed and prevents the liquid surface from fluctuating violently due to excessive exhaust, thereby reducing the generation of new bubbles. At the same time, the curved structure allows the accumulated gas to be discharged more smoothly, preventing the airflow from carrying away a small amount of liquid.

[0053] The following description, in conjunction with the accompanying drawings and embodiments, provides a further explanation of this example.

[0054] Working principle: During use, the spray pipe of the etching tank is connected to the inlet of cavity 1, and the outlet of cavity 1 is connected to the overflow box. After the liquid enters cavity 1, it flows through a meandering path and moves along guide plate 1 201 and guide plate 202. During the movement, the air bubbles rise to the liquid surface. The liquid film flows downward due to gravity, causing the top liquid film to gradually thin and rupture, releasing the internal gas. The gas is discharged through exhaust pipe 5, and the liquid is discharged from the outlet of cavity 1 to the overflow box. This reduces the large number of air bubbles in the liquid, so that there are no air bubbles accumulating on the lower surface of the Invar material, thereby effectively improving the water stain pattern on the B side of the thinned Invar material.

[0055] Example 2

[0056] As an optional embodiment, such as Figure 2 and Figure 3 As shown, reducing the number of guide vanes 1 201 and 202 widens the flow path inside cavity 1.

[0057] The widened flow path makes the liquid flow more gently and allows it to stay and store inside cavity 1 for a longer time, allowing bubbles at the bottom of the liquid to rise and then burst, thereby reducing the number of bubbles in the liquid.

[0058] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims of this utility model.

Claims

1. An overflow box defoaming device for Invar thinning process, characterized in that, include: A cavity (1) having an inlet and an outlet on its two sides respectively; The flow guiding component (2) is vertically installed inside the cavity (1) with alternating vertical distributions. The gap between the cavity (1) and the top of the flow guiding component (2) is larger than the gap between the cavity (1) and the bottom of the flow guiding component (2). An exhaust assembly is installed above the cavity (1), with one end connected to the interior of the cavity (1) and the other end connected to the external environment; When the fluid enters the cavity (1) through the inlet, it forms an up-and-down meandering flow path along the flow guide assembly (2). A gap is left between the fluid above and the top inner wall of the cavity (1), and finally it flows out from the outlet to the overflow box.

2. The overflow box defoaming device for Invar thinning process according to claim 1, characterized in that, The inlet of the cavity (1) is located on the outer wall of the cavity (1) near the bottom, and the outlet of the cavity (1) is located on the outer wall of the other side of the cavity (1) near the top. The inlet of the cavity (1) is connected to an inlet pipe (3), and the outlet of the cavity (1) is connected to an outlet pipe (4).

3. The overflow box defoaming device for Invar thinning process according to claim 2, characterized in that, There is a height difference between the outlet pipe (4) and the inlet pipe (3), with the height of the outlet pipe (4) being higher than that of the inlet pipe (3).

4. The overflow box defoaming device for Invar thinning process according to claim 1, characterized in that, The flow guiding assembly (2) includes a flow guiding plate one (201) installed at one end on the inner wall of the bottom of the cavity (1) and a flow guiding plate two (202) installed at one end on the inner wall of the top of the cavity (1). The flow guiding plate one (201) and the flow guiding plate two (202) are staggered inside the cavity (1).

5. The overflow box defoaming device for Invar thinning process according to claim 4, characterized in that, The length of the first guide plate (201) is shorter than the length of the second guide plate (202).

6. The overflow box defoaming device for Invar thinning process according to claim 5, characterized in that, The first guide plate (201) and the second guide plate (202) are equidistantly distributed inside the cavity (1).

7. The overflow box defoaming device for Invar thinning process according to claim 4, characterized in that, The exhaust assembly includes a plurality of exhaust pipes (5), which are inserted into the top of the cavity (1) near the second guide plate (202).

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