Anodic oxidation hole sealing groove and circulation system

Abstract

The utility model belongs to the technical field of aluminum alloy anode section production, and particularly relates to an anodizing hole sealing groove and circulation system, which comprises a groove body, a backflow pipeline is connected to the upper side of the groove body, a spewing pipeline is connected to the lower side of the groove body, and a bottom layer branch pipe connected with the spewing pipeline is arranged at the bottom of the groove body. The bottom-layer branch pipe is arranged along the inner side wall of the tank body, a plurality of spewing holes are further formed in the bottom-layer branch pipe and obliquely face the inner side wall of the tank body, and an overflow tank is arranged above the bottom-layer branch pipe and connected with a backflow pipeline. The gushing holes obliquely face the inner side wall of the tank body, so that liquid at the gushing position flows upwards by leaning against the side wall, turns to the middle of the tank body to flow under the blocking of the bottom of the overflow tank, and moves downwards in the middle after convection with fluid at the upper layer of the liquid on the opposite side; and after returning to the bottom layer, the liquid can be driven by the spewing liquid to rise along the side wall again for circulation, so that the problem of non-uniform temperature and components is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum alloy anode segment production, and specifically relates to an anodizing sealing tank and a circulation system. Background Art

[0002] Anodizing is a traditional technology that forms an oxide film by electrolytic oxidation on the surface of metals and their alloys. It is widely used in modern biomedical fields, aerospace, and 3C industries. After the anodized film is formed, it needs to be sealed to obtain excellent corrosion resistance. The commonly used sealing process in the anodizing industry is high-temperature nickel salt sealing. In order to promote the development of green anodes, a heavy metal-free sealing process is developed.

[0003] The patent CN219342341U discloses an integrated double-group counter-circulation device for dyeing and sealing of aluminum coils in anodizing process, comprising: a tank liquid circulation device and a closed tank body; a plurality of tank liquid circulation devices are installed on the closed tank body; the tank liquid circulation device comprises: a circulation pipe, a water outlet and a water inlet; one end of the circulation pipe is connected to the water outlet, and the other end is connected to the water inlet, and the water outlet and the water inlet are arranged in the closed tank body. The present application adopts a double-group counter-circulation device to dye while sealing, thereby reducing the dyeing process, optimizing the process, and further improving the production efficiency.

[0004] In the above scheme, a double set of counter-circulation devices are used to maintain the uniformity of the temperature and composition of the tank liquid. However, the counter-circulation of the liquid can only produce disordered flow, in which the temperature and composition are difficult to be fully uniform, and the flow rate difference between the convection and non-convection areas is large. It is very easy to form a vortex in the liquid container that enters and exits at the same time, which hinders the fusion of the liquid in the convection and non-convection areas, resulting in continuous high temperature and high concentration in local areas. Utility Model Content

[0005] The purpose of the utility model is to provide an anodizing sealing tank and a circulation system that can solve the above technical problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An anodizing sealing tank comprises a tank body, wherein a return pipeline is connected to the upper side of the tank body and a gushing pipeline is connected to the lower side of the tank body, a bottom branch pipe connected to the gushing pipeline is arranged at the bottom of the tank body, the bottom branch pipe is arranged along the inner wall of the tank body and a plurality of gushing holes are opened thereon, the gushing holes are arranged obliquely toward the inner wall of the tank body, an overflow tank is arranged above the bottom branch pipe, and the overflow tank is connected to the return pipeline.

[0008] In the anodizing sealing tank, the bottom branch pipe is divided into two parallel sections arranged at two opposite inner walls of the tank body, and the gushing holes are inclined toward the two opposite inner walls of the tank body.

[0009] In the anodized sealing tank, a plurality of the gushing holes are arranged axially along the bottom branch pipe and the spacing between adjacent gushing holes gradually decreases as they are away from the gushing pipeline.

[0010] In the anodizing sealing tank, the overflow tank is arranged on the tank body and is located above the bottom branch pipe, and the notch of the overflow tank is lower than the top of the side wall of the tank body.

[0011] In the anodizing sealing tank, a heating tube is provided at the bottom of the tank body, and the heating tube is arranged between the two bottom branch tubes.

[0012] In the anodizing sealing tank, an upper branch pipe is arranged above the overflow tank, and a spray hole is opened on the upper branch pipe, and the spray hole is arranged toward the inner cavity of the tank body.

[0013] In the anodized sealing tank, a cover plate is provided at the notch of the tank body, and the cover plate is hingedly connected to the tank body.

[0014] In the anodizing sealing tank, an avoidance opening is provided at the edge of the cover plate, and the upper branch pipe and the heating pipe pass into the tank body through the avoidance opening.

[0015] The utility model also provides an anodizing sealing circulation system, and the anodizing sealing circulation system comprises the anodizing sealing tank.

[0016] In the anodizing sealing circulation system, a reflux tank is arranged outside the tank body, the gushing pipeline and the reflux pipeline are connected to the reflux tank, a circulation pump is arranged in the gushing pipeline, and a heat exchanger is also arranged on the gushing pipeline between the circulation pump and the tank body.

[0017] The advantages of the utility model are:

[0018] The utility model tilts the gushing hole toward the inner side wall of the tank body, so that the liquid at the gushing place flows upward along the side wall and turns to flow to the middle of the tank body under the obstruction of the bottom of the overflow tank. After convection with the opposite side fluid at the upper layer of the liquid, it will merge in the middle and move downward. After returning to the bottom layer, it will rise along the side wall again driven by the gushing liquid to circulate. The two fluid circulations in the tank body can drive all the liquids in the tank to flow and blend without dead ends, avoiding the problem of uneven temperature and components.

[0019] An upper branch pipe is set up above the liquid to spray unheated liquid into the middle of the tank. The low-temperature liquid will flow to the bottom of the tank, driving the flow circulation of the liquid and further consolidating the circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the tank structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the internal structure of the tank body of the utility model.

[0022] Figure 3 It is a schematic diagram of the circulation system structure of the utility model.

[0023] In the figure, there are a tank body 1, a reflux pipeline 11, a gushing pipeline 12, a bottom branch pipe 13, a gushing hole 14, an overflow tank 15, a heating pipe 2, an upper branch pipe 3, a spray hole 31, a cover plate 4, a reflux tank 5, a circulation pump 51, and a heat exchanger 52. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the utility model and the accompanying drawings to further describe the technical solution of the utility model, but the utility model is not limited to these embodiments.

[0025] Example 1

[0026] like Figure 1-Figure 2 As shown, the anodizing sealing tank includes a tank body 1, a return pipeline 11 is connected to the upper side of the tank body 1, and a gushing pipeline 12 is connected to the lower side. A bottom branch pipe 13 connected to the gushing pipeline 12 is arranged at the bottom of the tank body 1. The bottom branch pipe 13 is arranged along the inner wall of the tank body 1 and a plurality of gushing holes 14 are opened thereon. The gushing holes 14 are arranged inclined toward the inner wall of the tank body 1, and an overflow groove 15 is arranged above the bottom branch pipe 13, and the overflow groove 15 is connected to the return pipeline 11.

[0027] That is, the bottom branch pipe 13 sprays the liquid toward the inner side wall of the tank body, so that the liquid at the gushing location flows upward along the side wall and turns to flow toward the middle of the tank body under the obstruction of the bottom of the overflow tank, and after convection with the opposite side fluid at the upper layer of the liquid, it will merge in the middle and move downward, and after returning to the bottom layer, it will rise along the side wall again driven by the gushing liquid to circulate. These two fluid circulations in the tank body can drive all the liquids in the tank to flow and blend without dead ends, avoiding the problem of uneven temperature and composition.

[0028] In this embodiment, the bottom branch pipe 13 is divided into two parallel sections and arranged at two opposite inner walls of the tank body 1 , and the gushing holes 14 are inclined toward the two opposite inner walls of the tank body 1 .

[0029] The bottom branch pipes 13 on both sides are used to form a circulation in the tank body, each occupying half of the space, so as to drive all the liquids in the tank body 1 to flow evenly without dead angles.

[0030] In this embodiment, a plurality of gushing holes 14 are arranged axially along the bottom branch pipe 13 , and the distance between adjacent gushing holes 14 is gradually reduced as the distance from the gushing pipeline 12 increases.

[0031] The liquid in the gushing pipeline 12 is heated by the exchanger outside the tank body 1. The farther away from the pump, the smaller the power of the liquid entering the gushing hole, and the liquid inflow is lower than the side close to the pump, so the density of the gushing holes at the end of the gushing pipeline 12 is increased to balance the flow at the front and rear ends.

[0032] In this embodiment, the overflow trough 15 is disposed against the trough body 1 and is located above the bottom branch pipe 13 , and the notch of the overflow trough 15 is lower than the top of the side wall of the trough body 1 .

[0033] The overflow groove 15 serves as a guide for the liquid flow at the liquid level position, so that the rising liquid flow turns horizontally and moves downward after convection in the middle area of ​​the tank body 1. At the same time, after the liquid level rises, the liquid above the overflow groove 15 will flow into the overflow groove 15, and after accumulating a certain amount, it will be discharged by the reflux pipeline 11, which can prevent the reflux liquid from returning to the tank body 1 after cooling and hindering the temperature control in the tank body 1.

[0034] In this embodiment, a heating tube 2 is provided at the bottom of the tank body 1 , and the heating tube 2 is arranged between two bottom-layer branch tubes 13 .

[0035] The area between the two bottom branch pipes 13 is the area where the circulation descends in the middle of the tank body 1. The bottom of this area is heated by the heating pipes 2, which corresponds to the cold liquid sprayed from the upper end, so that the circulation circulates.

[0036] Preferably, an upper branch pipe 3 is arranged above the overflow tank 15 , and a spray hole 31 is opened on the upper branch pipe 3 , and the spray hole 31 is arranged toward the inner cavity of the tank body 1 .

[0037] The spray hole 31 is inclined downward at about 20° toward the inner cavity, and the sprayed liquid falls in the middle of the tank body 1 along a parabola. It is mainly used to adjust the liquid here to reach the processing temperature. The workpiece also enters the liquid from here. After the liquid contacts the workpiece, the temperature drops and drops to the heating tube 2 at the bottom. After heating, the circulation continues.

[0038] Preferably, a cover plate 4 is provided at the notch of the trough body 1 , and the cover plate 4 is hingedly connected to the trough body 1 .

[0039] Adding the cover plate 4 can effectively control the temperature of the liquid, prevent the liquid from contacting the air and losing too much heat, and prevent the tank liquid from being exposed to the air for a long time over a large area, thereby reducing the possibility of accidental contamination. The cover plate 4 is set to be reversible, which can facilitate the entry and exit of the workpiece in the liquid.

[0040] Preferably, an escape opening is provided at the edge of the cover plate 4 , and the upper branch pipe 3 and the heating pipe 2 pass into the interior of the tank body 1 through the escape opening.

[0041] The tank body 1 can participate in other processing steps, wherein the heating pipe 2 and the upper branch pipe 3 will be added or removed according to the process, so an avoidance opening for the pipe to pass through is opened on the cover plate 4, making the use of the tank body 1 more flexible and changeable.

[0042] Example 2

[0043] like Figure 3 As shown, the anodizing sealing tank in Example 1 is used in an anodizing sealing circulation system, a reflux tank 5 is arranged outside the tank body 1, a gushing pipeline 12 and a reflux pipeline 11 are connected to the reflux tank 5, a circulation pump 51 is arranged in the gushing pipeline 12, and a heat exchanger 52 is also arranged on the gushing pipeline 12 between the circulation pump 51 and the tank body 1.

[0044] The reflux liquid reaches the reflux tank 5 through the reflux pipe 11, and then is discharged into the tank body 1 through the circulation pump 51. During the pumping process, the cooled tank liquid is raised to a temperature equivalent to that in the tank body 1 through the heat exchanger 52, and the liquid continues to flow and circulate in the tank body 1.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An anodizing sealing tank, comprising a tank body (1), wherein the upper side of the tank body (1) is connected to a return pipeline (11) and the lower side of the tank body (1) is connected to a gushing pipeline (12), characterized in that: The bottom of the tank body (1) is provided with a bottom branch pipe (13) connected to the gushing pipeline (12); the bottom branch pipe (13) is arranged along the inner wall of the tank body (1) and is provided with a plurality of gushing holes (14); the gushing holes (14) are arranged obliquely toward the inner wall of the tank body (1); an overflow groove (15) is arranged above the bottom branch pipe (13); the overflow groove (15) is connected to the return pipeline (11).

2. The anodized sealing tank according to claim 1, characterized in that: The bottom branch pipe (13) is divided into two parallel sections arranged at two opposite inner walls of the tank body (1), and the gushing holes (14) are inclined toward the two opposite inner walls of the tank body (1).

3. The anodized sealing tank according to claim 2, characterized in that: The plurality of gushing holes (14) are arranged axially along the bottom branch pipe (13), and the spacing between adjacent gushing holes (14) gradually decreases as the distance from the gushing pipeline (12) increases.

4. The anodized sealing tank according to claim 2, characterized in that: The overflow groove (15) is arranged on the inner wall of the trough body (1) and is located above the bottom branch pipe (13); the groove opening of the overflow groove (15) is lower than the top of the side wall of the trough body (1).

5. The anodized sealing tank according to claim 2, characterized in that: A heating pipe (2) is provided at the bottom of the tank body (1), and the heating pipe (2) is arranged between the two bottom branch pipes (13).

6. The anodized sealing tank according to claim 5, characterized in that: An upper branch pipe (3) is arranged above the overflow trough (15), and a spray hole (31) is opened on the upper branch pipe (3), and the spray hole (31) is arranged toward the inner cavity of the trough body (1).

7. The anodized sealing tank according to claim 6, characterized in that: A cover plate (4) is provided at the notch of the trough body (1), and the cover plate (4) is hingedly connected to the trough body (1).

8. The anodized sealing tank according to claim 7, characterized in that: The edge of the cover plate (4) is provided with an escape opening, and the upper branch pipe (3) and the heating pipe (2) pass through the escape opening into the interior of the tank body (1).

9. Anodizing sealing circulation system, characterized in that: The anodizing sealing circulation system comprises the anodizing sealing tank described in any one of claims 1-8.

10. The anodizing sealing circulation system according to claim 9, characterized in that: A reflux groove (5) is arranged outside the tank body (1), the gushing pipeline (12) and the reflux pipeline (11) are connected to the reflux groove (5), a circulation pump (51) is arranged in the gushing pipeline (12), and a heat exchanger (52) is also arranged on the gushing pipeline (12) between the circulation pump (51) and the tank body (1).

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