Corrosion resistance testing device and method based on low-voltage anode foil preparation

Abstract

The invention discloses a corrosion resistance testing device and method based on low-voltage anode foil preparation, and relates to the technical field of low-voltage anode foil testing.The corrosion resistance testing device comprises a testing machine with a detection pool, and the detection pool is filled with acid liquor used for detecting aluminum foil; a circulating device is arranged in the detection pool and comprises a pair of flow guide mechanisms and a pair of driving parts; wherein the pair of flow guide mechanisms is arranged in the detection pool; the flow guide mechanism comprises a limiting frame, a pair of first flow guide covers and two sets of second flow guide covers. The flow guide mechanism is matched with the driving part, the extrusion thrust of the acid liquor to the aluminum foil is accurately controlled by driving the flow of the acid liquor and regulating the power of the driving part, so that the gravity of the aluminum foil is counteracted, the aluminum foil is almost suspended in the detection pool, and the interference when the acid liquor is in contact with the aluminum foil can be greatly reduced; meanwhile, the contact reaction efficiency of the acid liquor and the aluminum foil is greatly improved by driving the acid liquor to flow, and the detection effect is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage anode foil testing, and particularly to a corrosion resistance testing device and method based on the preparation of low-voltage anode foil. Background Art

[0002] As a key material for aluminum electrolytic capacitors, in the production process of low-voltage anode foil, first, the aluminum foil is subjected to surface corrosion and pore-forming treatment to significantly increase its specific surface area; subsequently, through the forming process, a corrosion-formed foil is made and used as the positive electrode of the aluminum electrolytic capacitor.

[0003] However, affected by the complexity of the production process, it is difficult to control the product quality of low-voltage anode foil. Even for different batches of aluminum foils produced by the same manufacturer, there are differences in their corrosion resistance. Once aluminum foils with unqualified corrosion resistance are used, the performance and service life of the capacitors will be greatly reduced. Therefore, before using the aluminum foil, it is necessary to carry out corrosion resistance tests to ensure the quality of aluminum electrolytic capacitors.

[0004] For example, the Chinese patent with the publication number CN215574543U discloses a testing device for the corrosion resistance of low-voltage anode foil, including a testing container made of transparent glass. One side of the top of the testing container is fixed with a fixing plate, and the other side of the top of the testing container is movably connected with a movable plate. The top of the fixing plate is fixedly connected with a power supply, and the positive and negative electrodes of the power supply are respectively connected with a first conductive head and a second conductive head through wires. The first conductive head and the second conductive head extend into the testing container, and a clip is fixed at the bottom end of the first conductive head. A material guiding component is fixed on one inner wall of the testing container, and an acid testing component is arranged inside the testing container. The bottom end surface of the movable plate is fixed with a wire pulling component, and the wire between the first conductive head and the positive electrode of the power supply passes through the wire pulling component. It solves the technical problems of instability in adjusting the acidity of the acid solution and inconvenience in placing or taking out the aluminum foil in the prior art, and realizes the technical effects of rapid shedding of the filter cake after pressure filtration and effective crushing of the filter cake.

[0005] In the corrosion resistance detection, the above device constructs a clamping structure with the help of clips. However, this clamping method has significant drawbacks: when the clips clamp the aluminum foil, physical occlusion will be formed at the contact part, resulting in the acid solution being unable to fully contact this part of the aluminum foil, making it difficult to participate in the corrosion reaction. Moreover, the clamping force applied by the clips will cause local deformation of the aluminum foil. After the aluminum foil is deformed, the original uniform hydrodynamic environment on its surface is broken, and the flow and distribution of the acid solution on the surface of the aluminum foil are disturbed. This not only reduces the effect of the acid solution on the surface of the aluminum foil, but also seriously destroys the uniformity of the overall contact between the aluminum foil and the acid solution, ultimately affecting the accuracy of the corrosion resistance detection results. Summary of the Invention

[0006] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a corrosion resistance testing device and method based on low-voltage anode foil, which is used to solve the problem proposed in the above-mentioned background technology that the external force generated when the aluminum foil is clamped by a clamping structure easily causes the aluminum foil to deform, and the clamping part forms a shield on the aluminum foil. These two factors interfere with the normal contact between the acid solution and the aluminum foil, resulting in the test results being difficult to accurately reflect the actual corrosion resistance of the aluminum foil.

[0007] The purpose of the present invention can be achieved through the following technical solutions: A corrosion resistance testing device based on low-voltage anode foil comprises a testing machine with a detection pool, wherein the detection pool is filled with acid for detecting aluminum foil; a circulation device is arranged in the detection pool, and the circulation device comprises: A pair of flow guide mechanisms and a pair of driving members; wherein the pair of flow guide mechanisms are arranged in a detection pool; the flow guide mechanism comprises a limit frame, a pair of first flow guide covers and two groups of second flow guide covers; the bottom of the detection pool, the limit frame and the two groups of second flow guide covers form a detection cavity with an open top; the detection cavity is filled with acid liquid, and the aluminum foil is immersed in the acid liquid of the detection cavity; each of the first flow guide covers is respectively arranged on one side of each group of the second flow guide covers, and the interior of each of the first flow guide covers is connected to the detection cavity through a group of second flow guide covers; the driving member is installed in the detection pool, the output end of the driving member is connected to the first flow guide cover, and the input end of the driving member is immersed in the acid liquid of the detection pool.

[0008] Preferably, the flow guiding mechanism further comprises a pair of flow guiding plates respectively arranged on the top of the two groups of second flow guiding covers and used for limiting the flow direction of the acid liquid guided out from the top of the detection cavity.

[0009] Preferably, the second flow guide cover includes an accumulation chamber, a filter screen, a flow guide section and a guide section; the accumulation chamber is connected to the interior of the first flow guide cover through the filter screen; the flow guide section is connected to one side of the accumulation chamber, and the guide section is connected to one side of the flow guide section, and the interior of the first flow guide cover is connected to the detection chamber through the accumulation chamber, the flow guide section and the guide section in sequence.

[0010] Preferably, both ends of the second air guide cover are rotatably connected to the limit frame via a connecting shaft, and a first torsion spring is arranged between the second air guide cover and the limit frame; an adjustment mechanism is arranged on the limit frame and is used to control the acid liquid discharge direction of the two groups of the second air guide covers.

[0011] Preferably, the adjustment mechanism includes a winding shaft, a connecting belt, a motor and a plurality of isolation cloths; the plurality of isolation cloths are arranged between the output ends of adjacent guide sections; the winding shaft is rotatably connected to a limiting frame, one end of the connecting belt is wound around the winding shaft, and the other end of the connecting belt is fixedly arranged at the output end of the topmost guide section; the motor is mounted on the limiting frame, and is used to drive the winding shaft to rotate around its axis.

[0012] Preferably, a clamping mechanism is provided above the flow guide plate corresponding to the position-limiting frame; the clamping mechanism includes a pair of clamping plates and a second torsion spring; the pair of clamping plates are rotatably connected through a rotating shaft, and the second torsion spring is arranged between the pair of clamping plates and the rotating shaft; when the pair of clamping plates are not restricted, the second torsion spring is used to drive the pair of clamping plates to approach and abut against each other.

[0013] Preferably, the clamping mechanism further includes a plurality of limiting blocks; a plurality of flow guide holes are arranged side by side on one of the clamping plates; the plurality of limiting blocks are fixedly arranged on the other clamping plate, and the plurality of limiting blocks are adapted to the plurality of flow guide holes.

[0014] Preferably, the clamping mechanism further includes a locking mechanism for locking the positions of the pair of clamping plates.

[0015] Preferably, the locking mechanism includes a mounting seat, a third torsion spring, a threaded cylinder, a threaded rod and a handle; a through hole allowing the mounting seat and the pair of clamping plates to clamp and pass through the aluminum foil is formed on the position-limiting frame, the mounting seat is arranged on the rotating shaft of the pair of clamping plates, and the third torsion spring is arranged between the mounting seat and the rotating shaft; the threaded cylinder is fixedly arranged on the mounting seat, the threaded rod is rotatably connected to the top of the mounting seat around its axis, and the threaded rod is threadedly connected to the threaded cylinder; the handle is coaxially fixedly arranged on the top of the threaded rod.

[0016] A corrosion resistance testing method based on the preparation of a low-voltage anode foil, using the above-mentioned corrosion resistance testing device based on the preparation of a low-voltage anode foil, specifically includes the following steps: Step 1, immersion detection: Place the aluminum foil vertically in the detection chamber, and corrode the aluminum foil with the acid solution in the detection chamber. Step 2, acid solution circulation: Start the driving member, introduce the acid solution in the detection pool into the first flow guide cover through the driving member, and the acid solution in the first flow guide cover is diverted through the second flow guide cover and then introduced into the detection chamber, so that the acid solution is re-introduced into the detection pool through the top of the detection chamber, and circulates in this way, so that a continuous upward flow thrust is formed in the detection chamber to push the aluminum foil to maintain a relatively suspended state.

[0017] Advantages of the present invention: By setting the cooperation of the flow guide mechanism and the driving member, by driving the flow of the acid solution, adjusting the power of the driving member, accurately controlling the extrusion thrust of the acid solution on the aluminum foil, thereby offsetting the gravity of the aluminum foil, making the aluminum foil almost suspended in the detection pool, which can greatly reduce the interference when the acid solution contacts the aluminum foil; at the same time, by driving the flow of the acid solution, the contact reaction efficiency with the aluminum foil is greatly improved, and the detection effect is significantly improved. By setting the second deflector and the adjusting mechanism, a structure with adjustable acid flow direction in the detection chamber is formed, further precisely controlling the counteracting force of the acid flow in the detection chamber on the gravity of the aluminum foil. When the second deflector is driven to rotate upward, it will squeeze the isolation cloth to bulge, thereby compressing the gap between the aluminum foil and the isolation cloth, and then increasing the flow rate between the aluminum foil and the outlet end of the second deflector, facilitating the promotion of the aluminum foil to counteract gravity and suspend. By setting the clamping mechanism and the locking mechanism, the state of the clamping plate is locked through the locking mechanism, so that the clamping of the aluminum foil can be released, facilitating the placement of the aluminum foil for corrosion detection. When the aluminum foil needs to be taken out, just move the clamping plate upward to restore the clamping of the aluminum foil, facilitating the taking out of the aluminum foil. Brief Description of the Drawings

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is a schematic three-dimensional structure diagram of the whole of the present invention; Figure 2 is a schematic enlarged three-dimensional structure diagram of the circulation device of the present invention; Figure 3 is a schematic enlarged three-dimensional structure diagram of a partial section of the circulation device of the present invention from the first perspective; Figure 4 is the present invention Figure 3 Schematic enlarged structure diagram of area A; Figure 5 is a schematic enlarged three-dimensional structure diagram of a partial section of the circulation device of the present invention from the second perspective; Figure 6 is the present invention Figure 5 Schematic enlarged structure diagram of area B; Figure 7 is a schematic diagram of acid flow in the first circulation state of the circulation device of the present invention; Figure 8 is the present invention Figure 7 Schematic enlarged structure diagram of area C; Figure 9 is a schematic diagram of acid flow in the second circulation state of the circulation device of the present invention; Figure 10 is the present invention Figure 9 Schematic enlarged structure diagram of area D; Figure 11 is a schematic enlarged three-dimensional structure diagram of the second deflector of the present invention; Figure 12 is a schematic enlarged three-dimensional structure diagram of the clamping mechanism of the present invention; Figure 13 is a schematic exploded enlarged three-dimensional structure diagram of the clamping mechanism of the present invention; Figure 14 is a schematic enlarged front view of a partial section of the clamping plate of the present invention; Figure 15 is the process flow diagram of the present invention.

[0020] In the figure: 1, testing machine; 2, detection pool; 3, circulation device; 31, diversion mechanism; 311, limit frame; 312, first diversion cover; 313, second diversion cover; 3131, accumulation cavity; 3132, filter screen; 3133, diversion section; 3134, guiding section; 314, first torsion spring; 315, diversion plate; 316, adjustment mechanism; 3161, isolation cloth; 3162, winding shaft; 3163, connecting belt; 3164, motor; 32, driving part; 4, clamping mechanism; 41, clamping plate; 42, diversion hole; 43, limit block; 44, locking mechanism; 441, mounting seat; 442, third torsion spring; 443, threaded cylinder; 444, threaded rod; 445, handle; 5, aluminum foil. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] Embodiment 1: Please refer to Figures 1-14 as shown, a corrosion resistance testing device based on the preparation of low-voltage anode foil, such as Figures 1-4 as shown, includes a testing machine 1 with a detection pool 2, and the detection pool 2 is filled with an acid solution for detecting the aluminum foil 5; a circulation device 3 is arranged in the detection pool 2, and the circulation device 3 includes a pair of diversion mechanisms 31 and a pair of driving parts 32; wherein, a pair of diversion mechanisms 31 are arranged in the detection pool 2; the diversion mechanism 31 includes a limit frame 311, a pair of first diversion covers 312 and two groups of second diversion covers 313; the bottom of the detection pool 2, the limit frame 311 and the two groups of second diversion covers 313 enclose a detection cavity with an open top; the detection cavity is filled with acid solution, and the aluminum foil 5 is immersed in the acid solution in the detection cavity; each first diversion cover 312 is respectively arranged on one side of each group of second diversion covers 313, and the inside of each first diversion cover 312 is communicated with the detection cavity through a group of second diversion covers 313; the driving part 32 is installed in the detection pool 2, the output end of the driving part 32 is communicated with the first diversion cover 312, and the input end of the driving part 32 is immersed in the acid solution in the detection pool 2; it can be understood that the driving part 32 is a prior art, such as a submersible pump, and all materials in contact with the acid solution in the detection pool 2 are corrosion-resistant materials.

[0023] It should be noted that the detection cavity is a hollow plate-like structure, and its width is slightly greater than the thickness of the aluminum foil 5. This design allows the aluminum foil 5 to be placed nearly vertically under the support of the side wall of the detection cavity when placed in the detection cavity. For example, the aluminum foil 5 (such as Figure 8 The angle between the aluminum foil 5 and the bottom of the detection pool 2 is maintained at 80°-85°. This placement method greatly reduces the contact between the aluminum foil 5 and other structures, and effectively reduces the interference caused by the acid when it contacts the aluminum foil 5.

[0024] When the driving member 32 is started, the acid in the detection pool 2 will be driven to flow into the detection chamber. The acid will be squeezed from the two opposite sides of the aluminum foil 5 to the middle of the aluminum foil 5, and then flow upward through the top of the detection chamber back to the detection pool 2, forming a circular flow. In this process, by adjusting the power of the driving member 32, the extrusion thrust of the acid on the aluminum foil 5 can be accurately controlled to offset the gravity of the aluminum foil 5, so that the aluminum foil 5 is almost suspended in the detection pool 2, so as to carry out corrosion detection. In addition, the circulation of the acid greatly improves the contact reaction efficiency between the acid and the aluminum foil 5, and significantly improves the detection effect.

[0025] See also Figures 3-6 The flow guiding mechanism 31 further includes a pair of flow guiding plates 315 respectively disposed on the top of the two sets of second flow guiding covers 313 and used for limiting the flow direction of the acid liquid guided from the top of the detection cavity.

[0026] It should be noted that the cross-section of the pair of guide plates 315 is a triangle with an open top, and together they form a structure similar to a venturi tube. With this special structure, the detection cavity becomes an area with a relatively slow acid flow rate. This effectively avoids the problem of difficulty in controlling the aluminum foil 5 (such as Figure 8 At the same time, the openings at the top of a pair of guide plates 315 cooperate with each other to limit the aluminum foil 5 so that it can maintain a relatively vertical placement state. In addition, the structural design also increases the overall width of the detection cavity, allowing the detection cavity to accommodate more acid. More acid participates in the interaction with the aluminum foil 5, greatly improving the detection efficiency of the corrosiveness of the aluminum foil 5.

[0027] See also Figures 3-6 and Figure 11 The second flow guide cover 313 includes an accumulation chamber 3131, a filter screen 3132, a flow guide section 3133 and a guide section 3134; the accumulation chamber 3131 is connected to the interior of the first flow guide cover 312 through the filter screen 3132; the flow guide section 3133 is connected to one side of the accumulation chamber 3131, and the guide section 3134 is connected to one side of the flow guide section 3133. The interior of the first flow guide cover 312 is connected to the detection chamber through the accumulation chamber 3131, the flow guide section 3133 and the guide section 3134 in sequence.

[0028] It should be noted that, in order to precisely control the suspended state of the aluminum foil 5 (as shown in Figure 8 ), the device uses the second flow guide cover 313 to further regulate the upward flow direction of the acid solution in the detection chamber. The acid solution first flows through the filter screen 3132. This step can not only filter out impurities in the acid solution but also defoam the bubbles generated in the acid solution. The acid solution that has been filtered and defoamed gradually accumulates in the accumulation chamber 3131. Subsequently, under the guidance of the diversion section 3133, the acid solution enters the guiding section 3134 and is discharged from the guiding section 3134. It should be noted that the output end of the guiding section 3134 tilts upward, so that the discharged acid solution pushes the aluminum foil 5 at an upward-inclined angle instead of vertically. This inclined thrust is more convenient for offsetting the gravity of the aluminum foil 5 and helps the aluminum foil 5 maintain the suspended state.

[0029] Please refer to Figures 3-6 . Both ends of the second flow guide cover 313 are rotatably connected to the limit frame 311 through a connecting shaft. A first torsion spring 314 is arranged between the second flow guide cover 313 and the limit frame 311; an adjustment mechanism 316 is arranged on the limit frame 311 and is used to control the acid solution discharge direction of the two groups of second flow guide covers 313.

[0030] It should be noted that when performing corrosion detection on aluminum foils 5 with different weights and thicknesses, it is necessary to control the offset force of the acid solution flow in the detection chamber against the gravity of the aluminum foil 5. At this time, the adjustment mechanism 316 is used to control the synchronous rotation of multiple second flow guide covers 313, thereby controlling the direction of the acid solution discharged from the second flow guide cover 313, and further realizing the control of the thrust generated by the acid solution flow, so as to achieve the purpose of offsetting the gravity of aluminum foils 5 with different weights.

[0031] Please refer to Figures 3-10 . The adjustment mechanism 316 includes a winding shaft 3162, a connecting belt 3163, a motor 3164 and multiple isolation cloths 3161; multiple isolation cloths 3161 are arranged between the output ends of adjacent guiding sections 3134; the winding shaft 3162 is rotatably connected to the limit frame 311, one end of the connecting belt 3163 is wound around the winding shaft 3162, and the other end of the connecting belt 3163 is fixed to the output end of the topmost guiding section 3134; the motor 3164 is installed on the limit frame 311 and is used to drive the winding shaft 3162 to rotate around its axis.

[0032] It should be noted that the motor 3164 drives the winding shaft 3162 to rotate, thereby driving the connecting belt 3163 to reel up, and the connecting belt 3163 drives one of the second air guide covers 313 to rotate, and with the cooperation of multiple isolation cloths 3161, drives multiple second air guide covers 313 to rotate synchronously, thereby achieving the purpose of adjusting the export angles of multiple second air guide covers 313; and when a closed cavity is formed between the isolation cloth 3161 and the adjacent second air guide covers 313, when the multiple second air guide covers 313 rotate upward, the formed closed cavity shrinks, and then squeezes the isolation cloth 3161 to bulge, so that the gap between the aluminum foil 5 and the isolation cloth 3161 can be compressed, thereby increasing the flow rate between the aluminum foil 5 and the export end of the second air guide cover 313, which is convenient for pushing the aluminum foil 5 to offset the gravity suspension.

[0033] See also Figures 2-5 A clamping mechanism 4 is provided above the guide plate 315 corresponding to the limit frame 311; the clamping mechanism 4 includes a pair of clamping plates 41 and a second torsion spring; the pair of clamping plates 41 are rotatably connected through a rotating shaft, and the second torsion spring is provided between the pair of clamping plates 41 and the rotating shaft; when the pair of clamping plates 41 loses restriction, the second torsion spring is used to drive the pair of clamping plates 41 to approach and contact each other; the clamping mechanism 4 also includes a locking mechanism 44, which is used to lock the position of the pair of clamping plates 41.

[0034] It should be noted that when the aluminum foil 5 needs to be placed in the detection cavity, the pair of clamps 41 maintains the clamping state of the top of the aluminum foil 5 through the second torsion spring, and then the aluminum foil 5 is placed in the detection cavity. It can be understood that the ends of the pair of clamps 41 are in a state of bending on both sides parallel to the guide plate 315. When the aluminum foil 5 is inserted into the detection cavity, the pair of clamps 41 are in conflict with the guide plate 315. As the clamps 41 continue to move, the pair of clamps 41 can be driven to rotate and open with the cooperation of the guide plate 315, so that the clamps 41 releases the clamping of the aluminum foil 5, and at this time the bottom of the aluminum foil 5 contacts the bottom of the detection chamber, so when the clamping plate 41 moves upward to separate from the guide plate 315, the second torsion spring can drive a pair of clamping plates 41 to approach each other and clamp the aluminum foil 5, so as to facilitate the continued movement of the clamping plate 41 to take out the aluminum foil 5; and when the clamping plate 41 contacts the guide plate 315 and releases the clamping of the aluminum foil 5, the locking mechanism 44 can be used to lock the state of the clamping plate 41, so that the clamping of the aluminum foil 5 can be released, which is convenient for corrosion detection.

[0035] Embodiment 2: The technical solution of this embodiment is different from that of Embodiment 1 in that: Please refer to Figures 12-13, It can be understood that the present application does not limit the specific structure and installation method of the locking mechanism 44. Only a feasible technical solution is provided below; the locking mechanism 44 includes a mounting seat 441, a third torsion spring 442, a threaded barrel 443, a threaded rod 444, and a handle 445; a through hole allowing the mounting seat 441 and a pair of clamping plates 41 to clamp the aluminum foil 5 to pass through is formed on the limit frame 311. The mounting seat 441 is arranged on the rotating shaft of the pair of clamping plates 41, and the third torsion spring 442 is arranged between the mounting seat 441 and the rotating shaft; the threaded barrel 443 is fixedly arranged on the mounting seat 441, the threaded rod 444 is rotatably connected to the top of the mounting seat 441 around its axis, and the threaded rod 444 is threadedly connected to the threaded barrel 443; the handle 445 is coaxially fixedly arranged on the top of the threaded rod 444.

[0036] It should be noted that when the clamping plate 41 abuts against the diversion mechanism 31, as the clamping plate 41 continues to move, the threaded rod 444 and the threaded barrel 443 are aligned, and then the threaded rod 444 is rotated, so that the locking mechanism 44 is screwed into the threaded barrel 443 in a spiral manner, thus realizing the locking of the clamping plate 41; and since the pair of clamping plates 41 are in an open state at this time, the second torsion spring is in a compressed state. Therefore, the second torsion spring can exert a reverse thrust on the locking mechanism 44 through the clamping plate 41, thereby increasing the abutting force between the threaded rod 444 and the threaded barrel 443, and preventing the problem of loosening of the locking mechanism 44.

[0037] Please refer to Figures 12-14 , the clamping mechanism 4 (such as Figure 5 shown) further includes a plurality of limiting blocks 43; a plurality of diversion holes 42 are arranged side by side on one of the clamping plates 41; the plurality of limiting blocks 43 are fixedly arranged on the other clamping plate 41, and the plurality of limiting blocks 43 are adapted to the plurality of diversion holes 42.

[0038] It should be noted that the limiting block 43 is an arc-shaped structure with the axis of the rotating shaft on the clamping plate 41 as the center of the circle, and a tapered portion is arranged at one end of the arc-shaped structure. When the pair of clamping plates 41 are opened at different angles, the degree of insertion of the tapered portion into the diversion hole 42 is different. Therefore, when the pair of clamping plates 41 are opened at different angles, the opening degree of the diversion hole 42 is different. By blocking the top of the diversion plate 315 by the clamping plate 41, the acid solution in the detection cavity can only be led out from the diversion hole 42. By controlling the opening degree of the diversion hole 42, the flow rate of the acid solution in the detection cavity is controlled, and thus the thrust on the aluminum foil 5 (such as Figure 8 shown) is accurately controlled, which is convenient for ensuring that the aluminum foil 5 floats in the detection cavity.

[0039] Please refer to Figures 1-15 , a corrosion resistance test method based on the preparation of low-voltage anode foil, using the above-mentioned corrosion resistance test device based on the preparation of low-voltage anode foil, specifically includes the following steps: Step 1, Immersion Detection: Place the aluminum foil 5 vertically in the detection cavity, and corrode the aluminum foil 5 with the acid solution in the detection cavity. Step 2, Acid Solution Circulation: Start the driving member 32, and introduce the acid solution in the detection pool 2 into the first diversion cover 312 through the driving member 32. The acid solution in the first diversion cover 312 is diverted through the second diversion cover 313 and then introduced into the detection cavity, so that the acid solution is re-introduced into the detection pool 2 through the top of the detection cavity. In this way, a continuous upward flow thrust is formed in the detection cavity, pushing the aluminum foil 5 to maintain a relatively suspended state.

[0040] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation and specific orientation structure and operation. Therefore, it cannot be understood as a limitation to the present invention. In addition, "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0041] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", etc. 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. 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 situations.

[0042] The above has described a detailed description of an embodiment of the present invention, but the content described is only the preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equal changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A corrosion resistance testing device based on low-voltage anode foil, comprising a testing machine (1) with a detection pool (2), wherein the detection pool (2) is filled with an acid solution for detecting aluminum foil (5); characterized in that: A circulation device (3) is provided in the detection pool (2), and the circulation device (3) comprises: A pair of flow guide mechanisms (31), wherein the pair of flow guide mechanisms (31) are arranged in the detection pool (2); the flow guide mechanism (31) comprises a limit frame (311), a pair of first flow guide covers (312) and two groups of second flow guide covers (313); the bottom of the detection pool (2), the limit frame (311) and the two groups of second flow guide covers (313) form a detection cavity with an open top; the detection cavity is filled with acid liquid, and the aluminum foil (5) is immersed in the acid liquid in the detection cavity; the first flow guide cover (312) and the second flow guide cover (313) are both arranged on the limit frame (311), and the interior of the first flow guide cover (312) is connected to the detection cavity through a plurality of second flow guide covers (313); and a pair of driving members (32), wherein the driving members (32) are mounted on the detection pool (2), the output ends of the driving members (32) are connected to the first flow guide cover (312), and the input ends of the driving members (32) are immersed in the acid liquid of the detection pool (2).

2. A corrosion resistance testing device based on low-voltage anode foil according to claim 1, characterized in that: The flow guiding mechanism (31) further comprises a pair of flow guiding plates (315) respectively arranged on the top of the two sets of second flow guiding covers (313) and used to limit the flow direction of the acid liquid guided from the top of the detection cavity.

3. A corrosion resistance testing device based on low-voltage anode foil according to claim 1, characterized in that: The second flow guide cover (313) comprises an accumulation chamber (3131), a filter screen (3132), a flow guide section (3133) and a guide section (3134); the accumulation chamber (3131) is connected to the interior of the first flow guide cover (312) through the filter screen (3132); the flow guide section (3133) is connected to one side of the accumulation chamber (3131), and the guide section (3134) is connected to one side of the flow guide section (3133); the interior of the first flow guide cover (312) is connected to the detection chamber through the accumulation chamber (3131), the flow guide section (3133) and the guide section (3134) in sequence.

4. A corrosion resistance testing device based on low-voltage anode foil according to claim 3, characterized in that: The two ends of the second air guide cover (313) are rotatably connected to the limit frame (311) via a connecting shaft, and a first torsion spring (314) is arranged between the second air guide cover (313) and the limit frame (311); the limit frame (311) is provided with an adjustment mechanism (316) for controlling the acid liquid outlet direction of the two groups of the second air guide covers (313).

5. A corrosion resistance testing device based on low-voltage anode foil according to claim 4, characterized in that: The adjusting mechanism (316) comprises a winding shaft (3162), a connecting belt (3163), a motor (3164) and a plurality of isolation cloths (3161); the plurality of isolation cloths (3161) are arranged between the output ends of adjacent guide sections (3134); the winding shaft (3162) is rotatably connected to the limiting frame (311), one end of the connecting belt (3163) is wound around the winding shaft (3162), and the other end of the connecting belt (3163) is fixedly arranged at the output end of the topmost guide section (3134); the motor (3164) is installed on the limiting frame (311), and is used to drive the winding shaft (3162) to rotate around its axis.

6. A corrosion resistance testing device based on low-voltage anode foil according to claim 2, characterized in that: A clamping mechanism (4) is arranged above the guide plate (315) on the limiting frame (311); the clamping mechanism (4) comprises a pair of clamping plates (41) and a second torsion spring; the pair of clamping plates (41) are rotatably connected via a rotating shaft, and the second torsion spring is arranged between the pair of clamping plates (41) and the rotating shaft; when the pair of clamping plates (41) lose their restriction, the second torsion spring is used to drive the pair of clamping plates (41) to approach each other and collide with each other.

7. A corrosion resistance testing device based on low-voltage anode foil according to claim 6, characterized in that: The clamping mechanism (4) further comprises a plurality of limit blocks (43); a plurality of guide holes (42) are arranged side by side on one of the clamping plates (41); the plurality of limit blocks (43) are fixed to another clamping plate (41), and the plurality of limit blocks (43) are adapted to fit the plurality of guide holes (42).

8. A corrosion resistance testing device based on low-voltage anode foil according to claim 7, characterized in that: The clamping mechanism (4) further comprises a locking mechanism (44) for locking the position of a pair of clamping plates (41).

9. A corrosion resistance testing device based on low-voltage anode foil according to claim 8, characterized in that: The locking mechanism (44) comprises a mounting seat (441), a third torsion spring (442), a threaded barrel (443), a threaded rod (444) and a handle (445); a through hole is provided on the limiting frame (311) for allowing the mounting seat (441) and the pair of clamping plates (41) to pass through to clamp the aluminum foil (5); the mounting seat (441) is arranged on a rotating shaft on the pair of clamping plates (41); the third torsion spring (442) is arranged between the mounting seat (441) and the rotating shaft; the threaded barrel (443) is fixedly mounted on the mounting seat (441); the threaded rod (444) is rotatably connected to the top of the mounting seat (441) around its axis, and the threaded rod (444) is threadedly connected to the threaded barrel (443); and the handle (445) is coaxially fixedly mounted on the top of the threaded rod (444).

10. A corrosion resistance test method based on low-voltage anode foil preparation, characterized in that: The corrosion resistance testing device prepared based on the low-voltage anode foil according to any one of claims 1 to 9 specifically comprises the following steps: Step 1: Immersion testing: placing the aluminum foil (5) in a vertical position in the testing chamber, and corroding the aluminum foil (5) with the acid in the testing chamber; Step 2, acid liquid circulation: start the driving member (32), and introduce the acid liquid in the detection pool (2) into the first flow guide cover (312) through the driving member (32). The acid liquid in the first flow guide cover (312) is diverted through the second flow guide cover (313) and then introduced into the detection cavity, so that the acid liquid is re-introduced into the detection pool (2) through the top of the detection cavity. In this way, a continuous upward flow thrust is formed in the detection cavity, pushing the aluminum foil (5) to maintain a relatively suspended state.

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