An industrial large-scale plate coating machine acid spraying device

Abstract

The application discloses a novel industrial large-scale plate coating machine acid spraying device, which comprises an acid spraying roller and an acid inlet pipe, the outer surface of the acid spraying roller is covered with a roller cloth cover, a plurality of rows of micropores are arranged in the circumferential direction of the surface of the acid spraying roller, an acid supply assembly is arranged in the acid spraying roller, the acid supply assembly comprises an acid spraying pipe and a plurality of acid storage bins, one end of the acid spraying pipe is connected with the acid inlet pipe, and a plurality of connecting pipes are arranged between the acid spraying roller and the acid storage bins. After the acid spraying roller drives the roller cloth cover to rotate, the surface of the roller cloth cover passing through the spraying position is supplemented with liquid in an active mode until the position is fully supplemented before reaching the spraying position again. Meanwhile, the acid inlet amount of the acid liquid can be adjusted to match different rotating speeds of the acid spraying roller, so that the acid spraying device can quantitatively spray the acid liquid on the surface of the passing polar plate, and the solidification effect of the lead paste on the surface of the polar plate is increased.

Description

Technical Field

[0001] This invention belongs to the field of battery production technology, and in particular relates to a novel industrial large-scale plate coating machine acid leaching device. Background Technology

[0002] The quality of lead-acid battery plates has a significant impact on the quality and lifespan of the battery. As a key step in the plate processing, the quality of the coating largely determines the quality of the plate. During the coating process, a thin layer of lead sulfate needs to be formed on the plate surface through an acid leaching process to enhance the curing effect of the lead paste on the plate surface.

[0003] Patent CN201820507968.7 mentions an internal acid-coating roller and a machine-applied acid-coating device. The acid-coating roller rotates after being driven by an external power device. The acid collected at the bottom of the acid-coating roller flows out from the opening on the surface of the acid-coating roller to the surface of the roller sleeve under the action of gravity. The acid adsorbed in the roller sleeve is used to coat the battery plates. However, the passive acid replenishment only allows the acid to be adsorbed in one-third or one-quarter of the bottom of the roller sleeve. If the acid-coating roller rotates too fast, the amount of acid adsorbed in the roller sleeve will be insufficient, which will reduce the amount of acid sprayed and reduce the curing effect of the lead paste. Summary of the Invention

[0004] This invention addresses the problem of insufficient spray volume in existing passive acid replenishment methods, which leads to reduced curing effect of lead paste. The following technical solution is proposed:

[0005] A novel industrial large-scale plate coating machine acid leaching device includes an acid leaching roller and an acid inlet pipe. The outer surface of the acid leaching roller is covered with a roller cloth sleeve. Several rows of micro-holes are circumferentially opened on the surface of the acid leaching roller. An acid feeding component is arranged inside the acid leaching roller. The acid feeding component includes an acid leaching pipe and multiple acid storage chambers. One end of the acid leaching pipe is connected to the acid inlet pipe. Multiple connecting pipes are arranged between the acid leaching roller and the acid storage chambers.

[0006] The external pump transports the stored acid from the acid inlet pipe to the acid spraying pipe. After passing through multiple sets of connecting pipes, the acid is distributed to fill multiple acid storage chambers. The acid flows out from the micropores into the roller sleeve in an active manner. A certain amount of acid is evenly absorbed on the entire surface of the roller sleeve. After the acid spraying roller rotates, it sprays a certain amount of acid onto the surface of the electrode plate, thereby increasing the curing effect of the lead paste on the surface of the electrode plate.

[0007] As a preferred embodiment of the above technical solution, the acid supply assembly further includes an adjustment section, which includes two pushers and multiple movable frames. The middle of the multiple connecting pipes in the same group is fixedly connected to the corresponding movable frame. The connecting pipe is provided with an adjustment component, and the pushers push the movable frame that has passed through the bottom and top positions vertically upward.

[0008] As a preferred embodiment of the above technical solution, the pushing component includes two guide push blocks and multiple limiting balls. The surface of the guide push blocks is provided with guide grooves, and the limiting balls are fixedly connected to the corresponding ends of the movable frame.

[0009] As a preferred embodiment of the above technical solution, the connecting pipe consists of a central rigid pipe and two end flexible pipes. The adjusting component is fixedly connected to the central rigid pipe, and the ends of the two flexible pipes are threadedly connected to the acid leaching roller and the acid storage tank.

[0010] As a preferred embodiment of the above technical solution, the end of the acid rinsing pipe and the acid inlet pipe are rotated and sealed, and both ends of the acid rinsing pipe are rotatably inserted into the machine frame.

[0011] As a preferred embodiment of the above technical solution, the roller sleeve is made of microfiber material, and the roller sleeve undergoes elastic deformation after being squeezed.

[0012] The beneficial effects of this invention are as follows:

[0013] 1. After the acid-spraying roller drives the roller cloth sleeve to rotate, it actively replenishes the surface of the roller cloth sleeve that passes through the spray position until the position is fully replenished again before the spray position. At the same time, the acid-spraying device can spray acid on the surface of the electrode plate in a quantitative manner by adjusting the acid-spraying amount to match the different rotation speeds of the acid-spraying roller, thereby increasing the curing effect of the lead paste on the electrode plate surface.

[0014] 2. Under the push of the pusher, the moving frame passing through the top and bottom of the acid-spraying roller is lifted upward, and the corresponding connecting pipe moves accordingly, moving the adjusting component. The adjusting component at the top seals the outlet of the acid-spraying pipe, and the adjusting component at the bottom enlarges the outlet of the acid-spraying pipe. Without affecting the acid flow rate in other connecting pipes, the increased flow rate in the bottom connecting pipe sprays out more acid, so that the surface of the electrode plate is sprayed with more acid than required, thereby ensuring the spraying effect on the electrode plate. Attached Figure Description

[0015] Figure 1 The diagram shown is a schematic representation of the overall structure of the embodiment;

[0016] Figure 2 The image shown is a left sectional view of the acid-laden roller in the embodiment;

[0017] Figure 3 The image shown is a right sectional view of the acid-laden roller in the embodiment;

[0018] Figure 4 The diagram shown is a schematic representation of the installation of the connecting pipe in the embodiment;

[0019] Figure 5 The diagram shown is a schematic representation of the various parts of the connecting pipe in the embodiment;

[0020] Figure 6 The image shown is a right view of the pusher in the embodiment.

[0021] In the diagram: 10, acid leaching roller; 11, micropores; 20, acid inlet pipe; 30, roller cover; 40, frame; 51, acid leaching pipe; 52, acid storage tank; 53, connecting pipe; 531, rigid pipe; 532, flexible pipe; 541, moving frame; 542, adjusting component; 551, guide push block; 552, guide groove; 553, limit ball. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0023] Figures 1-3 A novel industrial large-scale plate coating machine acid leaching device includes an acid leaching roller 10 and an acid inlet pipe 20. The outer surface of the acid leaching roller 10 is covered with a roller cloth sleeve 30. Several rows of micro holes 11 are circumferentially opened on the surface of the acid leaching roller 10. An acid feeding assembly is provided inside the acid leaching roller 10. The acid feeding assembly includes an acid leaching pipe 51 and multiple acid storage chambers 52. One end of the acid leaching pipe 51 is connected to the acid inlet pipe 20. Multiple connecting pipes 53 are provided between the acid leaching roller 10 and the acid storage chambers 52.

[0024] The external pump transports the stored acid from the acid inlet pipe 20 to the acid spraying pipe 51. After passing through multiple sets of connecting pipes 53, the acid is distributed to fill multiple acid storage chambers 52. The acid flows out from the micropores 11 into the roller cloth sleeve 30 in an active manner. A certain amount of acid is uniformly absorbed on the entire surface of the roller cloth sleeve 30. After the acid spraying roller 10 rotates, it sprays acid quantitatively onto the surface of the electrode plate, thereby increasing the curing effect of the lead paste on the surface of the electrode plate.

[0025] Before the spraying operation, the external pump transports the stored acid from the acid inlet pipe 20 to the acid spraying pipe 51. The acid enters through multiple sets of connecting pipes 53 and is diverted to the acid storage tank 52 until the acid storage tank 52 is full. The acid flows out from the micropores 11 into the roller cloth sleeve 30 in an active manner. A certain amount of acid is evenly absorbed on the entire surface of the roller cloth sleeve 30. Then, the external conveying device transports the electrode plates to be sprayed in batches to the bottom of the acid spraying roller 10. The bottom of the acid spraying roller 10 is the spraying position. The acid spraying pipe 51 is driven to rotate by the external power mechanism. The acid spraying roller 10 then drives the roller cloth sleeve 30 to rotate and spray the electrode plates that pass by. After the electrode plates are sprayed, they are removed from the external conveying device and left to stand for a period of time. The lead paste on the surface of the electrode plates is then cured.

[0026] After the acid-spraying roller 10 drives the roller cloth sleeve 30 to rotate, it actively replenishes the surface of the roller cloth sleeve 30 that passes the spray position until it is fully replenished again before the spray position. At the same time, by adjusting the amount of acid entering the plate to match the different rotation speeds of the acid-spraying roller 10, the acid-spraying device can quantitatively spray acid onto the surface of the plate, thereby increasing the curing effect of the lead paste on the plate surface.

[0027] Figures 2-4 In the process, the acid supply assembly also includes an adjustment part, which includes two pushers and multiple moving frames 541. The middle part of the multiple connecting pipes 53 in the same group is fixedly connected to the corresponding moving frame 541. An adjustment part 542 is provided inside the connecting pipe 53. The pushers push the moving frame 541 that has passed through the bottom position and the top position vertically upward.

[0028] The pusher includes two guide push blocks 551 and multiple limiting balls 553. The surface of the guide push block 551 is provided with a guide groove 552, and the limiting ball 553 is fixedly connected to the end of the corresponding moving frame 541.

[0029] As the acid-leaching roller 10 drives the roller sleeve 30 to rotate, multiple moving frames 541 pass through the top and bottom of the acid-leaching roller 10 in sequence. Before the moving frame 541 passes the bottom position of the acid-leaching roller 10, the limiting balls 553 at both ends of the moving frame 541 enter the guide groove 552 of the guide push block 551. Under the guidance of the guide groove 552, the two limiting balls 553 push the moving frame 541 upward, and multiple connecting pipes 53 move and deform accordingly. The inverted conical adjustment piece 542 leaves the outlet position of the acid-leaching pipe 51, increasing the passage of acid liquid. During this process, the moving frame 541 at the top position is also pushed upward, and the corresponding inverted conical adjustment piece 542 seals the outlet position of the acid-leaching pipe 51. The flow rate of the bottom connecting pipe 53 increases, spraying out more acid liquid, while the flow rate of acid liquid in other connecting pipes 53 remains unchanged.

[0030] Driven by the pusher, the moving frame 541 at the top and bottom of the acid-spraying roller 10 is lifted upward, and the corresponding connecting pipe 53 moves accordingly, moving the adjusting member 542. The adjusting member 542 at the top seals the outlet of the acid-spraying pipe 51, and the adjusting member 542 at the bottom enlarges the outlet of the acid-spraying pipe 51. Without affecting the acid flow rate in other connecting pipes 53, the increased flow rate in the bottom connecting pipe 53 sprays out more acid, so that the electrode surface is sprayed with more acid than required, thereby ensuring the spraying effect on the electrode.

[0031] Figure 5 In this process, the connecting pipe 53 consists of a central rigid pipe 531 and two end flexible pipes 532. The adjusting component 542 is fixedly connected to the central rigid pipe 531, and the ends of the two flexible pipes 532 are threadedly connected to the acid leaching roller 10 and the acid storage tank 52.

[0032] The connecting pipe 53 is fixedly connected to the movable frame 541 through the rigid pipe 531. When the movable frame 541 moves, the soft pipe 532 at one end of the connecting pipe 53 is squeezed and deformed, and the other end of the connecting pipe 53 is stretched and deformed. The connecting pipe 53 can deform as the movable frame 541 moves, so that the adjusting member 542 can move along with the movable frame 541.

[0033] Figure 1 In this process, the end of the acid leaching pipe 51 is rotated and sealed with the acid inlet pipe 20. Both ends of the acid leaching pipe 51 are rotatably inserted into the inside of the frame 40. The frame 40 is provided with bearing components at the insertion points of the acid leaching pipe 51.

[0034] Because the end of the acid inlet pipe 51 and the acid inlet pipe 20 are rotated seals, the rotation of the acid inlet pipe 51 does not affect the liquid inlet of the acid inlet pipe 20 to the acid inlet pipe 51, while ensuring the sealing performance between the acid inlet pipe 20 and the acid inlet pipe 51.

[0035] Figures 2-3 In this process, the roller sleeve 30 is made of microfiber material, and the roller sleeve 30 undergoes elastic deformation after being squeezed.

[0036] The microfiber roller sleeve 30 has better water absorption because it can undergo elastic deformation when squeezed. After the roller sleeve 30 comes into contact with the electrode plate, it squeezes out some of the acid liquid, ensuring the amount of acid liquid sprayed.

[0037] To test the curing effect of lead paste on the electrode surface, a drop test is required. The test method is as follows: weigh the electrode before dropping it, drop it freely from a height of 1m three times, weigh it after each drop, and calculate the weight loss after three drops. The mass loss rate (paste shedding rate) before and after the drop is the standard for measuring the electrode strength. The control group uses electrode plates produced by conventional acid leaching equipment. The test results are shown in the comparison table.

[0038]

[0039]

[0040] As can be seen from the table above, after three drop tests, the average mass loss rate (paste removal rate) of the electrode plate produced by spraying in this embodiment was 0.31%, while the mass loss rate (paste removal rate) of the control group electrode plate after three drop tests was 0.87%. The mass loss rate of the control group is much higher than the average mass loss rate of the embodiment. The test results show that the electrode plate produced by this invention has significantly improved curing quality and excellent overall mechanical properties.

[0041] Working principle: Before the spraying operation, the external pump delivers the stored acid from the acid inlet pipe 20 to the acid spraying pipe 51. The acid enters through multiple sets of connecting pipes 53 and is diverted to the acid storage tank 52 until the acid storage tank 52 is full. The acid flows out from the micropores 11 into the roller cloth sleeve 30 in an active manner. A certain amount of acid is evenly absorbed on the entire surface of the roller cloth sleeve 30. Then, the external conveying device transfers the plates to be sprayed in batches to the bottom of the acid spraying roller 10. Subsequently, the acid spraying pipe 51 is driven to rotate by the external power mechanism, and the acid spraying roller 10 drives the roller cloth sleeve 30 to rotate accordingly.

[0042] Multiple movable frames 541 pass sequentially through the top and bottom of the acid-leaching roller 10 as the roller rotates. Before the movable frame 541 passes the bottom of the acid-leaching roller 10, the limiting balls 553 at both ends of the movable frame 541 enter the guide grooves 552 of the guide push block 551. Under the guidance of the guide grooves 552, the two limiting balls 553 push the movable frame 541 upward. As the movable frame 541 moves, the soft tube 532 at one end of the connecting tube 53 is squeezed and deformed. The other end of the connecting tube 53... One end is stretched and deformed, and the connecting tube 53 can deform as the moving frame 541 moves. The inverted conical adjusting member 542 moves away from the outlet position of the acid-spraying tube 51, increasing the passage of acid. During this process, the moving frame 541 at the top position is also pushed up, and the corresponding inverted conical adjusting member 542 seals the outlet position of the acid-spraying tube 51. The flow rate of the bottom connecting tube 53 increases, spraying out more acid, while the flow rate of acid in other connecting tubes 53 remains unchanged.

[0043] The acid-spraying roller 10 drives the roller cloth sleeve 30 to rotate and spray the passing electrode plates. After the sprayed electrode plates are removed from the external conveying device, they are left to stand for a period of time, and the lead paste on the surface of the electrode plates is solidified.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. An acid-leaching device for a large industrial plate coating machine, comprising an acid-leaching roller (10) and an acid inlet pipe (20), wherein the outer surface of the acid-leaching roller (10) is covered with a roller cloth sleeve (30), and a plurality of rows of micro-holes (11) are circumferentially opened on the surface of the acid-leaching roller (10), characterized in that, The acid-spraying roller (10) is equipped with an acid-feeding assembly, which includes an acid-spraying pipe (51) and multiple acid storage chambers (52). One end of the acid-spraying pipe (51) is connected to the acid inlet pipe (20), and multiple connecting pipes (53) are provided between the acid-spraying roller (10) and the acid storage chambers (52). The external pump transports the stored acid from the acid inlet pipe (20) to the acid spraying pipe (51), and then through multiple sets of connecting pipes (53) to fill multiple acid storage chambers (52). The acid flows out from the micropores (11) into the roller cloth sleeve (30) in an active manner. A certain amount of acid is uniformly adsorbed on the entire surface of the roller cloth sleeve (30). After the acid spraying roller (10) rotates, it sprays acid quantitatively onto the surface of the electrode plate, thereby increasing the curing effect of the lead paste on the surface of the electrode plate. The acid supply assembly also includes an adjustment part, which includes two pushers and multiple movable frames (541). The middle part of the multiple connecting pipes (53) in the same group is fixedly connected to the corresponding movable frame (541). An adjustment part (542) is provided inside the connecting pipe (53). The pushers push the movable frame (541) that has passed through the bottom position and the top position vertically upward. The pusher includes two guide push blocks (551) and multiple limiting balls (553). The guide push blocks (551) have guide grooves (552) on their surfaces, and the limiting balls (553) are fixedly connected to the ends of the corresponding moving frames (541). The connecting pipe (53) consists of a central rigid pipe (531) and two end flexible pipes (532). The adjusting component (542) is fixedly connected to the central rigid pipe (531), and the ends of the two flexible pipes (532) are threadedly connected to the acid rinsing roller (10) and the acid storage tank (52).

2. The industrial large-scale plate coating machine acid leaching device according to claim 1, characterized in that, The end of the acid rinsing tube (51) is rotated and sealed with the acid inlet tube (20), and both ends of the acid rinsing tube (51) are rotatably inserted into the machine frame (40).

3. The industrial large-scale plate coating machine acid leaching device according to claim 1, characterized in that, The roller sleeve (30) is made of microfiber material, and the roller sleeve (30) undergoes elastic deformation after being squeezed.

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