A device for eliminating bubbles in lithium battery slurry

Abstract

The present invention provides a device for eliminating bubbles in lithium battery slurry, comprising a feed box, a coating scraper box and a feed pump, a feeding pipe is installed on one side of the top of the feed box, and the feed pump is installed on one side of the bottom of the feed box, a feed pipe is installed between the input end of the feed pump and the bottom of the feed box, and a discharge pipe is installed at the output end of the feed pump, the other end of the discharge pipe is connected to the coating scraper box, a reflux box is provided on the other side of the top of the feed box, and a buffer box is provided on one side of the top of the reflux box, and a conveying pipe is installed at the outlet end of the bottom of the buffer box. Compared with the existing technology, through the coordinated action of the reflux box, the spray assembly, the buffer box and the rotating assembly, bubbles can be quickly eliminated in the actual production process, thereby improving the process window, so that it can achieve the advantages of speed increase, improved slurry utilization, stable product quality, etc., and a large span of improvement space is achieved to achieve low-cost production advantages.

Description

Technical Field

[0001] The present invention relates to the technical field of coating industry, in particular to a device for eliminating bubbles in lithium battery slurry. Background Art

[0002] With the continuous improvement of various lithium battery diaphragms, the production efficiency of coated diaphragms has also been improved. Technologies such as high-speed coating and ultra-wide coating are constantly iterating. In the case of high-speed and ultra-wide coating, the feeding system becomes a bottleneck. The faster the feeding speed, the faster the slurry reflux speed impacts the slurry surface, thereby generating bubbles (such as putting laundry in a basin, the bubbles generated by the impact of water). The mechanisms for the generation of slurry bubbles are mainly the following: dissolved gas release: There is dissolved gas in the slurry. When the slurry is heated or subjected to force, the dissolved gas will gradually be released to form bubbles; liquid volatilization: the liquid component in the slurry will volatilize when heated or subjected to force, and the volatilized liquid will form bubbles; chemical reaction: the chemical components in the slurry undergo chemical reactions under specific conditions to generate gas and form bubbles; stirring: when the slurry is stirred, the gas will be stirred into the slurry to form bubbles.

[0003] The continuous accumulation of bubbles causes overflow waste and also causes bubbles to be supplied to the coating area, resulting in defects such as bright spots and coating omissions in the coated products, which makes the room for speed improvement smaller and smaller, and the quality of the coated products cannot be guaranteed. The traditional feeding system equipment and methods cannot keep up with the development of the market, and the efficiency is greatly reduced, which affects the increase in manufacturing costs and the technology cannot be comprehensively improved. Diaphragm manufacturers usually use other ways to transfer bubbles for scrapping. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a device for eliminating bubbles in lithium battery slurry to solve the problems raised in the above background technology. The present invention has a novel structure. Through the cooperation of the reflux box, spray assembly, buffer box and rotating assembly, bubbles can be quickly eliminated in the actual production process, thereby improving the process window, so that it can achieve the advantages of speed increase, improved slurry utilization, stable product quality, etc., with a large span of improvement space, to achieve low-cost production advantages.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: a device for eliminating bubbles in lithium battery slurry, comprising a feed box, a coating scraper box and a feed pump, a feeding pipe is installed on one side of the top of the feed box, and the feed pump is installed on one side of the bottom of the feed box, a feed pipe is installed between the input end of the feed pump and the bottom of the feed box, and a discharge pipe is installed at the output end of the feed pump, the other end of the discharge pipe is connected to the coating scraper box, a reflux box is provided on the other side of the top of the feed box, and a buffer box is provided on one side of the top of the reflux box, and the outlet end of the bottom of the buffer box is provided A delivery pipe is installed, and the delivery pipe passes through the reflux box. A reflux pipe is installed on the top of the other side of the buffer box, and the reflux pipe is connected to the coating scraper box. A rotating component is provided inside the feed box, and the rotating component includes a second drive shaft. The second drive shaft is rotatably installed inside the feed box through a bearing, and a sliding frame is slidably connected to the surface of the second drive shaft. Horizontal plates are fixed on both sides of the sliding frame, and blades are symmetrically fixed on both sides of the bottom of the horizontal plate. A spray component is provided inside the reflux box, and the spray component includes a spray plate, and the spray plate is arranged at the bottom of the outlet end of the delivery pipe.

[0006] Furthermore, reflux ports are provided on both sides of the bottom of the coating scraper box, and the reflux ports are connected to the reflux pipe through a three-way valve. A feed port is provided in the middle position of the bottom of the coating scraper box, and the feed port is connected to the discharge pipe.

[0007] Furthermore, the rotating component also includes a slide groove, and the slide groove is symmetrically opened on the surface of the second drive shaft, and the slide frame slides along the slide groove. A swivel is installed on the top of the slide frame through a bearing, and a connecting pipe is provided on the surface of the swivel, and a bellows is fixed between the feeding pipe and the connecting pipe.

[0008] Furthermore, the connecting pipe is communicated with the interior of the sliding frame and the transverse plate, and a through hole is equidistantly provided at the bottom of the transverse plate between the two blades.

[0009] Furthermore, a first motor is fixed on the outer wall of the top of the feed box, and the output end of the first motor is fixedly connected to the second drive shaft. A disc is rotatably sleeved on the top of the second drive shaft through a bearing, and electric push rods are fixed on both sides of the bottom of the disc. The extended end of the electric push rod is transmission-connected to the horizontal plate.

[0010] Furthermore, a circular slide rail is fixed to the extended end of the electric push rod, a slider is fixed to the position of the top of the horizontal plate corresponding to the circular slide rail, and the slider slides along the inside of the circular slide rail.

[0011] Furthermore, a second motor is fixed on the top outer wall of the reflow box, and the output end of the second motor penetrates into the interior of the reflow box and is fixed with a first drive shaft, and the spray plate is fixed to the first drive shaft.

[0012] Furthermore, the spray assembly also includes a conical surface, a conical surface is fixed on the top of the spray plate, nozzles are equidistantly arranged on the bottom of the spray plate, connecting holes are opened at positions of the conical surface corresponding to the nozzles, and a fence is fixed on the periphery of the conical surface.

[0013] Furthermore, a box door is installed on the outside of the buffer box by rotating through a hinge, and installation grooves are provided on the inner walls on both sides of the buffer box. Installation plates are slidably inserted into the installation grooves, and multiple groups of inclined plates are cross-fixed between the two groups of the installation plates, and filter grooves are provided on the surfaces of the inclined plates. Grilles are fixed on the bottoms of the two groups of the installation plates.

[0014] Furthermore, mounting brackets are fixed to the bottom of the feed box and the reflux box, and the bottom of the reflux box is flush with the position of the feeding pipe. A connecting pipe is installed at the bottom of the reflux box, and the other end of the connecting pipe is connected to the side of the feed box.

[0015] Beneficial effects of the present invention: A device for eliminating bubbles in lithium battery slurry of the present invention comprises a feed box; a first motor; a feeding pipe; a first driving shaft; a mounting frame; a reflux box; a second motor; a connecting pipe; a buffer box; a reflux pipe; a box door; a mounting groove; a mounting plate; a slant plate; a filter tank; a grid frame; a conveying pipe; a coating scraper box; a reflux port; a feed port; a feed pump; a discharge pipe; a feed pipe; a rotating assembly; a second driving shaft; a disc; an electric push rod; a slide frame; a horizontal plate; a blade; a bellows; a connecting pipe; a slide groove; a swivel; a through hole; a circular slide rail; a slider; a spray assembly; a spray plate; a nozzle; a conical surface; a connecting hole; a barrier;

[0016] 1. The feed box and the return box of the present invention are fixed at different heights by the installation of the mounting frame, and then connected by a connecting pipe. According to the liquid level difference principle, the return box enters from the top and exits from the bottom, and its placement position is higher than the feed box, thereby forming a liquid level difference, allowing the slurry to flow downstream.

[0017] 2. The slurry returned through the reflux pipe of the present invention is drained through multiple groups of cross-arranged inclined plates to reduce the impact force, and at the same time is filtered through the filter tank on the inclined plate, and then sent to the reflux box through the delivery pipe.

[0018] 3. The present invention drives the first drive shaft to rotate by the second motor, thereby driving the spray plate and the cone surface to rotate. The slurry is sprayed inside the reflux box through the connecting holes and the nozzles. The direct outflow of the slurry is prevented by the enclosure, and the impact force of the slurry reflux is slowed down. The slurry is quickly diffused by the rotary spraying method to avoid the generation of bubbles by impact. If a small number of bubbles appear, the spray-type diffusion can also break the bubbles.

[0019] 4. The present invention drives the second drive shaft, the slide frame and the cross plate to rotate through the first motor, and the blade scrapes the bubbles generated on the liquid surface. The slider is connected to the circular slide rail, and the rotation of the cross plate will not cause movement interference due to the electric push rod. The electric push rod drives the cross plate to move up, and the slider slides along the slide groove to adjust the position of the cross plate and the blade. A liquid level sensor is set in the feed box, and the blade position is driven and adjusted by the liquid level sensor to keep it always flush with the liquid surface to scrape the surface bubbles.

[0020] 5. Compared with the existing technology, the present invention can quickly eliminate bubbles in the actual production process through the cooperation of the reflux box, spray assembly, buffer box and rotating assembly, thereby improving the process window, so as to achieve the advantages of speed increase, improved slurry utilization, stable product quality, etc., and a large span of improvement space is achieved to achieve the low-cost production advantage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a device for eliminating bubbles in lithium battery slurry according to the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of a feed box and a reflux box of a device for eliminating bubbles in lithium battery slurry according to the present invention;

[0023] Figure 3 This is a schematic diagram of the bottom structure of a coating scraper box of a device for eliminating bubbles in lithium battery slurry according to the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of a buffer box of a device for eliminating bubbles in lithium battery slurry according to the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a rotating assembly of a device for eliminating bubbles in lithium battery slurry according to the present invention;

[0026] Figure 6 This is a second schematic diagram of the structure of a rotating assembly of a device for eliminating bubbles in lithium battery slurry according to the present invention;

[0027] Figure 7 This is a third schematic diagram of the structure of a rotating assembly of a device for eliminating bubbles in lithium battery slurry according to the present invention;

[0028] Figure 8 The figure is a schematic structural diagram of a spray assembly of a device for eliminating bubbles in lithium battery slurry according to the present invention.

[0029] Figure: 1, feed box; 11, first motor; 12, feeding pipe; 2, mounting frame; 3, reflux box; 31, second motor; 32, connecting pipe; 33, first drive shaft; 4, buffer box; 41, reflux pipe; 42, box door; 43, mounting slot; 44, mounting plate; 45, inclined plate; 46, filter tank; 47, grid frame; 48, delivery pipe; 5, coating scraper box; 51, reflux port; 52, feed port; 6, feed pump; 61 , discharge pipe; 62, feed pipe; 7, rotating assembly; 71, second drive shaft; 72, disc; 73, electric push rod; 74, slide frame; 75, cross plate; 76, blade; 77, bellows; 78, connecting pipe; 79, slide groove; 710, swivel; 711, through hole; 712, circular slide rail; 713, slider; 8, spray assembly; 81, spray plate; 82, nozzle; 83, cone surface; 84, connecting hole; 85, enclosure. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] See also Figures 1 to 8 The present invention provides a technical solution: a device for eliminating bubbles in lithium battery slurry, comprising a feed box 1, a coating scraper box 5 and a feed pump 6, wherein a feeding pipe 12 is installed on one side of the top of the feed box 1, and the feed pump 6 is installed on one side of the bottom of the feed box 1, a feed pipe 62 is installed between the input end of the feed pump 6 and the bottom of the feed box 1, and a discharge pipe 61 is installed at the output end of the feed pump 6, the other end of the discharge pipe 61 is connected to the coating scraper box 5, a reflux box 3 is provided on the other side of the top of the feed box 1, and a buffer box 4 is provided on one side of the top of the reflux box 3, a delivery pipe 48 is installed at the outlet end of the bottom of the buffer box 4, and the delivery pipe 48 penetrates into the interior of the reflux box 3, a reflux pipe 41 is installed on the top of the other side of the buffer box 4, and the reflux pipe 41 is connected to the coating scraper box 5, and a rotary The rotating assembly 7 includes a second drive shaft 71, which is rotatably mounted inside the feed box 1 through a bearing, and a sliding frame 74 is slidably connected to the surface of the second drive shaft 71, and cross plates 75 are fixed on both sides of the sliding frame 74, and blades 76 are symmetrically fixed on both sides of the bottom of the cross plate 75. A spray assembly 8 is provided inside the return box 3, and the spray assembly 8 includes a spray plate 81, and the spray plate 81 is arranged at the bottom of the outlet end of the delivery pipe 48. When the device is used, the slurry in the feed box 1 is transported to the coating scraper box 5 through the feed pump 6, and the unused slurry in the coating scraper box 5 is sent to the return box 3 after being buffered by the buffer box 4 through the return pipe 41, and the slurry is quickly diffused by the spray assembly 8 and sent to the inside of the feed box 1, and the bubbles generated in the feed box 1 are scraped by the rotating assembly 7.

[0032] In this embodiment, reflux ports 51 are provided on both sides of the bottom of the coating scraper box 5, and the reflux ports 51 are connected to the reflux pipe 41 through a three-way valve. A feed port 52 is provided in the middle position of the bottom of the coating scraper box 5, and the feed port 52 is connected to the discharge pipe 61. The coating scraper box 5 is installed inside the existing coating machine, and the slurry is fed in and refluxed out through the reflux pipe 41 and the feed pipe 62.

[0033] The cam 76 is connected with the second drive shaft 71 by the guide rail 711, and the guide rail 712 is connected with the second drive shaft 71 by the guide rail 713. The top of the cross plate 75 is fixed with a slider 713 at the position corresponding to the circular slide rail 712, and the slider 713 slides along the inside of the circular slide rail 712, and the feeding tube 12 is connected to the connecting pipe 78 through the bellows. The interior of the slide frame 74 and the cross plate 75 is hollow, and the slurry fed by the connecting pipe 78 is fed into the cross plate 75 through the slide frame 74 and then sent out through the through hole 711. The first motor 11 drives the second drive shaft 71, the slide frame 74 and the cross plate 75 to rotate, and the blade 76 scrapes the bubbles generated on the liquid surface. Through the connection between the slider 713 and the circular slide rail 712, the rotation of the cross plate 75 will not cause movement interference due to the electric push rod 73. The electric push rod 73 drives the cross plate 75 to move upward, and the slider 713 slides along the slide groove 79 to adjust the position of the cross plate 75 and the blade 76. A liquid level sensor is set in the feed box 1, which drives and adjusts the position of the blade 76 through the liquid level sensor to keep it flush with the liquid surface at all times so as to scrape off the surface bubbles.

[0034] In this embodiment, a second motor 31 is fixed on the outer wall of the top of the return box 3, and the output end of the second motor 31 penetrates into the return box 3 and is fixed with a first drive shaft 33, the spray plate 81 is fixed to the first drive shaft 33, and the spray assembly 8 also includes a conical surface 83, a conical surface 83 is fixed on the top of the spray plate 81, and nozzles 82 are equidistantly arranged on the bottom of the spray plate 81, and the conical surface 83 is provided with a connecting hole 84 corresponding to the position of the nozzle 82, and a baffle 85 is fixed on the periphery of the conical surface 83. The slurry returned by the conveying pipe 48 falls on the top of the conical surface 83, and the second motor 31 drives the first drive shaft 33 to rotate, thereby driving the spray plate 81 and the conical surface 83 to rotate, and the slurry is sprayed into the return box 3 through the connecting hole 84 and the nozzle 82. The baffle 85 prevents the slurry from directly flowing out, slows down the impact force of the slurry backflow, and quickly diffuses through the rotating spraying method to avoid bubbles generated by the impact. If a small number of bubbles appear, the spray-type diffusion can also break the bubbles.

[0035] In this embodiment, a box door 42 is installed on the outer side of the buffer box 4 by rotating through a hinge, and mounting grooves 43 are provided on the inner walls on both sides of the buffer box 4. A mounting plate 44 is slidably inserted in the mounting groove 43. A plurality of groups of inclined plates 45 are cross-fixed between two groups of the mounting plates 44, and a filter groove 46 is provided on the surface of the inclined plate 45. A grid frame 47 is fixed to the bottom of the two groups of the mounting plates 44. The slurry returned through the return pipe 41 is drained through the plurality of groups of cross-arranged inclined plates 45 to reduce the impact force, and at the same time is filtered through the filter groove 46 on the inclined plate 45, and then sent to the return box 3 through the delivery pipe 48. The box door 42 is lifted up and opened by a technician, and the mounting plate 44 and the inclined plate 45 are taken out from the mounting groove 43 of the buffer box 4 through the grid frame 47 to clean the filtered impurities. The buffer box 4 can be connected to the feed box 1 or the return box 3 through a connecting frame (not shown in the figure).

[0036] In this embodiment, the bottom of the feed box 1 and the return box 3 are fixed with a mounting bracket 2, and the bottom of the return box 3 is flush with the position of the feeding pipe 12. A connecting pipe 32 is installed at the bottom of the return box 3, and the other end of the connecting pipe 32 is connected to the side of the feed box 1. The feed box 1 and the return box 3 are fixed at different heights through the mounting bracket 2 and are connected through the connecting pipe 32. According to the principle of liquid level difference, the return box 3 enters from the top and exits from the bottom, and its placement position is higher than the feed box 1, thereby forming a liquid level difference, allowing the slurry to flow downstream.

[0037] When the device is in use, the slurry in the feed box 1 is transported to the inside of the coating scraper box 5 through the feed pump 6. The unused slurry in the coating scraper box 5 is sent back through the return pipe 41 and drained through multiple groups of cross-arranged inclined plates 45 to reduce the impact force. At the same time, it is filtered through the filter tank 46 on the inclined plate 45 and then sent to the return box 3 through the delivery pipe 48. The slurry sent back by the delivery pipe 48 falls on the top of the cone 83. The second motor 31 drives the first drive shaft 33 to rotate, thereby driving the spray plate 81 and the cone 83 to rotate. The slurry is sprayed inside the return box 3 through the connecting hole 84 and the nozzle 82. The direct outflow of the slurry is prevented by the enclosure 85, which slows down the impact of the slurry reflux. It is quickly diffused by the rotary spraying method to avoid bubbles generated by the impact. If a small amount of Bubbles can be separated, and spray-type diffusion can also break the bubbles. According to the principle of liquid level difference, the reflux box 3 enters from the top and exits from the bottom. The slurry sent in by the connecting pipe 78 is sent into the cross plate 75 through the slide frame 74 and then sent out through the through hole 711. The first motor 11 drives the second drive shaft 71, the slide frame 74 and the cross plate 75 to rotate, and the blade 76 scrapes the bubbles generated on the liquid surface. Through the connection between the slider 713 and the circular slide rail 712, the rotation of the cross plate 75 will not cause movement interference due to the electric push rod 73. The electric push rod 73 drives the cross plate 75 to move upward, and the slider 713 slides along the slide groove 79 to adjust the position of the cross plate 75 and the blade 76. A liquid level sensor is set in the feed box 1, and the position of the blade 76 is driven and adjusted by the liquid level sensor to keep it always flush with the liquid surface.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0039] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A device for eliminating bubbles in lithium battery slurry, comprising a feed box (1), a coating scraper box (5) and a feed pump (6), characterized in that: A feeding pipe (12) is installed on one side of the top of the feed box (1), and a feed pump (6) is installed on one side of the bottom of the feed box (1). A feed pipe (62) is installed between the input end of the feed pump (6) and the bottom of the feed box (1), and a discharge pipe (61) is installed at the output end of the feed pump (6). The other end of the discharge pipe (61) is connected to the coating scraper box (5). A reflux box (3) is provided on the other side of the top of the feed box (1), and a buffer box (4) is provided on one side of the top of the reflux box (3). The buffer The outlet end of the bottom of the box (4) is provided with a delivery pipe (48), and the delivery pipe (48) penetrates into the interior of the return box (3). The top of the other side of the buffer box (4) is provided with a return pipe (41), and the return pipe (41) is connected to the coating scraper box (5). A rotating assembly (7) is provided inside the feed box (1), and the rotating assembly (7) includes a second drive shaft (71). The second drive shaft (71) is rotatably installed inside the feed box (1) through a bearing, and the second drive shaft (71) slides on the surface. The reflux box (3) is connected to a slide frame (74), and transverse plates (75) are fixed on both sides of the slide frame (74), and blades (76) are symmetrically fixed on both sides of the bottom of the transverse plate (75). A spray assembly (8) is provided inside the reflux box (3), and the spray assembly (8) includes a spray plate (81), and the spray plate (81) is arranged at the bottom of the outlet end of the conveying pipe (48). The rotating assembly (7) also includes a slide groove (79), and the slide groove (79) is symmetrically opened on the surface of the second drive shaft (71), and the slide frame (74) is moved along the slide. The groove (79) slides, and a rotating ring (710) is rotatably mounted on the top of the sliding frame (74) through a bearing, and a connecting pipe (78) is provided on the surface of the rotating ring (710). A bellows (77) is fixed between the feeding pipe (12) and the connecting pipe (78). The connecting pipe (78) is communicated with the interior of the sliding frame (74) and the transverse plate (75), and a through hole (711) is equidistantly provided at the bottom of the transverse plate (75) between the two blades (76). The blades (76) scrape the bubbles generated on the liquid surface.

2. The device for eliminating bubbles in lithium battery slurry according to claim 1, characterized in that: The coating scraper box (5) is provided with reflux ports (51) on both sides of the bottom, and the reflux ports (51) are connected to the reflux pipe (41) through a three-way valve. A feed port (52) is provided in the middle of the bottom of the coating scraper box (5), and the feed port (52) is connected to the discharge pipe (61).

3. The device for eliminating bubbles in lithium battery slurry according to claim 1, characterized in that: A first motor (11) is fixed on the outer wall of the top of the feed box (1), and the output end of the first motor (11) is fixedly connected to the second drive shaft (71). A disc (72) is rotatably sleeved on the top of the second drive shaft (71) through a bearing, and electric push rods (73) are fixed on both sides of the bottom of the disc (72). The extended end of the electric push rod (73) is transmission-connected to the horizontal plate (75).

4. The device for eliminating bubbles in lithium battery slurry according to claim 3, characterized in that: A circular slide rail (712) is fixed to the extended end of the electric push rod (73), a slider (713) is fixed to the top of the horizontal plate (75) at a position corresponding to the circular slide rail (712), and the slider (713) slides inside the circular slide rail (712).

5. The device for eliminating bubbles in lithium battery slurry according to claim 1, characterized in that: A second motor (31) is fixed on the top outer wall of the return box (3), and the output end of the second motor (31) penetrates into the return box (3) and is fixed with a first drive shaft (33), and the spray plate (81) is fixed to the first drive shaft (33).

6. The device for eliminating bubbles in lithium battery slurry according to claim 5, characterized in that: The spray assembly (8) further comprises a conical surface (83), the top of the spray plate (81) is fixed with the conical surface (83), the bottom of the spray plate (81) is equidistantly provided with nozzles (82), the conical surface (83) is provided with connecting holes (84) at positions corresponding to the nozzles (82), and a barrier (85) is fixed to the periphery of the conical surface (83).

7. The device for eliminating bubbles in lithium battery slurry according to claim 1, characterized in that: The outer side of the buffer box (4) is rotatably mounted with a box door (42) via a hinge, and mounting grooves (43) are provided on the inner walls of both sides of the buffer box (4), wherein mounting plates (44) are slidably inserted into the mounting grooves (43), and multiple groups of inclined plates (45) are cross-fixed between two groups of the mounting plates (44), and filter grooves (46) are provided on the surfaces of the inclined plates (45), and grille frames (47) are fixed to the bottoms of the two groups of the mounting plates (44).

8. The device for eliminating bubbles in lithium battery slurry according to claim 1, characterized in that: The bottoms of the feed box (1) and the return box (3) are both fixed with mounting brackets (2), and the bottom of the return box (3) is flush with the position of the feeding pipe (12). A connecting pipe (32) is installed at the bottom of the return box (3), and the other end of the connecting pipe (32) is connected to the side of the feed box (1).

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