Coating feeding equipment convenient for eliminating slurry bubbles

Abstract

The invention relates to coating feeding equipment convenient for eliminating slurry bubbles, and relates to the technical field of slurry defoaming, the coating feeding equipment comprises a material box, a material opening is formed in one side of the material box, an anilox roller is inserted into the material opening, a partition plate is fixedly arranged in the material box, and a scraper is fixedly arranged on the side, facing the material opening, of the partition plate; a plurality of convex layers are arranged on the side, away from the partition plate, of the scraper, the convex layers are used for being attached to the anilox roller, an upper cavity is formed above the partition plate, a lower cavity is formed below the partition plate, a feeding defoaming assembly is arranged on the material box, and the feeding defoaming assembly is used for defoaming slurry and then inputting the slurry into the material box. The application has the effects of reducing bubbles in the lithium battery slurry and improving the pole piece coating quality.

Description

Technical Field

[0001] The invention relates to the technical field of slurry defoaming, in particular to a coating and feeding device which is convenient for eliminating slurry bubbles. Background Art

[0002] In the electrode coating operation, an anilox roller is generally used for coating. The principle is that the anilox roller is immersed in a material box filled with slurry and rotates. The slurry adheres to the surface of the anilox roller and rotates with the anilox roller. Then a scraper is used to remove excess slurry on the anilox roller, and then the slurry of a predetermined thickness on the surface of the anilox roller is coated on the electrode.

[0003] However, in the process of coating the pole piece with the anilox roller, after the slurry is coated from the anilox roller to the pole piece, gaps appear in the surface grooves of the anilox roller, and the gaps are filled with gas. When the anilox roller rotates to the material box, the air entrained in the surface grooves of the anilox roller will enter the material box, and the air mixes with the slurry in the material box to form bubbles. If the pole piece is coated with the slurry containing bubbles, dense bright spots and black spots will appear on the surface of the pole piece, resulting in low quality of pole piece coating. Summary of the invention

[0004] In order to reduce bubbles in lithium battery slurry and improve the coating quality of pole pieces, the present application provides a coating and feeding device that is convenient for eliminating slurry bubbles.

[0005] The present application provides a coating feeding device that is convenient for eliminating slurry bubbles and adopts the following technical solution: A coating feeding device that is convenient for eliminating slurry bubbles comprises a material box, a material opening is provided on one side of the material box, a screen roller is inserted into the material opening, a partition plate is fixedly arranged in the material box, a scraper is fixedly arranged on the side of the partition plate facing the material opening, a plurality of convex layers are arranged on the side of the scraper away from the partition plate, the convex layers are used to fit with the screen roller, an upper cavity is above the partition plate, a lower cavity is below the partition plate, a feeding and defoaming component is arranged on the material box, and the feeding and defoaming component is used to defoam the slurry and then input it into the material box.

[0006] By adopting the above technical scheme, the anilox roller is installed in the material port, and the feeding and defoaming component is used to defoam the slurry and then fill it into the upper and lower chambers. First, the anilox roller rotates into the lower chamber, and the slurry in the lower chamber will be coated on the grooves on the surface of the anilox roller. At the same time, the slurry in the lower chamber continues to flow under the action of the feeding and defoaming component, so that the air entrained in the grooves on the surface of the anilox roller is melted into the slurry and enters the feeding and defoaming component. When the outer wall of the anilox roller rotates to contact with the scraper, the scraper further scrapes the slurry in the upper and lower chambers of the outer wall of the anilox roller, so that the anilox roller that discharges the air in the surface grooves enters the upper chamber, and the slurry in the upper chamber adheres to the surface of the anilox roller for coating, thereby reducing the situation of bubbles in the slurry during the coating process, thereby reducing the situation of dense bright spots and black spots on the surface of the pole piece, and improving the coating quality of the pole piece.

[0007] Preferably, an upper discharge pipe and an upper feed pipe are arranged in communication in the upper cavity, and both the upper discharge pipe and the upper feed pipe are interconnected with the feeding and defoaming assembly, an upper feed valve is arranged on the upper feed pipe, and an upper discharge valve is arranged on the upper discharge pipe.

[0008] By adopting the above technical solution, the upper feed valve is opened, and the defoamed slurry in the feeding and defoaming component is input into the upper cavity through the upper feed pipe. The upper discharge valve is opened, and the slurry containing bubbles in the upper cavity enters the feeding and defoaming component through the upper discharge pipe for defoaming.

[0009] Preferably, a lower discharge pipe and a lower feed pipe are arranged in communication in the lower cavity, and both the lower discharge pipe and the lower feed pipe are interconnected with the feeding and defoaming assembly, a lower feed valve is arranged on the lower feed pipe, and a lower discharge valve is arranged on the lower discharge pipe.

[0010] By adopting the above technical scheme, the lower feed valve is opened, and the defoamed slurry in the feeding defoaming component is input into the lower cavity through the lower feed pipe. The lower discharge valve is opened, and the slurry containing bubbles in the lower cavity enters the feeding defoaming component through the lower discharge pipe for defoaming.

[0011] Preferably, the feed defoaming assembly includes a raw material box, on which a feed pipe and a feed pipe are connected, a feed valve is provided on the feed pipe, a feed valve is provided on the feed pipe, and both the upper feed pipe and the lower feed pipe are connected to the feed pipe.

[0012] By adopting the above technical solution, the prepared slurry is input into the raw material box through the feeding pipe for storage, and the slurry in the raw material box is respectively transported to the upper cavity and the lower cavity of the material box through the feeding pipe.

[0013] Preferably, the feeding and defoaming assembly also includes a vacuum box, the end of the feed pipe away from the raw material box is interconnected with the vacuum box, the vacuum box is connected with a vacuum feed pump, a vacuum discharge pump and a vacuum air outlet pump, the vacuum air outlet pump is connected with a vacuum air outlet pipe, the output end of the vacuum discharge pump is connected with a vacuum discharge pipe, the upper feed pipe and the lower feed pipe are both interconnected with the vacuum discharge pipe, the upper discharge pipe and the lower discharge pipe are jointly connected with a vacuum feed pipe, and the input end of the vacuum feed pump is connected with the vacuum feed pipe.

[0014] By adopting the above technical scheme, the discharge valve is opened, the raw material slurry enters the vacuum box, the vacuum feed pump is started, and the slurry containing bubbles in the material box enters the vacuum box through the vacuum feed pipe, and the vacuum outlet pump is started to reduce the pressure in the vacuum box, so that the bubbles in the slurry will expand into large bubbles and then gather together to float up and burst, thereby defoaming the slurry in the vacuum box. After the slurry in the vacuum box completes the vacuum defoaming operation, the vacuum discharge pump is started, and the defoamed slurry in the vacuum box is transported to the material box through the vacuum discharge pipe.

[0015] Preferably, the feeding and defoaming assembly also includes a stirring box, a stirring feed pipe and a stirring discharge pipe are connected to the stirring box, a stirring feed pipe is provided with a stirring feed valve, the stirring feed pipe is connected to the vacuum discharge pipe, a stirring discharge valve is provided on the stirring discharge pipe, and the upper feed pipe and the lower feed pipe are both connected to the stirring discharge pipe.

[0016] By adopting the above technical scheme, after vacuum defoaming is completed in the vacuum box, the stirring feed valve is opened, and the slurry that has undergone the first defoaming in the vacuum box enters the stirring box through the stirring feed pipe, and the slurry in the stirring box is defoamed for a second time by stirring. After the defoaming of the slurry in the stirring box is completed, the stirring discharge valve is opened, and the slurry that has undergone the second defoaming in the stirring box is transported to the material box through the stirring discharge pipe.

[0017] Preferably, a stirring shaft is rotatably arranged in the stirring box, a stirring blade is fixedly arranged on the stirring shaft, a stirring motor is fixedly arranged on one side of the stirring box, an output shaft of the stirring motor passes through the stirring box, and the output shaft of the stirring motor is fixedly connected to the stirring shaft.

[0018] By adopting the above technical solution, the stirring motor is started, the stirring motor drives the stirring shaft to rotate, the rotation of the stirring shaft drives the stirring blades to rotate, and the stirring blades eliminate the bubbles in the slurry, so that the slurry is defoamed twice in the stirring box.

[0019] Preferably, the feed defoaming assembly further comprises a filter box, a filter frame is arranged in the filter box, a filter screen is fixedly arranged on the filter frame, a filter feed pipe is connected to the filter box, the filter feed pipe is connected to the stirring discharge pipe, a filter discharge pump is connected to the filter box, a filter discharge pipe is connected to the output end of the filter discharge pump, and the upper feed pipe and the lower feed pipe (41) are both connected to the filter discharge pipe.

[0020] By adopting the above technical scheme, when the defoaming of the slurry in the mixing box is completed, the stirring discharge valve is opened, and the slurry after the second defoaming in the mixing box enters the filter box through the stirring discharge pipe, and the slurry after the second defoaming passes through the filter screen, and the filter screen squeezes the bubbles inside the slurry to burst the bubbles in the slurry, thereby achieving the effect of three defoaming of the slurry, and the slurry after the three defoaming enters the material box through the filter discharge pipe.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting the material box, material port, partition plate, scraper, convex layer, upper cavity, lower cavity and feeding defoaming components, the situation of bubbles in the slurry during the coating process is reduced, thereby reducing the situation of dense bright spots and black spots on the surface of the pole piece, and improving the coating quality of the pole piece; 2. The slurry is vacuum defoamed by setting a vacuum box, a vacuum feed pump, a vacuum discharge pump, a vacuum air outlet pump, a vacuum air outlet pipe, a vacuum discharge pipe and a vacuum feed pipe; 3. By setting up a filter box, a filter frame, a filter screen, a filter feed pipe, a filter discharge pump and a filter discharge pipe, the filter screen squeezes the bubbles inside the slurry, so that the bubbles in the slurry are squeezed and broken, thereby achieving the effect of defoaming the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of a coating and feeding device for facilitating elimination of slurry bubbles in an embodiment of the present application.

[0023] Figure 2 yes Figure 1 Enlarged view of part A.

[0024] Figure 3 It is a schematic diagram of the structure of the feeding and defoaming component in the embodiment of the present application.

[0025] Figure 4 It is a cross-sectional view of a raw material box in an embodiment of the present application.

[0026] Figure 5 It is a cross-sectional view of a vacuum box in an embodiment of the present application.

[0027] Figure 6 It is a cross-sectional view of a mixing box in an embodiment of the present application.

[0028] Figure 7 It is a cross-sectional view of the filter box in the embodiment of the present application.

[0029] Explanation of reference numerals: 1, material box; 11, material port; 12, anilox roller; 2, partition plate; 21, scraper; 22, convex layer; 3, upper chamber; 31, upper feed pipe; 311, upper feed valve; 32, upper discharge pipe; 321, upper discharge valve; 4, lower chamber; 41, lower feed pipe; 411, lower feed valve; 42, lower discharge pipe; 421, lower discharge valve; 5, feeding and defoaming assembly; 6, raw material box; 61, upper feed pipe; 611, upper feed valve; 62, lower feed pipe; 621, lower feed valve; 7, vacuum box; 71, vacuum feed pump; 711, vacuum pump Empty feed pipe; 72, vacuum discharge pump; 721, vacuum discharge pipe; 73, vacuum outlet pump; 731, vacuum outlet pipe; 8, stirring box; 81, stirring feed pipe; 811, stirring feed valve; 82, stirring discharge pipe; 821, stirring discharge valve; 83, stirring shaft; 831, stirring blade; 832, stirring motor; 9, filter box; 91, filter frame; 911, filter net; 92, filter feed pipe; 93, filter outlet pipe; 931, filter outlet pump. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-7 This application is described in further detail.

[0031] The present application embodiment discloses a coating feeding device that is convenient for eliminating slurry bubbles. Figures 1 to 3 , including a material box 1, a material opening 11 is provided on one side of the material box 1, and the material opening 11 is for inserting an anilox roller 12. A partition plate 2 is installed in the material box 1, and a scraper 21 is installed on the side of the partition plate 2 facing the material opening 11. The blade of the scraper 21 is made of rubber, and a convex layer 22 is integrally formed on the blade of the scraper 21. The convex layer 22 is designed according to the groove on the surface of the anilox roller 12, so that the convex layer 22 fits the groove on the surface of the anilox roller 12. The upper cavity 3 is above the partition plate 2, and the lower cavity 4 is below the partition plate 2. A feeding and defoaming component 5 is provided on the material box 1, and the feeding and defoaming component 5 is used to defoam the slurry and then input it into the material box 1. The anilox roller 12 is installed in the material opening 11, and the feeding and defoaming component 5 is used to defoam the slurry and fill it into the upper cavity 3 and the lower cavity 4. When the outer wall of the anilox roller 12 rotates into the material box 1, the slurry in the lower chamber 4 enters the groove on the surface of the anilox roller 12, squeezing the air in the groove on the surface of the anilox roller 12 into the slurry in the lower chamber 4, and the slurry containing bubbles in the lower chamber is discharged from the material box 1 under the action of the feeding and defoaming component 5. When the anilox roller 12 continues to rotate and contacts the scraper 21, the convex layer 22 on the surface of the scraper 21 is embedded in the groove on the outer wall of the anilox roller 12, scraping off the slurry on the outer wall of the anilox roller 12, so that the slurry with bubbles is retained in the lower chamber 4, and then the air in the groove on the surface of the anilox roller 12 is discharged and enters the upper chamber 3. The slurry in the upper chamber 3 adheres to the surface of the anilox roller 12 for coating, reducing the situation of slurry with bubbles during coating, thereby reducing the situation of dense bright spots and black spots on the surface of the pole piece, and improving the coating quality of the pole piece.

[0032] In order to connect the material box 1 with the feeding and defoaming component 5, refer to Figure 1 and Figure 3 The upper chamber 3 is connected with an upper discharge pipe 32 and an upper feed pipe 31, and both the upper discharge pipe 32 and the upper feed pipe 31 are connected with the feeding and defoaming assembly 5. An upper feed valve 311 is installed on the upper feed pipe 31, and an upper discharge valve 321 is installed on the upper discharge pipe 32. The lower chamber 4 is connected with a lower discharge pipe 42 and a lower feed pipe 41, and both the lower discharge pipe 42 and the lower feed pipe 41 are connected with the feeding and defoaming assembly 5. A lower feed valve 411 is installed on the lower feed pipe 41, and a lower discharge valve 421 is installed on the lower discharge pipe 42. When the upper feed valve 311 is opened, the defoamed slurry in the feeding and defoaming assembly 5 is input into the upper chamber 3 from the upper feed pipe 31; when the upper discharge valve 321 is opened, the slurry containing bubbles in the upper chamber 3 enters the feeding and defoaming assembly 5 from the upper discharge pipe 32 for defoaming. Open the lower feed valve 411, and the defoamed slurry in the feeding defoaming component 5 is input into the lower cavity 4 through the lower feed pipe 41; open the lower discharge valve 421, and the slurry containing bubbles in the lower cavity 4 enters the feeding defoaming component 5 through the lower discharge pipe 42 for defoaming.

[0033] In order to input slurry into the material box 1, refer to Figures 1 to 4 The feeding and defoaming assembly 5 includes a raw material box 6, a feeding pipe 61 and a lowering pipe 62 are connected to the raw material box 6, a feeding valve 611 is installed on the feeding pipe 61, and a lowering valve 621 is installed on the lowering pipe 62. The upper feeding pipe 31 and the lower feeding pipe 41 are both connected to the lowering pipe 62. The prepared slurry is input into the raw material box 6 through the feeding pipe 61 for storage, and the slurry in the raw material box 6 is respectively transported to the upper cavity 3 and the lower cavity 4 of the material box 1 through the lowering pipe 62.

[0034] In order to defoam the slurry once, refer to Figures 1 to 5The feeding and defoaming assembly 5 also includes a vacuum box 7, and the end of the feed pipe 62 away from the raw material box 6 is interconnected with the vacuum box 7, and the vacuum box 7 is equipped with a vacuum feed pump 71, a vacuum discharge pump 72 and a vacuum outlet pump 73. The input end of the vacuum outlet pump 73 is interconnected with the vacuum box 7, and the output end of the vacuum outlet pump 73 is connected to a vacuum outlet pipe 731. The input end of the vacuum outlet pump 72 is interconnected with the vacuum box 7, and the output end of the vacuum outlet pump 72 is connected to a vacuum outlet pipe 721, and the upper feed pipe 31 and the lower feed pipe 41 are both connected to the vacuum outlet pipe 721. The upper outlet pipe 32 and the lower outlet pipe 42 are jointly connected to a vacuum feed pipe 711, the input end of the vacuum feed pump 71 is interconnected with the vacuum feed pipe 711, and the output end of the vacuum feed pump 71 is interconnected with the vacuum box 7. The feed valve 621 is opened, and the raw material slurry enters the vacuum box 7. The vacuum feed pump 71 is started, so that the slurry containing bubbles in the material box 1 enters the vacuum box 7 through the vacuum feed pipe 711, and the vacuum outlet pump 73 is started to reduce the pressure in the vacuum box 7, so that the bubbles in the slurry will expand into large bubbles and then gather together to float and burst, thereby defoaming the slurry in the vacuum box 7. After the slurry in the vacuum box 7 completes the vacuum defoaming operation, the vacuum outlet pump 72 is started, and the defoamed slurry in the vacuum box 7 is transported to the material box 1 through the vacuum outlet pipe 721.

[0035] In order to perform secondary defoaming on the slurry, refer to Figures 1 to 6 The feeding and defoaming assembly 5 also includes a stirring box 8, in which a stirring shaft 83 is rotatably arranged, and a stirring blade 831 is installed on the stirring shaft 83. A stirring motor 832 is installed on one side of the stirring box 8, and the output shaft of the stirring motor 832 passes through the stirring box 8, and the output shaft of the stirring motor 832 is welded to the stirring shaft 83. A stirring feed pipe 81 and a stirring discharge pipe 82 are connected to the stirring box 8. A stirring feed valve 811 is arranged on the stirring feed pipe 81, and the stirring feed pipe 81 is connected to the vacuum discharge pipe 721. A stirring discharge valve 821 is arranged on the stirring discharge pipe 82, and the upper feed pipe 31 and the lower feed pipe 41 are both connected to the stirring discharge pipe 82. After the vacuum defoaming is completed in the vacuum box 7, the stirring feed valve 811 is opened, and the slurry that has been defoamed once in the vacuum box 7 enters the stirring box 8 through the stirring feed pipe 81. The stirring motor 832 is started, and the stirring motor 832 drives the stirring shaft 83 to rotate. The stirring shaft 83 rotates and drives the stirring blade 831 to rotate. The stirring blade 831 eliminates bubbles in the slurry, so that the slurry is defoamed twice in the stirring box 8. After the slurry in the stirring box 8 is defoamed, the stirring discharge valve 821 is opened, and the slurry after the second defoaming in the stirring box 8 is transported to the material box through the stirring discharge pipe 82.

[0036] In order to defoam the slurry three times, refer to Figures 1 to 7The feeding defoaming assembly 5 also includes a filter box 9, a filter frame 91 is installed in the filter box 9, and a 200-mesh filter screen 911 is installed on the filter frame 91. A filter feed pipe 92 and a filter discharge pump 931 are connected to the filter box 9, and the filter feed pipe 92 is connected to the stirring discharge pipe 82. A filter discharge pipe 93 is connected to the output end of the filter discharge pump 931, and the upper feed pipe 31 and the lower feed pipe 41 are both connected to the filter discharge pipe 93. When the slurry in the stirring box 8 is defoamed, the stirring discharge valve 821 is opened, and the slurry after secondary defoaming in the stirring box 8 enters the filter box 9 through the stirring discharge pipe 82. The slurry after secondary defoaming passes through the filter screen 911, and the filter screen 911 squeezes the bubbles inside the slurry, so that the bubbles in the slurry are squeezed and broken, thereby achieving the effect of three defoaming of the slurry. The filter discharge pump 931 is started, so that the slurry in the filter box 9 that has been defoamed three times enters the material box 1 through the filter discharge pipe 93.

[0037] The implementation principle of a coating and feeding device that is convenient for eliminating bubbles in slurry in the embodiment of the present application is as follows: when the outer wall of the anilox roller 12 rotates into the material box 1, the slurry in the lower chamber 4 enters the groove on the surface of the anilox roller 12, and the air in the groove on the surface of the anilox roller 12 is squeezed into the slurry in the lower chamber 4, and the slurry containing bubbles in the lower chamber is discharged from the material box 1 under the action of the vacuum feed pump 71. When the anilox roller 12 continues to rotate and contacts the scraper 21, the convex layer 22 on the surface of the scraper 21 is embedded in the groove on the outer wall of the anilox roller 12, and the slurry on the outer wall of the anilox roller 12 is scraped off, so that the slurry with bubbles is retained in the lower chamber 4, and then the air in the groove on the surface of the anilox roller 12 is discharged and enters the upper chamber 3, and the slurry in the upper chamber 3 adheres to the surface of the anilox roller 12 for coating. The slurry mixed with bubbles in the material box 1 and the slurry in the raw material box 6 first enter the vacuum box 7 for defoaming once, then the slurry in the vacuum box 7 enters the stirring box 8 for defoaming twice, and finally the slurry in the stirring box 8 enters the filter box 9 for defoaming three times, and the defoamed slurry enters the upper chamber 3 and the lower chamber 4. Then, the air in the groove on the surface of the anilox roller 12 is discharged through the defoaming roller 5, the slurry in the lower chamber 4 and the scraper 21, and the slurry in the material box 1 and the raw material box 6 is defoamed through the vacuum box 7, the stirring box 8 and the filter box 9, and the defoamed slurry is input into the material box 1. Reduce the situation of bubbles in the slurry during the coating process, and then reduce the situation of dense bright spots and black spots on the surface of the electrode, and improve the coating quality of the electrode.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coating feeding device for eliminating slurry bubbles, comprising a material box (1), a material opening (11) is provided on one side of the material box (1), and a screen roller (12) is inserted into the material opening (11), characterized in that: A partition plate (2) is fixedly arranged in the material box (1), a scraper (21) is fixedly arranged on the side of the partition plate (2) facing the material port (11), a plurality of convex layers (22) are arranged on the side of the scraper (21) away from the partition plate (2), and the convex layers (22) are used to fit with the anilox roller (12), an upper cavity (3) is located above the partition plate (2), and a lower cavity (4) is located below the partition plate (2), and a feeding and defoaming component (5) is arranged on the material box (1), and the feeding and defoaming component (5) is used to defoam the slurry and then input it into the material box (1).

2. A coating and feeding device for eliminating slurry bubbles according to claim 1, characterized in that: An upper discharge pipe (32) and an upper feed pipe (31) are arranged in communication in the upper chamber (3); the upper discharge pipe (32) and the upper feed pipe (31) are both communicated with the feeding and defoaming assembly (5); an upper feed valve (311) is arranged on the upper feed pipe (31), and an upper discharge valve (321) is arranged on the upper discharge pipe (32).

3. A coating and feeding device for eliminating slurry bubbles according to claim 2, characterized in that: A lower discharge pipe (42) and a lower feed pipe (41) are arranged in communication in the lower chamber (4); the lower discharge pipe (42) and the lower feed pipe (41) are both communicated with the feeding and defoaming assembly (5); a lower feed valve (411) is arranged on the lower feed pipe (41), and a lower discharge valve (421) is arranged on the lower discharge pipe (42).

4. A coating and feeding device for eliminating slurry bubbles according to claim 3, characterized in that: The feeding and defoaming component (5) comprises a raw material box (6), a feeding pipe (61) and a feeding pipe (62) are connected to the raw material box (6), a feeding valve (611) is arranged on the feeding pipe (61), a feeding valve (621) is arranged on the feeding pipe (62), and the upper feeding pipe (31) and the lower feeding pipe (41) are both connected to the feeding pipe (62).

5. A coating and feeding device for eliminating slurry bubbles according to claim 4, characterized in that: The feeding and defoaming component (5) also includes a vacuum box (7), the end of the feed pipe (62) away from the raw material box (6) is interconnected with the vacuum box (7), the vacuum box (7) is connected with a vacuum feed pump (71), a vacuum discharge pump (72) and a vacuum air outlet pump (73), the vacuum air outlet pump (73) is connected with a vacuum air outlet pipe (731), the output end of the vacuum discharge pump (72) is connected with a vacuum discharge pipe (721), the upper feed pipe (31) and the lower feed pipe (41) are both interconnected with the vacuum discharge pipe (721), the upper discharge pipe (32) and the lower discharge pipe (42) are jointly connected with a vacuum feed pipe (711), and the input end of the vacuum feed pump (71) is connected with the vacuum feed pipe (711).

6. A coating and feeding device for eliminating slurry bubbles according to claim 5, characterized in that: The feeding and defoaming assembly (5) also includes a stirring box (8), a stirring feed pipe (81) and a stirring discharge pipe (82) are connected to the stirring box (8), a stirring feed valve (811) is provided on the stirring feed pipe (81), the stirring feed pipe (81) is connected to the vacuum discharge pipe (721), a stirring discharge valve (821) is provided on the stirring discharge pipe (82), and the upper feed pipe (31) and the lower feed pipe (41) are both connected to the stirring discharge pipe (82).

7. A coating and feeding device for eliminating slurry bubbles according to claim 6, characterized in that: A stirring shaft (83) is rotatably arranged in the stirring box (8), a stirring blade (831) is fixedly arranged on the stirring shaft (83), a stirring motor (832) is fixedly arranged on one side of the stirring box (8), an output shaft of the stirring motor (832) passes through the stirring box (8), and the output shaft of the stirring motor (832) is fixedly connected to the stirring shaft (83).

8. The coating and feeding device for eliminating slurry bubbles according to claim 6, characterized in that: The feeding and defoaming component (5) also includes a filter box (9), a filter frame (91) is arranged inside the filter box (9), a filter screen (911) is fixedly arranged on the filter frame (91), a filter feed pipe (92) is arranged in communication with the filter box (9), the filter feed pipe (92) and the stirring discharge pipe (82) are interconnected, a filter discharge pump (931) is arranged in communication with the filter box (9), a filter discharge pipe (93) is arranged in communication with the output end of the filter discharge pump (931), and the upper feed pipe (31) and the lower feed pipe (41) are both interconnected with the filter discharge pipe (93).

Images