A kind of lithium battery coating machine is used to remove impurities device

Abstract

The application discloses a lithium battery coating machine impurity removing device, and relates to the technical field of lithium battery coating machines, which comprises a shell inner wall fixedly connected with a storage box, a feeding pipe side end fixedly connected with a feeding tank through a connecting pipe, a feeding pipe side end fixedly connected with a servo motor, a servo motor side end fixedly connected with a conveying shaft penetrating through the feeding pipe side end, a conveying shaft outer wall fixedly connected with a conveying blade rotator fixedly connected to the feeding tank side end, a rotator fixedly connected with a rotating shaft through an output shaft, the output shaft penetrating through the feeding tank side end, a rotating shaft equidistantly fixed with a plurality of buffer assemblies along an axis, two groups of buffer assemblies being rotatably connected with a grinding shaft, and being fixedly connected with a buffer plate not in contact with the grinding shaft; the buffer plate stirs the slurry in the feeding tank inner cavity, the grinding shaft grinds the particle impurities precipitated at the feeding tank bottom, and the particle impurities form particles and remerge into the slurry.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery coating machines, and in particular to an impurity removal device for lithium battery coating machines. Background Art

[0002] The lithium battery coater is a special equipment used to evenly coat the electrode slurry on the substrate during the lithium battery production process. It ensures the uniformity and consistency of the electrode coating by precisely controlling the slurry flow, coating thickness and coating speed, thereby meeting the high quality requirements of lithium battery manufacturing.

[0003] In the prior art, the slurry is transported through a pipeline, and the slurry flows through a filter at the outlet end of the pipeline into a storage box at the bottom of the feeding roller. The filter filters the impurities in the slurry, and the substrate is transported to the back roller through a traction roller. The feeding roller rotates to apply the slurry in the storage box to the substrate, and the substrate continues to move along the rotating back roller. At this time, the scraper on the coating head scrapes off the excess slurry on the substrate, and the scraped slurry is transported to the storage box through the guide plate.

[0004] However, the slurry lacks stirring during the transportation process, so the particulate impurities formed by the slurry itself will be continuously filtered out by the filter, which causes the impurities to accumulate at the filter, thereby reducing the efficiency of the slurry flowing out of the filter, and further aggravating the phenomenon of particulate impurities forming at the outlet of the pipeline. Summary of the Invention

[0005] The purpose of the present invention is to provide an impurity removal device for a lithium battery coating machine to solve the technical problem in the prior art that the slurry lacks stirring during transportation, resulting in the formation of particulate impurities and the accumulation of particulate impurities on the filter screen of the pipeline.

[0006] The technical problem to be solved by the present invention can be achieved through the following technical solutions:

[0007] A de-impurity device for a lithium battery coating machine, comprising:

[0008] A housing, wherein a storage box is fixedly connected to the inner wall of the housing, a filter screen communicating with the inner cavity of the storage box is fixedly connected to the side end of the housing, a feeding roller and a back roller are rotatably connected to the inner wall of the housing, and the feeding roller is located between the back roller and the storage box in the vertical direction;

[0009] A material conveying pipe, wherein the side end of the material conveying pipe is fixedly connected to a feed box via a connecting pipe, the side end of the material conveying pipe is fixedly connected to a servo motor, the end of the material conveying pipe close to the servo motor is fixedly connected to a feed pipe, the side end of the servo motor is fixedly connected to a conveying shaft passing through the side end of the material conveying pipe, and the outer wall of the conveying shaft is fixedly connected to a conveying blade;

[0010] A rotator is fixedly connected to the side end of the feed box, and the rotator is fixedly connected to a rotating shaft through an output shaft. The output shaft passes through the side end of the feed box, and the rotating shaft is fixed with several buffer components at equal distances along the axis. A grinding shaft is rotatably connected between two groups of buffer components, and a buffer plate that does not contact the grinding shaft is fixedly connected. The grinding shaft is rollingly connected to the inner wall of the feed box and the filter screen respectively.

[0011] As a further solution of the present invention: the buffer assembly includes: a buffer column, a buffer seat and a spring, the side end of the buffer column is fixedly connected to the rotating shaft, the buffer column is slidingly connected to the inner cavity of the buffer seat, the spring is arranged in the inner cavity of the buffer seat, and the two ends are respectively fixedly connected to the buffer column and the buffer seat, the two ends of the grinding shaft are rotationally connected to the buffer seat, the two ends of the buffer plate are respectively fixedly connected to the buffer seat, and the buffer seat is slidingly connected to the inner wall of the feed box.

[0012] As a further solution of the present invention: a clamping groove is respectively provided at both ends of the grinding shaft, a clamping seat rotatably connected to the inner wall of the clamping groove is fixed to the side end of the buffer seat, and an ultrasonic processor is fixedly connected to the top of the feed box.

[0013] As a further solution of the present invention: a groove is opened inside the feed box, a sensor that does not contact the buffer seat is fixedly connected to the inner wall of the groove, an infusion pump is fixedly connected to the side end of the feed box, and the infusion pump is connected to the inner cavity of the feed box through an inlet tube.

[0014] As a further solution of the present invention: the outer wall of the conveying pipe is fixedly connected to a support plate, the conveying blade is fixedly connected to a plurality of conveying plates at equal distances along the axis of the conveying shaft, and the conveying plate is fixedly connected to a plurality of cutting knives at equal distances along the width direction.

[0015] As a further solution of the present invention: the inner wall of the shell is fixedly connected to a partition, and the inner wall of the shell is provided with a plurality of traction rollers along the length direction. The plurality of traction rollers are arranged on the upper and lower sides of the partition, and the two ends are respectively rotatably connected to the inner wall of the shell, and the side section of the partition is fixedly connected to the side plate.

[0016] As a further solution of the present invention: a scraper is provided at the side end of the back roller, and a coating head is fixedly connected to the side end of the scraper. The bottom end of the coating head is fixedly connected to the shell through a mounting plate, and the top end of the coating head is abutted and connected with a blocking plate. The cross-section of the blocking plate is "L"-shaped, and the blocking plate is slidably connected to the inner wall of the slide groove opened in the shell. The top end of the coating head is fixedly connected with a number of positioning columns equidistantly along the length direction, and the bottom of the blocking plate is provided with a number of positioning holes along the length direction, and the positioning columns are abutted and connected with the inner wall of the positioning holes.

[0017] As a further solution of the present invention: baffles fixed to the inner wall of the shell are provided on both sides of the feeding roller, the baffles are located at the top of the storage box, and several groups of driven wheels are provided at the bottom end of the storage box along the length direction, and the top end of the driven wheel is fixedly connected to a rotating shaft that passes through the bottom end of the storage box, the outer wall of the rotating shaft is fixedly connected to a rotating blade, and the outer wall of the rotating shaft is fixed with a sealing plate rotatably connected to the storage box, and the bottom of the storage box is provided with an electric motor fixedly connected to the inner wall of the shell, and the output end of the electric motor is connected to the driven wheel sleeve through a belt.

[0018] As a further solution of the present invention: an aerator is fixedly connected to the top of the shell, and a diverter box and an air inlet pipe are fixedly connected to both ends of the aerator. The side end of the diverter box is connected to the inner cavity of the shell through the diverter pipe. The diverter pipes are provided in several groups and are evenly distributed along the length direction of the diverter box. The inner wall of the air inlet pipe is slidably connected to a dehumidification component.

[0019] As a further solution of the present invention: the dehumidification component includes: a filter plate, a connecting rod and a supporting plate, the connecting rod is provided with several groups, and the two ends are respectively fixedly connected to the filter plate and the supporting plate, the filter plate and the supporting plate are respectively slidably connected to the inner wall of the air inlet pipe, the side end of the filter plate is fixedly connected to the limiting plate, the cross-section of the limiting plate is "L" shaped, and the side end of the limiting plate is abutted against the air inlet pipe.

[0020] Beneficial effects of the present invention:

[0021] 1. The conveying blades rotate in the conveying pipe to push the slurry to move. The slurry moves in the form of rolling. The rolling can stir the slurry, thereby reducing the number of particulate impurities formed in the conveying pipe.

[0022] 2. When particulate impurities begin to accumulate at the filter screen, the rotor rotates with the grinding shaft by setting the output shaft, the rotating shaft and the buffer assembly. The grinding shaft grinds the particulate impurities deposited at the bottom of the feed box as it rolls along the inner wall of the feed box. When the grinding shaft rolls along the surface of the filter screen, the grinding shaft can scrape off the particulate impurities attached to the surface of the filter screen. The scraped particulate impurities fall to the bottom of the feed box. The particulate impurities are ground into particles by the grinding shaft and then integrated into the slurry again.

[0023] 3. When the grinding shaft rolls, the buffer assembly can compress and expand to ensure that the grinding shaft always rolls along the inner wall of the feed box and the surface of the filter screen, thereby ensuring that the grinding shaft can always grind the granular impurities at the bottom of the feed box, thereby ensuring that the grinding shaft can fully grind the granular impurities and avoiding the phenomenon of the grinding shaft getting stuck.

[0024] 4. When the rotating shaft drives the buffer plate to rotate along the axis of the rotating shaft through the buffer assembly, the buffer plate stirs the slurry in the inner cavity of the feed box. On the one hand, particulate impurities accumulate at the filter screen, and the rotating buffer plate can improve the efficiency of the slurry passing through the filter screen. On the other hand, the rotating buffer plate provides stirring effect for the slurry in the inner cavity of the feed box. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a top view of the overall structure of the present invention;

[0028] Figure 3 It is a cross-sectional view of the overall structure of the present invention;

[0029] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at A;

[0030] Figure 5 This is a schematic diagram of the support plate structure of the present invention;

[0031] Figure 6 It is a schematic diagram of the conveying blade structure of the present invention;

[0032] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at B;

[0033] Figure 8 It is a schematic structural diagram of the feed box of the present invention;

[0034] Figure 9 This is a schematic structural diagram of the buffer assembly of the present invention;

[0035] Figure 10 A top view of the buffer assembly structure of the present invention;

[0036] Figure 11 BB is a cross-sectional view of the buffer assembly structure of the present invention;

[0037] Figure 12 It is a cross-sectional view of the buffer assembly structure CC of the present invention;

[0038] Figure 13 This is a schematic diagram of the structure of the dehumidification component of the present invention;

[0039] Figure 14 Schematic diagram of the driven wheel structure of the present invention;

[0040] Figure 15It is a schematic structural diagram of the coating head of the present invention.

[0041] In the figure: 1. Shell; 2. Diverter box; 3. Aerator; 4. Inlet pipe; 5. Limit plate; 6. Traction roller; 7. Partition plate; 8. Feed pipe; 9. Servo motor; 10. Conveyor pipe; 11. Support plate; 12. Connecting pipe; 13. Feed box; 14. Diverter pipe; 15. Storage box; 16. Feed roller; 17. Mounting plate; 18. Coating head; 19. Scraper; 20. Blocking plate; 21. Back roller; 22. Conveyor shaft; 23. Side plate; 25. Baffle; 26. Rotating shaft; 27. Filter plate; 28. Connecting rod; 29. ​​Carrying plate; 30. Liquid inlet pipe; 31. Ultrasonic processor; 32. Rotator; 33. Infusion pump; 34. Delivery blade; 35. Delivery plate; 36. Cutting knife; 37. Rotating shaft; 38. Sensor; 39. Filter; 40. Output shaft; 41. Buffer column; 42. Buffer seat; 43. Grinding shaft; 44. Buffer plate; 45. Spring; 46. Holding seat; 47. Rotating blade; 48. Sealing plate; 49. Driven pulley; 50. Belt; 51. Electric motor; 52. Positioning column. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] like Figures 1-15As shown, a de-impurity device for a lithium battery coating machine includes: a housing 1, a feed pipe 10 and a rotator 32, the inner wall of the housing 1 is fixedly connected to a storage box 15, the side end of the housing 1 is fixedly connected to a filter screen 39 communicating with the inner cavity of the storage box 15, the inner wall of the housing 1 is rotatably connected to a feed roller 16 and a back roller 21, the feed roller 16 is located between the back roller 21 and the storage box 15 in the vertical direction, the side end of the feed pipe 10 is fixedly connected to the feed box 13 through a connecting pipe 12, and the feed pipe The side end of 10 is fixedly connected to the servo motor 9, the feeding pipe 10 is fixedly connected to the feeding pipe 8 at one end near the servo motor 9, the side end of the servo motor 9 is fixedly connected to the conveying shaft 22 that passes through the side end of the feeding pipe 10, the outer wall of the conveying shaft 22 is fixedly connected to the conveying blade 34, the rotator 32 is fixedly connected to the side end of the feed box 13, the rotator 32 is fixedly connected to the rotating shaft 37 through the output shaft 40, the output shaft 40 passes through the side end of the feed box 13, and the rotating shaft 37 is fixedly connected along the axis equidistantly. There are several buffer components, and a grinding shaft 43 is rotatably connected between the two groups of buffer components, and a buffer plate 44 is fixedly connected to the grinding shaft 43, which is not in contact with the grinding shaft 43. The grinding shaft 43 is respectively connected to the inner wall of the feed box 13 and the filter screen 39 in a rolling manner. The slurry is passed into the delivery pipe 10 through the feed pipe 8, and the servo motor 9 is running. The servo motor 9 drives the conveying shaft 22 to rotate, and the conveying shaft 22 drives the conveying blades 34 to rotate. The conveying blades 34 drive the slurry to be transported in the delivery pipe 10 in a rolling form. The slurry enters the inner cavity of the feed box 13 through the connecting pipe 12, and then the slurry is filtered through the filter screen 39. The filtered slurry enters the storage box 15. At this time, the bottom of the feeding roller 16 is located in the slurry, and the back roller 21 and the feeding roller 16 can be driven to rotate by the driving device of the prior art. The back roller 21 rotates and moves the substrate. After the substrate rotates, it moves in the opposite direction. The rotating feeding roller 16 smears the slurry on the bottom of the substrate.

[0044] The conveying blades 34 rotate in the conveying pipe 10 to push the slurry to move. The slurry moves in a tumbling manner. The tumbling can stir the slurry, thereby reducing the amount of particulate impurities formed in the slurry in the conveying pipe 10.

[0045] When particulate impurities begin to accumulate at the filter 39, the rotator 32 runs, and the rotator 32 drives the output shaft 40 to rotate, and the output shaft 40 drives the rotating shaft 37 to rotate. The rotating shaft 37 rotates along the axis of the rotating shaft 37 with the grinding shaft 43 through the buffer assembly. The grinding shaft 43 first rolls along the inner wall of the feed box 13, and the grinding shaft 43 grinds the particulate impurities deposited at the bottom of the feed box 13. When the grinding shaft 43 rolls along the surface of the filter 39, the grinding shaft 43 can scrape off the particulate impurities attached to the surface of the filter 39, and the scraped particulate impurities fall to the bottom of the feed box 13. The particulate impurities are formed into particles by the grinding of the grinding shaft 43 and are integrated into the slurry again. On the one hand, it avoids the accumulation of particulate impurities at the filter 39, affecting the efficiency of the slurry passing through the filter 39. On the other hand, the particulate impurities are integrated into the slurry again, avoiding the reduction of the composition of the slurry and affecting the quality of the slurry coating on the substrate.

[0046] When the grinding shaft 43 rolls, the buffer assembly can ensure that the grinding shaft 43 always rolls along the inner wall of the feed box 13 and the surface of the filter screen 39 by compression and expansion, thereby ensuring that the grinding shaft 43 can always grind the granular impurities at the bottom of the feed box 13, thereby ensuring the sufficiency of the grinding shaft 43 in grinding the granular impurities, avoiding the phenomenon of the grinding shaft 43 getting stuck, and ensuring the working efficiency of the granular impurities being ground by the grinding shaft 43.

[0047] When the rotating shaft 37 rotates with the buffer assembly, the buffer assembly rotates along the axis of the rotating shaft 37 with the buffer plate 44, and the buffer plate 44 stirs the slurry in the inner cavity of the feed box 13. On the one hand, particulate impurities accumulate at the filter screen 39, and the rotating buffer plate 44 can improve the efficiency of the slurry passing through the filter screen 39. On the other hand, the rotating buffer plate 44 provides stirring action for the slurry in the inner cavity of the feed box 13, avoiding the accumulation of particulate impurities at the filter screen 39, which causes the slurry to form particulate impurities at the filter screen 39, thereby ensuring the efficiency of the slurry passing through the filter screen 39.

[0048] In some specific embodiments, the buffer assembly includes: a buffer column 41, a buffer seat 42 and a spring 45. The side end of the buffer column 41 is fixedly connected to the rotating shaft 37, the buffer column 41 is slidably connected to the inner cavity of the buffer seat 42, the spring 45 is arranged in the inner cavity of the buffer seat 42, and the two ends are respectively fixedly connected to the buffer column 41 and the buffer seat 42, the two ends of the grinding shaft 43 are rotatably connected to the buffer seat 42, the two ends of the buffer plate 44 are respectively fixedly connected to the buffer seat 42, the buffer seat 42 is slidably connected to the inner wall of the feed box 13, and the two ends of the grinding shaft 43 are respectively provided with a holding groove, the side end of the buffer seat 42 is fixed with a holding seat 46 rotatably connected to the inner wall of the holding groove, and the top of the feed box 13 is fixedly connected to an ultrasonic The processor 31 and the spring 45 in the buffer assembly are always in a compressed state. When the rotating shaft 37 rotates, the rotating shaft 37 rotates with the buffer column 41. The buffer column 41 is supported by the inner wall of the buffer seat 42, so that the buffer column 41 rotates with the buffer seat 42. The buffer assembly is located at both ends of the rotating shaft 37. When the buffer seat 42 rotates, the buffer seat 42 drives the holding seat 46 to rotate. The holding seat 46 rotates with the grinding shaft 43 by supporting the inner wall of the holding groove, thereby providing power for the grinding shaft 43 to roll along the inner wall of the feed box 13 and the surface of the filter screen 39. The inner wall of the holding groove opened on the grinding shaft 43 can rotate along the holding seat 46.

[0049] When the distance between the grinding shaft 43 and the rotating shaft 37 begins to decrease, the grinding shaft 43 is supported by the holding seat 46 through the inner wall of the holding groove, and the grinding shaft 43 carries the buffer seat 42 to slide along the buffer column 41 toward the rotating shaft 37. At this time, the spring 45 is further compressed; when the distance between the grinding shaft 43 and the rotating shaft 37 begins to increase, the spring 45 is always in a compressed state, and the elastic tension provided by the spring 45 supports the buffer seat 42 to slide along the buffer column 41 away from the rotating shaft 37. The buffer seat 42 moves with the grinding shaft 43 through the holding seat 46, thereby ensuring that the grinding shaft 43 always rolls along the inner wall of the feed box 13 and the surface of the filter screen 39.

[0050] In order to better crush the particulate impurities, the ultrasonic processor 31 is operated, and the ultrasonic waves emitted by the ultrasonic processor 31 are transmitted to the particulate impurities in the inner cavity of the feed box 13. The ultrasonic waves further crush the ground particulate impurities, thereby decomposing the particulate impurities into particles, which makes it easier for the particles to dissolve in the slurry. At the same time, the ultrasonic waves can shake off the particulate impurities attached to the filter 39, thereby preventing the particulate impurities from clogging the filter 39.

[0051] In some specific embodiments, a groove is provided inside the feed box 13, and a sensor 38 that does not contact the buffer seat 42 is fixedly connected to the inner wall of the groove. An infusion pump 33 is fixedly connected to the side end of the feed box 13, and the infusion pump 33 is connected to the inner cavity of the feed box 13 through the liquid inlet pipe 30. When the slurry is not sufficiently stirred in the inner cavity of the feed box 13, the pH value in the slurry will change, which will cause the slurry to form particulate impurities. At this time, the sensor 38 can detect the change in the pH value of the slurry, and the sensor 38 transmits the detection signal to the infusion pump 33. The infusion pump 33 stores alkaline liquid and acidic liquid. The infusion pump 33 transports liquid according to the numerical change of the slurry. The liquid flows into the inner cavity of the feed box 13 through the liquid inlet pipe 30, and the liquid and slurry merge. The buffer assembly rotates with the buffer plate 44, so that the buffer plate 44 stirs the liquid and slurry, making the two mixed more fully, thereby ensuring that the slurry is at a suitable pH value and avoiding the formation of particulate impurities in the slurry.

[0052] In some specific embodiments, the outer wall of the conveying pipe 10 is fixedly connected to a support plate 11, the conveying blades 34 are fixedly connected to a number of conveying plates 35 at equal distances along the axial line of the conveying shaft 22, and the conveying plates 35 are fixedly connected to a number of cutting knives 36 at equal distances along the width direction. When the servo motor 9 drives the conveying shaft 22 to rotate, vibration will be generated, and the vibration will cause the conveying pipe 10 to shake at the side end of the shell 1. In order to ensure the stability of the conveying pipe 10, the conveying pipe 10 is supported by the support plate 11, and the support plate 11 provides support and fixation for the conveying pipe 10 to prevent the conveying pipe 10 from shaking.

[0053] When the slurry is conveyed in the conveying pipe 10, in order to further improve the stirring effect of the slurry during the conveying process, when the conveying shaft 22 rotates with the conveying blades 34, the conveying blades 34 rotate with the conveying plates 35, and the conveying plates 35 stir the slurry, thereby further improving the mixing effect of the slurry. When the conveying blades 34 and the conveying plates 35 rotate at the same time, the slurry can flow between the conveying plates 35 and the conveying shaft 22, thereby ensuring the effect of conveying the slurry in the conveying pipe 10.

[0054] When the conveying plate 35 stirs the slurry, the cutting blade 36 fixed to the conveying plate 35 provides shear force to the slurry. The cutting blade 36 cuts the slurry, thereby cutting the particles in the slurry, thereby preventing the particles in the slurry from gathering together to form particulate impurities.

[0055] In some specific embodiments, a partition 7 is fixedly connected to the inner wall of the shell 1, and a plurality of pulling rollers 6 are provided on the inner wall of the shell 1 along the length direction. The plurality of pulling rollers 6 are arranged on the upper and lower sides of the partition 7, and the two ends are respectively rotatably connected to the inner wall of the shell 1. The side section of the partition 7 is fixedly connected to the side plate 23. The pulling rollers 6 can be driven to rotate by a driving device of the prior art. The substrate is first conveyed through the pulling rollers 6 at the bottom of the partition 7. When the substrate is conveyed to the side plate 23, the side plate 23 is provided with a feed port, and the substrate enters between the back roller 21 and the feeding roller 16. Then, the substrate goes around along the back roller 21 to the top of the back roller 21. At this time, the substrate has been fed to the feeding roller 16. The slurry is coated, and the substrate is moved from the opposite direction. The substrate moves from the discharge port opened in the side panel 23 to the traction roller 6 on the top of the partition 7. The traction roller 6 carries the substrate for transportation. The partition 7 can separate the fed substrate and the discharged substrate after coating. The side panel 23 can block the side end of the traction roller 6 to prevent the feed port and the discharge port of the substrate from being large, which causes dust in the air to enter the shell 1. The dust is suspended on the feeding roller 16 and the back roller 21, which on the one hand affects the quality of the substrate coating. On the other hand, the dust will combine with the slurry carried by the storage box 15, causing the slurry to form particulate impurities, polluting the quality of the slurry.

[0056] In some specific embodiments, a scraper 19 is provided at the side end of the back roller 21, and a coating head 18 is fixedly connected to the side end of the scraper 19. The bottom end of the coating head 18 is fixedly connected to the shell 1 through the mounting plate 17. The top end of the coating head 18 is abutted against a blocking plate 20. The cross section of the blocking plate 20 is "L"-shaped. The blocking plate 20 is slidingly connected to the inner wall of the slide groove opened in the shell 1. A plurality of positioning columns 52 are fixedly connected to the top end of the coating head 18 at equal distances along the length direction. A plurality of positioning holes are opened at the bottom of the blocking plate 20 along the length direction. The positioning columns 52 are abutted against the inner wall of the positioning holes. When the loading roller 16 applies the slurry carried by the storage box 15 to the substrate, the scraper 19 scrapes off the excess slurry on the substrate, thereby ensuring that the thickness of the slurry on the substrate remains consistent.

[0057] When the scraper 19 is installed on the side end of the back roller 21, the scraper 19 is first installed on the coating head 18, the coating head 18 is fixed on the mounting plate 17, and the mounting plate 17 is fixed to the side end of the shell 1 by bolts. At this time, the sealing plate 20 is moved vertically downward, and the sealing plate 20 slides along the slide groove opened in the shell 1, and the positioning column 52 is inserted into the positioning hole opened at the bottom of the sealing plate 20. When the sealing plate 20 and the top end of the coating head 18 are in contact with each other, the sealing plate 20 blocks the opening between the coating head 18 and the shell 1 to prevent dust in the air from entering the inner cavity of the shell 1 from the opening and contaminating the slurry, thereby achieving the effect of sealing the inner cavity of the shell 1, and the inner wall of the positioning hole and the positioning column 52 are in contact with each other to provide positioning for the sealing plate 20, thereby ensuring the stability of the sealing plate 20 and at the same time limiting the top end of the coating head 18.

[0058] In some specific embodiments, baffles 25 fixed to the inner wall of the shell 1 are provided on both sides of the feeding roller 16, the baffles 25 are located at the top of the storage box 15, and several groups of driven wheels 49 are provided at the bottom end of the storage box 15 along the length direction. The top of the driven wheel 49 is fixedly connected to a rotating shaft 26 that passes through the bottom end of the storage box 15, and a rotating blade 47 is fixedly connected to the outer wall of the rotating shaft 26. A sealing plate 48 rotatably connected to the storage box 15 is fixed to the outer wall of the rotating shaft 26. An electric motor 51 fixedly connected to the inner wall of the shell 1 is provided at the bottom of the storage box 15, and the output end of the electric motor 51 is sleeved and connected to the driven wheel 49 through a belt 50. When the inner cavity of the shell 1 contains dust, in order to prevent dust from falling into the slurry carried by the storage box 15, the baffle 25 can seal the top of the storage box 15, and at the same time, reduce the entry of air into the storage box 15. The contact area between the air and the slurry. When the device is in a humid environment, the moisture contained in the air will contact the slurry. The moisture will cause the slurry carried by the storage box 15 to form particulate impurities. The particulate impurities will affect the quality of coating the substrate by the loading roller 16. At the same time, impurities will accumulate on the side end of the filter 39, thereby affecting the efficiency of the slurry passing through the filter 39. The baffle 25 reduces the contact area between the air and the slurry, thereby reducing the contact area between the water molecules in the air and the slurry. When the scraper 19 scrapes off the excess slurry on the substrate, the slurry falls on the baffle 25. The baffle 25 can be set at an angle. The scraped slurry flows along the baffle 25, and then falls into the storage box 15 from the gap between the baffle 25 and the loading roller 16, thereby achieving the effect of recycling the scraped slurry.

[0059] When the slurry is in the storage box 15, due to the lack of stirring, the particles and solvent in the slurry will be stratified due to different densities, and the particles in the slurry will precipitate, thereby forming particulate impurities at the bottom of the storage box 15 and accumulating on the side end of the filter 39. The electric motor 51 is running, and the output end of the electric motor 51 rotates, and the output end drives the belt 50 to move. The belt 50 is connected to the driven wheel 49 through a sleeve, so that the belt 50 drives the driven wheel 49 to rotate, and the driven wheel 49 rotates with the rotating shaft 26, and the rotating shaft 26 drives the rotating blade 47 to rotate. The rotating blade 47 transports the particles at the bottom of the slurry upward, thereby achieving the effect of stirring the slurry, thereby avoiding the stratification of the particles and solvent in the slurry, and further avoiding the formation of particulate impurities in the slurry.

[0060] When the rotating shaft 26 rotates, the rotating shaft 26 rotates along the surface of the storage box 15 with the sealing plate 48. The sealing plate 48 can seal the gap between the rotating shaft 26 and the sealing plate 48 to prevent the slurry from flowing out of the gap.

[0061] In some specific embodiments, an aerator 3 is fixedly connected to the top of the shell 1, and the two ends of the aerator 3 are respectively fixedly connected to the diverter box 2 and the air inlet pipe 4. The side end of the diverter box 2 is connected to the inner cavity of the shell 1 through the diverter pipe 14. The diverter pipe 14 is provided with several groups and is equidistantly distributed along the length direction of the diverter box 2. The inner wall of the air inlet pipe 4 is slidably connected with a dehumidification component, which includes: a filter plate 27, a connecting rod 28 and a supporting plate 29. The connecting rod 28 is provided with several groups, and the two ends are respectively fixedly connected to the filter plate 27 and the supporting plate 29. The filter plate 27 and the supporting plate 29 are respectively slidably connected to the inner wall of the air inlet pipe 4. The side end of the filter plate 27 is fixedly connected to the limiting plate 5. The cross section of the limiting plate 5 is "L" shaped. The side end of the limiting plate 5 is in abutment with the air inlet pipe 4 to prevent moisture and dust in the air from entering the feed opening of the side plate 23. The air enters the inner cavity of the shell 1 through the inlet and outlet, polluting the cleanliness of the slurry and the back roller 21. The aerator 3 is running, the aerator 3 starts to inhale, and the air enters the air inlet pipe 4. The air passes through the dehumidification component to filter dust and absorb moisture, and then is passed into the diversion box 2 by the aerator 3. Then the air is diverted into the shell 1 through several diversion pipes 14, and the air flows into the inner cavity from the top of the shell 1. As the air pressure in the shell 1 increases, the air in the shell 1 is squeezed out, and the squeezed air is discharged from the inlet and outlet opened on the side panel 23. On the one hand, it ensures that the air in the inner cavity of the shell 1 does not contain dust and moisture. On the other hand, it prevents air containing moisture and dust from entering the inner cavity of the shell 1 from the inlet and outlet opened on the side panel 23, thereby avoiding the phenomenon that the slurry contacts with moisture and dust to form particulate impurities.

[0062] When the dehumidification component is running, the air first passes through the filter plate 27 to filter the dust, and the supporting plate 29 carries the adsorbent. The adsorbent adsorbs the moisture in the air, thereby achieving the effect of filtering and dehumidifying the air. When the adsorbent reaches saturation, the staff controls the limit plate 5 to pull the filter plate 27, the filter plate 27 pulls the connecting rod 28, and the connecting rod 28 pulls the supporting plate 29. The supporting plate 29 is taken out of the air intake pipe 4 with the adsorbent, and then the adsorbent is replaced. When the filter plate 27 and the supporting plate 29 are installed in the air intake pipe 4, the limit plate 5 is abutted against the side end of the air intake pipe 4, thereby providing a limiting effect for the filter plate 27, preventing the air from entering the air intake pipe 4 and being filtered through the filter plate 27. The filter plate 27 enters the air intake pipe 4, causing the dehumidification component to be inconvenient to remove.

[0063] The above describes several embodiments of the present invention in detail, but the embodiments of the present invention are not limited to these and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A de-impurity device for a lithium battery coating machine, characterized in that: include: A housing (1), wherein a storage box (15) is fixedly connected to the inner wall of the housing (1), a filter screen (39) communicating with the inner cavity of the storage box (15) is fixedly connected to the side end of the housing (1), and a loading roller (16) and a back roller (21) are rotatably connected to the inner wall of the housing (1), and the loading roller (16) is located between the back roller (21) and the storage box (15) in the vertical direction; A material conveying pipe (10), wherein the side end of the material conveying pipe (10) is fixedly connected to a feed box (13) via a connecting pipe (12), the side end of the material conveying pipe (10) is fixedly connected to a servo motor (9), the material conveying pipe (10) is fixedly connected to a feed pipe (8) at one end close to the servo motor (9), the side end of the servo motor (9) is fixedly connected to a conveying shaft (22) that passes through the side end of the material conveying pipe (10), and the outer wall of the conveying shaft (22) is fixedly connected to a conveying blade (34); A rotator (32), the rotator (32) is fixedly connected to the side end of the feed box (13), the rotator (32) is fixedly connected to a rotating shaft (37) via an output shaft (40), the output shaft (40) passes through the side end of the feed box (13), the rotating shaft (37) is fixed with a plurality of buffer components equidistantly along the axis, a grinding shaft (43) is rotatably connected between two groups of the buffer components, and a buffer plate (44) that does not contact the grinding shaft (43) is fixedly connected, and the grinding shaft (43) is respectively connected in a rolling manner to the inner wall of the feed box (13) and the filter screen (39); The buffer assembly includes: a buffer column (41), a buffer seat (42) and a spring (45), the side end of the buffer column (41) is fixedly connected to the rotating shaft (37), the buffer column (41) is slidably connected to the inner cavity of the buffer seat (42), the spring (45) is arranged in the inner cavity of the buffer seat (42), and the two ends are respectively fixedly connected to the buffer column (41) and the buffer seat (42), the two ends of the grinding shaft (43) are rotatably connected to the buffer seat (42), the two ends of the buffer plate (44) are respectively fixedly connected to the buffer seat (42), and the buffer seat (42) is slidably connected to the inner wall of the feed box (13).

2. The impurity removal device for a lithium battery coating machine according to claim 1, characterized in that: The grinding shaft (43) has a clamping groove at both ends, a clamping seat (46) rotatably connected to the inner wall of the clamping groove is fixed to the side end of the buffer seat (42), and an ultrasonic processor (31) is fixedly connected to the top end of the feed box (13).

3. The impurity removal device for a lithium battery coating machine according to claim 1, characterized in that: A groove is provided inside the feed box (13), and a sensor (38) that does not contact the buffer seat (42) is fixedly connected to the inner wall of the groove. An infusion device (33) is fixedly connected to the side end of the feed box (13), and the infusion device (33) is communicated with the inner cavity of the feed box (13) through a liquid inlet tube (30).

4. The impurity removal device for a lithium battery coating machine according to claim 1, characterized in that: The outer wall of the conveying pipe (10) is fixedly connected to a support plate (11), the conveying blade (34) is fixedly connected to a plurality of conveying plates (35) at equal intervals along the axis of the conveying shaft (22), and the conveying plate (35) is fixedly connected to a plurality of cutting knives (36) at equal intervals along the width direction.

5. The impurity removal device for a lithium battery coating machine according to claim 1, characterized in that: The inner wall of the shell (1) is fixedly connected to a partition (7), and the inner wall of the shell (1) is provided with a plurality of traction rollers (6) along the length direction. The plurality of traction rollers (6) are arranged on the upper and lower sides of the partition (7), and the two ends are respectively rotatably connected to the inner wall of the shell (1), and the side section of the partition (7) is fixedly connected to a side plate (23).

6. The impurity removal device for a lithium battery coating machine according to claim 1, characterized in that: The side end of the back roller (21) is provided with a scraper (19), and the side end of the scraper (19) is fixedly connected to a coating head (18). The bottom end of the coating head (18) is fixedly connected to the shell (1) through a mounting plate (17). The top end of the coating head (18) is abutted and connected with a blocking plate (20). The cross section of the blocking plate (20) is in an "L" shape. The blocking plate (20) is slidably connected to the inner wall of a slide groove opened in the shell (1). The top end of the coating head (18) is fixedly connected to a plurality of positioning columns (52) at equal distances along the length direction. The bottom of the blocking plate (20) is provided with a plurality of positioning holes along the length direction. The positioning columns (52) are abutted and connected to the inner wall of the positioning holes.

7. The impurity removal device for a lithium battery coating machine according to claim 1, characterized in that: Baffles (25) fixed to the inner wall of the shell (1) are provided on both sides of the feeding roller (16), and the baffles (25) are located at the top of the storage box (15). The bottom end of the storage box (15) is provided with a plurality of groups of driven wheels (49) along the length direction, and the top end of the driven wheel (49) is fixedly connected to a rotating shaft (26) passing through the bottom end of the storage box (15), and the outer wall of the rotating shaft (26) is fixedly connected to a rotating blade (47), and the outer wall of the rotating shaft (26) is fixedly provided with a sealing plate (48) rotatably connected to the storage box (15). The bottom of the storage box (15) is provided with an electric motor (51) fixedly connected to the inner wall of the shell (1), and the output end of the electric motor (51) is sleeve-connected to the driven wheel (49) through a belt (50).

8. The impurity removal device for a lithium battery coating machine according to claim 7, characterized in that: The top of the shell (1) is fixedly connected to an aerator (3), and the two ends of the aerator (3) are respectively fixedly connected to a diversion box (2) and an air inlet pipe (4). The side end of the diversion box (2) is connected to the inner cavity of the shell (1) through a diversion pipe (14). The diversion pipes (14) are provided in a plurality of groups and are evenly distributed along the length direction of the diversion box (2). The inner wall of the air inlet pipe (4) is slidably connected to a dehumidification component.

9. The impurity removal device for a lithium battery coating machine according to claim 8, characterized in that: The dehumidification assembly comprises: a filter plate (27), a connecting rod (28) and a bearing plate (29), wherein the connecting rod (28) is provided with a plurality of groups, and both ends are fixedly connected to the filter plate (27) and the bearing plate (29), respectively. The filter plate (27) and the bearing plate (29) are respectively slidably connected to the inner wall of the air inlet pipe (4), and the side end of the filter plate (27) is fixedly connected to the limit plate (5), the cross section of the limit plate (5) is in an "L" shape, and the side end of the limit plate (5) is abutted against the air inlet pipe (4).

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