Efficient dust removal device for roller press

Abstract

The invention relates to an efficient dust removal device for a roller press, which comprises a main body frame and a roller rotating on the main body frame, the main body frame is provided with a dust removal assembly, the dust removal assembly comprises a dust removal box for bearing resin particles, one side of the dust removal box is provided with a dust removal channel, and a buffer assembly is arranged in the dust removal channel; a cleaning assembly is arranged on one side of the dust removal channel and comprises a cleaning box and a cleaning plate arranged in the cleaning box in a sliding mode, a material pumping assembly is arranged between the cleaning box and the dust removal box, and the dust removal assembly is used for blowing resin particles into the dust removal channel. The buffer assembly is used for buffering the resin particles while the resin particles enter the dust removal channel to clean the surface of the roller, the cleaning assembly is used for driving the cleaning plate to slide in the cleaning box when the roller rotates and carrying out vibration cleaning on the resin particles, and the material pumping assembly is used for circularly pumping the resin particles into the dust removal box. Carbon powder on the surface of the roller is subjected to adhesion and dust removal through the resin particles, so that the resin particles can be recycled.

Description

Technical Field

[0001] The invention relates to the technical field of battery negative electrode roller pressing, and more specifically to a high-efficiency dust removal device for a roller press. Background Art

[0002] In the negative electrode rolling process of square batteries, a layer of negative electrode carbon powder adheres to the surface of the roller after the roller has worked for a period of time. The carbon powder adhering to the surface of the roller is wiped and scraped off through the online automatic roller wiping and automatic scraping functions to make the roller surface clean and flat. Because the upper roller reverses and drives the scraper mechanism blade to fit the roller surface upward to scrape off the carbon powder on the roller surface, there is still residual carbon powder on the surface of the roller, causing the carbon powder to fall onto the film surface, causing foreign matter on the film surface after rolling, resulting in poor appearance of defect detection and marking in the subsequent process.

[0003] The Chinese patent with publication number CN217797575U discloses a roller shaft dust removal device for a roller press. When the roller press body is working, the roller rotates. At this time, the rolling wheel drives the dust removal block to rotate under the action of friction, so as to clean the dust on the surface of the roller. The rolling wheel is always in close contact with the roller through the pressure spring, so that the device has the ability to adapt to avoid the situation where the dust removal effect is reduced due to wear; the Chinese patent with publication number CN214927328U discloses a roller shaft dust removal device for a roller press in the lithium battery industry, including a roller pressing mechanism and a plurality of dust removal mechanisms. The mechanism is used to remove dust generated by the rolling mechanism. The rolling mechanism includes a rolling roller group for rolling the pole piece. The rolling roller group is arranged on the rolling station. The pole piece can pass through the rolling roller group. The rolling output end of the rolling roller group can roll the surface of the pole piece passing through the rolling station to compact the pole piece. At least one dust removal mechanism arranged on the rolling station is configured as a first dust removal group. The dust removal port of the first dust removal group corresponds to the outer peripheral surface of the rolling roller group. Combined with several dust removal mechanisms, the pole pieces on multiple stations can be dusted synchronously, and the pole pieces in the rolling process can be dusted efficiently and reliably to ensure the rolling quality of the pole pieces, thereby ensuring the forming quality of the battery cell.

[0004] However, the inventors found that long-term use of scrapers or cleaning blocks to clean the rollers would cause certain wear on the pressure rollers and rollers. At the same time, the cleaning blocks also needed to be replaced regularly, resulting in incomplete dust removal and low efficiency. When the scraper was used for cleaning, the carbon powder on the rollers would accumulate on the blades, and the cleaning effect could not be achieved. Summary of the invention

[0005] The purpose of the present invention is to provide a high-efficiency dust removal device for a roller press to address the deficiencies of the prior art. The device can remove dust from the surface of the roller by adhering carbon powder on the roller surface through resin particles, and at the same time clean the resin particles so that the resin particles can be recycled, thereby ensuring that the roller surface is thoroughly dusted.

[0006] The technical solutions of the present invention are as follows: A high-efficiency dust removal device for a roller press comprises a main frame and a roller rotating on the main frame, a dust removal assembly is arranged on the main frame, the dust removal assembly comprises a dust removal box for carrying resin particles, a dust removal channel is arranged on one side of the dust removal box, a buffer assembly is arranged in the dust removal channel, a cleaning assembly is arranged on one side of the dust removal channel, the cleaning assembly comprises a cleaning box and a cleaning plate slidably arranged in the cleaning box, a suction assembly is arranged between the cleaning box and the dust removal box, the dust removal assembly is used to blow resin particles into the dust removal channel, the buffer assembly is used to clean the roller surface while the resin particles enter the dust removal channel, the cleaning assembly is used to drive the cleaning plate to slide in the cleaning box when the roller rotates, and vibrate and clean the resin particles, and the suction assembly is used to circulate the resin particles into the dust removal box.

[0007] Preferably, the dust removal assembly also includes an inlet portion fixedly arranged on the dust removal box, a contraction portion fixedly arranged on the inlet portion, a diffusion portion fixedly arranged on the contraction portion, and a negative pressure portion fixedly arranged above the contraction portion, and the diffusion portion is connected to the dust removal channel.

[0008] Preferably, the buffer assembly includes a buffer plate fixedly arranged on the dust removal channel, an inclined plate fixedly arranged on the dust removal channel, a first buffer point fixedly arranged on the upper inclined plate, and a second buffer point fixedly arranged on the lower inclined plate.

[0009] As a preferred embodiment, the cleaning assembly also includes a rotating shaft rotatably arranged in the cleaning box, a cleaning disk fixedly arranged on the rotating shaft, a plurality of protrusions fixedly arranged on the cleaning disk, a protrusion fixedly arranged on the cleaning plate, and a through hole opened on the cleaning plate, the rotating shaft and the roller are connected by a belt, the protrusions cooperate with the protrusions, and the cleaning box is fixedly arranged on the main frame and the cleaning box is connected to the inclined plate.

[0010] Preferably, the extraction assembly includes a plurality of feeding pipes fixedly mounted on the cleaning box, extraction pipes fixedly mounted on the plurality of feeding pipes, an extraction pump fixedly mounted on the extraction pipes, a discharge pipe fixedly mounted on the discharge pump, and a plurality of discharge pipes fixedly connected between the discharge pipe and the negative pressure part.

[0011] Preferably, the resin particles are made of PP material and have a particle size between 1 mm and 3 mm.

[0012] As a preferred embodiment, filter holes are provided on the lower inclined plate.

[0013] As a preference, a collection box is provided under the cleaning box and the inclined plate.

[0014] As a preference, the first buffer points and the second buffer points are arranged alternately.

[0015] The beneficial effects of the present invention are: 1. The present invention is provided with resin particles, which are made of PP material. The PP material will adhere to dust due to static electricity during use, so that the resin particles clean the carbon powder on the roller. Since the resin particles of the PP material are small and have a certain elasticity, they will not cause wear to the roller.

[0016] 2. The present invention is provided with a dust removal component and a buffer component. The dust removal box adopts the structure of a contraction part, a diffusion part and a negative pressure part to quickly blow the resin particles into the dust removal channel, and collide with the surface of the roller to make the resin particles adhere to the carbon powder. At the same time, the flow speed of the resin particles is slowed down by the buffer component. Since antistatic agents are added to the first buffer point and the second buffer point, the surface resistance of the resin particles will be reduced, so that the carbon powder will fall from the surface of the resin particles, and the resin particles will be preliminarily cleaned to achieve the effect of recycling.

[0017] 3. The present invention is also provided with a cleaning component and a suction component. By vibrating the cleaning plate, the resin particles shake on the cleaning plate, causing carbon powder to fall and the resin particles to be cleaned. In the carbon powder cleaning process, the suction pump draws the cleaned resin particles into the negative pressure part and back into the dust removal channel to remove dust from the roller, so that the roller is always kept in a clean state during operation, thereby improving the effect of rolling the negative electrode of the battery.

[0018] In summary, the present invention has the advantages of good dust removal effect and fast dust removal speed, and is suitable for the field of roller presses. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 It is a structural schematic diagram of a high-efficiency dust removal device for a roller press; Figure 2 It is a structural schematic diagram of the material extraction component; Figure 3 It is a schematic diagram of the structure of the cleaning component; Figure 4 It is a schematic diagram of the structure of the dust removal component; Figure 5 is a structural schematic diagram of the inclined plate; Figure 6 This is a schematic diagram of the state of cleaning the resin particles after they are attached with carbon powder; Figure 7 for Figure 6 Enlarged view of point A in the middle; Figure 8 for Figure 6 Enlarged view of point B in the middle; Fig. 9 This is a schematic diagram of the state when the resin particles are cleaned and then sucked back into the dust removal box; Figure numerals: 1 main frame, 2 roller, 3 dust removal assembly, 31 dust removal box, 32 inlet, 33 contraction part, 34 diffusion part, 35 negative pressure part, 4 dust removal channel, 5 buffer assembly, 51 buffer plate, 52 inclined plate, 53 first buffer point, 54 second buffer point, 6 cleaning assembly, 61 cleaning box, 62 cleaning plate, 63 rotating shaft, 64 cleaning disk, 65 protrusion, 66 bump, 67 through hole, 7 extraction assembly, 71 feeding pipe, 72 extraction pipe, 73 extraction pump, 74 discharge pipe, 75 discharge pipe, 8 filter hole, 9 collecting box. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0021] Embodiment 1

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] like Figures 1 to 9 As shown, a high-efficiency dust removal device for a roller press comprises a main frame 1 and a roller 2 rotating on the main frame 1, a dust removal assembly 3 is arranged on the main frame 1, the dust removal assembly 3 comprises a dust removal box 31 for carrying resin particles, a dust removal channel 4 is arranged on one side of the dust removal box 31, a buffer assembly 5 is arranged in the dust removal channel 4, a cleaning assembly 6 is arranged on one side of the dust removal channel 4, the cleaning assembly 6 comprises a cleaning box 61 and a cleaning plate 62 slidably arranged in the cleaning box 61, a suction assembly 7 is arranged between the cleaning box 61 and the dust removal box 31, the dust removal assembly 3 is used for blowing resin particles into the dust removal channel 4, the buffer assembly 5 is used for the resin particles to enter the dust removal channel 4 to clean the surface of the roller 2 and at the same time to buffer the resin particles, the cleaning assembly 6 is used for driving the cleaning plate 62 to slide in the cleaning box 61 when the roller 2 rotates, and vibrating and cleaning the resin particles, and the suction assembly 7 is used for cyclically sucking the resin particles into the dust removal box 31.

[0024] It is worth mentioning that Figure 6 and Figure 8As shown, the dust removal assembly 3 also includes an inlet portion 32 fixedly arranged on the dust removal box 31, a contraction portion 33 fixedly arranged on the inlet portion 32, a diffusion portion 34 fixedly arranged on the contraction portion 33, and a negative pressure portion 35 fixedly arranged above the contraction portion 33. The diffusion portion 34 is connected to the dust removal channel 4, wherein the inlet portion 32, the contraction portion 33, the diffusion portion 34, and the negative pressure portion 35 adopt the principle of a venturi tube to work. A fan is connected to the inlet portion 32 to blow air into the inlet portion 32. The resin particles are initially located in the dust removal box 31. When in use, the fan is turned on to blow air into the inlet portion 32. When the gas is blown, the resin particles can be brought into contact with the surface of the roller 2. At the same time, the gas will accelerate the flow rate when passing through the contraction part 33 and enter the diffusion part 34. In this process, the negative pressure part 35 will generate negative pressure. When the negative pressure part 35 generates negative pressure, the resin particles can be quickly blown out from the negative pressure part 35, and the flow speed of the resin particles can be accelerated, so that the resin particles can quickly hit the surface of the roller 2 and adhere to the residual carbon powder on the roller 2, thereby achieving the effect of thoroughly removing dust from the roller 2. In addition, when the resin particles are blown out from the diffusion part 34, the distribution range of the resin particles when blown out can be increased to ensure that the resin particles are in full contact with the roller 2.

[0025] In addition, if Figure 6 and Figure 8 As shown, the buffer assembly 5 includes a buffer plate 51 fixedly arranged on the dust removal channel 4, an inclined plate 52 fixedly arranged on the dust removal channel 4, a first buffer point 53 fixedly arranged on the upper inclined plate 52, and a second buffer point 54 fixedly arranged on the lower inclined plate 52, wherein antistatic agent components are added to the materials of the first buffer point 53 and the second buffer point 54, so that the static electricity between the resin particles is reduced when the resin particles pass through. When in use, when the resin particles flow in the dust removal channel 4, they collide with the buffer plate 51, causing the resin particles to bounce multiple times, which can improve the adhesion between the resin particles and the buffer plate 51. The number of contacts between the rollers 2 improves the cleaning efficiency of the surface of the rollers 2. Since the fan always blows air to the dust removal box 31, the resin particles adhere to the carbon powder and flow along the inclined plate 52. The resin particles will slow down their flow speed after hitting the first buffer point 53 and the second buffer point 54. At the same time, when the resin particles collide between the first buffer point 53 and the second buffer point 54, since antistatic agents are added to the first buffer point 53 and the second buffer point 54, the surface resistance of the resin particles will be reduced, so that the carbon powder will fall from the surface of the resin particles, and the resin particles will be cleaned for the first time.

[0026] It should be further explained that if Figures 6 to 9As shown, the cleaning assembly 6 also includes a rotating shaft 63 rotatably arranged in the cleaning box 61, a cleaning disk 64 fixedly arranged on the rotating shaft 63, a plurality of protrusions 65 fixedly arranged on the cleaning disk 64, a convex block 66 fixedly arranged on the cleaning plate 62, and a through hole 67 opened on the cleaning plate 62. The rotating shaft 63 is connected to the roller 2 by a belt, and the protrusion 65 cooperates with the convex block 66. The cleaning box 61 is fixedly arranged on the main frame 1 and the cleaning box 61 is connected to the inclined plate 52. The roller 2 is always in a rotating state during operation, so it can drive the cleaning disk 64 to rotate. During use, when the resin particles flow into the cleaning box 61 from the inclined plate 52, the resin particles fall onto the cleaning plate 62. When the cleaning disk 64 rotates, it drives the cleaning plate 62 to slide back and forth, causing the cleaning plate 62 to vibrate. The resin particles shake on the cleaning plate 62, causing the carbon powder to fall, and the resin particles are cleaned for the second time.

[0027] It should be emphasized that if Fig. 9 As shown, the extraction assembly 7 includes a plurality of feeding pipes 71 fixedly arranged on the cleaning box 61, extraction pipes 72 fixedly arranged on the plurality of feeding pipes 71, an extraction pump 73 fixedly arranged on the extraction pipe 72, a discharge pipe 74 fixedly arranged on the extraction pump 73, and a plurality of discharge pipes 75 fixedly connected between the discharge pipe 74 and the negative pressure part 35, wherein when the resin particles adhere to the carbon powder, the weight becomes heavier, and the suction force of the extraction pump 73 remains unchanged, the flow speed of the resin particles slows down, and the residence time on the cleaning plate 62 is increased, so that the carbon powder on the resin particles falls off under the action of the cleaning plate 62. When in use, when the carbon powder on the resin particles is cleaned, the extraction pump 73 transfers the cleaned resin particles from the feeding pipe 71 through the extraction pipe 72, the discharge pipe 74, and the discharge pipe 75 to the negative pressure part 35, and then from the negative pressure part 35 to the dust removal channel 4 to remove dust from the roller 2, so that the roller 2 is always kept in a clean state during operation, thereby improving the effect of rolling the negative electrode of the battery.

[0028] It is worth mentioning that Figure 8 As shown, the resin particles are made of PP material and the particle size is between 1mm and 3mm. During use, the PP material will adhere to dust due to static electricity, so that the resin particles in this solution clean the carbon powder on the roller 2. Since the resin particles of the PP material are small and have a certain elasticity, they will not cause wear to the roller 2. At the same time, when passing through the first buffer point 53 and the second buffer point 54, since they contain antistatic agents, the resin particles will reduce static electricity when passing through, causing the carbon powder to fall off, thereby achieving a cleaning effect and realizing recycling.

[0029] Further, such as Figure 8 As shown, a filter hole 8 is opened on the lower inclined plate 52 , and when the resin particles pass through the first buffer point 53 and the second buffer point 54 , the carbon powder can fall out of the filter hole 8 .

[0030] In addition, if Figure 6 As shown, a collection box 9 is provided below the cleaning box 61 and the inclined plate 52 to facilitate the collection of carbon powder.

[0031] Embodiment 2

[0032] like Figure 8 As shown, the components that are the same or corresponding to those in the first embodiment are marked with the corresponding figure marks in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The difference between the second embodiment and the first embodiment is that the first buffer point 53 and the second buffer point 54 are arranged alternately.

[0033] Here, in this embodiment, the first buffer points 53 and the second buffer points 54 are arranged alternately, so as to better reduce the flow speed of the resin particles, prolong the residence time, and make the carbon powder fall off better.

[0034] The working process is as follows: After the fan is turned on and air is blown into the inlet 32, the resin particles can be blown to contact the surface of the roller 2 and collide with the buffer plate 51, so that the resin particles bounce multiple times, thereby improving the cleaning efficiency of the surface of the roller 2. After the resin particles adhere to the carbon powder, they flow along the inclined plate 52. After hitting the first buffer point 53 and the second buffer point 54, the flow speed of the resin particles will be slowed down. At the same time, when the resin particles collide between the first buffer point 53 and the second buffer point 54, since antistatic agents are added to the first buffer point 53 and the second buffer point 54, the surface resistance of the resin particles will be reduced, so that the carbon powder falls from the surface of the resin particles and falls into the collection box 9 through the filter hole 8. When the resin particles flow from the inclined plate 52 into the cleaning box 61 When the resin particles fall onto the cleaning plate 62, the cleaning disk 64 drives the cleaning plate 62 to slide back and forth when rotating, causing the cleaning plate 62 to vibrate, and the resin particles shake on the cleaning plate 62, causing the carbon powder to fall off and the resin particles to be cleaned. During the falling process of the carbon powder, the suction pump 73 passes the cleaned resin particles from the feeding pipe 71 through the suction pipe 72, the discharge pipe 74, and the lower pipe 75 to the negative pressure part 35, and the resin particles can be quickly blown out from the negative pressure part 35, thereby accelerating the flow speed of the resin particles, and making the resin particles quickly hit the surface of the roller 2, and the residual carbon powder on the roller 2 adheres to it, thereby achieving the effect of thoroughly removing dust from the roller 2, so that the roller 2 always remains in a clean state during operation, and the effect of rolling the negative electrode of the battery is improved.

[0035] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0036] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0037] The above description in conjunction with the accompanying drawings is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the structure of the present invention, which should also be regarded as the scope of protection of the present invention and will not affect the effect and practicality of the implementation of the present invention.

Claims

1. A high-efficiency dust removal device for a roller press, comprising a main frame (1) and a roller (2) rotating on the main frame (1), characterized in that: The main frame (1) is provided with a dust removal component (3), the dust removal component (3) comprising a dust removal box (31) for carrying resin particles, a dust removal channel (4) is provided on one side of the dust removal box (31), a buffer component (5) is provided in the dust removal channel (4), a cleaning component (6) is provided on one side of the dust removal channel (4), the cleaning component (6) comprises a cleaning box (61) and a cleaning plate (62) slidably provided in the cleaning box (61), the cleaning box (61) and the dust removal box (31) are rotatably connected to each other. ), the dust removal component (3) is used to blow the resin particles into the dust removal channel (4), the buffer component (5) is used to buffer the resin particles while the resin particles enter the dust removal channel (4) to clean the surface of the roller (2), the cleaning component (6) is used to drive the cleaning plate (62) to slide in the cleaning box (61) when the roller (2) rotates, and vibrate and clean the resin particles, and the suction component (7) is used to circulate the resin particles into the dust removal box (31).

2. The high-efficiency dust removal device for a roller press according to claim 1, characterized in that: The dust removal assembly (3) further comprises an inlet portion (32) fixedly arranged on the dust removal box (31), a contraction portion (33) fixedly arranged on the inlet portion (32), a diffusion portion (34) fixedly arranged on the contraction portion (33), and a negative pressure portion (35) fixedly arranged above the contraction portion (33); the diffusion portion (34) is connected to the dust removal channel (4).

3. The high-efficiency dust removal device for a roller press according to claim 1, characterized in that: The buffer assembly (5) comprises a buffer plate (51) fixedly arranged on the dust removal passage (4), an inclined plate (52) fixedly arranged on the dust removal passage (4), a first buffer point (53) fixedly arranged on the upper inclined plate (52), and a second buffer point (54) fixedly arranged on the lower inclined plate (52).

4. The high-efficiency dust removal device for a roller press according to claim 3, characterized in that: The cleaning assembly (6) further comprises a rotating shaft (63) rotatably arranged in a cleaning box (61), a cleaning disk (64) fixedly arranged on the rotating shaft (63), a plurality of protrusions (65) fixedly arranged on the cleaning disk (64), a protrusion (66) fixedly arranged on the cleaning plate (62), and a through hole (67) provided on the cleaning plate (62); the rotating shaft (63) and the roller (2) are connected via a belt; the protrusion (65) and the protrusion (66) cooperate with each other; the cleaning box (61) is fixedly arranged on the main frame (1) and the cleaning box (61) is connected to the inclined plate (52).

5. The high-efficiency dust removal device for a roller press according to claim 1, characterized in that: The extraction assembly (7) comprises a plurality of feeding pipes (71) fixedly mounted on the cleaning box (61), extraction pipes (72) fixedly mounted on the plurality of feeding pipes (71), an extraction pump (73) fixedly mounted on the extraction pipes (72), an outlet pipe (74) fixedly mounted on the outlet pump (73), and a plurality of outlet pipes (75) fixedly connected between the outlet pipe (74) and the negative pressure portion (35).

6. The high-efficiency dust removal device for a roller press according to claim 1, characterized in that: The resin particles are made of PP material and have a particle size between 1 mm and 3 mm.

7. The high-efficiency dust removal device for a roller press according to claim 3, characterized in that: The lower inclined plate (52) is provided with a filter hole (8).

8. The high-efficiency dust removal device for a roller press according to claim 3, characterized in that: A collection box (9) is provided below the cleaning box (61) and the inclined plate (52).

9. The high-efficiency dust removal device for a roller press according to claim 3, characterized in that: The first buffer points (53) and the second buffer points (54) are arranged alternately.

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