Slurry backflow device
By adding a reflux port and installing components such as a reflux pump, extrusion tank, and mixing tank inside the die head, the problem of uneven material supply in the coating device was solved, achieving uniform coating and efficient utilization of the slurry.
Patent Information
- Application Number
- CN202520403355.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Existing coating equipment has difficulty accurately controlling the amount of slurry supplied to the die head during the material feeding process, resulting in too much or too little coating on the die head, uneven coating, and affecting the quality of coating operations.
A return port is added inside the die head and connected to the inlet and coating port of the die head. The slurry flow rate is controlled by a regulating valve. A return pump, a slurry extrusion tank and a mixing tank are set up to form a slurry return path. The slurry is filtered and stirred to ensure uniform coating.
It improved the quality of coating operations, avoided slurry waste, increased slurry utilization, and ensured the quality of slurry recirculation.
Smart Images
Figure CN223875416U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to battery production technical field, more specifically, relate to a kind of slurry backflow device. BACKGROUND
[0002] The electric core of lithium battery includes pole piece, pole piece is coated with slurry, pole piece is divided into positive pole piece and negative pole piece, positive pole piece is coated with positive pole slurry, and negative pole piece is coated with negative pole slurry.In the actual production process of battery, the slurry used in coating operation is usually made by batching device and stored in slurry tank after completion.The coating device includes die head, feed pump and material conveying mechanism, and the slurry tank is connected with the feed pump and die head.In coating operation, the feed pump transports the slurry in feed tank to die head through conveying pipeline, and the die head coats the slurry on the pole piece conveyed by material conveying mechanism.The existing coating device often has the problem of difficult accurate control of slurry supply amount during feeding to die head, which leads to excessive or insufficient coating of die head, uneven coating and affects the quality of coating operation. SUMMARY
[0003] The utility model aims at providing a kind of slurry backflow device to solve the technical problem that the coating device in prior art is difficult to accurately control slurry supply amount during feeding to die head, which leads to excessive or insufficient coating of die head, uneven coating and affects the quality of coating operation.
[0004] To achieve the above-mentioned purpose, the utility model employs the technical scheme of providing a kind of slurry backflow device, including die head, regulating valve, slurry recovery tank, slurry recovery tank, backflow pump, slurry extrusion tank, slurry stirring tank, slurry tank and control part, the die head is equipped with the inlet, coating port and backflow port that are interconnected, and the slurry is coated on the pole piece through the coating port;The regulating valve is connected with the backflow port;The slurry recovery tank is connected with the regulating valve, and is used for collecting the slurry flowing out of the backflow port;The backflow pump is connected with the slurry recovery tank;The slurry extrusion tank is equipped with openable inlet and outlet, the inlet of slurry extrusion tank is connected with backflow pump, and the slurry extrusion tank is used for extruding and filtering the slurry;The slurry stirring tank is equipped with inlet and outlet, the inlet of slurry stirring tank is connected with the outlet of slurry extrusion tank, and the slurry stirring tank is used for stirring the slurry;The slurry tank is connected with the outlet of slurry stirring tank;The control part is electrically connected with regulating valve, backflow pump, slurry extrusion tank and slurry stirring tank.
[0005] In combination with the above technical solution, in a possible implementation manner, the slurry extrusion tank comprises an extrusion tank body, an extrusion plate, and a hydraulic cylinder. The extrusion tank body is a hollow structure. The feeding port and the discharging port are arranged on the extrusion tank body. The filter plate is arranged above the discharging port. The extrusion plate is arranged in the extrusion tank body and is in sliding sealing connection with the extrusion tank body. The extrusion plate can move along the axis direction of the extrusion tank body. The hydraulic cylinder is arranged in the extrusion tank body and is connected with the extrusion plate. The hydraulic cylinder is used to push the extrusion plate to extrude the slurry and make the slurry flow out through the filter plate.
[0006] In combination with the above technical solution, in a possible implementation manner, the extrusion tank body is a cylindrical shape. The extrusion plate is a circular plate. The first motor is further arranged on the extrusion tank body. The driving end of the first motor extends into the extrusion tank body and is connected with the hydraulic cylinder. The contact end of the extrusion plate with the slurry is provided with a plurality of grinding heads. The first motor is used to drive the extrusion plate to rotate and grind the slurry particles on the filter plate through the grinding heads.
[0007] In combination with the above technical solution, in a possible implementation manner, the extrusion plate is provided with an annular scraper. The annular scraper is in close contact with the inner wall of the extrusion tank body. The annular scraper is used to scrape off the slurry adhered to the inner wall of the extrusion tank body.
[0008] In combination with the above technical solution, in a possible implementation manner, the slurry stirring tank comprises a stirring tank body, an inner stirring structure, an outer stirring structure, and a rotary driving structure. The feeding port and the discharging port are arranged on the stirring tank body. The discharging port is located at the lower part of the stirring tank body. The slurry tank is located below the discharging port. The inner stirring structure is arranged in the stirring tank body and is in rotary connection with the stirring tank body. The outer stirring structure is arranged in the stirring tank body and is in rotary connection with the stirring tank body. The inner stirring structure is sleeved in the outer stirring structure. The rotary directions of the inner stirring structure and the outer stirring structure are opposite. The inner stirring structure and the outer stirring structure are used to stir the slurry in the stirring tank body. The rotary driving structure is connected with the stirring tank body. The rotary driving structure is in transmission connection with the inner stirring structure and the outer stirring structure. The rotary driving structure is used to drive the inner stirring structure and the outer stirring structure to rotate in opposite directions.
[0009] In combination with the above technical solution, in a possible implementation manner, the inner stirring structure comprises a rotating shaft, a connecting seat, a fixing rod, a fixing frame, a fixing gear, a moving gear and a first stirring rod. The rotating shaft is rotationally connected with the stirring tank body. The rotating shaft is a hollow structure. The upper end of the rotating shaft extends out of the stirring tank body. The rotating driving structure can drive the rotating shaft to rotate. The connecting seat is connected with the rotating shaft. The connecting seat is located below the rotating shaft. The connecting seat is provided with a through hole. The through hole is coaxial with the inner hole of the rotating shaft. The fixing rod is arranged in the rotating shaft. The upper end of the fixing rod extends out of the upper end of the rotating shaft. The lower end of the fixing rod extends out of the through hole of the connecting seat. The fixing frame is arranged outside the stirring tank body and is connected with the upper end of the fixing rod. The fixing gear is connected with the lower end of the fixing rod. The moving gears are rotationally connected with the connecting seat. The moving gears are meshed with the fixing gear. The moving gears are arranged around the fixing gear and can rotate around the fixing gear. Each moving gear is coaxially connected with a first stirring rod. The first stirring rod is provided with a first stirring blade.
[0010] In combination with the above technical solution, in a possible implementation manner, the outer stirring structure comprises a plurality of arc-shaped scrapers and a second stirring rod. The arc-shaped scrapers are connected with the stirring tank body. The arc-shaped scrapers can rotate around the axis of the stirring tank body. The arc-shaped scrapers are in close contact with the inner wall of the stirring tank body and are used to scrape the slurry adhered to the inner wall of the stirring tank body. The rotating driving structure can drive the arc-shaped scrapers to rotate. The second stirring rod is arranged on the arc-shaped inner wall of the arc-shaped scraper. Each arc-shaped scraper is provided with one second stirring rod. The second stirring rod is provided with a second stirring blade.
[0011] In combination with the above technical solution, in a possible implementation manner, the rotating driving structure comprises an inner gear, a driven gear, a driving gear and a second motor. The inner gear is an annular structure. The inner gear is rotationally connected with the stirring tank body. The arc-shaped scrapers are connected with the inner gear. The driven gear is connected with the lower end of the rotating shaft. The driven gear is provided with a through hole. The through hole is coaxial with the through hole. The connecting seat is connected with the driven gear. The lower end of the fixing rod extends out of the rotating shaft through the through hole and the through hole in sequence. The driving gear is rotationally connected with the stirring tank body. The driving gear is meshed with the inner gear and the driven gear. The second motor is connected with the driving gear and is used to drive the driving gear to rotate.
[0012] In combination with the above technical solution, in a possible implementation manner, the first stirring blade is a spiral blade structure.
[0013] In combination with the above technical solution, in a possible implementation manner, the second stirring rod comprises a horizontal rod and a vertical rod connected in sequence. The horizontal rods at both ends are connected with the arc-shaped scraper. At least one second stirring blade is arranged on each vertical rod. The second stirring blade is a disc structure.
[0014] The pulp backflow device has the advantages that compared with the prior art, the utility model adds backflow port in the die head, the backflow port is communicated with the inflow port and the coating port of the die head, the backflow port is connected with the pulp recovery tank through the regulating valve, when the feed pump sends the pulp in the pulp tank into the inflow port of the die head, and when the feed is too much, part of the pulp can backflow into the pulp recovery tank through the backflow port.BRIEF DESCRIPTION OF DRAWINGSDETAILED DESCRIPTION OF THE INVENTION BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained by those skilled in the art without any creative labor under the premise of the drawings.
[0016] Figure 1 The pulp backflow process diagram provided by the embodiments of the present utility model;
[0017] Figure 2 The front view of the pulp extrusion tank used in the embodiments of the present utility model;
[0018] Figure 3 The A-A sectional view along Figure 2
[0019] Figure 4 The internal structure schematic diagram of the pulp extrusion tank used in the embodiments of the present utility model;
[0020] Figure 5 The plan view of the pulp stirring tank used in the embodiments of the present utility model;
[0021] Figure 6 The B-B sectional view along Figure 5
[0022] Figure 7 A slurry stirring tank internal structure schematic view used for the embodiment of the utility model;
[0023] Figure 8 Another angle's slurry stirring tank internal structure schematic view used for the embodiment of the utility model;
[0024] Figure 9 The third angle's slurry stirring tank internal structure schematic view used for the embodiment of the utility model.
[0025] In the drawing, various reference signs are as follows:
[0026] 1, slurry recovery tank;2, reflux pump;3, slurry extrusion tank;4, slurry stirring tank;5, die;6, regulating valve;7, slurry tank;8, feed pump;301, extrusion tank body;302, first motor;303, hydraulic cylinder;304, milling head;305, extrusion plate;306, filter plate;307, annular scraper;401, stirring tank body;402, fixed frame;403, second motor;404, fixed rod;405, rotating shaft;406, internal gear;407, fixed gear;408, moving gear;409, arc-shaped scraper;410, first stirring blade;411, second stirring rod;412, second stirring blade;413, driving gear;414, driven gear;415, connecting seat;416, first stirring rod;501, inlet;502, reflux port;503, coating port. DETAILED DESCRIPTION
[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and embodiments. It should be understood that the described embodiments are only some of the embodiments of the application, not all the embodiments, and the specific embodiments described herein are only used to explain the utility model, and not used to limit the utility model. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the application.
[0028] It needs to be further explained that the drawings and embodiments of the utility model mainly describe and explain the concept of the utility model, and on the basis of the concept, the specific forms and settings of some connection relationship, position relationship, power mechanism, power supply system, hydraulic system and control system, etc. may not be completely described, but those skilled in the art can realize the above-mentioned specific forms and settings by using the well-known mode on the premise of understanding the concept of the utility model.
[0029] When an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or indirectly on or connected to the other element by intervening elements.
[0030] The terms "first", "second", etc. are used only for the purpose of description and do not indicate or imply a relative importance or an implied quantity of the technical features indicated. Thus, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, and the meaning of "several" is one or more, unless otherwise explicitly and specifically limited.
[0031] For the convenience of description, spatial relative terms such as "above", "upper", "top", "bottom", "lower", "right", "left", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways, and the spatial relative descriptions used herein are interpreted accordingly.
[0032] The terms "first", "second", etc. are used only for the purpose of description and do not indicate or imply a relative importance or an implied quantity of the technical features indicated. Thus, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, and the meaning of "several" is one or more, unless otherwise explicitly and specifically limited.
[0033] The pulp backflow device provided by the present application will be described.
[0034] As Figure 1The utility model discloses a first embodiment provides a kind of slurry backflow device including die head 5, regulating valve 6, slurry recovery tank 1, slurry recovery tank 1, backflow pump 2, slurry extrusion tank 3, slurry stirring tank 4, slurry tank 7 and control part, die head 5 is equipped with the flow inlet 501, coating mouth 503 and backflow port 502 of intercommunication, slurry is coated to pole piece by coating mouth 503;Regulating valve 6 is connected with backflow port 502;Slurry recovery tank 1 is connected with regulating valve 6, for collecting the slurry that the backflow port 502 flows out;Backflow pump 2 is connected with slurry recovery tank 1;Slurry extrusion tank 3 is equipped with the inlet and outlet that can be opened and closed, the inlet of slurry extrusion tank 3 is connected with backflow pump 2, and slurry extrusion tank 3 is used to extrude filter slurry;Slurry stirring tank 4 is equipped with inlet and outlet, and the inlet of slurry stirring tank 4 is connected with the outlet of slurry extrusion tank 3, and slurry stirring tank 4 is used to stir slurry;Slurry tank 7 is connected with the discharge port of slurry stirring tank 4;Control part is electrically connected with regulating valve 6, backflow pump 2, slurry extrusion tank 3, slurry stirring tank 4.
[0035] The slurry backflow device provided by the embodiment, compared with the prior art, the utility model adds backflow port 502 in die head 5, and the backflow port 502 is interconnected with the flow inlet 501 and coating mouth 503 of die head 5 itself, and the backflow port 502 is connected with slurry recovery tank 1 through regulating valve 6, when the slurry in slurry tank 7 is sent into the flow inlet 501 of die head 5 by feed pump 8, and when the feed is too much, part of the slurry can flow back into slurry recovery tank 1 through backflow port 502. By controlling the opening size of regulating valve 6, the flow rate of the slurry flowing out of backflow port 502 can be controlled, so that the slurry can be coated more uniformly on the pole piece by coating mouth 503. Meanwhile, the utility model adds backflow pump 2, slurry extrusion tank 3, slurry stirring tank 4, and the backflow port 502, regulating valve 6, slurry recovery tank 1, slurry extrusion tank 3, slurry stirring tank 4 and slurry tank 7 are connected in sequence to form a slurry backflow path. Because there may be phenomena such as gelation of some particles in the slurry during the backflow into the slurry recovery tank 1, if directly backflowing to the slurry tank 7, it will affect the quality of the slurry in the slurry tank 7. In the process of slurry backflow, the utility model first extrudes and filters the slurry through slurry extrusion tank 3 to filter out larger particles in the slurry, then stirs the slurry through slurry stirring tank 4 to ensure uniform mixing of the slurry, and finally flows back to slurry tank 7. The slurry backflow device of the utility model improves the coating operation quality while ensuring the quality of slurry backflow, avoids waste of slurry, and improves the utilization rate of slurry.
[0036] In the embodiment, the slurry recovery tank 1 can be provided with a liquid level sensor, and the liquid level sensor is electrically connected with the control unit. The feed pump 8 feeds the slurry from the slurry tank 7 to the inlet port 501 of the die head 5, and the slurry flows from the inlet port 501 to the coating port 503 for coating, and the excess slurry overflows from the return port 502 into the slurry recovery tank 1. When the slurry in the slurry recovery tank 1 accumulates to a certain liquid level, the liquid level sensor transmits a signal to the control unit, and the control unit controls the return pump 2, the slurry extrusion tank 3 and the slurry stirring tank 4 to start operation, and the slurry in the slurry recovery tank 1 is sequentially filtered by the slurry extrusion tank 3, stirred by the slurry stirring tank 4 and returned to the slurry tank 7.
[0037] In the embodiment, the slurry in the slurry collection tank can also be returned to the slurry tank 7 at intervals.
[0038] As shown in Figures 2 to 4 A specific implementation provided based on the first embodiment of the utility model is as follows: the slurry extrusion tank 3 comprises an extrusion tank body 301, an extrusion plate 305 and a hydraulic cylinder 303. The extrusion tank body 301 is a hollow structure, and an inlet and an outlet are arranged on the extrusion tank body 301. A filter plate 306 is arranged above the outlet. The extrusion plate 305 is arranged in the extrusion tank body 301 and is in sliding sealing connection with the extrusion tank body 301. The extrusion plate 305 can move along the axis direction of the extrusion tank body 301. The hydraulic cylinder 303 is arranged in the extrusion tank body 301 and is connected with the extrusion plate 305. The hydraulic cylinder 303 is used to push the extrusion plate 305 to extrude the slurry and make the slurry flow out through the filter plate 306.
[0039] In the embodiment, when the return is needed, the inlet of the extrusion tank body 301 is opened, the outlet is closed, and the return pump 2 operates to transport the slurry in the slurry recovery tank 1 into the extrusion tank body 301. Then, the return pump 2 stops operating, the inlet of the extrusion tank body 301 is closed, the outlet is opened, and the hydraulic cylinder 303 pushes the extrusion plate 305 to extrude the slurry downward. Under the action of the extrusion force, the slurry passes through the filter plate 306 and flows into the slurry stirring tank 4 for stirring.
[0040] In the embodiment, the extrusion tank body 301 of the slurry extrusion tank 3 is provided with an inlet and an outlet. The inlet is provided with a first on-off valve, and the outlet is provided with a second on-off valve. The first on-off valve and the second on-off valve are electrically connected with the control unit, and the control unit controls the opening and closing of the inlet and the outlet through the first on-off valve and the second on-off valve respectively.
[0041] As shown in Figures 2 to 4As shown, based on the above embodiments, this utility model provides a specific embodiment as follows: the extrusion tank body 301 is cylindrical, the extrusion plate 305 is circular, and the extrusion tank body 301 is also provided with a first motor 302. The driving end of the first motor 302 extends into the extrusion tank body 301 and is connected to the hydraulic cylinder 303. The end of the extrusion plate 305 that contacts the slurry is provided with several grinding heads 304. The first motor 302 is used to drive the extrusion plate 305 to rotate and grind the slurry particles on the filter plate 306 through the grinding heads 304.
[0042] In this embodiment, the reflux pump 2 only starts operating and drives the slurry to flow back after the slurry accumulates to a certain level in the slurry recovery tank 1 or is stored for a certain period of time. During the accumulation process, larger particles or air bubbles may appear in the slurry. The air bubbles in the slurry can be expelled by squeezing, and the particles in the slurry can be retained in the slurry squeezing tank 3 by filtration. In this embodiment, a first motor 302 is provided, which is connected to a hydraulic cylinder 303. This motor drives the hydraulic cylinder 303 and the squeezing plate 305 to rotate. Several grinding heads 304 are provided on the squeezing plate 305. During rotation, the grinding heads 304 can grind and crush larger particles on the filter plate 306 for reuse.
[0043] like Figures 2 to 4 As shown, based on the above embodiments, the present invention provides a specific embodiment as follows: an annular scraper 307 is provided on the extrusion plate 305, the annular scraper 307 is in contact with the inner wall of the extrusion tank body 301, and the annular scraper 307 is used to scrape off the slurry adhering to the inner wall of the extrusion tank body 301.
[0044] In this embodiment, a ring-shaped scraper is provided around the edge of the circular extrusion plate 305. As the extrusion plate 305 moves downward, the scraper can scrape off the slurry adhering to the inner wall of the extrusion tank body 301, thus avoiding slurry waste.
[0045] like Figures 5 to 9As shown, the specific embodiment provided on the basis of the above embodiment is as follows: the slurry stirring tank 4 comprises a stirring tank body 401, an inner stirring structure, an outer stirring structure, a rotary driving structure, a feeding port and a discharging port, the discharging port is located at the lower part of the stirring tank body 401, and the slurry tank 7 is located below the discharging port; the inner stirring structure is arranged in the stirring tank body 401 and is rotationally connected with the stirring tank body 401; the outer stirring structure is arranged in the stirring tank body 401 and is rotationally connected with the stirring tank body 401, the inner stirring structure is sleeved in the outer stirring structure, the rotation directions of the inner stirring structure and the outer stirring structure are opposite, and the inner stirring structure and the outer stirring structure are used for stirring the slurry in the stirring tank body 401; the rotary driving structure is connected with the stirring tank body 401, the rotary driving structure is in transmission connection with the inner stirring structure and the outer stirring structure, and is used for driving the inner stirring structure and the outer stirring structure to rotate reversely.
[0046] In the embodiment, the inner stirring structure and the outer stirring structure are arranged, the inner stirring structure is sleeved in the outer stirring structure, the outer stirring structure and the inner stirring structure are rotationally connected with the stirring tank body 401, the rotation directions of the inner stirring structure and the outer stirring structure are opposite, reverse stirring is formed, and the slurry in the stirring tank body 401 is more uniformly mixed.
[0047] In the embodiment, the discharging port is located at the lower part of the stirring tank body 401, and the slurry tank 7 is located below the discharging port. When the slurry flows into the stirring tank body 401 under extrusion, the slurry can flow into the slurry tank while being stirred under the action of gravity.
[0048] As Figures 5 to 9The utility model discloses a kind of inner stirring structures based on the above implementation mode, and a specific implementation mode is as follows: inner stirring structure includes shaft 405, connecting seat 415, fixed rod 404, fixed frame 402, fixed gear 407, moving gear 408, first stirring rod 416, shaft 405 is rotatably connected with stirring pot body 401, shaft 405 is hollow structure, the upper end of shaft 405 extends stirring pot body 401, rotating drive structure can drive shaft 405 rotation;Connecting seat 415 is connected with shaft 405, connecting seat 415 is located below shaft 405, through-hole is equipped on connecting seat 415, through-hole is coaxial with the inner hole of shaft 405;Fixed rod 404 is arranged in shaft 405, the upper end of fixed rod 404 extends the upper end of shaft 405, the lower end of fixed rod 404 extends by the through-hole of connecting seat 415;Fixed frame 402 is located stirring pot body 401 outside, and is connected with the upper end of fixed rod 404;Fixed gear 407 is connected with the lower end of fixed rod 404;A plurality of moving gears 408 are rotatably connected with connecting seat 415, moving gear 408 is engaged with fixed gear 407, a plurality of moving gears 408 are arranged around fixed gear 407 and can rotate around fixed gear 407;Each moving gear 408 coaxially connects one first stirring rod 416, and first stirring rod 416 is equipped with first stirring knife 410.
[0049] In the embodiment, the upper end of fixed rod 404 extends stirring pot body 401 and is connected with fixed frame 402, and the lower end of fixed rod 404 is provided with fixed gear 407. Shaft 405 is sleeved on fixed rod 404, shaft 405 is rotatably connected with stirring pot body 401, shaft 405 is connected with connecting seat 415, through-hole is arranged on connecting seat 415, and the lower end of fixed rod 404 penetrates through the through-hole on connecting seat 415. Connecting seat 415 is rotatably connected with moving gear 408, moving gear 408 is engaged with fixed gear 407, and when rotating drive structure drives shaft 405 to rotate, moving gear 408 rotates around fixed gear 407, and simultaneously, moving gear 408 revolves around fixed gear 407 and also generates self-rotation. Moving gear 408 is coaxially connected with first stirring rod 416, and first stirring rod 416 rotates and revolves with moving gear 408, so that stirring is more uniform.
[0050] In the embodiment, three moving gears 408 are arranged, and the three moving gears 408 are uniformly arranged along the annular direction of fixed gear 407.
[0051] As Figures 5 to 9As shown, based on the above embodiments, this utility model provides a specific embodiment as follows: The external stirring structure includes several arc-shaped scrapers 409 and a second stirring rod 411. The several arc-shaped scrapers 409 are connected to the mixing tank body 401. The arc-shaped scrapers 409 can rotate around the axis of the mixing tank body 401. The arc-shaped scrapers 409 are in contact with the inner wall of the mixing tank body 401 and are used to scrape off the slurry adhering to the inner wall of the mixing tank body 401. The rotation drive structure can drive the arc-shaped scrapers 409 to rotate. The second stirring rod 411 is provided on the arc-shaped inner wall of the arc-shaped scraper 409. Each arc-shaped scraper 409 is provided with a second stirring rod 411. The second stirring rod 411 is provided with a second stirring blade 412.
[0052] In this embodiment, several arc-shaped scrapers 409 are provided, which are rotatably connected to the mixing tank body 401 and are in contact with the inner wall of the mixing tank body 401. When the rotary drive structure drives the arc-shaped scrapers 409 to rotate around the axis of the mixing tank body 401, the arc-shaped scrapers 409 can scrape off the slurry adhering to the inner wall of the mixing tank body 401. At the same time, the second stirring rod 411 on the arc-shaped scraper 409 can externally stir the slurry as it rotates with the arc-shaped scraper 409.
[0053] In this embodiment, three arc-shaped scrapers 409 are provided, and the three arc-shaped scrapers 409 are evenly arranged along the circumferential direction.
[0054] like Figures 5 to 9 As shown, based on the above embodiments, this utility model provides a further specific embodiment as follows: The rotary drive structure includes an internal gear 406, a follower gear 414, a drive gear 413, and a second motor 403. The internal gear 406 has a ring structure and is rotatably connected to the mixing tank body 401. Several arc-shaped scrapers 409 are connected to the internal gear 406. The follower gear 414 is connected to the lower end of the rotating shaft 405. The follower gear 414 has a through hole in the middle, which is coaxial with the through hole. The connecting seat 415 is connected to the follower gear 414. The lower end of the fixing rod 404 passes through the through hole and the through hole and extends out of the rotating shaft 405. The drive gear 413 is rotatably connected to the mixing tank body 401 and meshes with the internal gear 406 and the follower gear 414. The second motor 403 is connected to the drive gear 413 and is used to drive the drive gear 413 to rotate.
[0055] In this embodiment, the mixing tank body 401 is rotatably connected to an internal gear 406, which is coaxial with the mixing tank body 401 and can rotate around its own axis. An arc-shaped scraper 409 is connected to the internal gear 406, allowing the arc-shaped scraper 409 to rotate around the axis of the mixing tank body 401. A follower gear 414 is provided at the lower end of the rotating shaft 405, with a through hole in the middle. A connecting seat 415 is connected to the follower gear 414 and located below it. The lower end of the fixing rod 404 passes through the through hole and through hole in sequence from the rotating shaft 405 and is connected to the fixing gear 407. A driving gear 413 is also rotatably provided inside the mixing tank body 401, meshing with both the internal gear 406 and the follower gear 414. The driving gear 413 is connected to the second motor 403. When the second motor 403 drives the drive gear 413 to rotate, the inner gear 406 rotates in the same direction as the drive gear 413, thereby driving the arc-shaped scraper 409 to rotate in the same direction as the drive gear 413. The follower gear 414 rotates in the opposite direction to the drive gear 413, and the follower gear 414 drives the rotating shaft 405 to rotate in the opposite direction, so that the first stirring rod 416 rotates in the opposite direction along with the connecting seat 415, realizing internal and external stirring in opposite directions. At the same time, the first stirring rod 416 rotates on its own axis, making the stirring more thorough and better ensuring the uniform mixing of the slurry.
[0056] like Figures 5 to 9 As shown, based on the above embodiments, this utility model provides another specific embodiment as follows: the first stirring blade 410 is a spiral blade structure.
[0057] In this embodiment, the first agitator 410 has a spiral blade structure, so that the first agitator 410 can spirally agitate the slurry as the first agitator rod 416 rotates.
[0058] like Figures 5 to 9 As shown, based on the above embodiments, the present invention provides a specific embodiment as follows: the second stirring rod 411 includes a horizontal rod and a vertical rod connected in sequence. The horizontal rods at both ends are connected to the arc-shaped scraper 409. Each vertical rod is provided with at least one second stirring blade 412, and the second stirring blade 412 has a disc structure.
[0059] In this embodiment, the distance from each arc-shaped vertical rod to the arc-shaped scraper 409 is different, resulting in stirring force at different radii on the periphery. Simultaneously, multiple arc-shaped scrapers 409 are provided, allowing the second stirring rod 411 on each arc-shaped scraper 409 to be positioned at different heights, achieving stirring at different heights and radii. In addition to the stirring action of the second stirring rod 411, a disc-shaped second stirring blade 412 is provided on the second stirring rod 411. The second stirring blade 412 can achieve radial cutting-type disturbance as the arc-shaped scraper 409 rotates.
[0060] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.
[0061] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.
[0062] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale as the dimensions of the parts shown are for the purpose of illustration and description only and not to limit the scope of the application. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the description of the present application. In all examples shown and discussed herein, any specific value is to be interpreted as merely an example and not a limitation. Thus, other examples of the example embodiments can have different values. It is to be noted that like numbers and letters refer to like elements throughout the several views of the drawings and, as such, no further discussion with regard thereto is deemed necessary.
Claims
1. A slurry recirculation device, characterized by, The application relates to a slurry recycling device for electrode sheet coating. The device comprises a die (5) with an inlet (501), a coating port (503) and a return port (502) connected with each other, through which the slurry coats the electrode sheet; an adjusting valve (6) connected with the return port (502); a slurry recovery tank (1) connected with the adjusting valve (6) and used for collecting the slurry flowing out of the return port (502); a return pump (2) connected with the slurry recovery tank (1); a slurry extrusion tank (3) with an openable and closable inlet and outlet, the inlet of the slurry extrusion tank (3) being connected with the return pump (2), and the slurry extrusion tank (3) being used for extruding and filtering the slurry; a slurry stirring tank (4) with an inlet and an outlet, the inlet of the slurry stirring tank (4) being connected with the outlet of the slurry extrusion tank (3), and the slurry stirring tank (4) being used for stirring the slurry; a slurry tank (7) connected with the outlet of the slurry stirring tank (4); and a control unit electrically connected with the adjusting valve (6), the return pump (2), the slurry extrusion tank (3) and the slurry stirring tank (4). The slurry extrusion tank (3) comprises an extrusion tank body (301) with a hollow structure, the inlet and the outlet being arranged on the extrusion tank body (301), and a filter plate (306) being arranged above the outlet; an extrusion plate (305) arranged in the extrusion tank body (301) and in sliding sealing connection with the extrusion tank body (301), the extrusion plate (305) being capable of moving along the axis direction of the extrusion tank body (301); and a hydraulic cylinder (303) arranged in the extrusion tank body (301) and connected with the extrusion plate (305), used for pushing the extrusion plate (305) to extrude the slurry and make the slurry flow out of the filter plate (306). The extrusion tank body (301) is in a cylindrical shape, the extrusion plate (305) is in a circular plate shape, a first motor (302) is further arranged on the extrusion tank body (301), the driving end of the first motor (302) extends into the extrusion tank body (301) and is connected with the hydraulic cylinder (303), a plurality of grinding heads (304) are arranged on the contact end of the extrusion plate (305), and the first motor (302) is used for driving the extrusion plate (305) to rotate and grind the slurry particles on the filter plate (306) through the grinding heads (304). An annular scraper (307) is arranged on the extrusion plate (305) and is in close contact with the inner wall of the extrusion tank body (301), and the annular scraper (307) is used for scraping the slurry adhered to the inner wall of the extrusion tank body (301). The slurry stirring tank (4) comprises a stirring tank body (401), the inlet and the outlet being arranged on the stirring tank body (401), the outlet being located at the lower part of the stirring tank body (401), and the slurry tank (7) being located below the outlet. 2. The slurry recirculation apparatus of claim 1, wherein: 3. The slurry recirculation apparatus of claim 2, wherein: 4. The slurry recirculation apparatus of claim 3, wherein: 5. The slurry recirculation apparatus of claim 1, wherein: An inner stirring structure is arranged in the stirring tank body (401) and rotationally connected with the stirring tank body (401); An outer stirring structure is arranged in the stirring tank body (401) and rotationally connected with the stirring tank body (401), the inner stirring structure is sleeved in the outer stirring structure, the rotation directions of the inner stirring structure and the outer stirring structure are opposite, and the inner stirring structure and the outer stirring structure are used for stirring slurry in the stirring tank body (401); A rotating driving structure is connected with the stirring tank body (401), the rotating driving structure is in transmission connection with the inner stirring structure and the outer stirring structure, and is used for driving the inner stirring structure and the outer stirring structure to rotate reversely.
6. The slurry recirculation apparatus of claim 5, wherein: The inner stirring structure comprises: A rotating shaft (405) is rotationally connected with the stirring tank body (401), the rotating shaft (405) is a hollow structure, the upper end of the rotating shaft (405) extends out of the stirring tank body (401), and the rotating driving structure can drive the rotating shaft (405) to rotate; A connecting seat (415) is connected with the rotating shaft (405), the connecting seat (415) is located below the rotating shaft (405), the connecting seat (415) is provided with a through hole, and the through hole is coaxial with the inner hole of the rotating shaft (405); A fixing rod (404) is arranged in the rotating shaft (405), the upper end of the fixing rod (404) extends out of the upper end of the rotating shaft (405), and the lower end of the fixing rod (404) extends out of the through hole of the connecting seat (415); A fixing frame (402) is arranged outside the stirring tank body (401) and connected with the upper end of the fixing rod (404); A fixing gear (407) is connected with the lower end of the fixing rod (404); A plurality of moving gears (408) are rotationally connected with the connecting seat (415), the moving gears (408) are in mesh with the fixing gear (407), and the moving gears (408) are arranged around the fixing gear (407) and can rotate around the fixing gear (407); A first stirring rod (416) is coaxially connected with each moving gear (408), and the first stirring rod (416) is provided with a first stirring blade (410).
7. The slurry recirculation apparatus of claim 6, wherein: The outer stirring structure comprises: A plurality of arc-shaped scrapers (409) are connected with the stirring tank body (401), the arc-shaped scrapers (409) can rotate around the axis of the stirring tank body (401), the arc-shaped scrapers (409) are attached to the inner wall of the stirring tank body (401), are used for scraping slurry adhered to the inner wall of the stirring tank body (401), and the rotating driving structure can drive the arc-shaped scrapers (409) to rotate; A second stirring rod (411) is arranged on the arc-shaped inner wall of the arc-shaped scraper (409), and one second stirring rod (411) is arranged on each arc-shaped scraper (409), and the second stirring rod (411) is provided with a second stirring blade (412).
8. The slurry recirculation apparatus of claim 7, wherein: The rotating driving structure comprises: An inner gear (406) in ring structure, the inner gear (406) is rotatably connected with the stirring pot body (401), and a plurality of the arc-shaped scrapers (409) are connected with the inner gear (406); A driven gear (414) is connected with the lower end of the rotating shaft (405), the driven gear (414) is provided with a through hole in the middle, the through hole is coaxial with the through hole, the connecting seat (415) is connected with the driven gear (414), and the lower end of the fixed rod (404) sequentially passes through the through hole and the through hole and extends out of the rotating shaft (405); A driving gear (413) is rotatably connected with the stirring pot body (401), and the driving gear (413) is meshed with the inner gear (406) and the driven gear (414); A second motor (403) is connected with the driving gear (413) and is used for driving the driving gear (413) to rotate.
9. The slurry recirculation apparatus of claim 6, wherein: The first stirring blade (410) is a spiral blade structure.
10. The slurry recirculation apparatus of claim 7, wherein: The second stirring rod (411) comprises a horizontal rod and a vertical rod connected in sequence, the horizontal rods at both ends are connected with the arc-shaped scrapers (409), at least one second stirring blade (412) is arranged on each vertical rod, and the second stirring blade (412) is a disc structure.