A lithium battery slurry cleaning device

Abstract

The utility model provides a lithium battery slurry cleaning device, including a first diaphragm pump, a first slurry cleaning mechanism, and a second diaphragm pump; the first slurry cleaning mechanism is arranged between the first diaphragm pump and the second diaphragm pump, and the first diaphragm pump, the first slurry cleaning mechanism, and the second diaphragm pump are connected and arranged, and the first slurry cleaning mechanism can filter and demagnetize the lithium battery slurry. The utility model uses the first diaphragm pump, the first slurry cleaning mechanism, and the second diaphragm pump to cooperate with each other, and the first slurry cleaning mechanism simultaneously filters and demagnetizes the slurry; the use of double diaphragm pumps in series solves the problem of excessive pressure in the device and the problem of insufficient feed. In the past, single diaphragm pumps often had the problem of leakage of the demagnetization tank. Because the slurry delivery pipeline of the device was too long and there were too many series mechanisms, the pressure of the device was too high. Adding a diaphragm pump at the rear end of the equipment can absorb the slurry in the device, reduce the slurry in the device, and achieve the purpose of reducing pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery slurry processing, in particular to a lithium battery slurry cleaning device. Background Art

[0002] The production process of power battery slurry is completed by metal equipment. During the production process, a lot of metal particles and impurities are generated and mixed in the slurry. This slurry is coated on aluminum foil and copper foil and later rolled into the core, which has a great impact on battery performance.

[0003] In the existing technology, slurry filtration and demagnetization are used sporadically, basically adding the surface wherever there is pollution, with uneven distribution and chaotic on-site layout. For demagnetization, magnetic bars are simply arranged to allow the slurry to pass through the demagnetization process. During the demagnetization process, the slurry is unevenly distributed, the demagnetization effect is poor, and there are great hidden dangers. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to filter and demagnetize slurry simultaneously.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] A lithium battery slurry cleaning device comprises a first diaphragm pump (3), a first slurry cleaning mechanism (4), and a second diaphragm pump (6); the first slurry cleaning mechanism (4) is arranged between the first diaphragm pump (3) and the second diaphragm pump (6); the first diaphragm pump (3), the first slurry cleaning mechanism (4), and the second diaphragm pump (6) are connected to each other; the first slurry cleaning mechanism (4) can filter and demagnetize lithium battery slurry.

[0007] Beneficial effect: Through the mutual cooperation of the first diaphragm pump, the first slurry cleaning mechanism and the second diaphragm pump, the first slurry cleaning mechanism filters and demagnetizes the slurry simultaneously; the use of double diaphragm pumps in series not only solves the problem of excessive pressure in the device, but also solves the problem of insufficient supply. In the past, single diaphragm pumps often have problems with demagnetization tank leakage. Since the slurry delivery pipeline of the device is too long and there are too many series mechanisms, the pressure of the device is too high. Adding a diaphragm pump at the rear end of the equipment can absorb the slurry in the device, reduce the slurry in the temporal part of the device, and achieve the purpose of reducing pressure.

[0008] Furthermore, the first slurry cleaning mechanism (4) comprises a first filter (41), a first pressure gauge (42), a first demagnetization tank (43), a second demagnetization tank (44), a first secondary confluence tee (45), and a plurality of pipelines. The input end of the first filter (41) is connected to the first diaphragm pump (3), and the output end of the first filter (41) is connected to the input end of the first demagnetization tank (43) through a pipeline. The first pressure gauge (42) is fixed on the pipeline. The first demagnetization tank (43) is provided with two output ends. One output end of the first demagnetization tank (43) is connected to the input end of the second demagnetization tank (44) through a pipeline. The other output end of the first demagnetization tank (43) and the output end of the second demagnetization tank (44) are connected to the second diaphragm pump (6) through the first secondary confluence tee (45).

[0009] Beneficial effects: Through the mutual cooperation of the first filter, the first demagnetization tank, the second demagnetization tank and the first auxiliary confluence tee, the demagnetization adopts the use of double demagnetization tanks in series to ensure the efficiency of demagnetization; the first filter uses the latest filter on the market, the structural design has no dead angle, is easy to clean, and has a stable flow rate. It can be matched with filter elements of different particle sizes according to actual use. The base is integrated with the design to avoid leakage, and it is quick-connect installation and easy to use.

[0010] Furthermore, a first discharge valve (431) is fixed on the pipeline between the first demagnetization tank (43) and the first secondary confluence tee (45), and a second discharge valve (440) is fixed on the pipeline between the second demagnetization tank (44) and the first secondary confluence tee (45).

[0011] Beneficial effect: Through the setting of the first discharge valve and the second discharge valve, the first discharge valve is closed and the second discharge valve is opened during normal operation. The double demagnetization tanks are used in series to ensure the efficiency and quality of demagnetization. The program will regularly open the first discharge valve to prevent the slurry from staying and solidifying. Moreover, before each shutdown, the first discharge valve and the second discharge valve can be opened to pump out all the slurry in the tank body, saving costs and tank cleaning workload.

[0012] Furthermore, the second demagnetization tank (44) comprises a tank body (441), an end cover (442), a funnel (443), a flow dividing baffle (444), and a magnetic rod (445). The tank body (441) is through-connected from top to bottom. A feeding pipe (4411) is fixed on the side wall of the tank body (441). The top of the tank body (441) is detachably connected to the end cover (442). The bottom of the tank body (441) is connected and fixed with a funnel (443). A slurry outlet (4431) is provided at the bottom of the funnel (443). A plurality of magnetic rods (445) are fixed on the bottom wall of the end cover (442). ) is placed inside the tank body (441) and extends to the top of the funnel (443); a diverter baffle (444) is fixed inside the tank body (441) below the feed pipe (4411); the diverter baffle (444) is provided with mounting openings (4441) the same number as the magnetic rods (445); the magnetic rods (445) are arranged through the mounting openings (4441); a gap between the magnetic rods (445) and the mounting openings (4441) serves as a slurry flow channel; the structure of the first demagnetization tank (43) is the same as that of the second demagnetization tank (44), except that an additional slurry outlet is provided on the tank body of the first demagnetization tank (43).

[0013] Beneficial effects: Through the mutual cooperation of the tank body, end cover, funnel, diversion baffle and magnetic rod, a funnel structure is designed at the lower end of the tank body to prevent the slurry from staying and solidifying; a number of evenly arranged magnetic rods are arranged inside the tank body and fixed on the end cover, and all the magnetic rods can be taken out and cleaned at once each time the end cover is opened; the diversion baffle is set, when the slurry flows into the tank body, it will not flow directly to the bottom, but will be blocked by the diversion baffle, and the slurry will flow along the gap between the side wall of the magnetic rod and the installation port to the funnel below, ensuring the uniformity of the contact between the slurry and its root magnetic rods.

[0014] Furthermore, a sealing gasket (446) is fixed between the contact surface between the end cover (442) and the tank body (441).

[0015] Furthermore, a baffle (4451) is fixed to one end of the magnetic bar (445) close to the funnel (443).

[0016] Beneficial effect: By setting the baffle, it can play a buffering role when the slurry flows down the magnetic rod, avoiding secondary contamination of the slurry.

[0017] Furthermore, it also includes a second slurry cleaning mechanism (5), which is arranged opposite to the first slurry cleaning mechanism (4), a first feed port (31) is fixed on the first diaphragm pump (3), and a first discharge port (32) on the first diaphragm pump (3) is connected to the input ends of the first slurry cleaning mechanism (4) and the second slurry cleaning mechanism (5) respectively through a diverter tee (7), a first feed valve (71) is fixed on the diverter tee (7) near the first slurry cleaning mechanism (4), and a second feed valve (72) is fixed on the diverter tee (7) near the second slurry cleaning mechanism (5), the output ends of the first slurry cleaning mechanism (4) and the second slurry cleaning mechanism (5) are connected to the second feed port (61) of the second diaphragm pump (6) through a main converging tee (8), and a second discharge port (62) is fixed on the second diaphragm pump (6).

[0018] Beneficial effect: The setting of the second slurry cleaning mechanism ensures that the machine does not need to be shut down when the first slurry cleaning mechanism is maintained, and the slurry cleaning device can work continuously to ensure production capacity and line connection stability.

[0019] Furthermore, the second slurry cleaning mechanism (5) comprises a second filter (51), a second pressure gauge (52), a third demagnetization tank (53), a fourth demagnetization tank (54), a second secondary confluence tee (55), and a plurality of pipelines, and the connection method of each device in the second slurry cleaning mechanism (5) is the same as that of each device in the first slurry cleaning mechanism (4).

[0020] Furthermore, it also includes a mobile trolley (1), wherein the first demagnetization tank (43) and the third demagnetization tank (53) are fixed on the mobile trolley (1) via a first support frame (9), and the second demagnetization tank (44) and the fourth demagnetization tank (54) are fixed on the mobile trolley (1) via a second support frame (10).

[0021] Furthermore, it also includes a control cabinet (2), wherein the control cabinet (2) is electrically connected to the first pressure gauge (42) and the second pressure gauge (52) to control the closing and opening of each valve.

[0022] The advantages of the utility model are:

[0023] The utility model realizes the mutual cooperation of the first diaphragm pump, the first slurry cleaning mechanism and the second diaphragm pump. The first slurry cleaning mechanism filters and demagnetizes the slurry simultaneously. The double diaphragm pumps are used in series, which not only solves the problem of excessive pressure in the device but also solves the problem of insufficient supply. In the past, the single diaphragm pump often has the problem of leakage in the demagnetization tank. Since the slurry conveying pipeline of the device is too long and there are too many series mechanisms, the pressure of the device is too high. Adding a diaphragm pump at the rear end of the equipment can absorb the slurry in the device, reduce the slurry in the temporal part of the device, and achieve the purpose of reducing pressure.

[0024] The utility model uses double demagnetization tanks in series for demagnetization through the mutual cooperation of the first filter, the first demagnetization tank, the second demagnetization tank and the first secondary confluence tee, thereby ensuring the demagnetization efficiency; the first filter uses the latest filter on the market, the structural design has no dead angle, is easy to clean, and has a stable flow rate. It can be matched with filter elements of different particle sizes according to actual use conditions, the base is integrated in design to avoid leakage, and it is quick-connect installation and easy to use.

[0025] The utility model provides a first discharge valve and a second discharge valve. During normal operation, the first discharge valve is closed and the second discharge valve is opened. The double demagnetization tanks are used in series to ensure the efficiency and quality of demagnetization. The program will regularly open the first discharge valve to prevent the slurry from staying and solidifying. Moreover, before each shutdown, the first discharge valve and the second discharge valve can be opened to completely discharge the slurry in the tank body, thereby saving costs and the workload of tank cleaning.

[0026] The utility model cooperates with the tank body, the end cover, the funnel, the diversion baffle and the magnetic rod. The funnel structure is designed at the lower end of the tank body to prevent the slurry from staying and solidifying. A plurality of evenly arranged magnetic rods are arranged inside the tank body and fixed on the end cover. Each time the end cover is opened, all the magnetic rods can be taken out and cleaned at once. The diversion baffle is arranged so that when the slurry flows into the tank body, it will not flow directly to the bottom but will be blocked by the diversion baffle. The slurry will flow along the gap between the side wall of the magnetic rod and the installation port to the funnel below, thereby ensuring the uniformity of the contact between the slurry and the magnetic rods.

[0027] The utility model can play a buffering role when the slurry flows down along the magnetic rod by setting the baffle plate, thereby avoiding secondary pollution of the slurry.

[0028] The utility model ensures that the machine does not need to be shut down when the first slurry cleaning mechanism is maintained by setting the second slurry cleaning mechanism, and the slurry cleaning device can work continuously to ensure production capacity and line connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a three-dimensional diagram of a lithium battery slurry cleaning device according to a first embodiment of the utility model;

[0030] Figure 2 This is a top view of a lithium battery slurry cleaning device according to a first embodiment of the utility model;

[0031] Figure 3 This is a principle flow chart of a lithium battery slurry cleaning device according to Embodiment 1 of the utility model;

[0032] Figure 4 This is a left side view of the second demagnetization tank in the lithium battery slurry cleaning device of the second embodiment of the utility model;

[0033] Figure 5for Figure 4 Middle AA section view;

[0034] Figure 6 for Figure 4 Middle DD section view. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Embodiment 1

[0037] like Figure 1 As shown, this embodiment provides a lithium battery slurry cleaning device, including a mobile vehicle 1, a control cabinet 2, a first diaphragm pump 3, a first slurry cleaning mechanism 4, a second slurry cleaning mechanism 5, and a second diaphragm pump 6.

[0038] like Figure 1 As shown, a control cabinet 2, a first diaphragm pump 3, a first slurry cleaning mechanism 4, a second slurry cleaning mechanism 5, and a second diaphragm pump 6 are fixed on the top wall of the mobile cart 1 from left to right, wherein the first slurry cleaning mechanism 4 and the second slurry cleaning mechanism 5 are arranged opposite to each other; a first feed port 31 is fixed on the first diaphragm pump 3, and a first discharge port 32 on the first diaphragm pump 3 is connected with the input ends of the first slurry cleaning mechanism 4 and the second slurry cleaning mechanism 5 respectively through a diversion tee 7, and the output ends of the first slurry cleaning mechanism 4 and the second slurry cleaning mechanism 5 are connected with the second feed port 61 of the second diaphragm pump 6 respectively through a total confluence tee 8, and a second discharge port 62 is fixed on the second diaphragm pump 6.

[0039] like Figure 1 , Figure 2As shown, the first slurry cleaning mechanism 4 includes a first filter 41, a first pressure gauge 42, a first demagnetization tank 43, a second demagnetization tank 44, a first secondary confluence tee 45, and multiple pipelines. The input end of the first filter 41 is connected to one of the diversion tee 7 through a pipeline, and a first feed valve 71 is fixed on the pipeline. The output end of the first filter 41 is connected to the input end of the first demagnetization tank 43 through a pipeline, and a first pressure gauge 42 is fixed on the pipeline. The first demagnetization tank 43 is provided with two output ends. One output end of the first demagnetization tank 43 is connected to the input end of the second demagnetization tank 44 through a pipeline, and the other output end of the first demagnetization tank 43 and the output end of the second demagnetization tank 44 are connected to one of the main confluence tee 8 through the first secondary confluence tee 45. A first discharge valve 431 is fixed on the pipeline between the first demagnetization tank 43 and the first secondary confluence tee 45, and a second discharge valve 440 is fixed on the pipeline between the second demagnetization tank 44 and the first secondary confluence tee 45.

[0040] like Figure 1 , Figure 2 As shown, the second slurry cleaning mechanism 5 includes a second filter 51, a second pressure gauge 52, a third demagnetization tank 53, a fourth demagnetization tank 54, a second secondary confluence tee 55, and multiple pipelines. The connection method of each device in the second slurry cleaning mechanism 5 is the same as that of each device in the first slurry cleaning mechanism 4. The first slurry cleaning mechanism 4 and the second slurry cleaning mechanism 5 are arranged to ensure that the equipment does not need to be shut down during maintenance, and the slurry cleaning device can work continuously to ensure production capacity and line connection stability. The switching of the first slurry cleaning mechanism 4 and the second slurry cleaning mechanism 5 only requires one-key switching on the control cabinet 2.

[0041] like Figure 1 As shown, the first demagnetization tank 43 and the third demagnetization tank 53 are fixed on the moving trolley 1 through the first support frame 9, and the second demagnetization tank 44 and the fourth demagnetization tank 54 are fixed on the moving trolley 1 through the second support frame 10; stop wheels 11 are fixed at the four corners of the bottom wall of the moving trolley 1.

[0042] like Figure 1 As shown, a control system is provided in the control cabinet 2, which is used in conjunction with various pressure gauges and is connected to the PLC system in real time to ensure the fluidity and safety of the slurry in the device; each filter is an existing device on the market; the demagnetization adopts double demagnetization tanks connected in series to ensure the efficiency of demagnetization; the double diaphragm pumps are used in series to solve the problem of excessive pressure in the device and the problem of insufficient supply. In the past, single diaphragm pumps often had problems with leakage in the demagnetization tank. Since the slurry conveying pipeline of the device is too long and there are too many series mechanisms, the pressure of the device is too high. Adding a diaphragm pump at the rear end of the equipment can absorb the slurry in the device and reduce the slurry in the temporal part of the device, thereby achieving the purpose of reducing pressure.

[0043] When using, Figure 1 , Figure 3 As shown, the slurry is pumped into the head tank of the coating workshop from the paddle-combining section, the first feed port 31 of the first diaphragm pump 3 is connected with the head tank, the first diaphragm pump 3 sucks out the slurry from the head tank and pumps the slurry into the lithium battery slurry cleaning device; the second discharge port 62 of the second diaphragm pump 6 is connected with the paddle-combining tank, the second diaphragm pump 6 sucks out the cleaned slurry and pumps it into the paddle-combining tank for standby use, this process is the last guarantee for the slurry, and then the coating process begins;

[0044] When the operation starts, the second feed valve 72 in the second slurry cleaning mechanism 5 is closed, the first feed valve 71 is opened, the first discharge valve 431 is closed, the second discharge valve 440 is opened, the first diaphragm pump 3 and the second diaphragm pump 6 work simultaneously, the slurry enters from the first feed port 31 of the first diaphragm pump 3, passes through the first diaphragm pump 3, the diverter tee 7, the first feed valve 71, the first filter 41, the first pressure gauge 42, the first demagnetization tank 43, the second demagnetization tank 44, the second discharge valve 440, and finally flows to the first secondary converging tee 45, and then to the second diaphragm pump 6, and flows out from the second discharge port 62 of the second diaphragm pump 6; the program will be run regularly. Open the first discharge valve 431, the slurry in the first demagnetization tank 43 will flow out from the lower end to the first secondary confluence tee 45 and be sucked out by the second diaphragm pump 6 to the downstream combined propeller storage tank; the first demagnetization tank 43 is opened regularly by the air-controlled valve to flow out through the lower end funnel, which can prevent the slurry from staying and solidifying, and before each shutdown, the first discharge valve 431 and the second discharge valve 440 can be opened to completely pump out the slurry in the tank body, saving costs and tank cleaning workload; when the first slurry cleaning mechanism 4 is maintained, the first feed valve 71 is closed and the second feed valve 72 is opened to complete the switching of the first slurry cleaning mechanism 4 and the second slurry cleaning mechanism 5.

[0045] Embodiment 2

[0046] like Figure 1 , Figure 4 , Figure 5 , Figure 6As shown, the difference between this embodiment and the first embodiment is that, on the basis of the first embodiment, the fourth demagnetization tank 54 has the same structure as the second demagnetization tank 44, and the second demagnetization tank 44 is now introduced as an example; the second demagnetization tank 44 includes a tank body 441, an end cover 442, a funnel 443, a diversion baffle 444, and a magnetic rod 445. The tank body 441 is arranged to be through-through from top to bottom, and a feed pipe 4411 is fixed on the side wall of the tank body 441, and the top of the tank body 441 is detachably connected to the end cover 442, and a sealing gasket 446 is fixed between the contact surface of the end cover 442 and the tank body 441, and a locking ring 4421 is fixed on the top wall of the end cover 442. The bottom of the tank body 441 is connected to a drain plug 4421 and fixed to the drain plug 443. A slurry outlet 4431 is provided at the bottom of the funnel 443, and a plurality of magnetic rods 445 are fixed on the bottom wall of the end cover 442. In the example of this embodiment, seven magnetic rods 445 are fixed on the bottom wall of the end cover 442. The magnetic rods 445 are placed inside the tank body 441 and extend to the top of the funnel 443. A baffle 4451 is fixed to one end of the magnetic rod 445 close to the funnel 443. A diverter baffle 444 is fixed inside the tank body 441 below the feed pipe 4411. The diverter baffle 444 is provided with mounting openings 4441 that are the same as the number of the magnetic rods 445. The magnetic rods 445 are arranged through the mounting openings 4441, and a gap between the magnetic rods 445 and the mounting openings 4441 is a slurry flow channel.

[0047] like Figure 1 As shown, the structures of the first demagnetization tank 43 and the third demagnetization tank 53 are the same as those of the second demagnetization tank 44 , except that an additional slurry outlet is provided on the tank body of the first demagnetization tank 43 and the third demagnetization tank 53 .

[0048] like Figure 5 As shown, a funnel 443 structure is designed at the lower end of the tank body 441 to prevent the slurry from staying and solidifying; seven evenly arranged magnetic rods 445 are arranged inside the tank body 441, and the magnetic rods 445 are fixed on the end cover 442. Each time the end cover 442 is opened, all the magnetic rods 445 can be taken out and cleaned at once; due to the arrangement of the diverter baffle 444, when the slurry flows into the tank body 441, it will not flow directly to the bottom, but will be blocked by the diverter baffle 444. The slurry will flow along the gap between the side wall of the magnetic rod 445 and the installation port 4441 to the funnel 443 below 441, ensuring the uniformity of the contact between the slurry and its root magnetic rods 445; the baffle 4451 can play a buffering role when the slurry flows down along the magnetic rod 445, thereby avoiding secondary contamination of the slurry.

[0049] When in use, the slurry will be blocked by the slurry diversion baffle 444 when entering the magnetic tank through the inlet pipe 4411, and the slurry will evenly cover the entire magnetic tank space, and then flow down along the magnetic rod 445 through the slurry flow channel, ensuring that all slurry evenly contacts the magnetic rod 445, which has a great effect on the uniformity of demagnetization. At the same time, a funnel 443 is fixed at the bottom of the tank body 441 to prevent the slurry from remaining inside the tank body 441 and causing solidification.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lithium battery slurry cleaning device, characterized in that: It comprises a first diaphragm pump (3), a first slurry cleaning mechanism (4), and a second diaphragm pump (6); The first slurry cleaning mechanism (4) is arranged between the first diaphragm pump (3) and the second diaphragm pump (6); the first diaphragm pump (3), the first slurry cleaning mechanism (4) and the second diaphragm pump (6) are connected to each other; the first slurry cleaning mechanism (4) can filter and demagnetize lithium battery slurry.

2. A lithium battery slurry cleaning device according to claim 1, characterized in that: The first slurry cleaning mechanism (4) comprises a first filter (41), a first pressure gauge (42), a first demagnetization tank (43), a second demagnetization tank (44), a first secondary confluence tee (45), and a plurality of pipelines. The input end of the first filter (41) is connected to the first diaphragm pump (3), the output end of the first filter (41) is connected to the input end of the first demagnetization tank (43) through a pipeline, the first pressure gauge (42) is fixed on the pipeline, the first demagnetization tank (43) is provided with two output ends, one output end of the first demagnetization tank (43) is connected to the input end of the second demagnetization tank (44) through a pipeline, and the other output end of the first demagnetization tank (43) and the output end of the second demagnetization tank (44) are connected to the second diaphragm pump (6) through the first secondary confluence tee (45).

3. A lithium battery slurry cleaning device according to claim 2, characterized in that: A first discharge valve (431) is fixed on the pipeline between the first demagnetization tank (43) and the first secondary confluence tee (45), and a second discharge valve (440) is fixed on the pipeline between the second demagnetization tank (44) and the first secondary confluence tee (45).

4. A lithium battery slurry cleaning device according to claim 2, characterized in that: The second demagnetization tank (44) comprises a tank body (441), an end cover (442), a funnel (443), a flow dividing baffle (444), and a magnetic rod (445). The tank body (441) is through-connected from top to bottom. A feeding pipe (4411) is fixed on the side wall of the tank body (441). The top of the tank body (441) is detachably connected to the end cover (442). The bottom of the tank body (441) is connected and fixed with a funnel (443). A slurry outlet (4431) is provided at the bottom of the funnel (443). A plurality of magnetic rods (445) are fixed on the bottom wall of the end cover (442). The magnetic rods (445) are placed The demagnetizing tank (43) is arranged inside the tank body (441) and extends to the top of the funnel (443). A diverter baffle (444) is fixed inside the tank body (441) below the feed pipe (4411). The diverter baffle (444) is provided with mounting openings (4441) which are the same in number as the magnetic bars (445). The magnetic bars (445) are arranged through the mounting openings (4441). A gap between the magnetic bars (445) and the mounting openings (4441) serves as a slurry flow channel. The structure of the first demagnetizing tank (43) is the same as that of the second demagnetizing tank (44), except that an additional slurry outlet is provided on the tank body of the first demagnetizing tank (43).

5. A lithium battery slurry cleaning device according to claim 4, characterized in that: A sealing gasket (446) is fixed between the contact surface between the end cover (442) and the tank body (441).

6. A lithium battery slurry cleaning device according to claim 4, characterized in that: A baffle (4451) is fixed to one end of the magnetic bar (445) close to the funnel (443).

7. A lithium battery slurry cleaning device according to any one of claims 2 to 6, characterized in that: The invention also comprises a second slurry cleaning mechanism (5), wherein the second slurry cleaning mechanism (5) is arranged opposite to the first slurry cleaning mechanism (4); a first feed port (31) is fixed on the first diaphragm pump (3); a first discharge port (32) on the first diaphragm pump (3) is connected to the input ends of the first slurry cleaning mechanism (4) and the second slurry cleaning mechanism (5) respectively through a diverting tee (7); a first feed valve (71) is fixed on the diverting tee (7) near the first slurry cleaning mechanism (4); a second feed valve (72) is fixed on the diverting tee (7) near the second slurry cleaning mechanism (5); the output ends of the first slurry cleaning mechanism (4) and the second slurry cleaning mechanism (5) are connected to the second feed port (61) of the second diaphragm pump (6) respectively through a total converging tee (8); and a second discharge port (62) is fixed on the second diaphragm pump (6).

8. A lithium battery slurry cleaning device according to claim 7, characterized in that: The second slurry cleaning mechanism (5) comprises a second filter (51), a second pressure gauge (52), a third demagnetization tank (53), a fourth demagnetization tank (54), a second secondary confluence tee (55), and a plurality of pipelines, and the connection method of each device in the second slurry cleaning mechanism (5) is the same as that of each device in the first slurry cleaning mechanism (4).

9. A lithium battery slurry cleaning device according to claim 8, characterized in that: It also comprises a mobile trolley (1), wherein the first demagnetization tank (43) and the third demagnetization tank (53) are fixed on the mobile trolley (1) via a first support frame (9), and the second demagnetization tank (44) and the fourth demagnetization tank (54) are fixed on the mobile trolley (1) via a second support frame (10).

10. A lithium battery slurry cleaning device according to claim 8, characterized in that: It also includes a control cabinet (2), wherein the control cabinet (2) is electrically connected to the first pressure gauge (42) and the second pressure gauge (52) to control the closing and opening of each valve.

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