Recycling and purifying device for electrolyte of scrapped lithium battery

Abstract

The utility model relates to the technical field of lithium batteries, and discloses a scrapped lithium battery electrolyte recycling and purifying device, which solves the problem that a filter screen is inconvenient to clean at present, and comprises a purifying box I, a purifying box II is fixedly mounted at the top of the purifying box I, and a cleaning mechanism is arranged between the purifying box I and the purifying box II; according to the filter screen cleaning device disclosed by the utility model, through the matching among a screw rod I, an L-shaped plate I and a guide rod, when a supporting shaft I rotates, a side plate conveniently moves to open an opening II, so that a cleaning brush II moves to clean the surface of a filter screen II, and impurities on the filter screen II can be discharged from the opening II; and through cooperation of a second screw rod, a second L-shaped plate and a U-shaped round rod, when a second supporting shaft rotates, a bottom plate can conveniently move to open a first opening, a first cleaning brush can move to clean the surface of a first filter screen, impurities on the first filter screen can be discharged from the first opening, and therefore the first filter screen and a second filter screen can be conveniently cleaned.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium batteries, and specifically relates to a device for recycling and purifying the electrolyte of waste lithium batteries in a circulating manner. Background Art

[0002] The electrolyte of a lithium battery is a carrier for ion transmission in the battery, generally composed of a lithium salt and an organic solvent. The electrolyte plays a role in conducting ions between the positive and negative electrodes of the lithium battery. Since the valuable metals such as nickel, cobalt, manganese, and lithium contained in the lithium battery have a high recycling value; according to the patent document with the authorization announcement number: CN204865226U and the name "An Electrolyte Purification Device", it includes an electrolyte storage tank, a drain pipe is provided on one side of the electrolyte storage tank, the lower end of one side of the electrolyte storage tank is connected to an outlet pipe, a circulation pump is provided on the outlet pipe, the outlet of the outlet pipe is connected to a purification tank, the lower end of one side of the purification tank is connected to the electrolyte storage tank through a return pipe, a first filter screen and a second filter screen are provided inside the purification tank, adsorption plates are arranged in an alternating manner between the first filter screen and the second filter screen, and each adsorption plate is connected to a negative ion generator; however, there are still the following defects:

[0003] It filters and purifies the electrolyte of waste lithium batteries by arranging a first filter screen and a second filter screen inside the purification tank. Since the first filter screen and the second filter screen are located inside the purification tank, it is inconvenient to clean the first filter screen and the second filter screen. Content of the Utility Model

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a device for recycling and purifying the electrolyte of waste lithium batteries in a circulating manner, effectively solving the problem that it is currently inconvenient to clean the filter screen.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A device for recycling and purifying the electrolyte of waste lithium batteries in a circulating manner includes a first purification tank, a second purification tank is fixedly installed on the top of the first purification tank, a cleaning mechanism is arranged between the first purification tank and the second purification tank, a circulation pump is fixedly installed on the top of the first purification tank, an outlet pipe is fixedly connected between the circulation pump and the first purification tank, a connecting pipe is fixedly connected to the top of the second purification tank, the top end of the connecting pipe is fixedly connected to a liquid storage pipe, a drain pipe is fixedly connected to the outside of the liquid storage pipe, a return pipe is fixedly connected between the liquid storage pipe and the circulation pump, a first filter screen is fixedly installed inside the first purification tank, an opening one is provided at the bottom of the first purification tank, a second filter screen is fixedly installed inside the second purification tank, and an opening two is provided on the second purification tank;

[0006] The cleaning mechanism includes a side plate located on the outside of the purification box 2, a sealing ring 1 located at the second opening is fixedly connected to the outside of the purification box 2, the side plate is fitted with the sealing ring 1, a cleaning brush 2 is provided on the top of the filter screen 2, a mounting plate 2 is fixedly connected to the top of the cleaning brush 2, two connecting columns 2 are symmetrically fixedly connected between the mounting plate 2 and the side plate, a bottom plate is provided at the bottom of the purification box 1, a sealing ring 2 located at one of the openings is fixedly connected to the bottom of the purification box 1, the bottom plate is fitted with the sealing ring 2, a cleaning brush 1 is provided on the right side of the filter screen 1, a mounting plate 1 is fixedly connected to the cleaning brush 1, and two connecting columns 1 are symmetrically fixedly connected between the mounting plate 1 and the bottom plate.

[0007] Preferably, an L-shaped frame is fixedly installed on the outer side of the purification box 2, and a support shaft 1 is rotatably connected to the inner side wall of the L-shaped frame, and a screw 1 is fixedly connected to the end of the support shaft 1 away from the L-shaped frame, and the end of the screw 1 away from the support shaft 1 is rotatably connected to the purification box 2, and an L-shaped plate 1 is threadedly sleeved on the outer side of the screw 1, and the L-shaped plate 1 is fixed to the side of the side plate away from the purification box 2, and a guide rod is fixedly connected between the L-shaped frame and the purification box 2, and the L-shaped plate 1 is movably sleeved on the outer side of the guide rod.

[0008] Preferably, a U-shaped round rod is fixedly connected to the bottom of the purification box 1, an L-shaped plate 2 is movably sleeved on the outer side of the U-shaped round rod, and the L-shaped plate 2 is fixed to the bottom of the base plate.

[0009] Preferably, a sleeve block is fixedly sleeved on the middle part of the outer side of the U-shaped round rod, the top of the sleeve block is rotatably connected to screw rod 2, the top of screw rod 2 is fixedly connected to support shaft 2, the top of support shaft 2 is rotatably connected to the bottom of purification box 1, and L-shaped plate 2 is threadedly sleeved on the outer side of screw rod 2.

[0010] Preferably, a motor is fixedly mounted on the inner wall of the L-shaped frame, a transmission shaft is fixedly connected to the motor, a bottom sleeve is fixedly mounted on the bottom of the purification box, the transmission shaft passes through the bottom sleeve and is rotatably connected to the bottom sleeve, and a conveyor belt is transmission-connected between the transmission shaft and the support shaft.

[0011] Preferably, one end of the transmission shaft away from the motor is fixedly connected with bevel gear 2, and the outer side of the support shaft 2 is fixedly installed with bevel gear 1, and bevel gear 1 is meshingly connected with bevel gear 2.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) In this utility model, through the cooperation among the first screw rod, the first L-shaped plate, and the guide rod, when the first support shaft rotates, it is convenient for the side plate to move to open the second opening, so that the second cleaning brush can move to clean the surface of the second filter screen, enabling the impurities on the second filter screen to be discharged from the second opening. And through the cooperation among the second screw rod, the second L-shaped plate, and the U-shaped round rod, when the second support shaft rotates, it is convenient for the bottom plate to move to open the first opening, so that the first cleaning brush can move to clean the surface of the first filter screen, enabling the impurities on the first filter screen to be discharged from the first opening, thus facilitating the cleaning of the first filter screen and the second filter screen.

[0014] (2) This new type is convenient for the rotation of the first support shaft through the cooperation among the motor, the transmission shaft, and the conveyor belt, and is convenient for the rotation of the second support shaft through the cooperation between the second bevel gear and the first bevel gear, thus facilitating the simultaneous cleaning of the first filter screen and the second filter screen and improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model.

[0016] In the drawings:

[0017] Figure 1 is a schematic structural diagram of the waste lithium battery electrolyte circulation recovery and purification device of the present utility model;

[0018] Figure 2 is a schematic cross-sectional structure diagram of the first purification box and the second purification box of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the cleaning mechanism of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the second L-shaped plate of the present utility model.

[0021] In the figure: 1. First purification box; 2. Cleaning mechanism; 201. Side plate; 202. First L-shaped plate; 203. Guide rod; 204. First screw; 205. First support shaft; 206. L-shaped frame; 207. Conveyor belt; 208. Motor; 209. Drive shaft; 2010. Bottom sleeve; 2011. Second screw; 2012. Sleeve block; 2013. U-shaped round rod; 2014. Second L-shaped plate; 2015. First connecting column; 2016. First cleaning brush; 2017. First mounting plate; 2018. Second mounting plate; 2019. First sealing ring; 2020. Second cleaning brush; 2021. Second connecting column; 2022. Bottom plate; 2023. Second sealing ring; 2024. Second support shaft; 2025. First bevel gear; 2026. Second bevel gear; 3. Second purification box; 4. Connecting pipe; 5. Liquid storage pipe; 6. Drain pipe; 7. Return pipe; 8. Liquid outlet pipe; 9. Circulation pump; 10. First opening; 11. Second opening; 12. First filter screen; 13. Second filter screen. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0023] Embodiment 1 is given by Figure 1-2 This utility model includes a first purification box 1, an adsorption plate is fixed inside the first purification box 1, a negative ion generator is fixed outside the first purification box 1, and the adsorption plate is connected to the negative ion generator, which is convenient for adsorbing impurity ions in the electrolyte of waste lithium batteries. A second purification box 3 is fixedly installed on the top of the first purification box 1, a cleaning mechanism 2 is arranged between the first purification box 1 and the second purification box 3, a circulation pump 9 is fixedly installed on the top of the first purification box 1, a liquid outlet pipe 8 is fixedly connected between the circulation pump 9 and the first purification box 1, a connecting pipe 4 is fixedly connected to the top of the second purification box 3, a liquid storage pipe 5 is fixedly connected to the top end of the connecting pipe 4, a drain pipe 6 is fixedly connected to the outside of the liquid storage pipe 5, electromagnetic valves are installed on both the connecting pipe 4 and the drain pipe 6, a return pipe 7 is fixedly connected between the liquid storage pipe 5 and the circulation pump 9, a first filter screen 12 is fixedly installed inside the first purification box 1, a first opening 10 is arranged at the bottom of the first purification box 1, a second filter screen 13 is fixedly installed inside the second purification box 3, a second opening 11 is arranged on the second purification box 3, and the inner diameter value of the filter holes on the second filter screen 13 is greater than the inner diameter value of the filter holes on the first filter screen 12, which is convenient for improving the purification accuracy of the electrolyte of waste lithium batteries;

[0024] In the use state, first, the waste lithium battery electrolyte is added into the liquid storage pipe 5. Then, the waste lithium battery electrolyte enters the second purification box 3 through the connecting pipe 4. The waste lithium battery electrolyte is preliminarily filtered by the second filter screen 13. The waste lithium battery electrolyte after preliminary filtration enters the first purification box 1 and is secondarily filtered by the first filter screen 12 to achieve the purification treatment of the waste lithium battery electrolyte. Then, the circulation pump 9 is started, and the filtered waste lithium battery electrolyte in the first purification box 1 is extracted through the liquid outlet pipe 8 and re-enters the liquid storage pipe 5 through the return pipe 7. Finally, the circulation recovery of the waste lithium battery electrolyte is realized.

[0025] Specifically, it is given by Figure 3-4 The cleaning mechanism 2 includes a side plate 201 located outside the second purification box 3. A first sealing ring 2019 is fixedly connected to the outside of the second purification box 3 at the second opening 11. The side plate 201 is attached to the first sealing ring 2019. A second cleaning brush 2020 is provided at the top of the second filter screen 13. The top of the second cleaning brush 2020 is fixedly connected to a second mounting plate 2018. Two second connecting columns 2021 are symmetrically and fixedly connected between the second mounting plate 2018 and the side plate 201. A bottom plate 2022 is provided at the bottom of the first purification box 1. A second sealing ring 2023 is fixedly connected to the bottom of the first purification box 1 at the first opening 10. The bottom plate 2022 is attached to the second sealing ring 2023. By setting the first sealing ring 2019 and the second sealing ring 2023, the leakage of the electrolyte is avoided. A first cleaning brush 2016 is provided on the right side of the first filter screen 12. A first mounting plate 2017 is fixedly connected to the first cleaning brush 2016. Two first connecting columns 2015 are symmetrically and fixedly connected between the first mounting plate 2017 and the bottom plate 2022. An L-shaped frame 206 is fixedly installed on the outside of the second purification box 3. A first support shaft 205 is rotatably connected to the inner side wall of the L-shaped frame 206. One end of the first support shaft 205 away from the L-shaped frame 206 is fixedly connected to a first screw rod 204. One end of the first screw rod 204 away from the first support shaft 205 is rotatably connected to the second purification box 3. A first L-shaped plate 202 is threadedly sleeved on the outside of the first screw rod 204. The first L-shaped plate 202 is fixed to the side of the side plate 201 away from the second purification box 3. A guide rod 203 is fixedly connected between the L-shaped frame 206 and the second purification box 3. The first L-shaped plate 202 is movably sleeved on the outside of the guide rod 203. A U-shaped round rod 2013 is fixedly connected to the bottom of the first purification box 1. A second L-shaped plate 2014 is movably sleeved on the outside of the U-shaped round rod 2013. The second L-shaped plate 2014 is fixed to the bottom of the bottom plate 2022. A sleeve block 2012 is fixedly sleeved in the middle of the outside of the U-shaped round rod 2013. A second screw rod 2011 is rotatably connected to the top of the sleeve block 2012. The top of the second screw rod 2011 is fixedly connected to a second support shaft 2024. The top of the second support shaft 2024 is rotatably connected to the bottom of the first purification box 1. The second L-shaped plate 2014 is threadedly sleeved on the outside of the second screw rod 2011;

[0026] When in use, first, the support shaft 205 is rotated to drive the screw rod 204 to rotate, and drive the L-shaped plate 202 to slide along the guide rod 203, and at the same time, the side plate 201 moves horizontally to open the opening 11, and drives the mounting plate 2018 to move through the two connecting columns 2021, and at the same time, the cleaning brush 2020 moves horizontally to clean the surface of the filter screen 13, so that impurities are discharged from the opening 11, and then the support shaft 2024 is rotated to drive the screw rod 2011 to rotate, and slide downward along the U-shaped round rod 2013 through the L-shaped plate 2014, and at the same time, the bottom plate 2022 descends to open the opening 10, and then drives the mounting plate 2017 to move downward through the two connecting columns 2015, and at the same time, the cleaning brush 2016 descends to clean the surface of the filter screen 12, so that impurities are discharged from the opening 10, and finally, the cleaning of the filter screen 12 and the filter screen 2 13 is completed.

[0027] Specifically, by Figure 3-4 It is given that a motor 208 is fixedly installed on the inner wall of the L-shaped frame 206, and a transmission shaft 209 is fixedly connected to the motor 208. A bottom sleeve 2010 is fixedly installed on the bottom of the purification box 1, and the transmission shaft 209 passes through the bottom sleeve 2010 and is rotatably connected to the bottom sleeve 2010. The transmission shaft 209 is supported by the bottom sleeve 2010 to ensure the stability of the transmission shaft 209 during rotation. A conveyor belt 207 is transmission-connected between the transmission shaft 209 and the support shaft 1 205, and a bevel gear 2026 is fixedly connected to one end of the transmission shaft 209 away from the motor 208, and a bevel gear 2025 is fixedly installed on the outer side of the support shaft 2024, and the bevel gear 1 2025 is meshingly connected with the bevel gear 2 2026;

[0028] When in use, first start the motor 208 to drive the transmission shaft 209 to rotate, and realize the rotation of the support shaft 1 205 through the conveyor belt 207. At the same time, the transmission shaft 209 drives the bevel gear 2 2026 to rotate. Since the bevel gear 2026 is meshed and connected with the bevel gear 1 2025, the support shaft 2 2024 can be rotated. Finally, the filter screen 12 and the filter screen 2 13 are cleaned at the same time to improve the cleaning efficiency.

Claims

1. A device for recycling and purifying the electrolyte of waste lithium batteries, comprising a first purification tank (1), characterized in that: A purification box two (3) is fixedly installed on the top of the purification box one (1). A cleaning mechanism (2) is arranged between the purification box one (1) and the purification box two (3). A circulating pump (9) is fixedly installed on the top of the purification box one (1). A liquid outlet pipe (8) is fixedly connected between the circulating pump (9) and the purification box one (1). A connecting pipe (4) is fixedly connected to the top of the purification box two (3). The top of the connecting pipe (4) is fixedly connected with a liquid storage pipe (5). A liquid discharge pipe (6) is fixedly connected to the outside of the liquid storage pipe (5). A return liquid pipe (7) is fixedly connected between the liquid storage pipe (5) and the circulating pump (9). A filter screen one (12) is fixedly installed inside the purification box one (1). An opening one (10) is arranged at the bottom of the purification box one (1). A filter screen two (13) is fixedly installed inside the purification box two (3). An opening two (11) is arranged on the purification box two (3); The cleaning mechanism (2) includes a side plate (201) located outside the purification box two (3). A sealing ring one (2019) located at the opening two (11) is fixedly connected to the outside of the purification box two (3). The side plate (201) is attached to the sealing ring one (2019). A cleaning brush two (2020) is arranged on the top of the filter screen two (13). The top of the cleaning brush two (2020) is fixedly connected with a mounting plate two (2018). Two connecting columns two (2021) are symmetrically and fixedly connected between the mounting plate two (2018) and the side plate (201). A bottom plate (2022) is arranged at the bottom of the purification box one (1). A sealing ring two (2023) located at the opening one (10) is fixedly connected to the bottom of the purification box one (1). The bottom plate (2022) is attached to the sealing ring two (2023). A cleaning brush one (2016) is arranged on the right side of the filter screen one (12). The cleaning brush one (2016) is fixedly connected with a mounting plate one (2017). Two connecting columns one (2015) are symmetrically and fixedly connected between the mounting plate one (2017) and the bottom plate (2022).

2. The waste lithium battery electrolyte circulation recovery and purification device according to claim 1, characterized in that: An L-shaped frame (206) is fixedly installed on the outside of the purification box two (3). A support shaft one (205) is rotatably connected to the inner side wall of the L-shaped frame (206). One end of the support shaft one (205) away from the L-shaped frame (206) is fixedly connected with a screw rod one (204). One end of the screw rod one (204) away from the support shaft one (205) is rotatably connected to the purification box two (3). An L-shaped plate one (202) is threadedly sleeved on the outside of the screw rod one (204). The L-shaped plate one (202) is fixed to the side of the side plate (201) away from the purification box two (3). A guide rod (203) is fixedly connected between the L-shaped frame (206) and the purification box two (3). The L-shaped plate one (202) is movably sleeved on the outside of the guide rod (203).

3. A waste lithium battery electrolyte recycling and purification device according to claim 1, characterized in that: A U-shaped round rod (2013) is fixedly connected to the bottom of the purification box one (1). An L-shaped plate two (2014) is movably sleeved on the outside of the U-shaped round rod (2013). The L-shaped plate two (2014) is fixed to the bottom of the bottom plate (2022).

4. A waste lithium battery electrolyte recycling and purification device according to claim 3, characterized in that: A sleeve block (2012) is fixedly sleeved on the middle part of the outer side of the U-shaped round rod (2013). A second screw rod (2011) is rotatably connected to the top of the sleeve block (2012). The top end of the second screw rod (2011) is fixedly connected to a second support shaft (2024). The top end of the second support shaft (2024) is rotatably connected to the bottom of the first purification box (1). An L-shaped second plate (2014) is threadedly sleeved on the outer side of the second screw rod (2011).

5. The waste lithium battery electrolyte circulation recovery and purification device according to claim 2, characterized in that: A motor (208) is fixedly installed on the inner side wall of the L-shaped frame (206). A transmission shaft (209) is fixedly connected to the motor (208). A bottom sleeve (2010) is fixedly installed on the bottom of the first purification box (1). The transmission shaft (209) penetrates through the bottom sleeve (2010) and is rotatably connected to the bottom sleeve (2010). A conveyor belt (207) is drivingly connected between the transmission shaft (209) and the first support shaft (205).

6. The recycling and purification device for waste lithium battery electrolyte according to claim 5, wherein: A second bevel gear (2026) is fixedly connected to one end of the transmission shaft (209) away from the motor (208). A first bevel gear (2025) is fixedly installed on the outer side of the second support shaft (2024). The first bevel gear (2025) is meshingly connected to the second bevel gear (2026).

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