Recovery equipment for new energy battery electrolyte

Abstract

The utility model belongs to the technical field of battery processing, and particularly relates to new energy battery electrolyte recycling equipment which comprises a crushing box, a first spiral conveyor, a second spiral conveyor and a recycling box, and the crushing box is provided with a feeding port, a discharging port and a crushing mechanism; the first spiral conveyor comprises a driving motor, a rotating shaft and a feeding pipe, the rotating shaft is arranged in the feeding pipe in a penetrating mode, the rotating shaft is in transmission connection with an output shaft of the driving motor, spiral blades are arranged on the rotating shaft, a first feeding opening of the feeding pipe is connected with a discharging opening of the crushing box, a filtering plate is arranged at the bottom of the feeding pipe, and a liquid collecting hopper is connected to the lower portion of the feeding pipe; a second feeding hole of the second screw conveyor is connected with a first discharging hole of the first screw conveyor; a liquid inlet connected with the liquid collecting hopper is formed in the top of the recycling box, and a liquid outlet pipe is connected to the bottom of the recycling box. The device has the functions of crushing, conveying and extruding new energy batteries, electrolyte can be recycled as much as possible, and the resource utilization rate is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery processing, and specifically relates to a device for recovering electrolyte of a new energy battery. Background Art

[0002] New energy batteries, typically using materials containing lithium as electrodes, are representative of modern high-performance batteries, such as lithium iron phosphate batteries, lithium batteries, and ternary lithium batteries. The electrolyte in new energy batteries primarily conducts electricity and transfers ions between the positive and negative electrodes. It is a key component within the battery, providing electrolyte ions and maintaining electrical neutrality between the positive and negative electrodes. It also facilitates regeneration reactions and transfers charge. The chemical composition of the electrolyte also directly impacts battery performance. The main components of the electrolyte include solvents (such as carbonates, sulfites, and sulfones), solutes (such as lithium salts), and additives. Because heavy metal ions and toxic compounds in lithium battery electrolytes pose a health hazard to humans, and substances such as diethyl carbonate, phosphorus pentafluoride, hydrofluoric acid, and lithium hexafluorophosphate can pollute natural resources and land, the recycling and centralized treatment of used lithium batteries is essential.

[0003] Currently, used lithium batteries are first crushed, the crushed shells are screened out for subsequent processing, and the electrolyte is recovered separately, separating the organic solvent and lithium salts for recycling, improving environmental protection and economic efficiency. However, the crushed battery shells often contain some electrolyte, which is difficult to separate and affect subsequent processing and also results in a certain amount of material waste.

[0004] Therefore, there is an urgent need for a new energy battery electrolyte recovery device to solve the above problems. Utility Model Content

[0005] In response to the above-mentioned defects in the prior art, the utility model provides a new energy battery electrolyte recovery device, including a crushing box, a first screw conveyor, a second screw conveyor and a recovery box. The top of the crushing box is provided with a loading port, the bottom of the crushing box is provided with a unloading port, and the crushing box is provided with a crushing mechanism for crushing the new energy battery.

[0006] The first screw conveyor is arranged below the crushing box. The first screw conveyor includes a driving motor, a rotating shaft and a feeding pipe. The driving motor is arranged outside the feeding pipe. The rotating shaft is passed through the feeding pipe. One end of the rotating shaft is transmission-connected to the output shaft of the driving motor. A spiral blade is installed on the rotating shaft, and the spiral blade matches the inner cavity of the feeding pipe. A first feed port is provided at one end of the feeding pipe and a first discharge port is provided at the other end. The first feed port is connected to the discharge port of the crushing box. A filter plate is provided at the bottom of the feeding pipe. A liquid collecting hopper is connected below the feeding pipe, and the filter plate is located in the liquid collecting hopper.

[0007] The second screw conveyor is provided with a second feed port and a second discharge port, and the second feed port is connected to the first discharge port of the first screw conveyor through a material guide pipe.

[0008] The recovery box is arranged below the first screw conveyor. A liquid inlet and a top cover are arranged on the top of the recovery box. The liquid inlet is connected to the bottom of the liquid collecting hopper through a liquid guide tube. The bottom of the recovery box is connected to a liquid outlet pipe.

[0009] Optionally, the crushing mechanism includes two crushing rollers rotatably connected to the inside of the crushing box and a crushing motor arranged outside the crushing box, the two crushing rollers are arranged opposite to each other, and the crushing motor is transmission-connected to the roller shafts of the two crushing rollers.

[0010] Optionally, a sealing cover is provided at the feeding port on the top of the crushing box, and an air inlet pipe and an air outlet pipe are connected to the box body of the crushing box.

[0011] Specifically, during the crushing process, introducing inert gas such as argon into the crushing box through the air inlet pipe can suppress fire.

[0012] Optionally, a valve is provided on the material guiding pipe.

[0013] Optionally, a liquid pump is provided on the liquid outlet pipe.

[0014] Optionally, the recycling box is provided with an iron removal mechanism, which includes a battery and multiple iron removal components. The battery is arranged on the outside of the recycling box, and the multiple iron removal components are arranged inside the recycling box. The iron removal components include a mounting frame and several iron removal cylinders. The top of the mounting frame is fixed to the bottom surface of the top cover, and the bottom of the mounting frame is provided with several mounting grooves with the same number as the iron removal cylinders. The mounting grooves are threadedly connected to the top ends of the iron removal cylinders. An electromagnet is provided inside the iron removal cylinder, and the electromagnet is circumferentially arranged around the inner wall of the iron removal cylinder. The electromagnet is electrically connected to the battery through a wire.

[0015] Specifically, since the electrode materials in waste batteries come into contact with the electrolyte, which causes corrosion of the iron materials, the electrolyte will contain a large amount of recyclable iron elements. The iron removal component can be used to adsorb the iron to the surface of the iron removal cylinder for recycling; the iron removal cylinder and the mounting frame use a threaded connection structure for easy disassembly and assembly, and a detachable cylinder cover is also provided on the top of the iron removal cylinder to facilitate inspection and replacement of the electromagnet in the cylinder.

[0016] Optionally, a filter is provided at the liquid inlet of the recovery box, and the aperture of the filter mesh is smaller than the aperture of the filter plate.

[0017] Specifically, the filter is used to filter out debris in the electrolyte, such as broken battery shells.

[0018] The present invention also includes other components that enable the normal operation of a new energy battery electrolyte recovery device, all of which are conventional technical means in the field. In addition, devices or components not specified in the present invention are all conventional technical means in the field, such as the second screw conveyor, crushing motor, drive motor, and liquid extraction pump.

[0019] The working principle of the utility model is to put the waste batteries into the crushing box from the feeding port, cover the sealing cover, start the crushing motor, drive the crushing roller to crush the waste batteries, and at the same time, inject argon protective gas into the air inlet pipe to prevent fire. The crushed battery shells fall into the feeding pipe of the first screw conveyor, and the driving motor drives the rotating shaft to rotate, and the spiral blades push the battery shells toward the first discharge port. In the process of the battery shells moving, the electrolyte will flow into the liquid collecting hopper along the filter holes of the filter plate, and then flow into the recovery box for collection. As the spiral blades continuously push and compress the battery shells, the electrolyte remaining in them is squeezed out and finally flows into the recovery box. The battery shells after extrusion and drainage are transported to the next process for processing through the second screw conveyor; under the action of the iron removal mechanism, most of the iron in the electrolyte entering the recovery box is adsorbed on the surface of the iron removal cylinder, and then the electrolyte that has been iron removed is further recovered through the liquid outlet pipe flow channel and other processes.

[0020] The beneficial effects of the present invention are that new energy batteries can be crushed by the crushing box and the crushing mechanism; the crushed battery shells can be pushed and squeezed by the first screw conveyor, and the residual electrolyte therein can be squeezed out as much as possible and recycled into the recycling box; the electrolyte can be recycled by the recycling box and the iron removal mechanism, and the iron in the electrolyte can be extracted, thereby promoting the recycling of materials and providing convenience for subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0023] Figure 2 This is a schematic structural diagram of the iron removal component of the present invention.

[0024] In the figure: 1. Crushing box, 2. Second screw conveyor, 3. Recovery box, 4. Crushing roller, 5. Driving motor, 6. Rotating shaft, 7. Feed pipe, 8. Spiral blade, 9. Filter plate, 10. Liquid collecting hopper, 11. Material guide pipe, 12. Top cover, 13. Liquid guide pipe, 14. Liquid outlet pipe, 15. Battery, 16. Iron removal component, 17. Mounting frame, 18. Iron removal cylinder, 19. Mounting slot, 20. Inlet pipe, 21. Outlet pipe, 22. Valve, 23. Liquid pump, 24. Filter. DETAILED DESCRIPTION

[0025] The present invention is described below in conjunction with the accompanying drawings and specific embodiments of the present invention. The description herein is intended only to explain the present invention and is not intended to limit the present invention. Based on the embodiments of the present invention, any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art without creative work to all other embodiments obtained based on the embodiments of the present invention shall be included within the scope of protection of the present invention.

[0026] Example

[0027] like Figure 1-2 As shown, an embodiment of the utility model provides a recycling device for new energy battery electrolyte, including a crushing box 1, a first screw conveyor, a second screw conveyor 2 and a recovery box 3. The top of the crushing box 1 is provided with a loading port, and the bottom of the crushing box 1 is provided with a unloading port. The crushing box 1 is provided with a crushing mechanism for crushing the new energy battery. The crushing mechanism includes two crushing rollers 4 rotatably connected to the inside of the crushing box 1 and a crushing motor arranged outside the crushing box 1. The two crushing rollers 4 are arranged opposite to each other on the left and right, and the crushing motor is connected to the roller shafts of the two crushing rollers 4 through transmission.

[0028] The first screw conveyor is arranged below the crushing box 1. The first screw conveyor includes a drive motor 5, a rotating shaft 6 and a feeding pipe 7. The drive motor 5 is arranged outside the feeding pipe 7. The rotating shaft 6 is passed through the feeding pipe 7. One end of the rotating shaft 6 is transmission-connected to the output shaft of the drive motor 5. A spiral blade 8 is installed on the rotating shaft 6, and the spiral blade 8 matches the inner cavity of the feeding pipe 7. A first feed port is provided at one end of the feeding pipe 7 and a first discharge port is provided at the other end. The first feed port is connected to the discharge port of the crushing box 1. A filter plate 9 is provided at the bottom of the feeding pipe 7. A liquid collecting hopper 10 is connected below the feeding pipe 7, and the filter plate 9 is located in the liquid collecting hopper 10.

[0029] The second screw conveyor 2 is provided with a second feed port and a second discharge port, and the second feed port is connected to the first discharge port of the first screw conveyor through a guide pipe 11 .

[0030] The recovery box 3 is arranged below the first screw conveyor. The top of the recovery box 3 is provided with a liquid inlet and a top cover 12. The liquid inlet is connected to the bottom of the liquid collecting bucket 10 through a liquid guide tube 13. The bottom of the recovery box 3 is connected with a liquid outlet pipe 14. The recovery box 3 is also provided with an iron removal mechanism. The iron removal mechanism includes a battery 15 and a plurality of iron removal components 16. The battery 15 is arranged outside the recovery box 3. The plurality of iron removal components 16 are all arranged inside the recovery box 3. The iron removal component 16 includes a mounting bracket 17 and a plurality of iron removal cylinders 18. The top of the mounting bracket 17 is fixed to the bottom surface of the top cover 12. The bottom of the mounting bracket 17 is provided with a plurality of mounting grooves 19 of the same number as the iron removal cylinders 18. The mounting grooves 19 are threadedly connected to the top of the iron removal cylinder 18. The iron removal cylinder 18 is provided with an electromagnet inside. , and the electromagnet is arranged circumferentially around the inner wall of the iron removal cylinder 18, and the electromagnet is electrically connected to the battery 15 through a wire. Since the electrode material in the waste battery contacts the electrolyte, the iron material is corroded, so the electrolyte will contain a large amount of recyclable iron elements. The iron removal component 16 can be used to adsorb the iron to the surface of the iron removal cylinder 18 for recycling; the iron removal cylinder 18 and the mounting frame 17 adopt a threaded connection structure, which is convenient for disassembly and assembly, and a detachable cylinder cover is also provided on the top of the iron removal cylinder 18 to facilitate inspection and replacement of the electromagnet in the cylinder.

[0031] In addition, a sealing cover is installed at the feed opening at the top of the crushing box 1. An air inlet pipe 20 and an air outlet pipe 21 are connected to the crushing box 1. During the crushing process, an inert gas such as argon is introduced into the crushing box 1 through the air inlet pipe 20 to suppress fire. A valve 22 is installed on the material guide pipe 11. A liquid pump 23 is installed on the liquid outlet pipe 14. A filter screen 24 is installed at the liquid inlet of the recovery box 3. The aperture of the filter screen 24 is smaller than that of the filter plate 9. The filter screen 24 is used to filter out debris in the electrolyte, such as broken battery shells.

[0032] The working principle of the present invention is as follows: waste batteries are put into the crushing box 1 from the loading port, the sealing cover is covered, the crushing motor is started, the crushing roller 4 is driven to crush the waste batteries, and argon protective gas is fed into the air inlet pipe 20 to prevent fire. The crushed battery shells fall into the feeding pipe 7 of the first screw conveyor, and the driving motor 5 drives the rotating shaft 6 to rotate, pushing the battery shells toward the first discharge port through the spiral blades 8. In the process of the battery shells moving, the electrolyte will flow into the liquid collecting hopper 10 along the filter holes of the filter plate 9, and then flow into the recovery box 3 for collection. As the spiral blades 8 continuously push and compress the battery shells, the electrolyte remaining therein is squeezed out and finally flows into the recovery box 3, and the battery shells after extrusion and drainage are transported to the next process through the second screw conveyor 2 for processing; the electrolyte entering the recovery box 3 is under the action of the iron removal mechanism, and most of the iron is adsorbed on the surface of the iron removal cylinder 18, and then the iron-removed electrolyte is further recovered through the liquid outlet pipe 14 flow channel other processes.

[0033] While the embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A new energy battery electrolyte recovery device, comprising a crushing box, a first screw conveyor, a second screw conveyor and a recovery box, characterized in that: The top of the crushing box is provided with a feeding port, the bottom of the crushing box is provided with a feeding port, and the crushing box is provided with a crushing mechanism for crushing new energy batteries; The first screw conveyor is arranged below the crushing box, and the first screw conveyor includes a drive motor, a rotating shaft and a feeding pipe. The drive motor is arranged outside the feeding pipe, and the rotating shaft is passed through the feeding pipe. One end of the rotating shaft is transmission-connected to the output shaft of the drive motor, and a spiral blade is installed on the rotating shaft, and the spiral blade matches the inner cavity of the feeding pipe. One end of the feeding pipe is provided with a first feed port, and the other end is provided with a first discharge port, and the first feed port is connected to the discharge port of the crushing box. A filter plate is provided at the bottom of the feeding pipe, and a liquid collecting hopper is connected below the feeding pipe, and the filter plate is located in the liquid collecting hopper. The second screw conveyor is provided with a second feed port and a second discharge port, and the second feed port is connected to the first discharge port of the first screw conveyor through a guide pipe; The recovery box is arranged below the first screw conveyor. A liquid inlet and a top cover are arranged on the top of the recovery box. The liquid inlet is connected to the bottom of the liquid collecting hopper through a liquid guide tube. The bottom of the recovery box is connected to a liquid outlet pipe.

2. The new energy battery electrolyte recovery equipment according to claim 1, characterized in that: The crushing mechanism includes two crushing rollers rotatably connected inside the crushing box and a crushing motor arranged outside the crushing box. The two crushing rollers are arranged opposite to each other on the left and right, and the crushing motor is transmission-connected to the roller shafts of the two crushing rollers.

3. The new energy battery electrolyte recovery equipment according to claim 2, characterized in that: A sealing cover is provided at the feeding port on the top of the crushing box, and an air inlet pipe and an air outlet pipe are connected to the box body of the crushing box.

4. The new energy battery electrolyte recovery equipment according to claim 3, characterized in that: A valve is provided on the material guide pipe.

5. The new energy battery electrolyte recovery equipment according to claim 4, characterized in that: A liquid pump is provided on the liquid outlet pipe.

6. The new energy battery electrolyte recovery equipment according to claim 5, characterized in that: The recycling box is provided with an iron removal mechanism, which includes a battery and multiple iron removal components. The battery is arranged on the outside of the recycling box, and the multiple iron removal components are arranged inside the recycling box. The iron removal components include a mounting frame and several iron removal cylinders. The top of the mounting frame is fixed to the bottom surface of the top cover, and the bottom of the mounting frame is provided with several mounting grooves with the same number as the iron removal cylinders. The mounting grooves are threadedly connected to the top ends of the iron removal cylinders. An electromagnet is provided inside the iron removal cylinder, and the electromagnet is circumferentially arranged around the inner wall of the iron removal cylinder. The electromagnet is electrically connected to the battery through a wire.

7. The new energy battery electrolyte recovery equipment according to claim 6, characterized in that: A filter is provided at the liquid inlet of the recovery box, and the aperture of the filter mesh is smaller than the aperture of the filter plate.

Images