Graded crushing device for recycling waste lithium batteries

Abstract

The utility model provides a graded crushing device for recycling waste lithium batteries. The graded crushing device comprises a soaking tank, a crushing device and a crushing device, a first-stage crushing mechanism, a second-stage crushing mechanism and a third-stage crushing mechanism are sequentially arranged in the crushing box from top to bottom, the first-stage crushing mechanism comprises a plurality of first pressing rollers and a plurality of second pressing rollers, the first pressing rollers and the second pressing rollers are driven by a rotary driving device to annularly rotate, the rotating directions of the first pressing rollers are opposite, and the second pressing rollers are correspondingly and annularly arranged on the outer sides of the first pressing rollers; a first extrusion area is formed between the multiple first pressing rollers and the multiple second pressing rollers, the second-stage crushing mechanism comprises a small millstone set spaced from the inner wall of the crushing box, the third-stage crushing mechanism comprises a large millstone set rotationally abutting against the inner wall of the crushing box, and an opening is formed in the top of the crushing box and communicates with the upper end of the first extrusion area; and a discharge hole communicated with the grinding gap of the large grinding disc group is formed in one side of the outer bottom of the crushing box. The waste lithium battery can be completely powdered after being subjected to three-stage crushing, recyclable resources carried by the waste lithium battery can be thoroughly recycled, and resource waste is avoided.

Description

Technical Field

[0001] The utility model relates to the field of grading and crushing devices, in particular to a grading and crushing device used for recycling waste lithium batteries. Background Art

[0002] Lithium batteries contain a large amount of resources such as metallic copper and lithium battery powder, so the recycling of waste lithium batteries has extremely high commercial value. Currently, lithium batteries are mainly crushed by crushing equipment for recycling.

[0003] However, existing crushing devices usually only have one crushing mode, such as a cam combined with a transmission mechanism and an extrusion device for crushing, which makes it difficult to completely crush waste lithium batteries into powder, resulting in incomplete resource recovery and waste of resources.

[0004] The purpose of this utility model is to design a grading and crushing device for recycling waste lithium batteries in view of the problems existing in the above-mentioned prior art. Utility Model Content

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides a grading and crushing device for recycling waste lithium batteries, which can effectively solve the problems existing in the above-mentioned prior art.

[0006] The technical solution of the utility model is:

[0007] A grading and crushing device for recycling waste lithium batteries, comprising:

[0008] The immersion tank has one side wall provided with a movable door driven to open and close by a first driving device;

[0009] A crushing box, wherein a primary crushing mechanism, a secondary crushing mechanism and a tertiary crushing mechanism are sequentially arranged inside the crushing box from top to bottom, wherein the primary crushing mechanism comprises a plurality of first pressure rollers and a plurality of second pressure rollers which are driven by a rotary driving device to rotate in an annular manner and in opposite directions, the plurality of second pressure rollers are correspondingly arranged on the outer sides of the plurality of first pressure rollers, and a first extrusion zone is formed between the plurality of first pressure rollers and the second pressure rollers, the secondary crushing mechanism comprises a small grinding disc group which is arranged at a distance from the inner wall of the crushing box, the small grinding disc group is provided with a plurality of first feeding holes which correspond to the first extrusion zone and are connected to the grinding gap of the small grinding disc group, the tertiary crushing mechanism comprises a large grinding disc group which is arranged to be rotatably abutted against the inner wall of the crushing box, the large grinding disc group is provided with a plurality of second feeding holes which correspond to the small grinding disc group and are connected to the grinding gap of the large grinding disc group, the top opening of the crushing box is arranged to be connected to the upper end of the first extrusion zone, and one side of the outer bottom of the crushing box is provided with a discharge port which is connected to the grinding gap of the large grinding disc group;

[0010] A conveying mechanism, disposed between the movable door and the top opening of the crushing box, for conveying the material in the immersion box to the crushing box;

[0011] The discharging mechanism is arranged outside one side of the crushing box and is connected to the discharging port for discharging.

[0012] Furthermore, the rotation driving device includes a first rotating shaft driven by a rotating motor and vertically arranged, a forward bevel gear fixedly sleeved on the outer side of the first rotating shaft with bevel teeth facing upward, a reverse bevel gear rotatably sleeved on the outer side of the first rotating shaft with bevel teeth facing downward, a plurality of pairs of interlocking bevel gears arranged vertically and meshing with the forward bevel gear and the reverse bevel gear up and down, a plurality of limiting shafts that transversely penetrate the first rotating shaft and are fixedly arranged, a plurality of pairs of the interlocking bevel gears are symmetrically rotatably sleeved on the two ends of a plurality of the limiting shafts, the top and bottom of the reverse bevel gear and the forward bevel gear are respectively raised to form a first boss and a second boss, a plurality of the first pressure rollers are annularly fixed on the top of the first boss, a plurality of crankshafts are annularly fixed on the side of a plurality of the second bosses, a plurality of the crankshafts are extended outward and then folded upward, and a plurality of the second pressure rollers are fixedly sleeved on the upper ends of a plurality of the crankshafts.

[0013] Furthermore, the diameter of the second pressing roller is 1.5 to 2.5 times that of the first pressing roller, the upper end of the first rotating shaft extends to be flush with the upper end of the first pressing roller to form a third pressing roller, and a second extrusion zone is formed between the third pressing roller and a plurality of the second pressing rollers.

[0014] Furthermore, the outer wall of the second pressing roller is raised to form a plurality of extrusion parts, and the outer walls of the plurality of extrusion parts are respectively provided with protruding extrusion ridges.

[0015] Furthermore, the small grinding disc group includes a first rotating grinding disc and a first fixed grinding disc with upper and lower gaps, the large grinding disc group includes a second rotating grinding disc and a second fixed grinding disc with upper and lower gaps, the first rotating grinding disc and the second rotating grinding disc are fixedly sleeved on the first rotating shaft, the inner wall of the crushing box forms a gap ring from top to bottom, a first-level limiting part arranged on the outer side of the first-level crushing mechanism, a spacer ring arranged on the second-level limiting part on the outer side of the second-level crushing mechanism, and a third-level limiting part arranged on the outer side of the third-level crushing mechanism, the first rotating grinding disc gap is rotatably arranged on the bottom side of the first-level limiting part, the second rotating grinding disc is rotatably abutted against the bottom of the second-level limiting part and in the third-level limiting part, the first fixed grinding disc and the second fixed grinding disc are spaced and sleeved on the outer side of the first rotating shaft and are respectively fixed in the second-level limiting part and the third-level limiting part, a plurality of the first feeding holes and a plurality of the second feeding holes are respectively penetrated on the first rotating grinding disc and the second rotating grinding disc, and the discharge port is penetrated on the side of the third-level limiting part close to the discharge mechanism.

[0016] Furthermore, the discharge mechanism includes a discharge box with one side fixed to the outer wall of the crushing box and connected to the discharge port at the lower part, and a plurality of discharge pipes arranged at the bottom of the discharge box and connected to the discharge box. The discharge box is provided with a plurality of dredging devices corresponding to those arranged above the feed ports of the plurality of discharge pipes. The dredging devices include a plurality of second rotating shafts driven to rotate by a second driving device, and a plurality of dredging rings with one side annularly fixed to the outer wall of the second rotating shaft.

[0017] Furthermore, a side wall of the discharge box away from the crushing box is provided as a cover body that can be rotated upward to open, a support plate is provided horizontally in the discharge box, the second rotating shaft is rotatably provided between the support plate and the bottom of the discharge box, the bottom of the discharge box is provided with a discharge hole which is ring-arranged on the outside of the second rotating shaft and connected to the feed port of the discharge pipe, and after the cover body is closed, the support plate divides the inside of the discharge box into a discharge area and an installation area arranged up and down, the second driving device is arranged in the installation area, and the discharge area is connected to the discharge port.

[0018] Furthermore, the inner bottom of the immersion tank is gradually inclined downward along a side close to the conveying mechanism to form a slope, and the conveying mechanism includes a conveyor belt connecting the bottom of one side of the immersion tank and the top opening of the crushing box, and a transmission wheel group arranged in the conveyor belt and driven by a motor, and a water storage tank with a top opening is provided at the bottom of the conveying mechanism, and a plurality of water guide holes connected to the water storage tank are opened on the conveyor belt. Baffles extending along the conveying direction of the conveyor belt and respectively blocking both sides of the conveyor belt are provided on both sides of the top of the water storage tank, and a drainage hole sealed by a plug is provided at the bottom of one side of the water storage tank.

[0019] Furthermore, the top of the crushing box is set as a receiving hopper, the top of the receiving hopper is opened and the bottom opening is connected to the inner side of the first-level limiting part.

[0020] Therefore, the utility model provides the following effects and / or advantages:

[0021] 1. The present application sets a primary crushing mechanism, a secondary crushing mechanism and a tertiary crushing mechanism, so that when the waste lithium batteries are soaked in a water tank and transported to the crushing box through a conveying mechanism, they first enter the first extrusion area and are squeezed by a plurality of first and second pressure rollers for primary crushing, then enter the grinding gap of the small grinding disc group through the first feeding hole for rolling for secondary crushing, and finally enter the grinding gap of the large grinding disc group through the second feeding hole for secondary rolling for tertiary crushing into powder, and then enter the discharging mechanism through the discharging port and are discharged to the next process, so that the waste lithium batteries are completely powdered after the tertiary crushing, and the recyclable resources carried by the waste lithium batteries are completely recovered to avoid waste of resources.

[0022] 2. In the present application, the upper end of the first rotating shaft is extended to be flush with the upper end of the first pressing roller to form a third pressing roller, and a second squeezing area is formed between the third pressing roller and the plurality of second pressing rollers. Thus, the waste lithium batteries are crushed together by squeezing between the third pressing roller and the plurality of second pressing rollers, and waste lithium batteries of different sizes are squeezed and crushed by the first squeezing area and the second squeezing area, respectively, thereby improving the adaptability and crushing effect of the primary crushing mechanism.

[0023] 3. The present application can prevent the waste lithium batteries in the primary crushing mechanism from falling out of the gap between the second rollers before being completely crushed by the setting of the primary limiting part, ensure that the waste lithium batteries are completely crushed by the primary crushing mechanism before falling, and guide and limit the falling of the waste lithium batteries after the primary crushing, ensuring that they fall to the top of the first rotating grinding disc of the small grinding disc group and enter the first feeding hole under the action of the rotating centrifugal force; the setting of the secondary limiting part can control the falling of the waste lithium battery powder after the secondary crushing of the small grinding disc group. The guide limit ensures that it falls to the top of the second rotating grinding disc of the large grinding disc group and enters the second feeding hole under the action of the rotating centrifugal force; through the setting of the three-stage limit part, the discharge of the waste lithium battery powder after the three-stage crushing of the large grinding disc group can be limited and guided to ensure that it will not remain in the crushing box, but will be discharged into the discharge mechanism through the discharge port under the action of the rotating centrifugal force, thereby improving the stability of the first-stage crushing mechanism, the second-stage crushing mechanism and the third-stage crushing mechanism in the crushing box to crush the waste lithium batteries and improving the crushing effect.

[0024] 4. The present application provides a dredging device. During the discharge of powder through a plurality of discharge pipes, the dredging ring can be driven to rotate and dredge through the second rotating shaft to avoid the powder blocking the feed port of the discharge pipe, causing discharge blockage and affecting the recycling progress of waste lithium batteries.

[0025] It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The utility model provides a structural schematic diagram of a grading and crushing device for recycling waste lithium batteries.

[0027] Figure 2 It is a structural schematic diagram of the crushing box, the primary crushing mechanism, the secondary crushing mechanism and the tertiary crushing mechanism provided by the utility model after the receiving hopper is removed, wherein the crushing box is in a cross-sectional state.

[0028] Figure 3 This is a schematic structural diagram of the primary crushing mechanism, the secondary crushing mechanism and the tertiary crushing mechanism provided by the utility model.

[0029] Figure 4 This is a schematic diagram of the partial structure of the second pressing roller provided by the utility model.

[0030] Figure 5 This is a partial structural schematic diagram of the rotary drive device provided by the utility model.

[0031] Figure 6 This is a structural schematic diagram of the cover of the discharge mechanism provided by the utility model in the open state.

[0032] Figure 7 This is a schematic structural diagram of the dredging device provided by the utility model.

[0033] Figure 8 This is a structural schematic diagram of the conveying mechanism and water storage tank provided by the utility model. DETAILED DESCRIPTION

[0034] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the accompanying drawings:

[0035] refer to Figure 1-8 , a grading and crushing device for recycling waste lithium batteries, comprising:

[0036] The immersion tank 1 has one side wall configured as a movable door 11 driven by a first driving device 12 to open and close. Specifically, the immersion tank 1 is used to contain salt water. After the waste lithium batteries are immersed in the salt water for a certain period of time for discharge treatment, the phenomenon of sparks and fire caused by subsequent crushing of the lithium batteries by a crushing mechanism can be avoided. The upper end of the movable door 11 is rotatably connected to the immersion tank 1. The first driving device 12 is configured as a cylinder and the number is configured as two and they are respectively inclined at both sides of the immersion tank 1. The telescopic end of the cylinder is connected to the movable door 11, so that the lower end of the movable door 11 is driven by the cylinder to swing outward and open. In other embodiments, the movable door 11 can also be configured to be driven by the first driving device 12 to lift and open;

[0037] The crushing box 2 has a primary crushing mechanism 3, a secondary crushing mechanism and a tertiary crushing mechanism arranged therein from top to bottom. The primary crushing mechanism 3 includes a plurality of first pressing rollers 31 and a plurality of second pressing rollers 32 driven by a rotary drive device 6 to rotate in an annular manner and in opposite directions. The plurality of second pressing rollers 32 are correspondingly arranged on the outside of the plurality of first pressing rollers 31. A first squeezing area 33 is formed between the plurality of first pressing rollers 31 and the second pressing rollers 32. The secondary crushing mechanism includes a small grinding disc group 4 arranged at a distance from the inner wall of the crushing box 2. The small grinding disc The group 4 is provided with a plurality of first feeding holes 411 corresponding to the first squeezing area 33 and connected to the grinding gap of the small grinding disc group 4, the three-stage crushing mechanism includes a large grinding disc group 5 rotatably abutted against the inner wall of the crushing box 2, the large grinding disc group 5 is provided with a plurality of second feeding holes 511 corresponding to the small grinding disc group 4 and connected to the grinding gap of the large grinding disc group 5, the top opening of the crushing box 2 is provided and connected to the upper end of the first squeezing area 33, and one side of the outer bottom of the crushing box 2 is provided with a discharge port 231 connected to the grinding gap of the large grinding disc group 5;

[0038] The conveying mechanism is provided between the movable door 11 and the top opening of the crushing box 2, and is used to convey the materials in the immersion box 1 to the crushing box 2; thus, by opening and closing the movable door 11, the waste lithium batteries and salt water in the immersion box 1 can smoothly enter the conveying mechanism from the bottom;

[0039] The discharging mechanism 8 is arranged outside one side of the crushing box 2 and is connected to the discharging port 231 for discharging.

[0040] The above-mentioned structure is arranged so that when the waste lithium batteries are immersed in the immersion tank 1 and conveyed to the crushing box 2 through the conveying mechanism, they first enter the first extrusion area 33 and are squeezed by a plurality of first pressure rollers 31 and second pressure rollers 32 for primary crushing, then enter the grinding gap of the small grinding disc group 4 through the first feeding hole 411 for rolling for secondary crushing, and finally enter the grinding gap of the large grinding disc group 5 through the second feeding hole 511 for secondary rolling for tertiary crushing into powder, and then enter the discharging mechanism 8 through the discharging port 231 to be discharged to the next process, so that the waste lithium batteries are completely powdered after the tertiary crushing, and the recyclable resources carried by the waste lithium batteries are completely recovered to avoid waste of resources.

[0041] In order to realize that the first pressing rollers 31 and the second pressing rollers 32 can stably rotate in an annular manner and rotate in opposite directions, the rotation drive device 6 includes a first rotating shaft 61 driven by a rotating motor and arranged vertically, a forward bevel gear 62 fixedly sleeved on the outside of the first rotating shaft 61 with bevel teeth facing upward, a reverse bevel gear 63 rotatably sleeved on the outside of the first rotating shaft 61 with bevel teeth facing downward, a plurality of pairs of interlocking bevel gears 64 arranged vertically and meshing with the forward bevel gear 62 and the reverse bevel gear 63 up and down, and a plurality of limit shafts transversely penetrating the first rotating shaft 61 and fixedly arranged 65, several pairs of linkage bevel gears 64 are symmetrically rotatably sleeved on the two ends of several limit shafts 65, the top and bottom of the reverse bevel gear 63 and the forward bevel gear 62 are respectively raised to form a first boss 631 and a second boss 621, several first pressing rollers 31 are annularly fixed on the top of the first boss 631, several crankshafts 622 are annularly fixed on the side of several second bosses 621, several crankshafts 622 are extended outward and then folded upward, and several second pressing rollers 32 are fixedly sleeved on the upper ends of several crankshafts 622. Thus, the first rotating shaft 61 is driven by the rotating motor to rotate and drive the forward bevel gear 62 to rotate forward, and several pairs of linkage bevel gears 64 are driven by the forward bevel gear 62 to drive the reverse bevel gear 63 to rotate, so as to realize the stable annular circulation of several first pressing rollers 31 and several second pressing rollers 32 in opposite directions.

[0042] In order to prevent the powder squeezed and dropped from the first squeezing area 33 from entering the rotary drive device 6 and causing the meshing and jamming of the bevel gears, the outer side covers of the forward bevel gear 62, the reverse bevel gear 63, and the plurality of pairs of linked bevel gears 64 are provided with a protective shell 66;

[0043] In order to improve the crushing effect of the primary crushing mechanism 3, the upper end of the first rotating shaft 61 extends to be flush with the upper end of the first pressing roller 31 to form a third pressing roller 611, and a second squeezing area 612 is formed between the third pressing roller 611 and the plurality of second pressing rollers 32. Thus, the waste lithium batteries are crushed together by squeezing between the third pressing roller 611 and the plurality of second pressing rollers 32, and waste lithium batteries of different sizes are squeezed and crushed by the first squeezing area 33 and the second squeezing area 612, respectively, thereby improving the adaptability and crushing effect of the primary crushing mechanism 3.

[0044] In order to further improve the crushing effect of the primary crushing mechanism 3, the first pressing roller 31 is a small crushing roller, the second pressing roller 32 is a large crushing roller, the diameter of the second pressing roller 32 is 1.5-2.5 times that of the first pressing roller 31, preferably, the diameter of the second pressing roller 32 is twice that of the first pressing roller 31, in other embodiments, the diameters of the two can be adaptively adjusted according to specific circumstances, the outer wall of the second pressing roller 32 is raised to form a plurality of extrusion parts 321, and the outer walls of the plurality of extrusion parts 321 are respectively fixed with protruding extrusion ribs 322. Thus, the extrusion space of the first extrusion zone 33 is increased by reducing the first pressing roller 31, and the extrusion strength of the second pressing roller 32 is increased by setting a plurality of ribs 321 and extrusion ribs 322, thereby improving the extrusion effect of the first extrusion zone 33 and improving the crushing effect of the primary crushing mechanism 3 on waste lithium batteries.

[0045] In order to improve the crushing effect of the crushing box 2, the small grinding disc group 4 includes a first rotating grinding disc 41 and a first fixed grinding disc 42 set with upper and lower gaps, and the large grinding disc group 5 includes a second rotating grinding disc 51 and a second fixed grinding disc 52 set with upper and lower gaps. The first rotating grinding disc 41 and the second rotating grinding disc 51 are fixedly sleeved on the first rotating shaft 61. The inner wall of the crushing box 2 forms a first-level limiting portion 21 with a gap ring arranged on the outside of the first-level crushing mechanism 3 from top to bottom, a second-level limiting portion 22 with a spacer ring arranged on the outside of the second-level crushing mechanism, and a third-level limiting portion 23 arranged on the outside of the third-level crushing mechanism. The first rotating grinding disc 41 is gap-rotatably arranged on the bottom side of the first-level limiting portion 21, and the second rotating grinding disc 51 is rotatably abutted against the At the bottom of the secondary limiting portion 22 and in the tertiary limiting portion 23, the first fixed grinding disc 42 and the second fixed grinding disc 52 are spaced apart and sleeved on the outside of the first rotating shaft 61 and are respectively fixed in the secondary limiting portion 22 and the tertiary limiting portion 23, a plurality of the first feeding holes 411 and a plurality of the second feeding holes 511 are respectively penetrated through the first rotating grinding disc 41 and the second rotating grinding disc 51, and the discharge port 231 is penetrated through the side of the tertiary limiting portion 23 close to the discharging mechanism 8. In this embodiment, the diameter of the second rotating grinding disc 51 and the second fixed grinding disc 52 is 1.3 times that of the first rotating grinding disc 41 and the first fixed grinding disc 42. In other embodiments, the diameter of each grinding disc can be adaptively adjusted according to specific circumstances.

[0046] The above structure is arranged, through the arrangement of the primary limiting portion 21, to prevent the waste lithium batteries in the primary crushing mechanism 3 from being exposed and falling from the gap of the second pressing roller 32 before being completely crushed, to ensure that the waste lithium batteries are completely crushed by the primary crushing mechanism 3 before falling, and to guide and limit the falling of the waste lithium batteries after the primary crushing, to ensure that they fall to the top of the first rotating grinding disc 41 of the small grinding disc group 4, and enter the first feeding hole 411 under the action of the rotating centrifugal force; through the arrangement of the secondary limiting portion 22, The falling of the waste lithium battery powder after the secondary crushing by the small grinding disc group 4 can be guided and limited, ensuring that it falls to the top of the second rotating grinding disc 51 of the large grinding disc group 5 and enters the second feeding hole 511 under the action of the rotating centrifugal force; through the setting of the three-stage limiting part 23, the discharge of the waste lithium battery powder after the three-stage crushing by the large grinding disc group 4 can be limited and guided, ensuring that it will not remain in the crushing box 2, but will be discharged into the discharge mechanism 8 through the discharge port 231 under the action of the rotating centrifugal force. In this way, the stability of the first-stage crushing mechanism 3, the second-stage crushing mechanism and the third-stage crushing mechanism in the crushing box 2 in crushing waste lithium batteries is improved, and the crushing effect is improved.

[0047] Since waste lithium batteries are easily blocked by the discharge port of the discharge mechanism 8 after being crushed into powder by the internal mechanism of the crushing box 2, in this embodiment, the discharge mechanism 8 includes a discharge box 81 fixed on one side to the outer wall of the crushing box 2 and connected to the discharge port 231 at the lower part, and a plurality of discharge pipes 82 arranged at the bottom of the discharge box 81 and connected to the discharge box 81. The discharge box 81 is provided with a plurality of dredging devices 83 corresponding to those arranged above the feed ports of the plurality of discharge pipes 82. The dredging device 83 includes a plurality of second rotating shafts 831 driven to rotate by a second driving device 833, and a plurality of dredging rings 832 annularly fixed on the outer wall of the second rotating shaft 831 on one side. Specifically, the dredging ring 832 is set as a square ring, and the second driving device 833 is set as a motor. In other embodiments, the dredging ring 832 can also be set as a circular ring, an elliptical ring, etc., and the second driving device 833 can also be set as other existing driving power sources. Therefore, when the powder is discharged through the plurality of discharge pipes 82, the second rotating shaft 831 can be used to drive the dredging ring 832 to rotate and dredge the powder, so as to avoid the powder blocking the feed port of the discharge pipe 82 and causing discharge blockage, thereby affecting the recycling progress of the waste lithium batteries.

[0048] In order to isolate the waste lithium battery powder discharged by the second driving device 833 and the discharge port 231 and improve the service life of the second driving device 833, a side wall of the discharge box 81 away from the crushing box 2 is set as a cover body 811 that can be rotated upward to open, and a support plate 812 is horizontally partitioned in the discharge box 81, and the second rotating shaft 831 is rotatably arranged between the support plate 812 and the bottom of the discharge box 81, and the bottom of the discharge box 81 is provided with a discharge hole 813 which is ring-arranged on the outside of the second rotating shaft 831 and connected to the feed port of the discharge pipe 82. After the cover body 811 is closed, the support plate 812 divides the inner part of the discharge box 81 into a discharge area and an installation area arranged up and down, and the second driving device 833 is arranged in the installation area, and the discharge area is connected to the discharge port 231. Therefore, the second driving device 833 is isolated in the installation area after the cover 811 is closed, so as to avoid it being affected by powder and reducing its service life. After the cover 811 is opened, it is convenient for the staff to inspect the second driving device 833, the second rotating shaft 831 and the dredging ring 832.

[0049] In order to facilitate the automatic transportation of the used lithium batteries after immersion in the immersion tank 1 to the crushing box 2, there is no need to manually remove the brine in the immersion tank 1, thereby saving labor costs. The inner bottom of the immersion tank 1 is gradually inclined along a side close to the conveying mechanism to form a slope 13. The conveying mechanism includes a conveyor belt 7 connecting the bottom of one side of the immersion tank 1 and the top opening of the crushing box 2, a transmission wheel group arranged in the conveyor belt 7 and driven by a motor, a water storage tank 9 with a top opening is provided at the bottom of the conveying mechanism, a plurality of water guide holes 71 connected to the water storage tank 9 are opened on the conveyor belt 7, baffles 91 extending along the conveying direction of the conveyor belt 7 and respectively blocking the two sides of the conveyor belt 7 are provided on both sides of the top of the water storage tank 9, and a drainage hole sealed and blocked by a plug 92 is provided at the bottom of one side of the water storage tank 9. In this embodiment, the length of the water storage tank 9 is 0.8 times that of the transmission belt 7. In other embodiments, the lengths of the two can be adaptively adjusted according to specific circumstances. Therefore, after the movable door 11 is opened, the brine and the waste lithium batteries in the immersion tank 1 enter the conveyor belt 7 from the bottom side under the guidance of the slope 13. In the process of conveying the waste lithium batteries by the conveyor belt 7, the brine flows into the water storage tank 9 through a plurality of water guide holes 71. After long-distance transportation, it is ensured that only the waste lithium batteries and a small amount of brine carried on their surface enter the crushing box 2 for tertiary crushing into powder. At the same time, the limiting effect of the baffles 91 on both sides prevents the waste lithium batteries from escaping from the conveyor belt 7, thereby improving the transportation stability of the conveyor belt 7.

[0050] In order to facilitate the crushing box 2 to receive the waste lithium batteries transported by the conveyor belt 7, the top of the crushing box 2 is set as a receiving hopper 24, and the top of the receiving hopper 24 is opened and the bottom opening is connected to the inner side of the first-level limiting part 21.

[0051] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A grading and crushing device for recycling waste lithium batteries, characterized in that: include: A water immersion box (1) has a side wall provided with a movable door (11) driven to open and close by a first driving device (12); A crushing box (2) is provided with a primary crushing mechanism (3), a secondary crushing mechanism and a tertiary crushing mechanism in order from top to bottom. The primary crushing mechanism (3) comprises a plurality of first pressing rollers (31) and a plurality of second pressing rollers (32) which are driven by a rotary drive device (6) to rotate in a circular manner and in opposite directions. The plurality of second pressing rollers (32) are correspondingly arranged on the outside of the plurality of first pressing rollers (31). A first squeezing area (33) is formed between the plurality of first pressing rollers (31) and the second pressing rollers (32). The secondary crushing mechanism comprises a small grinding disc group (4) which is arranged at a distance from the inner wall of the crushing box (2). The small grinding disc group (4) 4) is provided with a plurality of first material inlet holes (411) corresponding to the first extrusion zone (33) and connected to the grinding gap of the small grinding disc group (4); the three-stage crushing mechanism includes a large grinding disc group (5) rotatably abutted against the inner wall of the crushing box (2); the large grinding disc group (5) is provided with a plurality of second material inlet holes (511) corresponding to the small grinding disc group (4) and connected to the grinding gap of the large grinding disc group (5); the top opening of the crushing box (2) is provided and connected to the upper end of the first extrusion zone (33); and a discharge port (231) connected to the grinding gap of the large grinding disc group (5) is provided on one side of the outer bottom of the crushing box (2); A conveying mechanism, disposed between the movable door (11) and the top opening of the crushing box (2), and used for conveying the material in the immersion box (1) into the crushing box (2); The material discharging mechanism (8) is arranged outside one side of the crushing box (2) and is connected to the material discharging port (231) for discharging material.

2. A grading and crushing device for recycling waste lithium batteries as claimed in claim 1, characterized in that: The rotary drive device (6) comprises a first rotating shaft (61) driven by a rotary motor and arranged vertically, a forward bevel gear (62) fixedly sleeved on the outside of the first rotating shaft (61) and with bevel teeth facing upward, a reverse bevel gear (63) rotatably sleeved on the outside of the first rotating shaft (61) and with bevel teeth facing downward, a plurality of pairs of linked bevel gears (64) arranged vertically and meshing with the forward bevel gear (62) and the reverse bevel gear (63) in an upper and lower direction, and a plurality of limit shafts (65) transversely penetrating the first rotating shaft (61) and fixedly arranged, wherein the plurality of pairs of linked bevel gears (64) are respectively The rotating sleeves are arranged at both ends of the plurality of limit shafts (65); the tops and bottoms of the reverse bevel gear (63) and the forward bevel gear (62) are respectively raised to form a first boss (631) and a second boss (621); the plurality of first pressure rollers (31) are annularly fixed on the tops of the first bosses (631); the sides of the plurality of second bosses (621) are annularly fixed with a plurality of crankshafts (622); the plurality of crankshafts (622) are extended outward and then folded upward; and the plurality of second pressure rollers (32) are fixedly sleeved on the upper ends of the plurality of crankshafts (622).

3. A grading and crushing device for recycling waste lithium batteries as claimed in claim 2, characterized in that: The upper end of the first rotating shaft (61) extends to be flush with the upper end of the first pressing roller (31) to form a third pressing roller (611), and a second pressing area (612) is formed between the third pressing roller (611) and a plurality of the second pressing rollers (32).

4. A grading and crushing device for recycling waste lithium batteries as claimed in claim 1, characterized in that: The diameter of the second pressing roller (32) is 1.5 to 2.5 times that of the first pressing roller (31); the outer wall of the second pressing roller (32) is protruding to form a plurality of extrusion parts (321); and the outer walls of the plurality of extrusion parts (321) are respectively provided with protruding extrusion ridges (322).

5. A grading and crushing device for recycling waste lithium batteries as claimed in claim 2, characterized in that: The small grinding disc group (4) comprises a first rotating grinding disc (41) and a first fixed grinding disc (42) which are arranged with a gap between the upper and lower parts, and the large grinding disc group (5) comprises a second rotating grinding disc (51) and a second fixed grinding disc (52) which are arranged with a gap between the upper and lower parts, the first rotating grinding disc (41) and the second rotating grinding disc (51) are fixedly sleeved on the first rotating shaft (61), and the inner wall of the crushing box (2) forms a first limiting portion (21) which is arranged with a gap on the outside of the first crushing mechanism (3), a second limiting portion (22) which is arranged with a spacer on the outside of the second crushing mechanism, and a third limiting portion (23) which is arranged with a gap on the outside of the third crushing mechanism from top to bottom, the first rotating grinding disc (41) has a gap rotating disc. The first rotating grinding disc (42) and the second rotating grinding disc (51) are rotatably arranged on the bottom side of the first limiting part (21); the second rotating grinding disc (51) is rotatably arranged on the bottom of the second limiting part (22) and in the third limiting part (23); the first fixed grinding disc (42) and the second fixed grinding disc (52) are spaced apart and sleeved on the outside of the first rotating shaft (61) and are respectively fixed in the second limiting part (22) and the third limiting part (23); a plurality of the first feeding holes (411) and a plurality of the second feeding holes (511) are respectively penetrated on the first rotating grinding disc (41) and the second rotating grinding disc (51); and the discharge port (231) is penetrated on one side of the third limiting part (23) close to the discharge mechanism (8).

6. A grading and crushing device for recycling waste lithium batteries as claimed in claim 1, characterized in that: The discharging mechanism (8) comprises a discharging box (81) having one side fixed to the outer wall of the crushing box (2) and the lower part connected to the discharging port (231), and a plurality of discharging pipes (82) arranged at the bottom of the discharging box (81) and connected to the discharging box (81). The discharging box (81) is provided with a plurality of dredging devices (83) corresponding to those arranged above the feed ports of the plurality of discharging pipes (82). The dredging devices (83) comprise a plurality of second rotating shafts (831) driven to rotate by a second driving device (833), and a plurality of dredging rings (832) having one side annularly fixed to the outer wall of the second rotating shaft (831).

7. A grading and crushing device for recycling waste lithium batteries as claimed in claim 6, characterized in that: A side wall of the discharge box (81) away from the crushing box (2) is provided as a cover body (811) that can be rotated upward to open; a support plate (812) is transversely provided inside the discharge box (81); the second rotating shaft (831) is rotatably provided between the support plate (812) and the bottom of the discharge box (81); the bottom of the discharge box (81) is provided with a discharge hole (813) which is ring-shaped on the outside of the second rotating shaft (831) and connected to the feed port of the discharge pipe (82); after the cover body (811) is closed, the support plate (812) divides the inside of the discharge box (81) into a discharge area and an installation area arranged up and down; the second driving device (833) is arranged in the installation area; and the discharge area is connected to the discharge port (231).

8. A grading and crushing device for recycling waste lithium batteries as claimed in claim 1, characterized in that: The inner bottom of the immersion tank (1) is gradually inclined downward along a side close to the conveying mechanism to form a slope (13). The conveying mechanism comprises a conveyor belt (7) connecting the bottom of one side of the immersion tank (1) and the top opening of the crushing box (2), and a transmission wheel group arranged in the conveyor belt (7) and driven by a motor. A water storage tank (9) with a top opening is arranged at the bottom of the conveying mechanism. A plurality of water guide holes (71) connected to the water storage tank (9) are opened on the conveyor belt (7). Baffles (91) extending along the conveying direction of the conveyor belt (7) and respectively blocking the two sides of the conveyor belt (7) are arranged on both sides of the top of the water storage tank (9). A drainage hole sealed by a plug (92) is arranged at the bottom of one side of the water storage tank (9).

9. A grading and crushing device for recycling waste lithium batteries as claimed in claim 5, characterized in that: The top of the crushing box (2) is provided as a receiving hopper (24), the top of the receiving hopper (24) is provided with an opening and the bottom opening is connected to the inner side of the primary limiting portion (21).

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