Crushing and screening equipment for recycling lithium iron phosphate batteries

Abstract

The invention relates to the technical field of waste battery treatment, in particular to crushing and screening equipment for recycling lithium iron phosphate batteries, which comprises a crushing shell and is characterized in that a material gathering shell is arranged at the lower end of the crushing shell; the end part of the material gathering shell is rotationally connected with a rotating barrel; a conveying ring b is fixedly connected to the inner side of the rotating barrel; the inner side of the filtering barrel b is fixedly connected with a conveying auger; a discharging assembly is arranged at the end of the rotating barrel, the filtering barrel a and the filtering barrel b rotate along with the rotating barrel, so that materials on the inner sides of the filtering barrel a and the filtering barrel b are separated through filtering holes while rotating along with the rotating barrel, the material separation efficiency is higher, and due to the fact that the filtering barrel a and the filtering barrel b rotate, the material separation efficiency is improved. And the materials in the filter holes are thrown out through centrifugal force, so that blockage of the filter holes is reduced, the materials can be better separated through the filter holes, and blockage of the filter holes is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of waste battery treatment, in particular to a crushing and screening device for recycling lithium iron phosphate batteries. Background Art

[0002] With the development of the times, the market for battery applications is growing. At the same time, due to the limited service life of batteries and the cycle of battery use, the market is facing the problem of battery recycling. Waste lithium iron phosphate batteries may cause serious pollution to the environment if not handled properly because they contain heavy metals, electrolytes and other substances. If these substances leak, they will cause long-term damage to soil and water sources.

[0003] After searching, the publication number is (CN119114192A), which discloses a waste lithium iron phosphate battery crushing machine and its screening method, which records "the waste lithium iron phosphate batteries are poured into the crushing box from the feed rack, the crushing motor is started to control the two sets of driven gears to rotate in opposite directions, so that the two sets of crushing rollers squeeze the waste lithium iron phosphate batteries for crushing, and the crushed waste lithium iron phosphate batteries fall into the mounting rack. At the same time, the rotating motor is started to control the reciprocating screw to rotate under the engagement of bevel gear one and bevel gear two, so that the moving seat moves back and forth on the surface of the reciprocating screw, driving the scraper to move back and forth on the top of the screening net, so as to prevent the broken waste lithium iron phosphate battery particles from clogging the holes of the screening net, thereby affecting the screening of the crushed waste lithium iron phosphate batteries, avoiding the use of a vibrating screening frame for screening, and reducing the impact of vibration on the waste lithium iron phosphate battery crushing machine."

[0004] The above patent still has shortcomings in actual use: after the crushed batteries are separated, large particles that cannot pass through the filter will accumulate more and more. When large particles accumulate on the upper end of the filter, the separation of materials will be slow, and in severe cases, it will cause blockage.

[0005] Based on this, the present invention discloses a crushing and screening device for recycling lithium iron phosphate batteries. Summary of the Invention

[0006] In order to solve the technical problems raised in the background technology, the present invention provides a crushing and screening equipment for recycling lithium iron phosphate batteries, which includes a crushing shell, and a material gathering shell is provided at the lower end of the crushing shell; the end of the material gathering shell is rotatably connected to a rotating barrel; the inner side of the rotating barrel is fixedly connected to a conveying ring b; the inner side of the conveying ring b is fixedly connected to a filter barrel a; the inner side of the filter barrel a is fixedly connected to a conveying ring a; the inner side of the conveying ring a is fixedly connected to the filter barrel b; the inner side of the filter barrel b is fixedly connected to a conveying auger; a material gathering trough is provided on the inner side of the material gathering shell; the end of the conveying auger away from the rotating barrel is located on the inner side of the material gathering trough; a crushing assembly is provided on the inner side of the crushing shell; an air intake assembly and a feed assembly are provided on the outer side of the crushing shell; and a discharge assembly is provided on the end of the rotating barrel.

[0007] As a further improvement of the present technical solution, the crushing assembly includes a crushing roller, a rotating rod, a driven gear, a driving motor a, a driving gear, and a motor shell a; the inner side of the crushing shell is symmetrically connected to the crushing roller; both ends of the crushing roller are fixedly connected to the rotating rod; the rotating rod is rotatably connected to the crushing shell; the end of the rotating rod away from the crushing roller is fixedly connected to the driven gear; the two driven gears are meshed together; the end of the crushing shell is fixedly connected to the motor shell a; the inner side of the motor shell a is fixedly connected to the driving motor a; the output end of the driving motor a is fixedly connected to the driving gear; the driving gear is meshed with the driven gear; and a material gathering structure is provided on the inner side of the crushing shell.

[0008] As a further improvement of the present technical solution, a gear ring is fixedly connected to the outer side of one end of the rotating barrel close to the crushing shell; the gear ring is meshed with the corresponding driven gear.

[0009] As a further improvement of the present technical solution, the material gathering structure includes a gathering plate, a material discharge block, a gathering slope, and a mating surface; the inner side of the upper end of the crushing shell is symmetrically fixedly connected with a gathering plate; the upper end of the gathering plate is provided with a gathering slope; the lower end of the gathering plate is provided with a mating surface; the inner side of the lower end of the crushing shell is fixedly connected with a material discharge block.

[0010] As a further improvement of the present technical solution, the air intake assembly includes a ventilation box, a connecting piece, an air intake pipe, a compressor, and an air intake hole; multiple groups of air intake holes are provided at the ends of the two gathering plates that are close to each other; a ventilation box is provided on the inner side of the gathering plate; a connecting piece is provided at the end of the ventilation box away from the crushing shell; a compressor is provided on the outer side of the crushing shell; and an air intake pipe is provided between the compressor and the connecting piece.

[0011] As a further improvement of the present technical solution, the upper end of the crushing shell is fixedly connected to a diverter box; the outer side of the middle part of the diverter box is fixedly connected to a fixing frame; the inner side of the fixing frame is slidably connected to a blocking plate; the blocking plate is slidably connected to the diverter box; a limiting groove is provided on the inner side of the end of the fixing frame; the end of the blocking plate close to the limiting groove is fixedly connected to a connecting block; the connecting block is located on the inner side of the limiting groove and is slidably connected to the limiting groove; and a driving structure is provided at the end of the diverter box.

[0012] As a further improvement of the present technical solution, the driving structure includes a motor housing b, a servo motor b, a threaded rod, and a threaded block; the end of the diversion box is fixedly connected to the motor housing b; the inner side of the motor housing b is fixedly connected to the servo motor b; the output end of the servo motor b is fixedly connected to the threaded rod; the end of the connecting block (605) away from the blocking plate is fixedly connected to the threaded block; the threaded block is threadedly connected to the threaded rod.

[0013] As a further improvement of the present technical solution, the feeding assembly includes a placement rack, a conveying structure, a brine tank, and a feeding shell; a placement rack is provided on the outside of the crushing shell; a feeding shell is provided on the upper end of the diversion box; the end of the placement rack close to the crushing shell is located on the inner side of the feeding shell; a conveying structure is provided on the inner side of the placement rack; and a brine tank is opened on the inner side of the placement rack.

[0014] As a further improvement of the present technical solution, the discharging assembly includes a separation box a, a separation box b, a separation box c, and a conveying device; the separation box a is fixedly connected to the end of the rotating barrel away from the crushing shell; the separation box a is rotatably connected to the rotating barrel and the interiors are interconnected; the separation box a is fixedly connected to the end of the separation box away from the rotating barrel; the separation box b is rotatably connected to the filter barrel a and the interiors are interconnected; the separation box b is fixedly connected to the end of the separation box away from the separation box a; the separation box c is rotatably connected to the filter barrel b and the interiors are interconnected; the lower ends of the separation boxes a, b and c are all provided with conveying devices.

[0015] As a further improvement of the present technical solution, a material guide plate is fixedly connected to the upper end of the inner side of the conveying device.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the crushing and screening equipment for recycling lithium iron phosphate batteries, the filter barrel a and the filter barrel b rotate together with the rotating barrel, so that the inner materials of the filter barrel a and the filter barrel b are separated through the filter holes while following the rotation, thereby making the material separation efficiency higher. Moreover, since the filter barrel a and the filter barrel b rotate, the materials in the filter holes are thrown out by centrifugal force, thereby reducing the clogging of the filter holes, so that the filter holes can better separate the materials, thereby avoiding clogging of the filter holes.

[0017] 2. In the crushing and screening equipment used for recycling lithium iron phosphate batteries, the driven gear rotates and the driven gear engages with the gear ring to drive the rotating barrel to rotate; as long as the crushing component is started, the rotating barrel will drive the conveying auger to rotate, thereby avoiding blockage caused by only feeding but not discharging materials inside the crushing shell.

[0018] 3. In the crushing and screening equipment used for recycling lithium iron phosphate batteries, when the compressor discharges inert gas into the inner side of the crushing shell, the accumulation of combustible gas generated when the battery is crushed and the fire is reduced. At the same time, the barrier plate cuts off the flow of gas between the outside and the inside of the device, so that the combustible gas generated when the battery is crushed and the fire is quickly extinguished. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the transmission structure of the present invention; Figure 3 It is a schematic structural diagram of a cross-section of the rotary barrel of the present invention; Figure 4 It is a structural schematic diagram of the conveying ring b of the present invention; Figure 5 This is a schematic structural diagram of a cross-section of the separation box a of the present invention; Figure 6 It is a structural schematic diagram of the gathering slope of the present invention; Figure 7 It is a structural schematic diagram of the driving gear of the present invention; Figure 8 It is a schematic structural diagram of a cross-section of the crushing shell of the present invention; Figure 9 It is a structural schematic diagram of the material collecting tank of the present invention; Figure 10 It is a structural schematic diagram of the connection block of the present invention; Figure 11 It is a structural schematic diagram of the ventilation box of the present invention.

[0020] The meaning of each number in the figure is: 101 Crushing shell; 102 Material gathering shell; 103 Rotating barrel; 104 Filter barrel a; 105 Filter barrel b; 106 Conveying auger; 107 Conveying ring a; 108 Conveying ring b; 109 Material gathering trough; Crushing roller; 202, rotating rod; 203, driven gear; 204, driving motor a; 205, driving gear; 206, motor housing a; gear ring; Gathering plate; 402, blanking block; 403, gathering slope; 404, fitting surface; Ventilation box; 502, connector; 503, air inlet pipe; 504, compressor; 505, air inlet hole; 601, diverter box; 602, fixing bracket; 603, blocking plate; 604, limiting groove; 605, connecting block; 701, motor housing b; 702, servo motor b; 703, threaded rod; 704, threaded block; 801, placement rack; 802, conveying structure; 803, brine tank; 804, feed shell; 901, separation box a; 902, separation box b; 903, separation box c; 904, conveying device; 951. Material guide plate. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0022] like Figures 1-11 As shown, the lower end of the crushing shell 101 is provided with a material gathering shell 102; the end of the material gathering shell 102 is rotatably connected to the rotating barrel 103; the inner side of the rotating barrel 103 is fixedly connected with a conveying ring b108; the inner side of the conveying ring b108 is fixedly connected with a filter barrel a104; the inner side of the filter barrel a104 is fixedly connected with a conveying ring a107; the inner side of the conveying ring a107 is fixedly connected with a filter barrel b105; the inner side of the filter barrel b105 is fixedly connected with a conveying auger 106; the inner side of the material gathering shell 102 is provided with a material gathering trough 109; the end of the conveying auger 106 away from the rotating barrel 103 is located on the inner side of the material gathering trough 109; the inner side of the crushing shell 101 is provided with a crushing assembly; the outer side of the crushing shell 101 is provided with an air intake assembly and a feeding assembly; the end of the rotating barrel 103 is provided with a discharging assembly; The batteries are crushed by the crushing assembly and then fall into the inner side of the collecting trough 109. The rotating barrel 103 is then rotated so that the rotating barrel 103 drives the conveying auger 106 to rotate through multiple structures, and the conveying auger 106 brings the crushed materials into the inner side of the filter barrel b105. During the movement of the materials, the materials are separated through the filter holes on the filter barrel b105, so that the large particles are retained on the inner side of the filter barrel b105. The separated small particles enter the inner side of the filter barrel a104 through the filter holes on the filter barrel b105, and the particles are further separated through the filter holes on the filter barrel a104, so that the particles fall on the inner side of the rotating barrel 103, and the materials are transported away through the conveying ring b108, the conveying ring a107, and the conveying auger 106.

[0023] The crushing assembly includes a crushing roller 201, a rotating rod 202, a driven gear 203, a driving motor a204, a driving gear 205, and a motor housing a206; the crushing roller 201 is symmetrically connected to the inner side of the crushing shell 101; both ends of the crushing roller 201 are fixedly connected to the rotating rod 202; the rotating rod 202 is rotationally connected to the crushing shell 101; the end of the rotating rod 202 away from the crushing roller 201 is fixedly connected to the driven gear 203; the two driven gears 203 are meshed together; the end of the crushing shell 101 is fixedly connected to the motor housing a206; the inner side of the motor housing a206 is fixedly connected to the driving motor a204; the output end of the driving motor a204 is fixedly connected to the driving gear 205; the driving gear 205 is meshed with the driven gear 203; a material gathering structure is provided on the inner side of the crushing shell 101.

[0024] A gear ring 301 is fixedly connected to the outer side of the rotating barrel 103 near the crushing shell 101 ; the gear ring 301 is meshed with the corresponding driven gear 203 .

[0025] The feeding assembly includes a placement rack 801, a conveying structure 802, a brine tank 803, and a feed shell 804; the placement rack 801 is provided on the outside of the crushing shell 101; the feed shell 804 is provided on the upper end of the diversion box 601; the end of the placement rack 801 close to the crushing shell 101 is located on the inner side of the feed shell 804; the conveying structure 802 is provided on the inner side of the placement rack 801; and the brine tank 803 is opened on the inner side of the placement rack 801.

[0026] The discharging assembly includes a separation box a901, a separation box b902, a separation box c903, and a conveying device 904; the separation box a901 is fixedly connected to the end of the rotating barrel 103 away from the crushing shell 101; the separation box a901 is rotatably connected to the rotating barrel 103 and the interiors are interconnected; the separation box b902 is fixedly connected to the end of the separation box a901 away from the rotating barrel 103; the separation box b902 is rotatably connected to the filter barrel a104 and the interiors are interconnected; the separation box b902 is fixedly connected to the end of the separation box a901 away from the separation box a901; the separation box c903 is rotatably connected to the filter barrel b105 and the interiors are interconnected; the lower ends of the separation boxes a901, b902 and c903 are all provided with a conveying device 904.

[0027] A material guide plate 951 is fixedly connected to the upper end of the inner side of the conveying device 904 .

[0028] Working principle: brine is placed inside the brine tank 803, and then the batteries are soaked in the brine. The conveying structure 802 is then started, so that the conveying structure 802 transports the soaked batteries to the inside of the feed shell 804. The materials enter the inner side of the material gathering shell 102 through the diverter box 601. The drive motor a204 is then started, so that the output end of the drive motor a204 drives the drive gear 205 to rotate. When the drive gear 205 rotates, the drive gear 205 engages with the driven gear 203, so that the two sets of crushing rollers 201 rotate with each other, thereby crushing the batteries. The crushed batteries enter the inner side of the material gathering shell 102. As the driven gear 203 rotates, the driven gear 203 engages with the gear ring 301, thereby driving the rotating barrel 103 to rotate. As a result, as soon as the crushing assembly is started, the rotating barrel 103 drives the conveying auger 106 to rotate, thereby preventing the crushing shell 101 from only feeding in but not discharging materials, thereby preventing blockage. The batteries are crushed by the crushing assembly and then fall into the inner side of the collecting trough 109. The rotating barrel 103 is then rotated, so that the rotating barrel 103 drives the conveying auger 106 to rotate through multiple structures, and the conveying auger 106 brings the crushed materials into the inner side of the filter barrel b105. During the movement of the materials, the materials are separated through the filter holes on the filter barrel b105, so that large particles are retained on the inner side of the filter barrel b105. The separated particles enter the inner side of the filter barrel a104 through the filter holes on the filter barrel b105, and are further separated by the filter holes on the filter barrel a104, so that small particles fall into the inner side of the rotating barrel 103. The material inside the filter barrel a104 is transported to the inside of the separation box c903 through the conveying auger 106, so that the separation box c903 transports the large particles of material to the next working procedure through the conveying device 904 at the lower end of the separation box c903. At the same time, the medium particles of material between the filter barrel b105 and the conveying ring b108 are transported to the conveying device 904 at the lower end of the separation box b902 through the conveying ring a107, and then transported to the next procedure through the conveying device 904. At the same time, the material between the filter barrel a104 and the rotating barrel 103 is transported to the inner side of the separation box a901 through the conveying ring b108, and the material is transported to the next working procedure through the conveying device 904 at the lower end of the separation box a901. The upper ends of the multiple groups of conveying devices 904 are all provided with guide plates 951, so that when the material falls from the inner side of the separation box a901, the separation box b902, and the separation box c903, the material can better fall on the inner middle part of the conveying device 904.

[0029] This step: the filter barrel a104 and the filter barrel b105 rotate together with the rotating barrel 103, so that the inner materials of the filter barrel a104 and the filter barrel b105 are separated through the filter holes while following the rotation, thereby making the material separation efficiency higher 701, and because the filter barrel a104 and the filter barrel b105 rotate, the material in the filter holes is thrown out by centrifugal force, thereby reducing the clogging of the filter holes, so that the filter holes can better separate the materials, thereby avoiding clogging of the filter holes. Example

[0030] like Figures 1-11 As shown, the material gathering structure includes a gathering plate 401, a material discharge block 402, a gathering slope 403, and a fitting surface 404; the gathering plate 401 is symmetrically fixedly connected to the inner side of the upper end of the crushing shell 101; the upper end of the gathering plate 401 is provided with a gathering slope 403; the lower end of the gathering plate 401 is provided with a fitting surface 404; the material discharge block 402 is fixedly connected to the inner side of the lower end of the crushing shell 101.

[0031] The air intake assembly includes a ventilation box 501, a connecting piece 502, an air intake pipe 503, a compressor 504, and an air intake hole 505; multiple groups of air intake holes 505 are provided at the ends of the two gathering plates 401 that are close to each other; a ventilation box 501 is provided on the inner side of the gathering plate 401; a connecting piece 502 is provided at the end of the ventilation box 501 away from the crushing shell 101; a compressor 504 is provided on the outer side of the crushing shell 101; an air intake pipe 503 is provided between the compressor 504 and the connecting piece 502.

[0032] The upper end of the crushing shell 101 is fixedly connected to a diverter box 601; the outer side of the middle part of the diverter box 601 is fixedly connected to a fixing frame 602; the inner side of the fixing frame 602 is slidably connected to a blocking plate 603; the blocking plate 603 is slidably connected to the diverter box 601; a limiting groove 604 is provided on the inner side of the end of the fixing frame 602; the end of the blocking plate 603 close to the limiting groove 604 is fixedly connected to a connecting block 605; the connecting block 605 is located on the inner side of the limiting groove 604 and is slidably connected to the limiting groove 604; the end of the diverter box 601 is provided with a driving structure.

[0033] The driving structure includes a motor housing b701, a servo motor b702, a threaded rod 703, and a threaded block 704; the end of the diverter box 601 is fixedly connected to the motor housing b701; the inner side of the motor housing b701 is fixedly connected to the servo motor b702; the output end of the servo motor b702 is fixedly connected to the threaded rod 703; the end of the connecting block 605 away from the blocking plate 603 is fixedly connected to the threaded block 704; the threaded block 704 is threadedly connected to the threaded rod 703.

[0034] Working principle: By installing the gathering plate 401 on the inner side of the crushing shell 101, and through the gathering slope 403, the materials are gathered between the two crushing rollers 201 through the two gathering slopes 403 when entering the inner side of the crushing shell 101, so that the crushing rollers 201 can better crush the batteries; While the battery is being crushed, the compressor 504 is started, so that the compressor 504 delivers inert gas to the inside of the vent box 501 through the air inlet pipe 503, and the inert gas is mutually connected with the port of the vent box 501 through the air inlet hole 505, thereby delivering the inert gas to the inside of the material accumulation shell 102, thereby reducing the fire caused by the accumulation of combustible gas of the battery during crushing; When the battery breaks and catches fire, the servo motor b702 is started, so that the output end of the servo motor b702 drives the threaded rod 703 to rotate, and then the threaded rod 703 is threadedly connected to the threaded block 704, thereby driving the blocking plate 603 to move laterally through the connecting block 605, thereby moving the blocking plate 603 to the inner side of the diversion box 601, and dividing the diversion box 601 into two parts through the blocking plate 603, thereby sealing the fire area, and passing a large amount of inert gas at the same time, thereby quickly extinguishing the fire.

[0035] This step: When the inert gas is discharged into the inner side of the crushed shell 101 by the compressor 504, the accumulation of combustible gas generated when the battery is crushed and the possibility of fire is reduced. At the same time, the blocking plate 603 cuts off the flow of gas between the outside and the inside of the device, so that the combustible gas generated when the battery is crushed and the fire is quickly extinguished.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A crushing and screening device for recycling lithium iron phosphate batteries, comprising a crushing shell (101), characterized in that: The lower end of the crushing shell (101) is provided with a material gathering shell (102); the end of the material gathering shell (102) is rotatably connected to a rotating barrel (103); the inner side of the rotating barrel (103) is fixedly connected to a conveying ring b (108); the inner side of the conveying ring b (108) is fixedly connected to a filter barrel a (104); the inner side of the filter barrel a (104) is fixedly connected to a conveying ring a (107); the inner side of the conveying ring a (107) is fixedly connected to the filter barrel b (1 05); a conveying auger (106) is fixedly connected to the inner side of the filtering barrel b (105); a material collecting trough (109) is provided on the inner side of the material collecting shell (102); an end of the conveying auger (106) away from the rotating barrel (103) is located on the inner side of the material collecting trough (109); a crushing assembly is provided on the inner side of the crushing shell (101); an air intake assembly and a material feeding assembly are provided on the outer side of the crushing shell (101); and a material discharging assembly is provided at the end of the rotating barrel (103).

2. The crushing and screening equipment for recycling lithium iron phosphate batteries according to claim 1, characterized in that: The crushing assembly comprises a crushing roller (201), a rotating rod (202), a driven gear (203), a driving motor a (204), a driving gear (205), and a motor housing a (206); the crushing roller (201) is symmetrically rotatably connected to the inner side of the crushing housing (101); both ends of the crushing roller (201) are fixedly connected to the rotating rod (202); the rotating rod (202) is rotatably connected to the crushing housing (101); the rotating rod (202) is away from the crushing roller (201) and the inner side of the crushing housing (101) is symmetrically rotatably connected to the crushing roller (201); the rotating rod (202) is rotatably connected to the inner side of the crushing housing (101) and the inner side of the crushing housing (101) is symmetrically rotatably connected to the inner side of the crushing housing (101); the rotating rod (202) is rotatably connected to the inner side of the crushing roller (2 ... The end of the crushing shell (101) is fixedly connected to a driven gear (203); the two driven gears (203) are meshed and connected; the end of the crushing shell (101) is fixedly connected to a motor shell a (206); the inner side of the motor shell a (206) is fixedly connected to a driving motor a (204); the output end of the driving motor a (204) is fixedly connected to a driving gear (205); the driving gear (205) is meshed and connected to the driven gear (203); and a material gathering structure is provided on the inner side of the crushing shell (101).

3. The crushing and screening equipment for recycling lithium iron phosphate batteries according to claim 2, characterized in that: A gear ring (301) is fixedly connected to the outer side of one end of the rotating barrel (103) close to the crushing shell (101); the gear ring (301) is meshedly connected with the corresponding driven gear (203).

4. The crushing and screening equipment for recycling lithium iron phosphate batteries according to claim 2, characterized in that: The material gathering structure comprises a gathering plate (401), a material discharge block (402), a gathering slope (403), and a fitting surface (404); the gathering plate (401) is symmetrically fixedly connected to the inner side of the upper end of the crushing shell (101); the gathering slope (403) is provided at the upper end of the gathering plate (401); the fitting surface (404) is provided at the lower end of the gathering plate (401); and the material discharge block (402) is fixedly connected to the inner side of the lower end of the crushing shell (101).

5. The crushing and screening equipment for recycling lithium iron phosphate batteries according to claim 4, characterized in that: The air intake assembly comprises a ventilation box (501), a connecting piece (502), an air intake pipe (503), a compressor (504), and an air intake hole (505); a plurality of air intake holes (505) are provided at the ends of the two gathering plates (401) close to each other; a ventilation box (501) is provided on the inner side of the gathering plates (401); a connecting piece (502) is provided at the end of the ventilation box (501) away from the crushing shell (101); a compressor (504) is provided on the outer side of the crushing shell (101); and an air intake pipe (503) is provided between the compressor (504) and the connecting piece (502).

6. The crushing and screening equipment for recycling lithium iron phosphate batteries according to claim 5, characterized in that: The upper end of the crushing shell (101) is fixedly connected to a diversion box (601); the outer side of the middle part of the diversion box (601) is fixedly connected to a fixing frame (602); the inner side of the fixing frame (602) is slidably connected to a blocking plate (603); the blocking plate (603) is slidably connected to the diversion box (601); a limiting groove (604) is provided on the inner side of the end of the fixing frame (602); a connecting block (605) is fixedly connected to one end of the blocking plate (603) close to the limiting groove (604); the connecting block (605) is located on the inner side of the limiting groove (604) and is slidably connected to the limiting groove (604); and a driving structure is provided at the end of the diversion box (601).

7. The crushing and screening equipment for recycling lithium iron phosphate batteries according to claim 6, characterized in that: The driving structure comprises a motor housing b (701), a servo motor b (702), a threaded rod (703), and a threaded block (704); the end of the diverter box (601) is fixedly connected to the motor housing b (701); the inner side of the motor housing b (701) is fixedly connected to the servo motor b (702); the output end of the servo motor b (702) is fixedly connected to the threaded rod (703); the end of the connecting block (605) away from the blocking plate (603) is fixedly connected to the threaded block (704); and the threaded block (704) is threadedly connected to the threaded rod (703).

8. The crushing and screening equipment for recycling lithium iron phosphate batteries according to claim 6, characterized in that: The feeding assembly comprises a placement rack (801), a conveying structure (802), a brine tank (803), and a feeding shell (804); the placement rack (801) is provided on the outside of the crushing shell (101); the feeding shell (804) is provided on the upper end of the diversion box (601); the end of the placement rack (801) close to the crushing shell (101) is located on the inner side of the feeding shell (804); the conveying structure (802) is provided on the inner side of the placement rack (801); and the brine tank (803) is provided on the inner side of the placement rack (801).

9. The crushing and screening equipment for recycling lithium iron phosphate batteries according to claim 1, characterized in that: The discharging assembly comprises a separation box a (901), a separation box b (902), a separation box c (903), and a conveying device (904); the end of the rotating barrel (103) away from the crushing shell (101) is fixedly connected to the separation box a (901); the separation box a (901) is rotatably connected to the rotating barrel (103) and the interiors are mutually connected; the end of the separation box a (901) away from the rotating barrel (103) is fixedly connected to the separation box b (902); the separation box b (902) is rotatably connected to the filtering barrel a (104) and the interiors are mutually connected; the end of the separation box b (902) away from the separation box a (901) is fixedly connected to the separation box c (903); the separation box c (903) is rotatably connected to the filtering barrel b (105) and the interiors are mutually connected; the lower ends of the separation boxes a (901), the separation boxes b (902) and the separation box c (903) are all provided with a conveying device (904).

10. The crushing and screening equipment for recycling lithium iron phosphate batteries according to claim 9, characterized in that: A material guide plate (951) is fixedly connected to the upper end of the inner side of the conveying device (904).

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