Ferrophosphorus positive plate material crushing and sorting system

Abstract

The utility model discloses a ferrophosphorus positive plate material crushing and sorting system, which relates to the technical field of metal recovery and solid waste recycling and comprises a crushing part, a fine crushing and screening part and a dust collecting and winnowing part. The crushing shaft is used for crushing ferrophosphorus positive plate materials into small ferrophosphorus positive plate materials, the dust collecting and winnowing part comprises a dust collecting assembly and a negative pressure pipe assembly, the dust collecting assembly is communicated with the coarse crushing machine through the negative pressure pipe assembly, and the dust collecting assembly is further communicated with the fine crushing and screening part module through the negative pressure pipe assembly; according to the arrangement, dust can be absorbed and treated by the dust collecting assembly, and dust generated by the fine crushing and screening part is prevented from being leaked.

Description

Technical Field

[0001] The utility model relates to the technical field of metal recovery and solid waste resource utilization, in particular to a ferrophosphorus positive electrode sheet material crushing and sorting system. Background Art

[0002] In the process of promoting the development of new energy, the output of batteries has gradually increased, and the disposal of waste batteries has become an urgent problem to be solved. Batteries contain a large amount of valuable metals. In order to reduce the pollution of waste batteries to the environment and recover valuable metals, waste batteries need to be processed and recycled.

[0003] The existing ferrophosphorus cathode sheet sorting system has unreasonable processing equipment design, small processing volume, and dust leakage during the processing of ferrophosphorus cathode sheets, which pollutes the environment. Secondly, due to the unreasonable processing equipment, the metal recovery in the ferrophosphorus cathode sheets is not thorough enough, that is, the waste resource utilization rate is not high, so it needs to be improved. Utility Model Content

[0004] The utility model aims to provide a ferrophosphorus positive electrode sheet material crushing and sorting system to solve the technical problems of dust leakage and incomplete waste resource utilization.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a ferrophosphorus positive electrode sheet crushing and sorting system, comprising:

[0006] A crushing part, comprising a coarse crusher, wherein a crushing shaft is arranged inside the coarse crusher, and the crushing shaft is used to crush the ferrophosphorus positive electrode flakes into small pieces of ferrophosphorus positive electrode flakes;

[0007] The fine crushing and screening section comprises a first fine crushing and screening module, a second fine crushing and screening module and a third fine crushing and screening module which are arranged in sequence, wherein the first fine crushing and screening module, the second fine crushing and screening module and the third fine crushing and screening module grind and screen the small pieces of ferrophosphorus positive electrode sheet;

[0008] The dust collecting and air separation part comprises a dust collecting component and a negative pressure pipe component, wherein the dust collecting component is connected with the coarse crushing machine through the negative pressure pipe component, and the dust collecting component is also connected with the partial module of the fine crushing and screening part through the negative pressure pipe component;

[0009] Among them, the dust collecting component is used to absorb the pole piece floating material generated by the cooperation of the coarse crushing crusher and the fine crushing and screening module, and to receive the pole piece fragments after grinding and screening by the third fine crushing and screening module, and to sort out aluminum particles and black powder from the pole piece floating material and the pole piece fragments.

[0010] Preferably, the first fine crushing and screening module comprises a first scraper conveyor, a first hammer mill and a first linear screen arranged in sequence; the second fine crushing and screening module comprises a second scraper conveyor, a second hammer mill, a first cyclone separator and a second linear screen arranged in sequence; the third fine crushing and screening module comprises a screw conveyor, a grinding mill, a second cyclone separator, a third linear screen and a third cyclone separator arranged in sequence;

[0011] Among them, the first scraper conveyor has the same structure as the second scraper conveyor; the first hammer mill has the same structure as the second hammer mill; the first linear screen machine, the second linear screen machine and the third linear screen machine have the same structure; the first cyclone separator, the second cyclone separator, the third cyclone separator and the third cyclone separator have the same structure.

[0012] Preferably, the dust collecting component includes a circular screen machine, a dust collector and a fan; the negative pressure pipe assembly includes a negative pressure connecting pipe, and the dust collector is connected with the coarse crushing machine, the first linear screen machine, the first cyclone separator, the second linear screen machine, the second cyclone separator, the third linear screen machine and the third cyclone separator through the negative pressure connecting pipe, the circular screen machine is arranged at the bottom of the third cyclone separator, and the dust collector, in cooperation with the fan, absorbs and screens the pole piece floating material generated by the coarse crushing machine, the first linear screen machine, the first cyclone separator, the second linear screen machine, the second cyclone separator, the third linear screen machine and the third cyclone separator.

[0013] Preferably, the dust collector comprises a discharge box, a discharge valve, a plurality of filter elements and a motor, the discharge valve is arranged at the bottom of the discharge box, a working box is arranged at the top of the discharge box, the interior of the working box is connected with the interior of the discharge box, and a plurality of filter elements are suspended in the interior of the working box along the vertical direction;

[0014] Among them, the working box is respectively provided with an exhaust port and a fan port on two opposite sides, the exhaust port is connected to the negative pressure connecting pipe, an air duct is arranged between the fan port and the fan, the motor output end is connected to the fan, and a chimney for accommodating the fan is also arranged outside the fan, and the chimney is connected to the air duct.

[0015] Preferably, the first scraper conveyor comprises a conveying box, a first driving member and a circular scraper chain;

[0016] The circular scraper chain is movably arranged on the side wall inside the conveying box, and a plurality of scrapers are arranged at intervals inside the circular scraper chain. The first driving member drives the circular scraper chain to make a rotational motion on the side wall inside the conveying box, thereby linking the scraper to convey the small pieces of ferrophosphorus positive electrode sheet to the first hammer mill.

[0017] Preferably, the first hammer mill comprises a hammer mill box, a second driving member, a filter screen and a hammer cutter assembly;

[0018] The hammer blade assembly is located in the hammer mill box, and the filter is arranged around the hammer blade assembly. The hammer blade assembly rotates under the driving of the second driving member to hammer the small pieces of ferrophosphorus positive electrode sheet material into first electrode sheet fragments, and the first electrode sheet fragments are filtered out through the filter.

[0019] Preferably, the first linear screen machine comprises a mounting platform, a third driving member, a screen box and a linear screen assembly;

[0020] The screen box is elastically arranged on the top of the mounting platform, and the linear screen assembly is located in the screen box.

[0021] The third driving member is disposed at the bottom of the screen box, and the third driving member drives the screen box to vibrate, thereby driving the linear screen assembly to vibrate, and the linear screen assembly screens the first pole piece fragments to separate the black material and the second pole piece fragments.

[0022] Preferably, the first cyclone separator comprises a conical box, a fourth driving member and a rotary blade;

[0023] The conical box has a first end and a second end opposite to each other, the inner diameter of the second end is smaller than the inner diameter of the first end, the rotating blade is arranged inside the second end, and the rotating blade is connected to the output end of the fourth driving member. The rotating blade is driven by the fourth driving member to rotate to centrifugally screen the second pole piece fragments ground by the first hammer mill.

[0024] Preferably, the grinding mill comprises a grinding box, a fifth driving member and a knife disc;

[0025] The cutter disc is arranged in the grinding box and connected to the fifth driving member. The cutter disc is driven by the fifth driving member to rotate and grind the pole piece fragments conveyed by the screw conveyor.

[0026] Preferably, the circular screen machine comprises a circular screen box, a sixth driving member and a second screen;

[0027] A circular box is elastically arranged on the top of the circular screen box, the second screen is built into the circular box, and the screen is parallel to the bottom of the circular box, the sixth driving member is arranged in the circular box, and the output end of the sixth driving member is connected to the outer bottom of the circular box, and the circular box vibrates under the drive of the sixth driving member, thereby driving the second screen to vibrate, so as to screen out the aluminum particles and other pole piece fragments from the pole piece fragments falling from the third cyclone separator.

[0028] Compared with the prior art, the beneficial effects of the utility model are as follows: by setting up a crushing part, the ferrophosphorus positive electrode flakes can be crushed into small pieces of ferrophosphorus positive electrode flakes to achieve coarse crushing, and then through the first fine crushing and screening module, the second fine crushing and screening module and the third fine crushing and screening module which are arranged in sequence, the small pieces of ferrophosphorus positive electrode flakes can be fully ground and finely screened to fully recover the black powder and facilitate the subsequent structure to recover the aluminum particles. Secondly, the dust collecting component is connected to the coarse crushing machine through the negative pressure pipe component, and the dust collecting component is also connected to some modules of the fine crushing and screening part through the negative pressure pipe assembly. This arrangement can absorb and process the dust by the dust collecting component to avoid the dust generated by the fine crushing and screening part from being leaked. In addition, the above design can avoid polluting the environment and can operate for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0030] Figure 2 It is a cross-sectional view of the coarse crusher in the utility model.

[0031] Figure 3 It is a cross-sectional view of the first scraper conveyor in the utility model.

[0032] Figure 4 It is a cross-sectional view of the first hammer mill in the utility model.

[0033] Figure 5 It is a cross-sectional view of the first linear screen machine in the utility model.

[0034] Figure 6 It is a cross-sectional view of the first cyclone separator in the utility model.

[0035] Figure 7 It is a cross-sectional view of the grinding mill of the utility model.

[0036] Figure 8 It is a cross-sectional view of the circular screen machine of the utility model.

[0037] Fig. 9 It is a cross-sectional view of the dust collector of the present invention (including the fan).

[0038] Fig.10 It is a cross-sectional view of the negative pressure pipe assembly in the utility model.

[0039] The reference numerals in the figures are as follows:

[0040] 1. Belt conveyor;

[0041] 2. Coarse crusher; 21. Crushing shaft;

[0042] 3. First scraper conveyor; 31. Conveying box; 32. First driving member; 33. Circular scraper chain; 331. Scraper;

[0043] 4. first hammer mill; 41. hammer mill box; 42. second driving member; 43. turntable; 431. hammer cutter; 44. filter screen;

[0044] 5. First linear screen; 51. Mounting platform; 52. Third driving member; 53. Screen box; 54. Screen frame; 55. First screen;

[0045] 6. Second scraper conveyor;

[0046] 7. Second hammer mill;

[0047] 8. first cyclone separator; 81. conical box; 82. fourth driving member; 83. rotary blade;

[0048] 9. Second linear screening machine;

[0049] 10. Screw conveyor;

[0050] 11. grinding machine; 111. grinding box; 112. fifth driving member; 113. knife disc;

[0051] 12. Second cyclone separator;

[0052] 13. The third linear screen;

[0053] 14. The third cyclone separator;

[0054] 15. round screen machine; 151. round screen box; 152. sixth driving member; 153. round box; 154. second screen;

[0055] 16. Dust collector; 161. Discharge box; 162. Working box; 163. Filter element; 164. Motor; 165. Air duct.

[0056] 17. Fan;

[0057] 18. Negative pressure pipe assembly; 181. Negative pressure connecting pipe. DETAILED DESCRIPTION

[0058] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings, wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can effortlessly recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, and this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0059] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0060] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0061] The utility model provides a ferrophosphorus positive electrode sheet crushing and sorting system, please refer to Figure 1-Figure 10The ferrophosphorus positive electrode sheet crushing and sorting system includes a crushing part, a fine crushing and screening part, a dust collection and air separation part, and other structures that meet the normal operation of the system, such as various brackets, which are respectively used to support the structures of the crushing part, the fine crushing and screening part, and the dust collection and air separation part to meet the normal operation of the system, wherein the crushing part includes a coarse crushing crusher 2, and a crushing shaft 21 is arranged inside the coarse crushing crusher 2, and the crushing shaft 21 is used to crush the ferrophosphorus positive electrode sheet into small pieces of ferrophosphorus positive electrode sheet, and the fine crushing and screening part includes a first fine crushing and screening module, a second fine crushing and screening module, and a third fine crushing and screening module that are arranged in sequence, and the first fine crushing and screening module, the second fine crushing and screening module, and the third fine crushing and screening module grind and screen the small pieces of ferrophosphorus positive electrode sheet, so as to Fully recover black powder and facilitate subsequent structure to recover aluminum particles. As for the dust collecting and air separation part, the dust collecting and air separation part includes a dust collecting component and a negative pressure pipe component 18. The dust collecting component is connected with the coarse crushing machine 2 through the negative pressure pipe component 18, and the dust collecting component is also connected with some modules of the fine crushing and screening part through the negative pressure pipe component 18. Among them, the dust collecting component is used to absorb the pole piece floating material generated by the inside of the coarse crushing machine 2 and the cooperation of some modules of the fine crushing and screening part, and receive the pole piece fragments after grinding and screening by the third fine crushing and screening module, and select aluminum particles and black powder from the pole piece floating material and the pole piece fragments. This setting can absorb and process the dust by the dust collecting component to avoid the dust generated by the fine crushing and screening part from being leaked. It should be noted that the dust refers to the pole piece floating material.

[0062] The above structure is described in detail below.

[0063] In this embodiment, please refer to Figure 2 and Fig.10 The crushing part also includes a belt conveyor 1, which mainly transports unprocessed ferrophosphorus positive electrode flakes to a coarse crusher 2. The coarse crusher 2 rotates through a crushing shaft 21 arranged inside to crush the ferrophosphorus positive electrode flakes into small pieces of ferrophosphorus positive electrode flakes. It should also be noted that the interior of the coarse crusher 2 is also connected to the negative pressure pipe assembly 18. The dust generated in the process of crushing the ferrophosphorus positive electrode flakes by the coarse crusher 2 is absorbed into the dust collecting assembly through the negative pressure pipe assembly 18.

[0064] In this embodiment, please refer to Figure 1 The first fine crushing and screening module includes a first scraper conveyor 3, a first hammer mill 4 and a first linear screen 5 which are arranged in sequence; the second fine crushing and screening module includes a second scraper conveyor 6, a second hammer mill 7, a first cyclone separator 8 and a second linear screen 9 which are arranged in sequence; the third fine crushing and screening module includes a screw conveyor 10, a grinding mill 11, a second cyclone separator 12, a third linear screen 13 and a third cyclone separator 14 which are arranged in sequence;

[0065] Among them, please refer to Figure 3The first scraper conveyor 3 and the second scraper conveyor 6 have the same structure; the first hammer mill 4 and the second hammer mill 7 have the same structure; the first linear screen machine 5, the second linear screen machine 9 and the third linear screen machine 13 have the same structure; the first cyclone separator 8, the second cyclone separator 12, the third cyclone separator 14 and the third cyclone separator 14 have the same structure.

[0066] For the connection between the first fine crushing and screening module, the second fine crushing and screening module and the third fine crushing and screening module, please refer to Figure 1 The first scraper conveyor 3 conveys the small pieces of ferrophosphorus positive electrode flakes crushed by the coarse crusher 2 to the first hammer mill 4. The first hammer mill 4 beats the small pieces of ferrophosphorus positive electrode flakes to form tiny electrode sheet fragments. In order to distinguish them from subsequent fragments, the tiny electrode sheet fragments are named first electrode sheet fragments. The first electrode sheet fragments are vibrated and screened by the first linear screen 5 to screen out black materials and second electrode sheet fragments. The larger second electrode sheet fragments are conveyed to the second hammer mill 7 by the second scraper conveyor 6. Of course, as for the dust generated in the screening of the first electrode sheet fragments, it is absorbed and processed by the dust collecting assembly through the negative pressure pipe assembly 18.

[0067] The second hammer mill 7 receives the second pole piece fragments and then performs a secondary hammering to hammer the second pole piece fragments into third pole piece fragments with finer particles. The third pole piece fragments are then centrifuged through the first cyclone separator 8. During the centrifugal separation process, the powder in the third pole piece fragments is again absorbed and processed by the dust collecting component through the air duct 165 component. As for the larger third pole piece fragments, they are vibrated and screened for the second time through the second linear screen machine 9 to screen out new black powder and larger particles of the third pole piece fragments. The third pole piece fragments are transported to the grinding machine 11 through the screw conveyor 10. Similarly, in the third pole piece fragments vibrated and screened by the second linear screen machine 9, the remaining dust is again absorbed and processed by the dust collecting component through the air duct 165 component connected thereto.

[0068] After receiving the third pole piece fragments, the grinding mill 11 grinds the third pole piece fragments three times to grind them into finer fourth pole piece fragments. The fourth pole piece fragments are then centrifuged for a second time by the second cyclone separator 12. The dust centrifuged out of the fourth pole piece fragments in the second cyclone separator 12 is still absorbed and processed by the dust collecting component through the air duct 165 component. The larger fourth pole piece fragments are vibrated and screened three times by the third linear screen machine 13, and new black powder and larger particles of the fourth pole piece fragments are screened out. The fourth pole piece fragments are further processed by the integrated component. Similarly, in the fourth pole piece fragments vibrated and screened by the third linear screen machine 13, the remaining dust is again absorbed and processed by the dust collecting component through the air duct 165 component connected thereto.

[0069] The above technical solution mainly recovers the black powder resources we need to the greatest extent by repeatedly hammering and grinding small pieces of ferrophosphorus positive electrode sheets and multiple fine screening. Secondly, the above design also improves the efficiency of subsequent metal recovery. Moreover, during the above whole process, the equipment that produces powder is subjected to negative pressure treatment to avoid leakage outside the system to pollute the environment. In fact, it should be noted that the black powder is mainly carbon powder.

[0070] In this embodiment, please refer to Figure 1 The dust collecting component includes a circular screen 15, a dust collector 16 and a fan 17; the negative pressure pipe assembly 18 includes a negative pressure connecting pipe 181, the dust collector 16 is connected with the coarse crushing machine 2, the first linear screen 5, the first cyclone separator 8, the second linear screen 9, the second cyclone separator 12, the third linear screen 13 and the third cyclone separator 14 through the negative pressure connecting pipe 181, the circular screen 15 is arranged at the bottom of the third cyclone separator 14, and the dust collector 16 absorbs and screens the pole piece floating material, i.e., dust, generated by the coarse crushing machine 2, the first linear screen 5, the first cyclone separator 8, the second linear screen 9, the second cyclone separator 12, the third linear screen 13 and the third cyclone separator 14 in cooperation with the fan 17, and specifically refers to the above content.

[0071] For details, please refer to Fig. 9 The dust collector 16 includes a discharge box 161, a discharge valve (not shown),

[0072] A dry filter element 163, a motor 164, and a discharge valve are arranged at the bottom of the discharge box 161. A working box 162 is arranged at the top of the discharge box 161. The inside of the working box 162 is connected with the inside of the discharge box 161. A plurality of filters 163 are suspended in the working box 162 in a vertical direction.

[0073] The working box 162 is provided with an air inlet and a fan outlet on opposite sides.

[0074] The fan 17 is connected to the pressure connecting pipe 181, and an air duct 165 is arranged between the fan port and the fan 17. The output end of the motor 164 is connected to the fan 17. A chimney for accommodating the fan 17 is also arranged outside the fan 17, and the chimney is connected to the air duct 165.

[0075] Regarding the working principle of the dust collector 16, the motor 164 drives the fan 17 to rotate, thereby allowing the working box 162 and the negative pressure connecting pipe 181 connected to the exhaust port of the working box 162 to generate negative pressure, so that the dust generated by each machine connected to the negative pressure connecting pipe 181 can be absorbed into the working box 162 through the negative pressure connecting pipe 181, and then the dust is filtered by the filter element 163 and discharged safely, specifically through the air duct 165 and the chimney. As for the dust not filtered by the filter element 163, it is discharged from the discharge valve through the discharge box 161.

[0076] In this embodiment, the first scraper conveyor 3 includes a conveying box 31, a first driving member 32 and a circular

[0077] The scraper chain 33 is movably arranged on the side wall inside the conveying box 31, and a plurality of scrapers 331 are arranged at intervals inside the circular scraper chain 33. The first driving member 32 drives the circular scraper chain 33 to rotate on the side wall inside the conveying box 31, and then links the scraper 331 to convey the small pieces of ferrophosphorus positive electrode sheets to the first hammer mill 4.

[0078] Furthermore, the first hammer mill 4 includes a hammer mill box 41, a second driving member 42, a filter screen 44 and a hammer cutter.

[0079] 431 assembly, the hammer knife assembly is located in the hammer mill box 41, and the filter screen 44 is arranged around the hammer knife assembly. The hammer knife assembly rotates under the drive of the second driving member 42 to beat small pieces of ferrophosphorus positive electrode sheet material into first electrode sheet fragments, and the first electrode sheet fragments are filtered out through the filter screen 44.

[0080] The hammer cutter assembly includes a rotating shaft, a rotating disk 43 is arranged outside the rotating shaft, and hammer cutters 431 are arranged on the rotating disk 43 at intervals around the rotating shaft.

[0081] As for the structural composition of the first linear screen 5, in this embodiment, the first linear screen 5 includes:

[0082] The mounting platform 51, the third driving member 52, the screen box 53 and the linear screen assembly, the screen box 53 is elastically arranged on the top of the mounting platform 51, the linear screen assembly is located in the screen box 53, the third driving member 52 is arranged at the bottom of the screen box 53, the third driving member 52 drives the screen box 53 to vibrate, and then drives the linear screen assembly to vibrate, and the linear screen assembly screens out the black material and the second pole piece fragments from the first pole piece fragments.

[0083] Specifically, the linear screen assembly includes a screen frame 54 and a first screen mesh 55 , and the screen frame 54 is used to carry the first screen mesh 55 .

[0084] Furthermore, the first cyclone separator 8 includes a conical box 81, a fourth driving member 82 and a rotary blade.

[0085] The conical box has a first end and a second end opposite to each other, the inner diameter of the second end is smaller than the inner diameter of the first end, the rotating blade 83 is arranged inside the second end, and the rotating blade 83 is connected to the output end of the fourth driving member 82. The rotating blade 83 rotates under the drive of the fourth driving member 82 to centrifugally screen the second pole piece fragments ground by the first hammer mill 4 to obtain the larger third pole piece fragments described above.

[0086] In this embodiment, the grinding machine 11 includes a grinding box 111, a fifth driving member 112 and a cutter disc 113. The cutter disc 113 is arranged in the grinding box 111 and connected to the fifth driving member 112. The cutter disc 113 is driven by the fifth driving member 112 to rotate and grind the pole piece fragments conveyed by the screw conveyor 10 to obtain the fourth pole piece fragments described above.

[0087] The round screen machine 15 includes a round screen box 151, a sixth drive member 152 and a

[0088] and a second screen 154, a circular box 153 is elastically arranged on the top of the circular screen box 151, the second screen 154 is built into the circular box 153, and the second screen 154 is parallel to the bottom of the circular box 153, the sixth driving member 152 is arranged in the circular box 153, and the output end of the sixth driving member 152 is connected to the outer bottom of the circular box 153, the circular box 153 is driven by the sixth driving member 152 to vibrate, thereby driving the second screen 154 to vibrate, so as to screen out aluminum particles and other pole piece fragments from the pole piece fragments falling from the third cyclone separator 14, and the other pole piece fragments are specifically black powder.

[0089] Regarding the above-described solution, it should also be noted that each machine or each structure is provided with a corresponding feed port and a discharge port to realize feeding and discharging.

[0090] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A ferrophosphorus positive electrode sheet crushing and sorting system, characterized in that: include: The crushing section comprises a coarse crusher (2), wherein a crushing shaft (21) is arranged inside the coarse crusher (2), and the crushing shaft (21) is used to crush the ferrophosphorus positive electrode flakes into small pieces of ferrophosphorus positive electrode flakes; The fine crushing and screening section comprises a first fine crushing and screening module, a second fine crushing and screening module and a third fine crushing and screening module which are arranged in sequence, wherein the first fine crushing and screening module, the second fine crushing and screening module and the third fine crushing and screening module grind and screen the small pieces of ferrophosphorus positive electrode sheet; A dust collection and air separation section, comprising a dust collection component and a negative pressure pipe component (18), wherein the dust collection component is connected to the coarse crushing machine (2) via the negative pressure pipe component (18), and the dust collection component is also connected to a part of the fine crushing and screening module via the negative pressure pipe component (18); The dust collecting component is used to absorb the pole piece floating material generated by the cooperation between the coarse crushing crusher (2) and the fine crushing and screening module, and to receive the pole piece crushed material after grinding and screening by the third fine crushing and screening module, and to separate aluminum particles and black powder from the pole piece floating material and the pole piece crushed material.

2. A ferrophosphorus positive electrode sheet crushing and sorting system according to claim 1, characterized in that: The first fine crushing and screening module comprises a first scraper conveyor (3), a first hammer mill (4) and a first linear screen (5) which are arranged in sequence; the second fine crushing and screening module comprises a second scraper conveyor (6), a second hammer mill (7), a first cyclone separator (8) and a second linear screen (9) which are arranged in sequence; the third fine crushing and screening module comprises a screw conveyor (10), a grinding mill (11), a second cyclone separator (12), a third linear screen (13) and a third cyclone separator (14) which are arranged in sequence; The first scraper conveyor (3) and the second scraper conveyor (6) have the same structure; the first hammer mill (4) and the second hammer mill (7) have the same structure; the first linear screen (5), the second linear screen (9) and the third linear screen (13) have the same structure; the first cyclone separator (8), the second cyclone separator (12), the third cyclone separator (14) and the third cyclone separator (14) have the same structure.

3. A ferrophosphorus positive electrode sheet crushing and sorting system according to claim 2, characterized in that: The dust collecting assembly comprises a circular screen (15), a dust collector (16) and a fan (17); the negative pressure pipe assembly (18) comprises a negative pressure connecting pipe (181); the dust collector (16) is connected to the coarse crusher (2), the first linear screen (5), the first cyclone separator (8), the second linear screen (9), the second cyclone separator (12), the third linear screen (13) and the third cyclone separator (14) through the negative pressure connecting pipe (181); the circular screen (15) is arranged at the bottom of the third cyclone separator (14); and the dust collector (16) absorbs and screens the pole piece floating material generated by the coarse crusher (2), the first linear screen (5), the first cyclone separator (8), the second linear screen (9), the second cyclone separator (12), the third linear screen (13) and the third cyclone separator (14) in cooperation with the fan (17).

4. A ferrophosphorus positive electrode sheet crushing and sorting system according to claim 3, characterized in that: The dust collector (16) comprises a discharge box (161), a discharge valve, a plurality of filter elements (163) and a motor (164); the discharge valve is arranged at the bottom of the discharge box (161); a working box (162) is arranged at the top of the discharge box (161); the interior of the working box (162) is communicated with the interior of the discharge box (161); and the plurality of filter elements (163) are suspended in a vertical direction inside the working box (162); The working box (162) is provided with an air exhaust port and a fan port on two opposite sides. The air exhaust port is connected to the negative pressure connecting pipe (181), an air duct (165) is provided between the fan port and the fan (17), an output end of the motor (164) is connected to the fan (17), and a chimney for accommodating the fan (17) is also provided outside the fan (17), and the chimney is connected to the air duct (165).

5. A ferrophosphorus positive electrode sheet crushing and sorting system according to claim 4, characterized in that: The first scraper conveyor (3) comprises a conveying box (31), a first driving member (32) and a circular scraper chain (33); The circular scraper chain (33) is movably arranged on the side wall inside the conveying box (31), and a plurality of scrapers (331) are arranged at intervals inside the circular scraper chain (33). The first driving member (32) drives the circular scraper chain (33) to perform a rotary motion on the side wall inside the conveying box (31), thereby linking the scrapers (331) to convey the small pieces of ferrophosphorus positive electrode sheet to the first hammer mill (4).

6. A ferrophosphorus positive electrode sheet crushing and sorting system according to claim 5, characterized in that: The first hammer mill (4) comprises a hammer mill box (41), a second driving member (42), a filter screen (44) and a hammer blade assembly; The hammer blade assembly is located in the hammer mill box (41), and the filter screen (44) is arranged around the hammer blade assembly. The hammer blade assembly rotates under the drive of the second driving member (42) to hammer the small pieces of ferrophosphorus positive electrode sheet material into first electrode sheet fragments, and the first electrode sheet fragments are filtered out through the filter screen (44).

7. A ferrophosphorus positive electrode sheet crushing and sorting system according to claim 6, characterized in that: The first linear screen machine (5) comprises a mounting platform (51), a third driving member (52), a screen box (53) and a linear screen assembly; The screen box (53) is elastically arranged on the top of the mounting platform (51), and the linear screen assembly is located in the screen box (53). The third driving member (52) is arranged at the bottom of the screen box (53), and the third driving member (52) drives the screen box (53) to vibrate, thereby driving the linear screen assembly to vibrate, and the linear screen assembly screens the first pole piece fragments to separate the black material and the second pole piece fragments.

8. A ferrophosphorus positive electrode sheet crushing and sorting system according to claim 7, characterized in that: The first cyclone separator (8) comprises a conical box (81), a fourth driving member (82) and a rotary blade (83); The conical box (81) has a first end and a second end opposite to each other, the inner diameter of the second end being smaller than the inner diameter of the The first end has an inner diameter, the rotary blade (83) is arranged inside the second end, and the rotary blade (83) is connected to the output end of the fourth driving member (82). The rotary blade (83) is driven by the fourth driving member (82) to rotate so as to centrifugally screen the second pole piece fragments ground by the first hammer mill (4).

9. A ferrophosphorus positive electrode sheet crushing and sorting system according to claim 8, characterized in that: The grinding machine (11) comprises a grinding box (111), a fifth driving member (112) and a knife disc (113); The blade disc (113) is disposed in the powder grinding box (111) and is coupled to the fifth driving member (112). The cutter disc (113) is driven by the fifth driving member (112) to rotate and grind the pole piece fragments conveyed by the screw conveyor (10).

10. A ferrophosphorus positive electrode sheet crushing and sorting system according to any one of claims 3 to 9, characterized in that: The circular screen machine (15) comprises a circular screen box (151), a sixth driving member (152) and a second screen (154); A circular box (153) is elastically provided on the top of the circular screen box (151), and the second screen (154) is The circular box (153) is placed in the circular box (153), and the screen is parallel to the bottom of the circular box (153). The sixth driving member (152) is arranged in the circular box (153), and the output end of the sixth driving member (152) is connected to the outer bottom of the circular box (153). The circular box (153) is vibrated under the drive of the sixth driving member (152), thereby driving the second screen (154) to vibrate, so as to screen out the aluminum particles and the pole piece fragments from the pole piece fragments falling from the third cyclone separator (14).

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