Graphite negative electrode material production using a pulverizing device

Abstract

The utility model belongs to graphite negative material manufacturing technology field especially uses the crushing device for graphite negative material, including work box and two crushing rollers in work box, the crushing roller has the crushing surface and the knocking surface, be provided with the mobile mechanism for driving crushing roller in work box, be provided with the filter screen in work box and the screening discharge mechanism for driving filter screen, work box surface is provided with the discharge gate with filter screen is in the same horizontal position, the utility model discloses mobile mechanism can drive two crushing rollers' knocking surface is in the opposite state, drives two crushing rollers to move to the direction of mutual approach again and knocks the material to break, mobile mechanism can also let two crushing rollers' crushing surface be in the opposite state, drives two crushing rollers to reciprocating rotation, and the material after knocking breaks again is crushed.

Description

Technical Field

[0001] This invention relates to the field of graphite anode material manufacturing technology, and in particular to a pulverizing device for manufacturing graphite anode materials. Background Technology

[0002] Graphite anode material refers to graphite-based carbon materials that serve as the active material in the negative electrode (often also called the anode) of lithium-ion batteries. During battery charging, it receives and stores lithium ions migrating from the positive electrode material; during discharging, it releases the lithium ions back. It is currently the most mainstream and widely used anode material in commercially available lithium-ion batteries.

[0003] The preparation of graphite anode materials is a typical multi-stage crushing and classification process. The coarse and medium crushing into small pieces is an essential pretreatment step. Its purpose is to provide suitable and efficient feeding conditions for the subsequent core fine crushing and classification process, and ultimately to accurately control the particle size distribution and particle morphology of the product to meet the stringent requirements of high-performance lithium-ion batteries.

[0004] However, traditional crushing devices often lack the ability to pre-crush graphite anode materials, requiring additional equipment to crush them into smaller pieces for subsequent crushing. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes a pulverizing device for manufacturing graphite anode materials, which more accurately solves the problems mentioned in the background art.

[0006] This invention is achieved through the following technical solution: A pulverizing device for producing graphite anode materials includes a working box and two pulverizing rollers located inside the working box. The pulverizing rollers have a pulverizing surface and a striking surface. The working box is provided with a movable mechanism for driving the pulverizing rollers. The working box is provided with a filter screen and a screening and discharging mechanism for driving the filter screen. The surface of the working box has a discharge port at the same level as the filter screen.

[0007] Preferably, the movable mechanism includes two rectangular plates fixed on opposite sides of the inner wall of the work box, with V-plates fixedly connected to the free ends of the two rectangular plates, and bearing rods vertically fixed to both ends of each V-plate. Hollow shafts are rotatably connected to the four bearing rods, and worm gears are sleeved on each hollow shaft.

[0008] Preferably, each hollow shaft is fitted with an annular sleeve, each annular sleeve has an annular plate integrally fixed on its surface, each annular sleeve has an annular component rotatably connected to it, and each annular component and its corresponding rectangular plate are fixedly connected by an L-shaped rod.

[0009] Preferably, two crossbars are fixedly connected to the surface of the annular plate, and a worm wheel that meshes with a worm gear is rotatably connected between the two crossbars. A reciprocating threaded rod that is coaxially fixed to the outside of the crossbar is provided. A vertical rod that is parallel to the reciprocating threaded rod is vertically fixed to the surface of one of the crossbars. The same sleeve is fitted on the vertical rod and the reciprocating threaded rod. One end of the sleeve is fixed to the corresponding crushing roller. A slider that matches the groove on the surface of the reciprocating threaded rod is rotatably connected inside the hollow shaft.

[0010] Preferably, an internal gear ring is fixedly connected inside the annular sleeve, a gear is sleeved on the surface of the hollow shaft, the gear is located inside the internal gear ring, and a double-sided gear ring is provided between the gear and the internal gear ring, the double-sided gear ring meshing with the internal gear ring and the gear.

[0011] Preferably, a limiting shell is fixedly connected to the free end of each of the bearing rods. The limiting shell has an annular groove and a straight groove communicating with the annular groove on its surface. A placement groove is formed on the side wall of the straight groove. A spring rod is fixedly connected in the placement groove. A limiting block extending to the outside of the placement groove is fixedly connected to the free end of the spring rod. The side of the limiting block away from the straight groove is an inclined surface.

[0012] Preferably, each of the limiting housings is provided with a threaded rod II rotatably connected to the inner side wall of the working box and driven by an external motor. The threaded rod II is fitted with an internal threaded sleeve that is threadedly connected to it and located inside the limiting housing. A bending rod is fixedly connected between the internal threaded sleeve and the double-sided gear ring. The bending rod is slidably adapted to the annular groove and the straight groove.

[0013] Preferably, the screening and discharge mechanism includes sliding columns fixed at the four corners of the filter screen, and strip grooves for sliding columns to slide on the opposite side walls of the working box, as well as arc grooves that are interconnected with the strip grooves and adapted to slide with the sliding columns. Each sliding column surface is fitted with two baffles, and the two baffles are located on the inner and outer sides of the working box and fit against the working box.

[0014] Preferably, the two sliding columns near the discharge port have a locking block integrally fixed at one end on the outside of the working box. A U-shaped seat is fixedly connected to the outer surface of the working box, and a round shaft is rotatably connected to the U-shaped seat. The round shaft has a groove that matches the locking block.

[0015] Preferably, a pulley is sleeved on the round shaft, and a pulley is fixed coaxially with the threaded rod on the outside of the work box. A belt is connected between the pulley and the pulley. Side plates are fixedly connected to opposite sides of the work box. An electric telescopic rod is fixedly installed on the side plate. An arc-shaped plate is fixedly connected to the free end of the electric telescopic rod. The ends of two sliding columns near the arc-shaped groove are placed in the corresponding arc-shaped plates.

[0016] Compared with the prior art, the present invention provides a pulverizing device for manufacturing graphite anode materials, which has the following beneficial effects: The moving mechanism can drive the striking surfaces of the two crushing rollers to be in a relative state, and then drive the two crushing rollers to move closer to each other to crush the material; The moving mechanism can also keep the crushing surfaces of the two crushing rollers in a relative position, driving the two crushing rollers to rotate back and forth, and further crushing the broken material.

[0017] The screening and discharge mechanism can drive the horizontal filter screen to sway left and right, which can speed up the screening efficiency. It can also drive the filter screen to rotate into an inclined state, so that the screened and unqualified materials can be sent out of the working box through the discharge port for secondary crushing. This structure allows for more thorough screening compared to simply setting the filter screen to an inclined shape, preventing even properly crushed materials from coming out of the outlet. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a pulverizing device for manufacturing graphite anode materials proposed in this invention; Figure 2 This is a structural diagram showing the location of the filter screen in this invention; Figure 3 This is a structural diagram showing the location of the rectangular plate in this invention; Figure 4 This is a schematic diagram of the hollow shaft and the bearing rod after disassembly in this invention; Figure 5 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 6 For the present invention Figure 3 Enlarged structural diagram at point B; Figure 7 This is a structural diagram showing the location of the double-sided gear ring in this invention; Figure 8 This is a schematic diagram of the structure of the crushing roller in the present invention with the striking surface in a vertical position. Figure 1 ; Figure 9 This is a schematic diagram of the structure of the crushing roller in the present invention with the striking surface in a vertical position. Figure 2 ; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point C; Figure 11 This is a schematic diagram of the structure at the location of the discharge port in this invention; Figure 12 For the present invention Figure 11 Enlarged structural diagram at point D; Figure 13 For the present invention Figure 11 A magnified structural diagram at point E in the middle.

[0019] In the diagram: 1. Working box; 2. Crushing roller; 21. Crushing surface; 22. Impacting surface; 3. Filter screen; 4. Discharge port; 51. Rectangular plate; 52. V-shaped plate; 53. Bearing rod; 54. Hollow shaft; 55. Worm gear; 56. Annular sleeve; 57. Annular plate; 58. Annular component; 59. L-shaped rod; 510. Crossbar; 511. Worm wheel; 512. Reciprocating threaded rod; 513. Vertical rod; 514. Sleeve rod; 515. Internal gear ring; 516. Gear; 517. Double-sided gear ring; 518. Limiting shell; 519. Annular groove; 520. Straight groove; 5 21. Placement slot; 522. Spring rod; 523. Restriction block; 524. Threaded rod II; 525. Internal threaded sleeve; 526. Bending rod; 61. Sliding column; 62. Strip groove; 63. Arc groove; 64. Baffle; 65. Locking block; 66. U-shaped seat; 67. Round shaft; 68. Belt pulley I; 69. Belt pulley II; 610. Belt; 611. Side plate; 612. Electric telescopic rod; 613. Arc plate. Detailed Implementation

[0020] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings. Example

[0021] like Figures 1-8 As shown, an embodiment of the present invention provides a pulverizing device for producing graphite anode materials, including a working box 1 and two pulverizing rollers 2 located inside the working box 1. The pulverizing rollers 2 have a pulverizing surface 21 and a striking surface 22. The working box 1 is provided with a movable mechanism for driving the pulverizing rollers 2. The working box 1 is provided with a filter screen 3 and a screening and discharging mechanism for driving the filter screen 3. The surface of the working box 1 is provided with a discharge port 4 at the same horizontal position as the filter screen 3.

[0022] Among them, the crushing surface 21 of the crushing roller 2 is used to crush the material, and the striking surface 22 is used to break the material.

[0023] The active mechanism can drive the striking surfaces 22 of the two crushing rollers 2 to be in a relative state, and then drive the two crushing rollers 2 to move closer to each other to crush the material. The moving mechanism can also keep the crushing surfaces 21 of the two crushing rollers 2 in a relative state, drive the two crushing rollers 2 to rotate back and forth, and crush the crushed material again.

[0024] The screening and discharge mechanism can drive the horizontal filter screen 3 to sway left and right, which can speed up the screening efficiency. It can also drive the filter screen 3 to rotate into an inclined state, so that the screened and crushed unqualified materials can be sent out of the working box 1 through the discharge port 4 for secondary crushing. This structure allows for more thorough screening compared to simply setting the filter screen 3 to an inclined shape, preventing qualified materials from also coming out of the discharge port 4.

[0025] The movable mechanism includes two rectangular plates 51 fixed on opposite sides of the inner wall of the work box 1. The free ends of the two rectangular plates 51 are fixedly connected to V-plates 52. Each V-plate 52 has a bearing rod 53 vertically fixed at both ends. Each of the four bearing rods 53 is fitted with a hollow shaft 54 ​​that is rotatably connected to it. Each hollow shaft 54 ​​is fitted with a worm gear 55.

[0026] Each hollow shaft 54 ​​is fitted with an annular sleeve 56, and an annular plate 57 is integrally fixed on the surface of each annular sleeve 56. Each annular sleeve 56 is fitted with an annular component 58 that is rotatably connected to it, and an L-rod 59 is fixedly connected between each annular component 58 and its corresponding rectangular plate 51.

[0027] Among them, the annular sleeve 56 and the annular plate 57 can rotate within the annular component 58 without affecting the hollow shaft 54.

[0028] Two crossbars 510 are fixedly connected to the surface of the annular plate 57. A worm gear 511 that meshes with the worm 55 is rotatably connected between the two crossbars 510. A reciprocating threaded rod 512 that is coaxially fixed with the worm gear 511 is provided on the outer side of the crossbars 510. A vertical rod 513 that is parallel to the reciprocating threaded rod 512 is vertically fixed to the surface of one of the crossbars 510. The same sleeve rod 514 is sleeved on the vertical rod 513 and the reciprocating threaded rod 512. One end of the sleeve rod 514 is fixed to the corresponding crushing roller 2. A slider that is adapted to the groove on the surface of the reciprocating threaded rod 512 is rotatably connected inside the hollow shaft 54.

[0029] When the worm 55 rotates, it can drive the worm wheel 511 that meshes with it to rotate as well. The worm wheel 511 can drive the reciprocating threaded rod 512 to rotate as well. The reciprocating threaded rod 512 can drive the crushing roller 2 to move back and forth through the sleeve rod 514.

[0030] An internal gear ring 515 is fixedly connected inside the annular sleeve 56. A gear 516 is sleeved on the surface of the hollow shaft 54. The gear 516 is located inside the internal gear ring 515. A double-sided gear ring 517 is provided between the gear 516 and the internal gear ring 515. The double-sided gear ring 517 meshes and matches with the internal gear ring 515 and the gear 516.

[0031] Among them, the length of gear 516 is greater than that of double-sided gear ring 517 and internal gear ring 515. When double-sided gear ring 517 is located between internal gear ring 515 and gear 516 and is in mesh with both internal gear ring 515 and gear 516, the rotation of double-sided gear ring 517 can drive internal gear ring 515 and gear 516 to rotate together. When the double-sided gear ring 517 disengages from the internal gear ring 515 and meshes only with the gear 516, the rotation of the double-sided gear ring 517 can only drive the gear 516.

[0032] Each of the bearing rods 53 has a fixedly connected limiting shell 518 at its free end. The limiting shell 518 has an annular groove 519 and a straight groove 520 communicating with the annular groove 519. The straight groove 520 has a placement groove 521 on its side wall. A spring rod 522 is fixedly connected in the placement groove 521. The free end of the spring rod 522 is fixedly connected to a limiting block 523 extending to the outside of the placement groove 521. The side of the limiting block 523 away from the straight groove 520 is an inclined surface.

[0033] Each of the limiting housings 518 is provided with a threaded rod 524 rotatably connected to the inner side wall of the working box 1 and driven by an external motor. The threaded rod 524 is fitted with an internal threaded sleeve 525 that is threadedly connected to it and located inside the limiting housing 518. A bending rod 526 is fixedly connected between the internal threaded sleeve 525 and the double-sided gear ring 517. The bending rod 526 is slidably adapted to the annular groove 519 and the straight groove 520.

[0034] The screening and discharge mechanism includes sliding columns 61 fixed at the four corners of the filter screen 3. The working box 1 has strip grooves 62 on its opposite side walls for sliding columns 61 to slide, and arc grooves 63 that are connected to the strip grooves 62 and adapted to slide with the sliding columns 61.

[0035] Each sliding column 61 has two baffles 64 fitted onto its surface. The two baffles 64 are located on the inner and outer sides of the working box 1 and are in contact with the working box 1.

[0036] The two baffles 64 on the sliding column 61 are provided to prevent the sliding column 61 from disengaging from the strip groove 62.

[0037] Two sliding columns 61 near the discharge port 4 have a locking block 65 fixedly attached to one end of the column located on the outside of the working box 1. A U-shaped seat 66 is fixedly connected to the outer surface of the working box 1. A round shaft 67 is rotatably connected to the U-shaped seat 66. A groove adapted to the locking block 65 is provided on the round shaft 67.

[0038] When the locking block 65 moves along the strip groove 62 with the sliding column 61 into the groove of the round shaft 67, the round shaft 67 can drive the sliding column 61 to rotate through the locking block 65.

[0039] A pulley 68 is sleeved on the round shaft 67, and a pulley 69 is provided on the outside of the working box 1 and is coaxially fixed with the threaded rod 524. A belt 610 is connected between the pulley 68 and the pulley 69.

[0040] The work box 1 is fixedly connected to two opposite sides with side plates 611. An electric telescopic rod 612 is fixedly installed on the side plates 611. An arc plate 613 is fixedly connected to the free end of the electric telescopic rod 612. The ends of two sliding columns 61 near the arc groove 63 are placed in the corresponding arc plate 613.

[0041] Working principle: When the material needs to be crushed, the bending rod 526 is located in the annular groove 519, the double-sided gear ring 517 meshes with the inner gear ring 515 and the gear 516, and the threaded rod 524 is driven to reciprocate through an external motor. The threaded rod 524 can drive the inner threaded sleeve 525 to reciprocate. The inner threaded sleeve 525 can drive the double-sided gear ring 517 to reciprocate through the bending rod 526. The double-sided gear ring 517 can drive the annular sleeve 56 and the annular plate 57 to rotate through the inner gear ring 515 it meshes with. The crossbar 510, worm gear 511, reciprocating threaded rod 512, sleeve rod 514, upright rod 513, and crushing roller 2 all reciprocate. When the two crushing rollers 2 rotate back and forth, their crushing surfaces 21 approach each other, and the crushing surfaces 21 are used to crush the material. At the same time, the double-sided gear ring 517 can also drive the gear 516 meshing with it to rotate, and the gear 516 can drive the worm 55 to rotate through the hollow shaft 54, so that the worm 55 and the worm wheel 511 can maintain a relatively stationary state. When it is necessary to crush materials, drive the bending rod 526 to rotate towards the side closer to the straight groove 520. When it rotates to the connection between the straight groove 520 and the annular groove 519, the striking surface 22 of the crushing roller 2 is in a vertical state, and the striking surfaces 22 of the two crushing rollers 2 are in a relative state. Then, the rotation of the threaded rod 524 can drive the inner threaded sleeve 525, the bending rod 526 and the double-sided toothed ring 517 to move along the straight groove 520 to the outside of the limiting shell 518. When the bending rod 526 disengages from the straight groove 520, the double-sided toothed ring 517 also disengages from the inner toothed ring 515. At this time, the threaded rod 524 continues to drive the internal threaded sleeve 525, the bending rod 526 and the double-sided gear ring 517 to rotate. The bending rod 526 will repeatedly push the inclined surface of the limiting block 523, causing the limiting block 523 to move into the placement groove 521. Thus, the limiting block 523 will not hinder the rotation of the bending rod 526. The bending rod 526 drives the gear 516 to rotate through the double-sided gear ring 517. The gear 516 drives the worm 55 to rotate through the hollow shaft 54. The worm 55 can drive the worm wheel 511 that meshes with it to rotate. The worm wheel 511 can drive the reciprocating threaded rod 512 to rotate. The reciprocating threaded rod 512 can drive the crushing roller 2 to move back and forth through the sleeve rod 514. When the striking surfaces 22 of the two crushing rollers 2 move to the side that is closer to each other, they can crush large pieces of material first, so as to facilitate the subsequent crushing work.

[0042] When the filter screen 3 needs to perform screening, the electric telescopic rod 612 drives the arc plate 613 to move back and forth in the horizontal direction. The arc plate 613 can drive the corresponding sliding column 61 to move back and forth in the horizontal direction. The sliding column 61 can drive the filter screen 3 to shake in the horizontal direction, thereby making the filter screen 3 speed up the screening efficiency of materials. When the four sliding pins 61 reciprocate along the strip groove 62, their range of movement must ensure that the locking block 65 does not enter the groove of the round shaft 67. When it is necessary to send the unqualified material screened on the filter screen 3 out of the working box 1, the round shaft 67 should first be kept at rest and the groove on the round shaft 67 should be in a horizontal state before the card block 65 can be driven to enter the groove of the round shaft 67 along the strip groove 62. Meanwhile, the other two sliding columns 61 are located at the connection between the strip groove 62 and the arc groove 63. When the threaded rod 524 is driven by an external motor, it can drive the pulley 69 to rotate. The pulley 69 can drive the pulley 68 and the round shaft 67 to rotate through the belt 610. The round shaft 67 can drive the sliding column 61 to rotate through the clamp 65. The sliding column 61 can drive the filter screen 3 to rotate and tilt, so that the unqualified material on the filter screen 3 can slide out from the discharge port 4 for subsequent secondary crushing. At the same time, the other two sliding pillars 61 will slide along the arc groove 63 to allow the filter screen 3 to be in an inclined state.

[0043] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification, and therefore remain within the spirit and scope of the exemplary embodiments of this specification. Furthermore, this specification uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined. Moreover, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods of this specification.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pulverizing device for manufacturing graphite anode materials, characterized in that, It includes a working box (1) and two crushing rollers (2) located inside the working box (1). The crushing rollers (2) have a crushing surface (21) and a striking surface (22). The working box (1) is provided with an active mechanism for driving the crushing rollers (2). The working box (1) is provided with a filter screen (3) and a screening and discharge mechanism for driving the filter screen (3). The surface of the working box (1) is provided with a discharge port (4) at the same horizontal position as the filter screen (3).

2. The pulverizing device for manufacturing graphite anode materials according to claim 1, characterized in that, The movable mechanism includes two rectangular plates (51) fixed on opposite sides of the inner wall of the work box (1). The free ends of the two rectangular plates (51) are fixedly connected to V-plates (52). Each V-plate (52) has a bearing rod (53) vertically fixed at both ends. Each of the four bearing rods (53) is fitted with a hollow shaft (54) that is rotatably connected to it. Each hollow shaft (54) is fitted with a worm gear (55).

3. The pulverizing device for manufacturing graphite anode materials according to claim 2, characterized in that, Each hollow shaft (54) is fitted with an annular sleeve (56), and an annular plate (57) is integrally fixed on the surface of each annular sleeve (56). Each annular sleeve (56) is fitted with an annular component (58) that is rotatably connected to it. Each annular component (58) and its corresponding rectangular plate (51) are fixedly connected by an L rod (59).

4. The pulverizing device for manufacturing graphite anode materials according to claim 3, characterized in that, Two crossbars (510) are fixedly connected to the surface of the annular plate (57). A worm wheel (511) that meshes with the worm (55) is rotatably connected between the two crossbars (510). A reciprocating threaded rod (512) that is coaxially fixed with the worm wheel (511) is provided on the outside of the crossbar (510). A vertical rod (513) that is parallel to the reciprocating threaded rod (512) is vertically fixed to the surface of one of the crossbars (510). The same sleeve rod (514) is fitted on the vertical rod (513) and the reciprocating threaded rod (512). One end of the sleeve rod (514) is fixed to the corresponding crushing roller (2). A slider that is adapted to the groove on the surface of the reciprocating threaded rod (512) is rotatably connected inside the hollow shaft (54).

5. The pulverizing device for manufacturing graphite anode materials according to claim 4, characterized in that, An internal gear ring (515) is fixedly connected inside the annular sleeve (56). A gear (516) is sleeved on the surface of the hollow shaft (54). The gear (516) is located inside the internal gear ring (515). A double-sided gear ring (517) is provided between the gear (516) and the internal gear ring (515). The double-sided gear ring (517) meshes with the internal gear ring (515) and the gear (516).

6. The pulverizing device for manufacturing graphite anode materials according to claim 5, characterized in that, Each of the bearing rods (53) has a fixed connection to a limiting shell (518) at its free end. The limiting shell (518) has an annular groove (519) and a straight groove (520) that communicates with the annular groove (519). The straight groove (520) has a placement groove (521) on its side wall. A spring rod (522) is fixedly connected in the placement groove (521). The free end of the spring rod (522) is fixedly connected to a limiting block (523) that extends to the outside of the placement groove (521). The side of the limiting block (523) away from the straight groove (520) is an inclined surface.

7. The pulverizing device for manufacturing graphite anode materials according to claim 6, characterized in that, Each of the limiting housings (518) is provided with a threaded rod two (524) rotatably connected to the inner side wall of the working box (1) and driven by an external motor. The threaded rod two (524) is fitted with an internal threaded sleeve (525) threadedly connected to it and located inside the limiting housing (518). A bending rod (526) is fixedly connected between the internal threaded sleeve (525) and the double-sided gear ring (517). The bending rod (526) is slidably adapted to the annular groove (519) and the straight groove (520).

8. The pulverizing device for manufacturing graphite anode materials according to claim 7, characterized in that, The screening and discharge mechanism includes sliding columns (61) fixed at the four corners of the filter screen (3). The working box (1) has strip grooves (62) on its opposite side walls for sliding columns (61) to slide, and arc grooves (63) that are connected to the strip grooves (62) and adapted to slide with the sliding columns (61). Each sliding column (61) has two baffles (64) fitted on its surface. The two baffles (64) are located on the inner and outer sides of the working box (1) and are in contact with the working box (1).

9. A pulverizing device for manufacturing graphite anode materials according to claim 8, characterized in that, Two sliding columns (61) near the discharge port (4) are integrated with a locking block (65) at one end of the working box (1) on the outside. A U-shaped seat (66) is fixedly connected to the outer surface of the working box (1). A round shaft (67) is rotatably connected to the U-shaped seat (66). A groove that matches the locking block (65) is opened on the round shaft (67).

10. A pulverizing device for manufacturing graphite anode materials according to claim 9, characterized in that, A pulley 1 (68) is sleeved on the round shaft (67). A pulley 2 (69) is provided on the outside of the work box (1) and is fixed coaxially with the threaded rod 2 (524). A belt (610) is connected between the pulley 1 (68) and the pulley 2 (69). Side plates (611) are fixedly connected to the opposite sides of the work box (1). An electric telescopic rod (612) is fixedly installed on the side plate (611). An arc plate (613) is fixedly connected to the free end of the electric telescopic rod (612). The ends of two sliding columns (61) near the arc groove (63) are placed in the corresponding arc plate (613).

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