Graphite powder screening machine for lithium battery

Abstract

The utility model provides a graphite powder screening machine for a lithium battery, and belongs to the technical field of graphite powder screening. The graphite powder screening machine for the lithium battery comprises a screening box and a base, a box door is arranged on the front side of the screening box, a screening mechanism comprises limiting rods, a first filter screen and a second filter screen, the limiting rods are fixedly installed on the left side and the right side of the inner wall of the screening box, and the first filter screen is slidably installed on the surfaces of the limiting rods. By arranging the screening mechanism, a worker pours graphite powder through the feeding port in the top of the screening box, overlarge graphite powder particles are intercepted at the top of the first filter screen through filtering of the first filter screen, oversmall graphite powder particles pass through the second filter screen, and graphite powder particles meeting the specification are intercepted at the top of the second filter screen; and after screening is finished, the box door is opened, and the graphite powder particles meeting the specification are taken out, so that the problem that only oversized graphite powder particles are screened in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite powder screening, in particular to a graphite powder screening machine for lithium batteries. Background Art

[0002] Graphite powder is a mineral powder whose main component is carbon. It is soft, black-gray and greasy. It is one of the important positive electrode materials for lithium-ion batteries. The particle size and morphology of graphite powder have a significant impact on the cycle performance of lithium-ion batteries. The smaller the graphite powder particles, the larger its surface area, which can enhance the charge and discharge reaction speed of the battery and improve the cycle performance of the battery.

[0003] The prior art usually filters graphite powder through a filter to remove oversized graphite powder particles. However, in the composition of lithium batteries, the specifications of graphite powder are not the smaller the better. Too small particles may increase the resistance inside the battery and affect the performance of the battery. In addition, since graphite powder is powdery particles, the filter holes of the filter are very small and are easily clogged. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a graphite powder screening machine for lithium batteries that overcomes the above technical problems or at least partially solves the above problems.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a graphite powder screening machine for lithium batteries, comprising a screening box and a base, wherein a box door is arranged on the front side of the screening box.

[0007] A screening mechanism, the screening mechanism comprising:

[0008] Limit rods, which are fixedly mounted on the left and right sides of the inner wall of the screening box;

[0009] a first filter screen, the first filter screen being slidably mounted on the surface of the limiting rod;

[0010] a second filter screen, the second filter screen being slidably mounted on the surface of the limiting rod, and the filter holes of the second filter screen being smaller than the filter holes of the first filter screen;

[0011] The sliding mechanism is arranged on the top of the base.

[0012] In a preferred embodiment, the sliding mechanism comprises:

[0013] Support rods, four of which are fixedly mounted on the bottom of the screening box;

[0014] A slide plate is slidably mounted on the top of the base, and the top of the slide plate is fixedly connected to the bottom of the support rod.

[0015] In a preferred solution, a connecting rod is fixedly installed between the first filter screen and the second filter screen, the bottom of the connecting rod penetrates to the bottom of the screening box, and a lifting plate is fixedly installed on the bottom of the connecting rod.

[0016] In a preferred solution, two limiting grooves are formed on the top of the base, and limiting plates are slidably installed inside the two limiting grooves, and the top of the limiting plate is fixedly connected to the bottom of the slide plate.

[0017] In a preferred embodiment, a roller is rotatably mounted on the bottom of the limiting plate, the bottom of the roller contacts the inner wall of the limiting groove, a rotating rod is rotatably mounted on the rear side of the inner wall of the base, and an eccentric wheel is fixedly mounted on the surface of the rotating rod.

[0018] In a preferred solution, a transmission rod is fixedly mounted on one side opposite to the two support rods, a transmission frame is fixedly mounted between the two transmission rods, and a transmission groove is provided on the front side of the transmission frame.

[0019] In a preferred solution, a rotating disk is fixedly installed on the front side of the rotating rod, a rotating shaft is fixedly installed on the front side of the rotating disk, and the rotating shaft is sleeved inside the transmission groove.

[0020] In a preferred solution, a motor is fixedly mounted on the rear side of the base, and an output end of the motor is fixedly connected to the rear side of the rotating rod.

[0021] The utility model provides a graphite powder screening machine for lithium batteries, and its beneficial effects include:

[0022] 1. By setting up a screening mechanism, the staff pours graphite powder through the feed port on the top of the screening box. Through the filtration of the first filter, the oversized graphite powder particles are intercepted at the top of the first filter, and the undersized graphite powder particles pass through the second filter. The graphite powder particles that meet the specifications are intercepted at the top of the second filter. After the screening is completed, the box door is opened to take out the graphite powder particles that meet the specifications, thereby solving the problem that the prior art usually only screens out oversized graphite powder particles.

[0023] 2. By setting up a sliding mechanism, start the motor to drive the rotating rod and the eccentric wheel to rotate. Through the extrusion contact between the eccentric wheel and the lifting plate, the lifting plate is reciprocated up and down. At the same time, the rotating rod drives the turntable and the rotating shaft to rotate, so that the rotating shaft squeezes the inner wall of the transmission groove, and the transmission frame drives the support rod and the screening box to reciprocate in the horizontal direction through the transmission rod, so that the graphite powder on the first filter screen and the second filter screen moves irregularly to avoid clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure provided by the implementation method of the utility model;

[0026] Figure 2 A partial cross-sectional view of the door and the base is provided for the embodiment of the utility model;

[0027] Figure 3 A partial cross-sectional view of a base is provided for an embodiment of the utility model;

[0028] Figure 4 A schematic diagram of the structure of the rear view is provided for an embodiment of the utility model;

[0029] Figure 5 Provided for the implementation of the utility model Figure 3 A partial enlarged view of point A in the middle.

[0030] In the figure: 1. screening box; 2. base; 3. box door; 4. limit rod; 5. first filter; 6. second filter; 7. support rod; 8. slide plate; 9. connecting rod; 10. lifting plate; 11. limit groove; 12. limit plate; 13. roller; 14. rotating rod; 15. eccentric wheel; 16. transmission rod; 17. transmission frame; 18. transmission groove; 19. turntable; 20. rotating shaft; 21. motor. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Example

[0033] Reference Figure 1-5The utility model provides a technical solution: a graphite powder screening machine for lithium batteries, comprising a screening box 1 and a base 2, a box door 3 is arranged on the front side of the screening box 1, a screening mechanism comprises a limit rod 4, a first filter screen 5 and a second filter screen 6, the limit rod 4 is fixedly mounted on the left and right sides of the inner wall of the screening box 1, the first filter screen 5 is slidably mounted on the surface of the limit rod 4, the second filter screen 6 is slidably mounted on the surface of the limit rod 4, and the filter hole of the second filter screen 6 is smaller than the filter hole of the first filter screen 5, the sliding mechanism is arranged on the top of the base 2, a connecting rod 9 is fixedly mounted between the first filter screen 5 and the second filter screen 6, the bottom of the connecting rod 9 passes through the bottom of the screening box 1, and a lifting plate 10 is fixedly mounted on the bottom of the connecting rod 9, by setting A screening mechanism is provided, and the staff pours graphite powder into the screening box 1 through the feed port at the top of the screening box 1. The oversized graphite powder particles are intercepted at the top of the first filter screen 5 through the filtration of the first filter screen 5. Since the second filter screen 6 is located at the lower side of the first filter screen 5, and the filter holes of the second filter screen 6 are smaller than the filter holes of the first filter screen 5, after the graphite powder particles passing through the first filter screen 5 fall onto the second filter screen 6, the oversized graphite powder particles pass through the second filter screen 6, and the graphite powder particles that meet the specifications are intercepted at the top of the second filter screen 6. After the screening is completed, the box door 3 is opened, the graphite powder particles that meet the specifications are taken out, and the graphite powder particles that do not meet the specifications are recycled, thereby solving the problem that the prior art usually only screens out oversized graphite powder particles;

[0034] Reference Figure 1-5The sliding mechanism includes a support rod 7 and a slide plate 8. The support rod 7 is fixedly installed at the bottom of the screening box 1, and four of them are provided. The slide plate 8 is slidably installed on the top of the base 2. The top of the slide plate 8 is fixedly connected to the bottom of the support rod 7. Two limiting grooves 11 are provided on the top of the base 2. The limiting plates 12 are slidably installed inside the two limiting grooves 11. The top of the limiting plate 12 is fixedly connected to the bottom of the slide plate 8. A roller 13 is rotatably installed at the bottom of the limiting plate 12. The bottom of the roller 13 contacts the inner wall of the limiting groove 11. A rotating rod 14 is rotatably installed on the rear side of the inner wall of the base 2. An eccentric wheel 15 is fixedly installed on the surface of the rotating rod 14. Transmission rods 16 are fixedly installed on the opposite sides of the two support rods 7. A transmission frame 17 is fixedly installed between the two transmission rods 16. A transmission frame 17 is provided on the front side of the transmission frame 17. Slot 18, a turntable 19 is fixedly installed on the front side of the turntable 19, a rotating shaft 20 is fixedly installed on the front side of the turntable 19, and the rotating shaft 20 is sleeved inside the transmission slot 18. A motor 21 is fixedly installed on the rear side of the base 2, and the output end of the motor 21 is fixedly connected to the rear side of the turntable 14. By setting a sliding mechanism, the motor 21 is started to drive the turntable 14 and the eccentric wheel 15 to rotate. Through the extrusion contact between the eccentric wheel 15 and the lifting plate 10, the lifting plate 10 is reciprocated up and down. At the same time, the turntable 19 and the rotating shaft 20 are driven by the turntable 19 and the rotating shaft 20 to rotate, so that the rotating shaft 20 squeezes the inner wall of the transmission slot 18, so that the transmission frame 17 drives the support rod 7 and the screening box 1 to reciprocate in the horizontal direction through the transmission rod 16, so that the graphite powder on the first filter screen 5 and the second filter screen 6 moves irregularly to avoid clogging.

[0035] It is worth noting that the lifting plate 10 and the turntable 19 are staggered in the vertical direction to prevent the lifting plate 10 from hitting the turntable 19 during the lifting process.

[0036] Specifically, the working process or working principle of the graphite powder screening machine for lithium batteries is as follows: when in use, the staff pours graphite powder through the feed port on the top of the screening box 1, starts the motor 21, drives the rotating rod 14 and the eccentric wheel 15 to rotate, and the eccentric wheel 15 is pressed and contacted with the lifting plate 10, so that the lifting plate 10 is reciprocatedly raised and lowered, and at the same time, the rotating rod 14 drives the rotating disk 19 and the rotating shaft 20 to rotate, so that the rotating shaft 20 squeezes the inner wall of the transmission groove 18, so that the transmission frame 17 drives the support rod 7 and the screening box 1 in the horizontal direction through the transmission rod 16. The reciprocating motion of the filter screen 5 intercepts the oversized graphite powder particles at the top of the first filter screen 5 through the filtration of the first filter screen 5. Since the second filter screen 6 is located at the lower side of the first filter screen 5 and the filter holes of the second filter screen 6 are smaller than the filter holes of the first filter screen 5, the graphite powder particles passing through the first filter screen 5 fall onto the second filter screen 6, and the oversized graphite powder particles pass through the second filter screen 6. The graphite powder particles that meet the specifications are intercepted at the top of the second filter screen 6. After the screening is completed, the box door 3 is opened, the graphite powder particles that meet the specifications are taken out, and the graphite powder particles that do not meet the specifications are recycled.

[0037] It should be noted that the motor 21 is a device or equipment existing in the prior art, or a device or equipment that can be realized in the prior art. Its power supply, specific composition and principle are clear to those skilled in the art, so they are not described in detail.

Claims

1. A graphite powder screening machine for lithium batteries, comprising a screening box (1) and a base (2), wherein a box door (3) is provided on the front side of the screening box (1), characterized in that: A screening mechanism, the screening mechanism comprising: A limit rod (4), wherein the limit rod (4) is fixedly mounted on the left and right sides of the inner wall of the screening box (1); A first filter screen (5), the first filter screen (5) being slidably mounted on the surface of the limiting rod (4); A second filter screen (6), the second filter screen (6) is slidably mounted on the surface of the limiting rod (4), and the filter holes of the second filter screen (6) are smaller than the filter holes of the first filter screen (5); A sliding mechanism is arranged on the top of the base (2).

2. The graphite powder screening machine for lithium batteries according to claim 1, characterized in that: The sliding mechanism comprises: Support rods (7), wherein four support rods (7) are fixedly mounted on the bottom of the screening box (1); A slide plate (8), wherein the slide plate (8) is slidably mounted on the top of the base (2), and the top of the slide plate (8) is fixedly connected to the bottom of the support rod (7).

3. The graphite powder screening machine for lithium batteries according to claim 2, characterized in that: A connecting rod (9) is fixedly installed between the first filter screen (5) and the second filter screen (6), the bottom of the connecting rod (9) penetrates the bottom of the screening box (1), and a lifting plate (10) is fixedly installed at the bottom of the connecting rod (9).

4. The graphite powder screening machine for lithium batteries according to claim 2, characterized in that: Two limiting grooves (11) are provided on the top of the base (2), and limiting plates (12) are slidably mounted inside the two limiting grooves (11), and the top of the limiting plate (12) is fixedly connected to the bottom of the slide plate (8).

5. The graphite powder screening machine for lithium batteries according to claim 4, characterized in that: A roller (13) is rotatably mounted on the bottom of the limiting plate (12), the bottom of the roller (13) is in contact with the inner wall of the limiting groove (11), a rotating rod (14) is rotatably mounted on the rear side of the inner wall of the base (2), and an eccentric wheel (15) is fixedly mounted on the surface of the rotating rod (14).

6. The graphite powder screening machine for lithium batteries according to claim 5, characterized in that: A transmission rod (16) is fixedly mounted on one side opposite to the two support rods (7), a transmission frame (17) is fixedly mounted between the two transmission rods (16), and a transmission groove (18) is provided on the front side of the transmission frame (17).

7. The graphite powder screening machine for lithium batteries according to claim 6, characterized in that: A rotating disk (19) is fixedly mounted on the front side of the rotating rod (14), a rotating shaft (20) is fixedly mounted on the front side of the rotating disk (19), and the rotating shaft (20) is sleeved inside the transmission groove (18).

8. The graphite powder screening machine for lithium batteries according to claim 5, characterized in that: A motor (21) is fixedly mounted on the rear side of the base (2), and an output end of the motor (21) is fixedly connected to the rear side of the rotating rod (14).

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