Biomass hard carbon negative electrode material production screening device

Abstract

The utility model relates to the technical field of automatic screening processing equipment for biomass hard carbon material production, in particular to a biomass hard carbon cathode material production screening device which comprises a hopper, a screening cavity, a feeding mechanism, a screening mechanism and a power mechanism. The hopper is communicated with the material screening cavity, a standard material output port and a waste material output port are formed below the material screening cavity, and the feeding mechanism pushes powdery biomass hard carbon negative electrode materials towards the material screening cavity; the screening mechanism is arranged in the screening cavity and comprises a screen mesh and a screening paddle, the screen mesh is arranged above the standard material output port, the screen mesh on the screening device is improved, so that the screen mesh can reversely rotate relative to the screening paddle, when the screen mesh works, the working parts are switched in real time, and the screening efficiency is improved. And blockage formed after the same part continuously works for a long time is avoided, the number of times of cleaning and maintaining the screen is reduced, and the working time period of the screen is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic screening and processing equipment for the production of biomass hard carbon materials, in particular to a screening device for the production of biomass hard carbon negative electrode materials. Background Art

[0002] The production of biomass hard carbon anode materials is a key technology in the field of lithium-ion batteries and supercapacitors. This material has attracted particular attention in the field of energy storage due to its wide availability, low cost, good cycle stability and environmental friendliness. The process of producing biomass hard carbon usually involves the following steps:

[0003] Raw material selection and pretreatment: Select suitable biomass raw materials, such as wood, rice husks, sugar plants, etc., and process the raw materials into suitable size and shape through preparation processes such as crushing and screening.

[0004] Carbonization: The pretreated biomass is heated to a certain temperature, generally between 400°C and 1000°C, under oxygen-free or low-oxygen conditions. This step removes most of the non-carbon elements in the biomass, leaving the main carbon structure.

[0005] Activation: This is an optional step where the carbonized material is further treated by physical or chemical methods to increase its surface area and porosity. Physical activation usually involves reacting the material with a gas at high temperature, while chemical activation usually uses chemical agents such as strong bases, salts or acids.

[0006] Screening and grading: After the carbonization and activation process, the resulting hard carbon material usually needs to be screened to obtain materials with a specific particle size range to meet the specific needs of battery manufacturing. This step ensures the consistency and performance of the negative electrode material.

[0007] Post-treatment: As needed, hard carbon materials may be further treated, such as removing surface functional groups or compounding with other materials to improve their electrochemical properties.

[0008] However, the existing equipment used for screening hard carbon materials will cause the mesh holes on the screen to be blocked after a period of screening, causing the screen to fail to work properly, so the screen needs to be cleaned and maintained regularly.

[0009] In the patent application number 202322215608.3, a jet mill for carbonization of hard carbon negative electrodes is disclosed, including a cylinder, a screening mechanism, a drainage mechanism and a scraping mechanism. The screening mechanism includes a box body, a filter plate and an exciter are arranged inside the box body, a first feed pipe and a first motor are fixedly connected to the upper end of the box body, a stirring rod is arranged at the lower end of the first motor, a first discharge pipe is fixedly connected to the lower end of the box body, a second feed pipe is fixedly connected to the side of the cylinder body, and a through hole is opened at the upper end of the second feed pipe.

[0010] However, according to the applicant, when the above-mentioned equipment is used for screening hard carbon negative electrode materials, the screen will still be blocked, which requires timely cleaning and maintenance. Utility Model Content

[0011] In view of the above problems, the utility model provides a screening device for the production of biomass hard carbon negative electrode materials. By improving the screen on the screening device, the screen can rotate in the opposite direction to the screening blades, so that when the screen is working, the working part can be switched in real time to avoid blockage of the same part after working for a long time, reduce the number of times the screen is cleaned and maintained, and extend the working time cycle of the screen.

[0012] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0013] A biomass hard carbon negative electrode material production screening device, comprising:

[0014] Hopper, screening chamber, feeding mechanism, screening mechanism and power mechanism;

[0015] The hopper is connected to the screening cavity, and the hopper is arranged on the top of the screening cavity;

[0016] A standard material outlet and a waste material outlet are provided below the screening cavity;

[0017] The feeding mechanism is arranged at the connection part between the hopper and the screening cavity, the feeding mechanism is located below the hopper, and the feeding mechanism pushes the powdered biomass hard carbon negative electrode material toward the screening cavity;

[0018] The screening mechanism is arranged in the screening cavity, and the screening mechanism includes a screen and a screening paddle. The screen is arranged above the standard material outlet, and the screen surrounds the screening paddle, and the screen has evenly distributed screen holes. The screening paddle is coaxially connected to the feeding mechanism, and the screening paddle is rotatably arranged to move the biomass hard carbon negative electrode material on the screen toward the waste outlet;

[0019] The power mechanism is arranged on one side of the feeding mechanism, and the power mechanism synchronously drives the feeding mechanism and the screening blade to rotate synchronously.

[0020] As an improvement, the feeding mechanism includes a rotating shaft and a propeller blade;

[0021] The two ends of the rotating shaft are respectively connected to the screening blade and the power mechanism;

[0022] The propeller blades are arranged around the side wall of the rotating shaft, and the propeller blades extend from the bottom of the hopper to the screening cavity.

[0023] As an improvement, the screening blade includes a main shaft and a blade;

[0024] The main shaft is coaxially connected with the rotating shaft, and the main shaft rotates synchronously with the rotating shaft;

[0025] The blades are arranged in an axial circumferential array along the main shaft, the blades are connected to the main shaft, and the blades are inclined at an angle to the axial direction of the main shaft.

[0026] As an improvement, when the screening paddle rotates, the screen and the screening paddle are arranged to rotate in the opposite direction.

[0027] As an improvement, the screening blades are connected to the screen by a planetary gear transmission set.

[0028] As a modification, the planetary gear transmission group includes a connector, a sun gear, a planetary gear and a ring gear;

[0029] The connector is coaxially connected to the screen, and the connector is located above the waste outlet;

[0030] The sun gear is connected to the main shaft, and the sun gear is driven to rotate by the main shaft;

[0031] The planetary wheels are arranged in a plurality of groups around the circumference of the sun wheel, the planetary wheels are meshed with the sun wheel, and the planetary wheels are rotatably mounted on the side wall of the screening chamber;

[0032] The gear ring is sleeved and mounted on the connecting head, and the gear ring is meshed with the planetary gear.

[0033] As an improvement, a knocking mechanism is provided between the screen and the screening cavity, and the knocking mechanism knocks the screen as the screen rotates.

[0034] As an improvement, the striking mechanism includes a rotating ring and a striking hammer;

[0035] The rotating ring is sleeved on the screen, and a plurality of arc grooves are evenly distributed on the circumferential side wall of the rotating ring;

[0036] The knocking hammer is swingably mounted on the screening cavity. The knocking hammer rotates with the rotating ring and knocks the screen through the movement of the arc groove.

[0037] As an improvement, the power mechanism includes a pulley transmission group and a power motor;

[0038] The pulley transmission group is connected to the power motor and the feeding mechanism, and the power motor drives the feeding mechanism and the screening paddle to operate synchronously through the pulley transmission group.

[0039] The beneficial effects of the utility model are:

[0040] (1) The utility model improves the screen on the screening device so that the screen can rotate in the opposite direction relative to the screening blades, so that when the screen is working, the working part can be switched in real time to avoid blockage of the same part after working for a long time, reduce the number of times the screen needs to be cleaned and maintained, and extend the working time cycle of the screen;

[0041] (2) The utility model arranges the main shaft of the screening blade and the blade in an alternating manner, so that when the blade rotates, it can push the biomass hard carbon negative electrode material accumulated on the screen toward the waste material outlet. During the movement, the biomass hard carbon negative electrode material that meets the screening standards passes through the screen and is discharged outward through the standard material outlet, while the waste material is discharged through the waste material outlet for another crushing, thereby greatly improving the screening efficiency;

[0042] (3) The utility model improves the screen by installing a knocking mechanism between the screen and the top of the side wall of the screening chamber. The rotation of the screen drives the rotating ring to rotate, and the arc groove arranged on the rotating ring drives the knocking hammer arranged on the upper side to swing. The knocking hammer knocks the rotating ring through the swing, thereby driving the screen to vibrate, avoiding blockage of the filter holes on the screen, thereby further reducing the number of times the screen needs to be cleaned and maintained, and extending the working life of the screen.

[0043] In summary, the utility model has the advantages of high screening efficiency and long working life of the screen, and is particularly suitable for the technical field of automatic screening and processing equipment for the production of biomass hard carbon materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0045] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0046] Figure 3 It is a schematic diagram of the local structure of the utility model;

[0047] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0048] Figure 5 for Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0049] Figure 6 This is a three-dimensional structural diagram of the feeding mechanism of the utility model;

[0050] Figure 7 This is a schematic diagram of the three-dimensional structure of the screening blade of the utility model;

[0051] Figure 8 This is a three-dimensional structural diagram of the planetary gear transmission group of the utility model;

[0052] Fig. 9 It is a front view structural diagram of the striking mechanism of the utility model.

[0053] In the figure: 1. hopper, 2. screening cavity, 21. standard material output port, 22. waste material output port, 3. feeding mechanism, 31. rotating shaft, 32. propeller blade, 4. screening mechanism, 41. screen, 42. screening blade, 421. main shaft, 422. blade, 43. planetary gear transmission group, 431, including connector, 432, sun gear, 433, planetary gear, 434 gear ring, 5. power mechanism, 51. pulley transmission group, 52. power motor, 6. knocking mechanism, 61. rotating ring, 611. arc groove, 62. knocking hammer. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0057] Embodiment 1:

[0058] like Figures 1 to 8 As shown, a biomass hard carbon negative electrode material production screening device comprises:

[0059] Hopper 1, screening chamber 2, feeding mechanism 3, screening mechanism 4 and power mechanism 5;

[0060] The hopper 1 is connected to the screening chamber 2, and the hopper 1 is arranged on the top of the screening chamber 2;

[0061] A standard material outlet 21 and a waste material outlet 22 are provided below the screening chamber 2. The standard material outlet 21 is used to output the biomass hard carbon negative electrode material screened by the screening mechanism 4, while the waste material that does not meet the screening standard is retained and discharged outward through the waste material outlet 22.

[0062] The feeding mechanism 3 is arranged at the connection part between the hopper 1 and the screening chamber 2. The feeding mechanism 3 is located below the hopper 1, and the feeding mechanism 3 pushes the powdered biomass hard carbon negative electrode material toward the screening chamber 2. The feeding mechanism 3 includes a rotating shaft 31 and a propeller blade 32; the two ends of the rotating shaft 31 are respectively connected to the screening blade 42 and the power mechanism 5; the propeller blade 32 is arranged around the side wall of the rotating shaft 31, and the propeller blade 32 extends from the bottom of the hopper 1 to the screening chamber 2; the propeller blade 32 is driven to rotate by the rotation of the rotating shaft 31, and then the biomass hard carbon negative electrode material falling from the hopper 1 is pushed by the propeller blade 32 to move toward the screening chamber 2;

[0063] The screening mechanism 4 is arranged in the screening cavity 2, and the screening mechanism 4 includes a screen 41 and a screening paddle 42. The screen 41 is arranged above the standard material output port 21, and the screen 41 is arranged around the screening paddle 42, and the screen 41 has evenly distributed screen holes. The screening paddle 42 is coaxially connected to the feeding mechanism 3, and the screening paddle 42 is rotatably arranged to move the biomass hard carbon negative electrode material on the screen 41 toward the waste output port 22. The screen 41 is cylindrically arranged and just docked with the propeller blade 32. The propeller blade 32 pushes the biomass hard carbon negative electrode material into the cylindrical space of the screen 41, and then the biomass hard carbon negative electrode material is rotated and pushed by the screening paddle 42, so that the biomass hard carbon negative electrode material is spread on the screen 41, and the biomass hard carbon negative electrode material is screened by the screen 41;

[0064] The power mechanism 5 is arranged on one side of the feeding mechanism 3, and the power mechanism 5 synchronously drives the feeding mechanism 3 and the screening paddle 42 to rotate synchronously. The power mechanism 5 includes a pulley transmission group 51 and a power motor 52; the pulley transmission group 51 transmits and connects the power motor 52 and the feeding mechanism 3, and the power motor 52 synchronously drives the feeding mechanism 3 and the screening paddle 42 to operate through the pulley transmission group 51.

[0065] Furthermore, the screening blade 42 includes a main shaft 421 and a blade 422;

[0066] The main shaft 421 is coaxially connected with the rotating shaft 31, and the main shaft 421 rotates synchronously with the rotating shaft 31;

[0067] The blades 422 are arranged in an axial circumferential array along the main shaft 421 . The blades 422 are connected to the main shaft 421 , and the blades 422 are inclined at an angle to the axial direction of the main shaft 421 .

[0068] When the main shaft 421 rotates, the paddle 422 will be driven by the main shaft 421 to rotate. Due to the inclined setting of the paddle 422, the paddle 422 has the ability to push and lay the biomass hard carbon negative electrode material.

[0069] In addition, as a preferred embodiment, when the screening blade 42 rotates, the screen 41 and the screening blade 42 are arranged to rotate in the opposite direction.

[0070] Specifically, the screening blade 42 is connected to the screen 41 via a planetary gear transmission set 43 .

[0071] The planetary gear transmission set 43 includes a connector 431, a sun gear 432, planetary gears 433 and a ring gear 434;

[0072] The connector 431 is coaxially connected to the screen 41 and is located above the waste outlet 22;

[0073] The sun gear 432 is connected to the main shaft 421, and the sun gear 432 is driven to rotate by the main shaft 421;

[0074] The planetary gears 433 are arranged in a plurality of groups around the circumference of the sun gear 432, the planetary gears 433 are meshed with the sun gear 432, and the planetary gears 433 are rotatably mounted on the side wall of the screening chamber 2;

[0075] The gear ring 434 is sleeved and installed on the connecting head 431 , and the gear ring 434 is meshed with the planetary gear 433 .

[0076] When the screen paddle 42 rotates, the planetary gear transmission group 43 is used to drive the screen 41 to rotate in the opposite direction relative to the screen paddle 42. The rotation of the screen 41 can keep the lower working area of ​​the screen 41 in a switching state at all times. The screen 41 rotates in the opposite direction relative to the screen paddle 42, and the screen paddle 42 can be used to stir the biomass hard carbon negative electrode material to improve the filtering efficiency of the screen 41 on the biomass hard carbon negative electrode material.

[0077] Embodiment 2:

[0078] like Figure 3 , 4 , 9, with reference to Example 1, the difference between Example 2 of the utility model and Example 1 is described as follows:

[0079] A knocking mechanism 6 is provided between the screen 41 and the screening chamber 2 , and the knocking mechanism 6 knocks the screen 41 as the screen 41 rotates.

[0080] Furthermore, the striking mechanism 6 includes a rotating ring 61 and a striking hammer 62;

[0081] The rotating ring 61 is sleeved on the screen 41, and a plurality of arc grooves 611 are evenly distributed on the circumferential side wall of the rotating ring 61;

[0082] The knocking hammer 62 is swingably mounted on the screening chamber 2 . The knocking hammer 62 rotates with the rotating ring 61 , and is moved by the arc groove 611 , so that the knocking hammer 62 knocks the screen 41 .

[0083] It should be noted that the rotation of the screen 41 drives the rotating ring 61 to rotate, and the arc groove 611 provided on the rotating ring 61 drives the knocking hammer 62 to swing. After the knocking hammer 62 swings over the highest point of the arc groove 611, the knocking hammer 62 will directly knock the rotating ring 61 due to the action of gravity, thereby forming a knocking vibration effect on the screen 41. Through the knocking vibration, the biomass hard carbon negative electrode material blocked on the screen 41 is knocked off.

[0084] Working process:

[0085] During operation, the crushed biomass hard carbon negative electrode material is input through the hopper 1, and the biomass hard carbon negative electrode material is pushed by the rotation of the propeller blades 32 in the feeding mechanism 3, so that the biomass hard carbon negative electrode material is transported from the hopper 1 to the cylindrical screen 41 in the screening chamber 2, and is filtered and screened by the screen 41, so that the biomass hard carbon negative electrode material that meets the screening standards is output through the standard material output port 21, and the biomass hard carbon negative electrode material that does not meet the screening standards is retained on the screen 41, and is transmitted through the screen 41 to the waste material output port 22 for discharge.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A biomass hard carbon negative electrode material production screening device, characterized in that: include: A hopper (1), a screening chamber (2), a feeding mechanism (3), a screening mechanism (4) and a power mechanism (5); The hopper (1) is connected to the screening cavity (2), and the hopper (1) is arranged at the top of the screening cavity (2); A standard material outlet (21) and a waste material outlet (22) are provided below the screening cavity (2); The feeding mechanism (3) is arranged at the connection portion between the hopper (1) and the screening cavity (2), the feeding mechanism (3) is located below the hopper (1), and the feeding mechanism (3) pushes the powdered biomass hard carbon negative electrode material toward the screening cavity (2); The screening mechanism (4) is arranged in the screening cavity (2), and comprises a screen (41) and a screening blade (42). The screen (41) is arranged above the standard material outlet (21), the screen (41) surrounds the screening blade (42), and the screen (41) has evenly distributed screen holes. The screening blade (42) is coaxially connected to the feeding mechanism (3), and the screening blade (42) is rotatably arranged to move the biomass hard carbon negative electrode material on the screen (41) toward the waste material outlet (22); The power mechanism (5) is arranged on one side of the feeding mechanism (3), and the power mechanism (5) synchronously drives the feeding mechanism (3) and the screening blade (42) to rotate synchronously.

2. A biomass hard carbon negative electrode material production screening device according to claim 1, characterized in that: The feeding mechanism (3) comprises a rotating shaft (31) and a propeller blade (32); The two ends of the rotating shaft (31) are respectively connected to the screening blade (42) and the power mechanism (5); The propeller blades (32) are arranged around the side wall of the rotating shaft (31), and the propeller blades (32) extend from the bottom of the hopper (1) to the inside of the screening cavity (2).

3. A biomass hard carbon negative electrode material production screening device according to claim 2, characterized in that: The screening blade (42) comprises a main shaft (421) and a blade (422); The main shaft (421) is coaxially connected to the rotating shaft (31), and the main shaft (421) rotates synchronously with the rotating shaft (31); The paddle blades (422) are arranged in an axial circumferential array along the main shaft (421); the paddle blades (422) are connected to the main shaft (421), and the paddle blades (422) are inclined at an angle to the axial direction of the main shaft (421).

4. A biomass hard carbon negative electrode material production screening device according to claim 3, characterized in that: When the screening blade (42) rotates, the screen (41) and the screening blade (42) are arranged to rotate in the opposite direction.

5. A biomass hard carbon negative electrode material production screening device according to claim 4, characterized in that: The screening blade (42) is transmission-connected to the screen (41) via a planetary gear transmission set (43).

6. A biomass hard carbon negative electrode material production screening device according to claim 5, characterized in that: The planetary gear transmission set (43) comprises a connector (431), a sun gear (432), planetary gears (433) and a ring gear (434); The connector (431) is coaxially connected to the screen (41), and the connector (431) is located above the waste material outlet (22); The sun gear (432) is connected to the main shaft (421), and the sun gear (432) is driven to rotate by the main shaft (421); The planetary wheels (433) are arranged in a plurality of groups around the circumference of the sun wheel (432), the planetary wheels (433) are meshed with the sun wheel (432), and the planetary wheels (433) are rotatably mounted on the side wall of the screening chamber (2); The gear ring (434) is sleeved and mounted on the connecting head (431), and the gear ring (434) is meshed with the planetary gear (433).

7. A biomass hard carbon negative electrode material production screening device according to claim 4, characterized in that: A knocking mechanism (6) is provided between the screen (41) and the screening chamber (2), and the knocking mechanism (6) knocks the screen (41) as the screen (41) rotates.

8. The biomass hard carbon negative electrode material production screening device according to claim 7, characterized in that: The striking mechanism (6) comprises a rotating ring (61) and a striking hammer (62); The rotating ring (61) is sleeved on the screen (41), and a plurality of arc-shaped grooves (611) are evenly distributed on the circumferential side wall of the rotating ring (61); The knocking hammer (62) is swingably mounted on the screening chamber (2); the knocking hammer (62) rotates with the rotating ring (61) and is moved by the arc groove (611), so that the knocking hammer (62) knocks the screening mesh (41).

9. The biomass hard carbon negative electrode material production screening device according to claim 1, characterized in that: The power mechanism (5) comprises a pulley transmission group (51) and a power motor (52); The pulley transmission group (51) is connected to the power motor (52) and the feeding mechanism (3); the power motor (52) drives the feeding mechanism (3) and the screening blade (42) to operate synchronously via the pulley transmission group (51).

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