Vibrating screening equipment for graphite negative electrode material processing

Abstract

The utility model provides vibration screening equipment for processing a graphite cathode material. The vibration screening equipment comprises a feeding pipe, a blanking pipe, a flow guide assembly and a vibration screening assembly, two groups of blanking pipes are arranged, the two groups of blanking pipes are communicated with the feeding pipe, and the two groups of blanking pipes and the feeding pipe are connected in a three-fork shape; the flow guide assembly is rotationally mounted at the communication part of the feeding pipe and the blanking pipe and is used for controlling the blanking direction of a negative electrode material; the two groups of vibrating screen assemblies are correspondingly mounted at the bottom of the blanking pipe respectively, each vibrating screen assembly comprises a shell and a screening unit arranged in the shell, each shell comprises a shell body and an access door rotationally arranged on the shell body, each screening unit comprises a screen mesh, and the screen mesh is arranged in the shell body. A linkage unit is arranged between the access door and the screen, and when the access door is opened in a rotating mode, the screen is taken out through the linkage unit.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery negative electrode material production equipment, in particular to a vibration screening device for processing graphite negative electrode materials. Background Art

[0002] Filtration and screening are important links in the production and processing of graphite negative electrode materials. During screening, the existing screening devices are prone to adhesion and clogging of the screen due to the uneven particle size distribution and strong adhesion of the graphite negative electrode materials. In severe cases, the screen will be damaged, reducing screening efficiency and increasing production costs.

[0003] A Chinese utility model with application number CN202223369548.2 discloses a vibrating screening device for negative electrode materials of lithium batteries, including a vibrating screener and a feed pipe. The feed pipe is in the shape of a three-pronged tube, consisting of a feed riser section and two discharge pipe sections connected to the feed riser section. A flap-type material guide assembly is provided at the connection point between the feed riser section and the discharge pipe section, which connects the feed riser section with one of the discharge pipe sections. A camera assembly is provided at the position of the feed pipe section corresponding to the upper opening of the vibrating screener, which solves the problem of low production efficiency of existing vibrating screening devices for negative electrode materials of lithium batteries due to frequent replacement of screens.

[0004] However, the inventors found that the equipment has the following problems: 1. When the screen surface in the vibrating screener is blocked, the screen surface needs to be disassembled and cleaned, and the disassembly process is inconvenient; 2. The magnet block is used in conjunction with a runway-type electromagnetic coil to achieve the vibration effect. When current passes through the electromagnetic coil, heat will be generated. Under continuous working conditions, the coil temperature may be too high, affecting its performance and life, and may even cause safety hazards; 3. During the vibration screening process of the negative electrode material, dust will fly, and the visibility in the discharge pipe section is very low, making it inconvenient to observe using a camera assembly. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies in the prior art and to propose a vibrating screening device for processing graphite negative electrode materials, comprising a feed pipe, a drop pipe, a guide assembly, and a vibrating screening assembly. An inspection door is provided on the vibrating screening assembly, and when the inspection door is rotated and opened, the screen is taken out through a linkage unit, so that subsequent manual labor can easily take out the entire screen without using tools for cleaning and maintenance.

[0006] In view of the above technical problems, the technical solution adopted by the utility model is as follows: a vibration screening equipment for processing graphite negative electrode materials, comprising a feed pipe, a drop pipe, a guide assembly, and a vibration screening assembly; the drop pipe is provided with two groups, the two groups of drop pipes are connected to the feed pipe, and the two groups of drop pipes and the feed pipe are connected in a trident shape; the guide assembly is rotatably installed at the connection point between the feed pipe and the drop pipe, and the guide assembly controls the drop direction of the negative electrode material; the vibration screening assembly is provided with two groups, which are respectively installed at the bottom of the drop pipe, the vibration screening assembly includes an outer shell, a screening unit arranged in the outer shell, the outer shell includes a shell, an inspection door rotatably arranged on the shell, the screening unit includes a screen, a linkage unit is arranged between the inspection door and the screen, and when the inspection door is rotated and opened, the screen is brought out by the linkage unit.

[0007] Preferably, an air nozzle is provided at the inclined upper end of the drop tube, and the opening of the air nozzle is toward the inclined lower end.

[0008] As a preferred embodiment, the guide assembly includes a main shaft, a driving member, and a guide plate; the main shaft is rotatably arranged at the center of the connection point between the feed pipe and the drop pipe; the driving member is installed on the outside of the connection point between the feed pipe and the drop pipe, and the driving member shaft is connected to the main shaft and drives the main shaft to rotate; the guide plate is sleeved on the main shaft and rotates with the main shaft.

[0009] As a preferred embodiment, the guide plate is V-shaped, and the angle between the two side plates is 120°. In the initial state, the angle openings of the two side plates face downward, and the angle between the two side plates and the horizontal direction is 60°.

[0010] As a preferred embodiment, the screen is slidably arranged in the shell, and the screen includes a frame, a filter arranged in the frame, and a slide groove arranged on one side of the frame, and the slide groove has two sections, which are respectively located on the upper end surface and the lower end surface of the frame; the screening unit also includes an oscillator and a buffer pad; the oscillator is penetrated and arranged on one side of the shell and contacts the screen; the buffer pad is arranged on the inner wall on the other side of the shell.

[0011] Preferably, the linkage unit comprises a swing arm and an elastic buckle; one end of the swing arm is hinged to the inspection door; the elastic buckle is fixed to the other end of the swing arm, and the elastic buckle can be detachably mounted on the corresponding slide groove.

[0012] Preferably, a discharge pipe is provided at the bottom of the vibration screening assembly, and a sensor is installed on the discharge pipe.

[0013] Beneficial effects of the utility model:

[0014] 1. By setting a linkage unit between the inspection door and the screen, when the inspection door is opened, the screen is taken out through the linkage unit, so that the screen can be easily taken out as a whole without using tools, and the cleaning and maintenance can be carried out manually, thereby improving work efficiency;

[0015] 2. Use an external oscillator to vibrate the screen. The oscillator has its own heat dissipation component, so it will not overheat and reduce the service life of the oscillator, causing potential safety hazards, thereby improving the safety of the production process and reducing cost expenditure;

[0016] 3. A sensor is installed on the discharge pipe to monitor the discharge situation, which will not be affected by the flying dust during vibration screening. It can timely and effectively judge whether the screen is damaged or blocked by the discharge volume, which further improves work efficiency and product quality.

[0017] In summary, the equipment has the advantages of high working efficiency, high safety, high production quality, etc., and is particularly suitable for the technical field of lithium battery negative electrode material production equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of a vibration screening device for processing graphite negative electrode materials;

[0020] Figure 2 A partial cross-sectional view of a vibrating screening device for processing graphite negative electrode materials;

[0021] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0022] Figure 4 is a schematic diagram of the structure of the screen;

[0023] Figure 5 A partial view of a vibrating screening device for processing graphite negative electrode materials;

[0024] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0025] Figure 7 Schematic diagram of the structure of the vibration screening component Figure 1 ;

[0026] Figure 8Schematic diagram of the structure of the vibration screening component Figure 2 .

[0027] The attached drawings are marked as follows: 1. Feed pipe; 2. Dropping pipe; 21. Air nozzle; 3. Guide assembly; 31. Main shaft; 32. Driving member; 33. Guide plate; 4. Vibrating screening assembly; 41. Outer shell; 411. Shell; 412. Inspection door; 42. Screening unit; 421. Screen; 4211. Frame; 4212. Filter. 4213. Slide; 422. Oscillator; 423. Buffer pad; 43. Linkage unit; 431. Swing arm; 432. Elastic buckle; 5. Discharge pipe; 51. Sensor. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] Embodiment 1:

[0032] like Figures 1 to 8As shown, a vibrating screening device for processing graphite negative electrode materials comprises a feed pipe 1, a drop pipe 2, a flow guide assembly 3, and a vibrating screening assembly 4; the drop pipe 2 is provided with two groups, the two groups of drop pipes 2 are connected to the feed pipe 1, and the two groups of drop pipes 2 and the feed pipe 1 are connected in a trident shape; the flow guide assembly 3 is rotatably installed at the connection between the feed pipe 1 and the drop pipe 2, and the flow guide assembly 3 controls the drop direction of the negative electrode material; the vibrating screening assembly 4 is provided with two The groups are respectively installed at the bottom of the drop pipe 2, the vibration screening assembly 4 includes an outer shell 41, a screening unit 42 arranged in the outer shell, the outer shell 41 includes a shell body 411, an inspection door 412 rotatably arranged on the shell body 411, the screening unit 42 includes a screen 421, a linkage unit 43 is arranged between the inspection door 412 and the screen 421, and when the inspection door 412 is rotated to open, the screen 421 is brought out through the linkage unit 43.

[0033] It should be noted here that by providing a linkage unit 43 between the inspection door 412 and the screen 421, when the inspection door is opened, the partial frame 4211 of the screen 421 with the slide groove 4213 on one side is brought out of the shell 41 through the linkage unit 43, and then the elastic buckle 432 is manually detached from the slide groove 4213, and the screen 421 is pulled out for cleaning and maintenance, thereby improving work efficiency.

[0034] like Figure 2 As shown, an air nozzle 21 is provided at the inclined upper end of the drop tube 2, and the opening of the air nozzle 21 faces the inclined lower end.

[0035] It is worth mentioning that, by providing an air nozzle 21 , when the inclined surface of the drop tube 2 is clogged by accumulation during the drop tube 2 , air blowing is performed to blow the negative electrode material into the vibration screening assembly 4 .

[0036] like Figure 1 , 2 As shown, the guide assembly 3 includes a main shaft 31, a driving member 32, and a guide plate 33; the main shaft 31 is rotatably arranged at the center of the connection point between the feed pipe 1 and the drop pipe 2; the driving member 32 is installed on the outer side of the connection point between the feed pipe 1 and the drop pipe 2, and the driving member 32 shaft is connected to the main shaft 31 and drives the main shaft 31 to rotate; the guide plate 33 is sleeved on the main shaft 31 and rotates with the main shaft 31.

[0037] like Figure 2 The guide plate 33 is shown to be V-shaped, with the angle between the two side plates being 120°. In the initial state, the angle openings of the two side plates face downward, and the angle between the two side plates and the horizontal direction is 60°.

[0038] It is worth mentioning here that by setting up the guide component 3, when the screen on one side is blocked, damaged, etc., the driving member 32 drives the guide plate 33 to rotate through the main shaft 31, blocking the drop pipe 2 on the side with the problem, so that all the materials fall to the other side that is working normally.

[0039] like Figure 2 , 3 As shown in Figure 4, the screen 421 is slidably arranged in the shell 411, and the screen 421 includes a frame 4211, a filter 4212 arranged in the frame 4211, and a slide groove 4213 arranged on one side of the frame 4211. The slide groove 4213 has two sections, which are respectively located on the upper end surface and the lower end surface of the frame 4211; the screening unit 42 also includes an oscillator 422 and a buffer pad 423; the oscillator 422 is penetrated and arranged on one side of the shell 411 and contacts the screen 421; the buffer pad 423 is arranged on the inner wall of the other side of the shell 411.

[0040] It should be noted that, when the oscillator 422 vibrates the screen 421 , the buffer spring pad 423 protects the screen 421 and also slightly rebounds the screen 421 to contact the oscillator 422 .

[0041] It is worth mentioning here that by using an external oscillator 422 to vibrate the screen 421, the oscillator 422 has its own heat dissipation component, and will not overheat to reduce the service life of the oscillator 422 and cause safety hazards, thereby improving the safety of the production process and reducing cost expenditure.

[0042] like Figures 5 to 8 As shown, the linkage unit 43 includes a swing arm 431 and an elastic buckle 432; one end of the swing arm 431 is hinged on the inspection door 412; the elastic buckle 432 is fixed to the other end of the swing arm 431, and the elastic buckle 432 can be detachably installed on the corresponding slide groove 4213.

[0043] It is worth mentioning here that the swing arm 431 hinged on the inspection door 412 will rotate when the inspection door 412 is turned to open, so that the elastic buckle 432 continues to be close to the side wall of the slide groove 4213, bringing out the screen 421. The rotation of the swing arm 431 prevents the screen 421 from interfering with the inspection door 412 when it is brought out.

[0044] like Figure 1 , 2 As shown, a discharge pipe 5 is provided at the bottom of the vibration screening component 4 , and a sensor 51 is installed on the discharge pipe 5 .

[0045] It is worth mentioning here that the sensor 51 is set to monitor the discharge situation, which will not be affected by the flying dust during vibration screening, and can timely and effectively judge whether the screen 421 is damaged or blocked based on the discharge volume.

[0046] The working process is as follows:

[0047] The graphite negative electrode material enters from the feed pipe 1, and then falls into the corresponding vibration screening assembly 4 below along the drop pipes 2 on both sides. When the drop pipe 2 is blocked, the air nozzle 21 will blow air into the drop pipe 2 to blow the graphite negative electrode material blocked in the drop pipe 2 into the vibration screening assembly 4. The oscillator 422 continuously provides an oscillating force to the screen 421 to screen the graphite negative electrode material. The screened graphite negative electrode material is discharged from the discharge pipe 5 below.

[0048] When the sensor 51 on one side detects an abnormal discharge volume, the guide component 3 rotates to block the side with the abnormal discharge, allowing the material to fall to the other side. The inspection door 412 on the side with the abnormal discharge is opened manually. During the process of the inspection door 412 rotating and opening, the linkage unit 43 brings the partial frame 4211 on the side of the sieve 421 with the slide groove 4213 out of the shell 41. Subsequently, the elastic buckle 432 is manually detached from the slide groove 4213, and the sieve 421 is pulled out for cleaning and maintenance, and then put back into the shell after completion.

[0049] 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 vibrating screening device for processing graphite negative electrode materials, comprising a feed pipe (1), characterized in that: Also includes: Dropping pipe (2), flow guide assembly (3), vibration screening assembly (4); The drop tubes (2) are provided in two groups, and the two groups of drop tubes (2) are both connected to the feed tube (1), and the two groups of drop tubes (2) and the feed tube (1) are connected in a trident shape; The flow guide component (3) is rotatably mounted at the connection point between the feed pipe (1) and the drop pipe (2), and the flow guide component (3) controls the drop direction of the negative electrode material; The vibrating screening assembly (4) is provided with two groups, which are respectively installed at the bottom of the drop pipe (2). The vibrating screening assembly (4) comprises an outer shell (41), and a screening unit (42) arranged in the outer shell. The outer shell (41) comprises a shell (411), and an inspection door (412) rotatably arranged on the shell (411). The screening unit (42) comprises a screen (421). A linkage unit (43) is provided between the inspection door (412) and the screen (421). When the inspection door (412) is rotated to open, the screen (421) is brought out through the linkage unit (43).

2. A vibrating screening device for processing graphite negative electrode materials according to claim 1, characterized in that: An air nozzle (21) is provided at the inclined upper end of the drop tube (2), and the opening of the air nozzle (21) faces the inclined lower end.

3. The vibrating screening equipment for processing graphite negative electrode materials according to claim 1, characterized in that: The flow guide assembly (3) comprises a main shaft (31), a driving member (32), and a flow guide plate (33); The main shaft (31) is rotatably arranged at the center of the connection point between the feeding pipe (1) and the dropping pipe (2); The driving member (32) is installed on the outside of the connection point between the feeding pipe (1) and the blanking pipe (2), and the rotating shaft of the driving member (32) is connected to the main shaft (31) and drives the main shaft (31) to rotate; The guide plate (33) is sleeved on the main shaft (31) and rotates along with the main shaft (31).

4. A vibrating screening device for processing graphite negative electrode materials according to claim 3, characterized in that: The guide plate (33) is V-shaped, and the angle between the two side plates is 120°. In the initial state, the angle openings of the two side plates face downward, and the angle between the two side plates and the horizontal direction is 60°.

5. The vibrating screening equipment for processing graphite negative electrode materials according to claim 1, characterized in that: The screen (421) is slidably disposed in the housing (411), the screen (421) comprising a frame (4211), a filter (4212) disposed in the frame (4211), and a slide groove (4213) disposed on one side of the frame (4211), the slide groove (4213) having two ends, which are respectively located on the upper end surface and the lower end surface of the frame (4211); The screening unit (42) further includes an oscillator (422) and a buffer spring pad (423); The oscillator (422) is disposed through one side of the housing (411) and contacts the screen (421); The buffer spring pad (423) is arranged on the inner wall of the other side of the shell (411).

6. A vibrating screening device for processing graphite negative electrode materials according to claim 5, characterized in that: The linkage unit (43) comprises a swing arm (431) and an elastic buckle (432); One end of the swing arm (431) is hinged to the inspection door (412); The elastic buckle (432) is fixed to the other end of the swing arm (431), and the elastic buckle (432) is detachably mounted on the corresponding slide groove (4213).

7. The vibrating screening equipment for processing graphite negative electrode materials according to claim 1, characterized in that: A discharge pipe (5) is provided at the bottom of the vibration screening assembly (4), and a sensor (51) is installed on the discharge pipe (5).

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