Graphite screening device for lithium battery negative electrode

Abstract

The graphite screening device comprises a frame, the feeding end of the frame is connected with a pretreatment bin through a discharging pipe, a pretreatment mechanism is arranged in the pretreatment bin and comprises a pre-screening net, the bottom of the frame is connected with a supporting rod through a second spring, and the pre-screening net is arranged at the bottom of the frame. A second vibration motor is arranged on the outer side of the frame, a first screen and a second screen are installed in two installation grooves in the frame respectively, and material receiving boxes are correspondingly installed on the lower side of the first screen and the lower side of the second screen. The powder screening device is scientific and reasonable in structural design, the first screen and the second screen which are arranged front and back are arranged in the frame, and the second vibration motor is arranged to be used in cooperation, so that the frame can be continuously driven to vibrate, and then powder is fully screened; and the detachable material receiving box is arranged on the lower side of the first screen and the lower side of the second screen and used for receiving the materials, and the rapid screening treatment efficiency of the graphite raw materials is improved.

Description

Technical Field

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

[0002] The negative electrode of lithium batteries is made of graphite material. When processing graphite powder, the graphite is put into the screening device at one time. Graphites of different sizes are piled together. The upper end of the screening device bears a large weight during screening, which makes it inconvenient to drive and screen it. Screening devices are often used in the graphite processing process, but traditional graphite screening devices have relatively single functions and cannot perform multiple refinement screening of the materials in the graphite powder according to the size range, resulting in uneven materials after screening, which affects the screening quality of graphite. To this end, we propose a graphite screening device for lithium battery negative electrodes. Utility Model Content

[0003] The utility model aims to provide a graphite screening device for lithium battery negative electrode to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a graphite screening device for lithium battery negative electrode, comprising a frame, the feed end of the frame is connected to a pretreatment bin through a discharge pipe, a pretreatment mechanism is arranged inside the pretreatment bin, the pretreatment mechanism includes a pre-screen, the bottom of the frame is connected to a support rod through a second spring, a second vibration motor is arranged on the outside of the frame, a first screen and a second screen are respectively installed in two installation grooves in the frame, and a receiving box is correspondingly installed on the lower sides of the first screen and the second screen.

[0005] In the above solution, a bracket is provided at the bottom of the pretreatment bin, and a feed pipe is provided at the top of the pretreatment bin.

[0006] In the above solution, the lower side of the pre-screen is connected to the fixed plate via a first spring, and a first vibration motor is provided at the lower side of the pre-screen, and an inclined guide plate is provided below the pre-screen.

[0007] In the above solution, a nozzle is provided in the pretreatment chamber, and the nozzle is connected to the air pump through an air outlet pipe.

[0008] In the above solution, a discharge box is provided at the lower side of the rear end of the frame.

[0009] In the above solution, an ear seat is provided on the top edge of the material receiving box, and the ear seat is connected to the frame by bolts.

[0010] In the above solution, the aperture of the first sieve is smaller than the aperture of the second sieve.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the graphite screening device for the negative electrode of a lithium battery has a simple and reasonable structural design and is highly practical. By arranging a pre-screen, a first vibration motor, a first spring and other structures inside the pretreatment bin for use in combination, the graphite powder can be preliminarily screened and processed, and then the large-sized impurities inside the graphite can be removed, thereby improving the quality of subsequent screening processing of the graphite powder. By arranging an aeration mechanism composed of an air pump and an air outlet pipe, an air flow can be continuously generated to assist in blowing the pre-screened material into the frame through the discharge pipe, thereby improving the feeding effect. By arranging the first and second screens arranged front and back inside the frame, and by arranging the second vibration motor for use in combination, the frame can be continuously driven to vibrate and then the powder can be fully screened and processed. A detachable material receiving box is arranged at the lower side of the first and second screens for receiving the material, thereby improving the efficiency of rapid screening processing of graphite raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of the pretreatment bin of the utility model.

[0014] Figure 3 It is a schematic diagram of the internal structure of the framework of the utility model.

[0015] Figure 4 This is a schematic diagram of the installation structure of the material receiving box of the utility model.

[0016] In the figure: 1, frame 11, pretreatment bin 12, bracket 13, feed pipe 14, discharge pipe 15, air pump 16, air outlet pipe 17, guide plate 18, pre-screen 19, first vibration motor 2, first spring 21, second vibration motor 22, second spring 23, support rod 24, mounting groove 25, first screen 26, second screen 27, receiving box 28, ear seat 29, bolt 3, discharge box. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-4The utility model provides a technical solution: a graphite screening device for lithium battery negative electrode, comprising a frame 1, wherein the feeding end of the frame 1 is connected to a pretreatment bin 11 through a discharge pipe 14, a pretreatment mechanism is arranged inside the pretreatment bin 11, and the pretreatment mechanism comprises a pre-screen 18, the bottom of the frame 1 is connected to a support rod 23 through a second spring 22, a second vibration motor 21 is arranged outside the frame 1, a first screen 25 and a second screen 26 are respectively installed in two installation grooves 24 in the frame 1, and a receiving box 27 is correspondingly installed at the lower side of the first screen 25 and the second screen 26.

[0019] By arranging the first sieve 25 and the second sieve 26 in a front-to-back arrangement inside the frame 1, and by arranging the second vibration motor 21 for use in conjunction, the frame 1 can be continuously driven to vibrate and the powder can be fully screened. A detachable material receiving box 27 is arranged at the lower side of the first sieve 25 and the second sieve 26 to receive the material, thereby improving the rapid screening and processing efficiency of the graphite raw material.

[0020] In the above solution, a support 12 is provided at the bottom of the pretreatment chamber 11 , and a feed pipe 13 is provided at the top of the pretreatment chamber 11 . The graphite powder enters the pretreatment chamber 11 through the feed pipe 13 .

[0021] In the above scheme, the lower side of the pre-screen 18 is connected to the fixed plate through the first spring 2, and the lower side of the pre-screen 18 is provided with a first vibration motor 19, and an inclined guide plate 17 is provided below the pre-screen 18. By arranging the pre-screen 18, the first vibration motor 19, the first spring 2 and other structures in the pre-treatment bin 11 for use together, the graphite powder can be preliminarily screened and processed, and then the large-sized impurities in the graphite can be removed, thereby improving the quality of subsequent screening and processing of the graphite powder.

[0022] In the above scheme, a nozzle is provided in the pretreatment bin 11, and the nozzle is connected to the air pump 15 through the air outlet pipe 16. By providing an aeration mechanism composed of the air pump 15 and the air outlet pipe 16, airflow can be continuously generated to assist in blowing the pre-screened material into the frame 1 through the discharge pipe 14, thereby improving the material feeding effect. The airflow generated by the air pump 15 is ejected from the nozzle through the air outlet pipe 16, so that the graphite powder enters the frame 1 under the drive of the airflow. Specifically, a cover plate is provided on the top of the frame 1.

[0023] In the above solution, a discharge box 3 is provided at the lower side of the tail end of the frame 1. The remaining materials after screening by the first screen 25 and the second screen 26 enter the discharge box 3 through the tail end of the frame 1 for collection.

[0024] In the above scheme, the top edge of the material receiving box 27 is provided with an ear seat 28, and the ear seat 28 is connected to the frame 1 by a bolt 29. After the material receiving box 27 stores enough graphite powder, the bolt 29 can be removed, and then the material receiving box 27 can be quickly removed, thereby improving the use effect of the equipment.

[0025] In the above solution, the aperture of the first screen 25 is smaller than the aperture of the second screen 26. The aperture of the second screen 26 is smaller than the mesh diameter of the pre-screen 18.

[0026] Working principle:

[0027] When this type of graphite screening device for lithium battery negative electrode is used, the graphite powder to be screened is added from the feed pipe 13 to the pretreatment bin 11. At this time, the pre-screen 18 is driven to vibrate under the action of the first vibration motor 19 to screen the material. Impurities with larger sizes are intercepted by the pre-screen 18. The material after the initial screening enters the top of the guide plate 17. At this time, the airflow generated by the air pump 15 is ejected from the nozzle through the air outlet pipe 16, so that the graphite powder enters the frame 1 driven by the airflow. During this process, the second vibration motor 21 drives the frame 1 to vibrate continuously to screen the material. The graphite powder passes through the first screen 25 and the second screen 26 in the process of moving from left to right and falls into the corresponding receiving box 27 below. The remaining material is discharged into the discharge box 3 through the tail end of the frame 1.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A graphite screening device for lithium battery negative electrode, comprising a frame (1), characterized in that: The feed end of the frame (1) is connected to a pretreatment bin (11) via a discharge pipe (14); a pretreatment mechanism is arranged inside the pretreatment bin (11); the pretreatment mechanism comprises a pre-screen (18); the bottom of the frame (1) is connected to a support rod (23) via a second spring (22); a second vibration motor (21) is arranged outside the frame (1); a first screen (25) and a second screen (26) are respectively installed in two installation grooves (24) in the frame (1); and a material receiving box (27) is correspondingly installed at the lower side of the first screen (25) and the second screen (26).

2. A graphite screening device for lithium battery negative electrode according to claim 1, characterized in that: A support (12) is provided at the bottom of the pretreatment bin (11), and a feed pipe (13) is provided at the top of the pretreatment bin (11).

3. The graphite screening device for lithium battery negative electrode according to claim 1, characterized in that: The lower side of the pre-screen (18) is connected to a fixed plate via a first spring (2), a first vibration motor (19) is arranged at the lower side of the pre-screen (18), and an inclined guide plate (17) is arranged below the pre-screen (18).

4. The graphite screening device for lithium battery negative electrode according to claim 1, characterized in that: A nozzle is arranged in the pretreatment chamber (11), and the nozzle is connected to the air pump (15) via an air outlet pipe (16).

5. The graphite screening device for lithium battery negative electrode according to claim 1, characterized in that: A discharge box (3) is provided at the lower side of the rear end of the frame (1).

6. The graphite screening device for lithium battery negative electrode according to claim 1, characterized in that: The top edge of the material receiving box (27) is provided with an ear seat (28), and the ear seat (28) is connected to the frame (1) via bolts (29).

7. The graphite screening device for lithium battery negative electrode according to claim 1, characterized in that: The aperture of the first sieve (25) is smaller than the aperture of the second sieve (26).

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