Graphite powder classifying and screening device

Abstract

The utility model discloses graphite powder grading and screening device belongs to the graphite powder screening field, aims at solving the under existing technology rotary vibration screen for guaranteeing screening continuity, needs to the rotary vibration screen for the sustained feeding, leads to the feeding inlet unable to be completely closed, the rotary vibration screen work, the screen cloth high -frequency vibration drives internal air flow, the unsealed feeding inlet becomes the main passageway of dust overflow. Small graphite powder particle is extremely easy to be in the internal airflow, from the feeding inlet and out, forms the dust diffusion, not only seriously pollutes the production environment, still threatens the health of operator's problem. Including base, the upper end edge department of base is installed with spring equally, the top of base is provided with the top cover, and the upper end middle position of top cover is fixedly connected with the feeding pipe, and the screening mechanism is arranged between base and top cover, the inside of feeding pipe is provided with anti - surge mechanism, and the anti - surge mechanism includes the round axle connected in the inside of feeding pipe.

Description

Technical Field

[0001] This utility model belongs to the field of graphite powder screening, specifically relating to a graphite powder grading and screening device. Background Technology

[0002] In modern industrial production, graphite powder, due to its excellent electrical conductivity, lubricity, and high-temperature resistance, is widely used in battery anode materials, high-end lubricating materials, and refractory materials. Different applications have significantly different requirements for graphite powder particle size; therefore, grading and screening are crucial steps in ensuring the quality of graphite powder products. Vibrating screens, with their advantages of high screening efficiency, small footprint, and ability to perform multi-level grading, have become commonly used equipment for graphite powder screening.

[0003] However, in practical applications, to ensure continuous screening, the vibrating screen requires continuous feeding, which means the feed inlet cannot be completely sealed. During operation, the high-frequency vibration of the screen mesh drives internal airflow, and the unsealed feed inlet becomes the main channel for dust leakage. Fine graphite powder particles are easily carried away by the internal airflow and flow back out of the feed inlet, causing dust diffusion. This not only seriously pollutes the production environment but also threatens the health of operators.

[0004] Therefore, there is an urgent need to design a graphite powder grading and screening device to prevent graphite powder from flowing back out of the feed inlet. Utility Model Content

[0005] (1) Technical problems to be solved To address the shortcomings of existing technologies, the purpose of this invention is to provide a graphite powder grading and screening device. This device solves the problem that in existing vibrating screens, continuous feeding is required to ensure screening continuity, resulting in the inlet not being completely sealed. During operation, the high-frequency vibration of the screen mesh drives internal airflow, and the unsealed inlet becomes a major channel for dust leakage. Fine graphite powder particles are easily carried away by the internal airflow and flow back out of the inlet, causing dust diffusion. This not only seriously pollutes the production environment but also threatens the health of operators.

[0006] (2) Technical solution To solve the above-mentioned technical problems, this utility model provides a graphite powder grading and screening device, including a base, springs installed at equal intervals along the upper edge of the base, a top cover above the base, a feed pipe fixedly connected to the middle of the upper end of the top cover, a screening mechanism between the base and the top cover, an anti-surge mechanism inside the feed pipe, the anti-surge mechanism including a round shaft connected inside the feed pipe, rotating plates fixedly connected at equal intervals to the outer side of the round shaft, a left sealing block fixedly connected to the left end of the inner side of the feed pipe, a right stop block fixedly connected to the upper right end of the inner side of the feed pipe, and a disassembly unit at the rear end of the feed pipe.

[0007] Furthermore, the disassembly and assembly unit includes a circular plate connected to the rear end of the feed pipe, with connecting blocks fixedly connected to the left and right ends of the outer circumferential surface of the circular plate, and threaded rods connected to the left and right ends of the right side of the feed pipe, with nuts threadedly connected to the outer side of the threaded rods.

[0008] Furthermore, the screening mechanism includes a vibrating housing fixedly connected to the upper end of the spring, a vibrating motor installed inside the vibrating housing, a counterweight installed at the lower end of the vibrating motor, a bottom frame fixedly connected to the upper end of the vibrating housing, a middle frame installed at the upper end of the bottom frame, an upper frame installed at the upper end of the middle frame, an arched plate fixedly connected to the bottom inner side of the bottom frame, a first screen installed at the bottom inner side of the middle frame, a second screen installed at the bottom inner side of the upper frame, and discharge pipes installed at the outer ends of the bottom frame, middle frame, and upper frame.

[0009] Furthermore, a rotating hole is provided at the front end of the feed tube and the middle position inside the circular plate. The outer sides of the front and rear ends of the circular shaft are rotatably connected to the inner side of the rotating hole. The front side of the rotating plate is slidably connected to the front end of the inner side of the feed tube, and the rear side of the rotating plate is slidably connected to the front side of the circular plate.

[0010] Furthermore, the right end of the left sealing block is provided with a left arc-shaped groove, the lower left end of the right stop block is provided with a right arc-shaped groove, and the side of the rotating plate away from the circular shaft is slidably connected to the inner side of the left and right arc-shaped grooves.

[0011] Furthermore, the rear end of the feed pipe is provided with an installation port, and the left and right ends of the installation port are provided with installation grooves. The outer side of the circular plate is slidably connected to the inner side of the installation port, the outer side of the connecting block is slidably connected to the inner side of the installation groove, the connecting block has a through circular hole, the outer side of the threaded rod is slidably connected to the inner side of the circular hole, and the front side of the nut abuts against the rear side of the connecting block.

[0012] Furthermore, the upper side of the upper frame is fixedly connected to the lower side of the top cover, and the aperture of the first screen is smaller than that of the second screen.

[0013] Furthermore, a fixing frame is connected to the upper left end of the base, and fixing bolts are provided at the upper and lower ends of the fixing frame. Mounting holes are opened at the upper and lower ends of the fixing frame. Threaded holes are opened at the positions where the outer ends of the base and the vibrating shell contact the upper and lower ends of the fixing frame. The outer side of the fixing bolt is slidably connected to the inner side of the mounting hole, and the outer side of the fixing bolt is threadedly connected to the inner side of the threaded hole.

[0014] (3) Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, by setting up an anti-surge mechanism, uses the rotation of a rotating plate to convey graphite powder entering the feed pipe to the upper frame. This allows the inside and outside of the screening device to be separated by the rotating plate, which is in contact with the left sealing block and then the right baffle, thus preventing the graphite powder floating inside the screening device from surging out of the feed pipe and causing harm.

[0015] This invention, by setting up a disassembly and assembly unit, allows for the replacement of the rotating plate when it needs to be replaced due to wear. By removing the nut on the outside of the threaded rod and then moving the round plate and connecting block backward, the round shaft and the rotating plate can be moved out of the feed pipe together, thus replacing the rotating plate. This avoids the graphite powder from overflowing due to gaps between the rotating plate and the left sealing block and the right stop block caused by wear. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the base structure of this utility model; Figure 3 This is a schematic diagram of the structure at the lower end of the top cover of this utility model; Figure 4 This is a schematic diagram of the internal structure of the feed pipe of this utility model; Figure 5 This is a schematic diagram of the rear end structure of the feed pipe of this utility model.

[0018] The markings in the attached diagram are as follows: 1. Base; 2. Spring; 3. Top cover; 4. Feed pipe; 501. Vibrating housing; 502. Vibrating motor; 503. Counterweight; 504. Bottom frame; 505. Middle frame; 506. Top frame; 507. Arched plate; 508. First screen; 509. Second screen; 510. Discharge pipe; 601. Round shaft; 602. Rotating plate; 603. Left sealing block; 604. Right stop block; 701. Round plate; 702. Connecting block; 703. Threaded rod; 704. Nut; 8. Fixing frame; 9. Fixing bolt. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] This specific embodiment is a graphite powder grading and sieving device, the structural schematic diagram of which is shown below. Figures 1 to 3 As shown, the system includes a base 1, with springs 2 evenly spaced along the upper edge of the base 1. A top cover 3 is positioned above the base 1, and a feed pipe 4 is fixedly connected to the middle of the upper end of the top cover 3. A screening mechanism is located between the base 1 and the top cover 3. The screening mechanism includes a vibrating housing 501 fixedly connected to the upper end of the springs 2. A vibrating motor 502 is installed inside the vibrating housing 501, and a counterweight 503 is installed at the lower end of the vibrating motor 502. A bottom frame 504 is fixedly connected to the upper end of the moving outer shell 501. A middle frame 505 is installed on the upper end of the bottom frame 504. An upper frame 506 is installed on the upper end of the middle frame 505. An arched plate 507 is fixedly connected to the inner bottom end of the bottom frame 504. A first screen 508 is installed on the inner bottom end of the middle frame 505. A second screen 509 is installed on the inner bottom end of the upper frame 506. A discharge pipe 510 is installed on the outer ends of the bottom frame 504, middle frame 505, and upper frame 506. The upper side of the upper frame 506 is fixedly connected to the lower side of the top cover 3. The aperture of the first screen 508 is smaller than the aperture of the second screen 509. When the vibrating motor 502 is started, causing the weight 503 to rotate and the screening device to vibrate, the graphite powder enters the upper frame 506 through the feed pipe 4. After being filtered by the second screen 509 and the first screen 508, graphite powder of different particle sizes is discharged from the discharge pipes 510 at different heights and collected, thus completing the classification and screening of the graphite powder.

[0021] Cooperate Figure 4As shown, the feed pipe 4 is equipped with an anti-surge mechanism, which includes a round shaft 601 connected inside the feed pipe 4. Rotating plates 602 are fixedly connected at equal intervals on the outer side of the round shaft 601. A left sealing block 603 is fixedly connected to the left end of the inner side of the feed pipe 4. A right stop block 604 is fixedly connected to the upper right end of the inner side of the feed pipe 4. A left arc-shaped groove is opened at the right end of the left sealing block 603. A right arc-shaped groove is opened at the lower left end of the right stop block 604. The side of the rotating plate 602 away from the round shaft 601 is slidably connected to the inner side of the left arc-shaped groove and the right arc-shaped groove. Thus, when graphite powder is poured into the feed pipe 4 from the left end of the right stop 604, the graphite powder will fall onto the upper side of the rotating plate 602 located to the left of the round shaft 601, pressing down the rotating plate 602 and causing it to rotate until it rotates to the position below the left sealing block 603. The graphite powder on it then slides down to the upper frame 506 at the lower end for sieving.

[0022] Cooperate Figure 5 As shown, a disassembly unit is provided at the rear end of the feed pipe 4. The disassembly unit includes a circular plate 701 connected to the rear end of the feed pipe 4. Connecting blocks 702 are fixedly connected to the left and right ends of the outer circumferential surface of the circular plate 701. Threaded rods 703 are connected to the left and right ends of the right side of the feed pipe 4. Nuts 704 are threadedly connected to the outer side of the threaded rods 703. A rotating hole is provided at the front end of the feed pipe 4 and the middle position inside the circular plate 701. The outer sides of the front and rear ends of the circular shaft 601 are rotatably connected to the inner side of the rotating hole. The front side of the rotating plate 602 is slidably connected to the front end of the inner side of the feed pipe 4, and the rear side of the rotating plate 602 is slidably connected to the front side of the circular plate 701. An installation port is provided at the rear end of the feed pipe 4. Installation grooves are provided at the left and right ends of the installation port behind the feed pipe 4. The outer side of the circular plate 701 is slidably connected to the inner side of the installation port, and the outer side of the connecting block 702 is slidably connected to the inner side of the installation groove. A through circular hole is provided inside the connecting block 702. The outer side of the threaded rod 703 is slidably connected to the inner side of the circular hole. The front side of the nut 704 abuts against the rear side of the connecting block 702. Thus, by sliding the circular plate 701 to the inner side of the installation port, and simultaneously sliding the connecting block 702 to the inner side of the installation groove and passing through the outer side of the threaded rod 703, the nut 704 is then threaded to the outer side of the threaded rod 703 until the front side of the nut 704 contacts the rear side of the connecting block 702, the connecting block 702 can be pressed into the installation groove, and the circular plate 701 is fixed to the inner side of the installation port.

[0023] The base 1 has a fixed frame 8 connected to its upper left end. The fixed frame 8 has fixing bolts 9 at both its upper and lower ends, and mounting holes are provided at both ends. Threaded holes are provided at the points where the outer ends of the base 1 and the vibrating housing 501 contact the upper and lower ends of the fixed frame 8. The outer side of the fixing bolts 9 is slidably connected to the inner side of the mounting holes, and the outer side of the fixing bolts 9 is threadedly connected to the inner side of the threaded holes. Therefore, after placing the fixed frame 8 between the base 1 and the vibrating housing 501, and then fixing it between the base 1 and the vibrating housing 501 using the fixing bolts 9, the base 1 and the vibrating housing 501 are relatively fixed, ensuring that the screening device will not move relative to each other and be damaged during transportation.

[0024] Working principle: When classifying and screening graphite powder, the vibrating motor 502 is started first to make the weight 503 rotate, which makes the screening device vibrate. Then the graphite powder is poured into the feed pipe 4. As the rotating plate 602 rotates, it gradually enters the upper frame 506. After being filtered by the second screen 509 and the first screen 508, graphite powder of different particle sizes is discharged and collected from the discharge pipes 510 at different heights at the bottom frame 504, the middle frame 505 and the outer end of the upper frame 506, respectively, thus completing the classification and screening of graphite powder.

[0025] All technical features in this embodiment can be freely combined according to actual needs.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A graphite powder grading and sieving device, comprising a base (1), characterized in that, Springs (2) are installed at equal intervals at the upper edge of the base (1). A top cover (3) is provided above the base (1). A feed pipe (4) is fixedly connected at the middle position of the upper end of the top cover (3). A screening mechanism is provided between the base (1) and the top cover (3). An anti-surge mechanism is provided inside the feed pipe (4). The anti-surge mechanism includes a round shaft (601) connected inside the feed pipe (4). A rotating plate (602) is fixedly connected at equal intervals on the outer side of the round shaft (601). A left sealing block (603) is fixedly connected to the left end of the inner side of the feed pipe (4). A right stop block (604) is fixedly connected to the upper right end of the inner side of the feed pipe (4). A disassembly unit is provided at the rear end of the feed pipe (4).

2. The graphite powder grading and sieving device according to claim 1, characterized in that, The disassembly and assembly unit includes a circular plate (701) connected to the rear end of the feed pipe (4). Connecting blocks (702) are fixedly connected to the left and right ends of the outer circumferential surface of the circular plate (701). Threaded rods (703) are connected to the left and right ends of the feed pipe (4). Nuts (704) are threadedly connected to the outer side of the threaded rods (703).

3. The graphite powder grading and sieving device according to claim 1, characterized in that, The screening mechanism includes a vibrating shell (501) fixedly connected to the upper end of the spring (2). A vibrating motor (502) is installed inside the vibrating shell (501). A weight (503) is installed at the lower end of the vibrating motor (502). A bottom frame (504) is fixedly connected to the upper end of the vibrating shell (501). A middle frame (505) is installed at the upper end of the bottom frame (504). An upper frame (506) is installed at the upper end of the middle frame (505). An arched plate (507) is fixedly connected to the bottom inner side of the bottom frame (504). A first screen (508) is installed at the bottom inner side of the middle frame (505). A second screen (509) is installed at the bottom inner side of the upper frame (506). A discharge pipe (510) is installed at the outer ends of the bottom frame (504), middle frame (505), and upper frame (506).

4. The graphite powder grading and sieving device according to claim 1, characterized in that, A rotating hole is provided at the front end of the feed pipe (4) and the middle position inside the circular plate (701). The outer sides of the front and rear ends of the circular shaft (601) are rotatably connected to the inner side of the rotating hole. The front side of the rotating plate (602) is slidably connected to the front end of the inner side of the feed pipe (4), and the rear side of the rotating plate (602) is slidably connected to the front side of the circular plate (701).

5. The graphite powder grading and sieving device according to claim 1, characterized in that, The left sealing block (603) has a left arc-shaped groove at its right end, and the right stop block (604) has a right arc-shaped groove at its lower left end. The rotating plate (602) is slidably connected to the inner side of the left and right arc-shaped grooves on the side away from the circular shaft (601).

6. The graphite powder grading and sieving device according to claim 2, characterized in that, The feed pipe (4) has an installation port at its rear end. The feed pipe (4) has installation grooves at the left and right ends of the installation port. The outer side of the circular plate (701) is slidably connected to the inner side of the installation port. The outer side of the connecting block (702) is slidably connected to the inner side of the installation groove. The connecting block (702) has a through circular hole. The outer side of the threaded rod (703) is slidably connected to the inner side of the circular hole. The front side of the nut (704) abuts against the rear side of the connecting block (702).

7. The graphite powder grading and sieving device according to claim 3, characterized in that, The upper side of the upper frame (506) is fixedly connected to the lower side of the top cover (3), and the aperture of the first screen (508) is smaller than that of the second screen (509).

8. The graphite powder grading and sieving device according to claim 1, characterized in that, The base (1) is connected to a fixing frame (8) on the upper left side. The fixing frame (8) is provided with fixing bolts (9) at both the upper and lower ends. The fixing frame (8) is provided with mounting holes at both the upper and lower ends. The base (1) and the vibration shell (501) are provided with threaded holes at the positions where they contact the upper and lower ends of the fixing frame (8). The outer side of the fixing bolt (9) is slidably connected to the inner side of the mounting hole. The outer side of the fixing bolt (9) is threadedly connected to the inner side of the threaded hole.

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