Negative pressure material taking device for graphite crucible

Abstract

The utility model relates to the technical field of graphite crucibles, in particular to a negative pressure material taking device for a graphite crucible. Comprising a scraping shovel, a fixed material conveying pipe, a hopper and a rotary material conveying pipe, the scraping shovel is of a fan-shaped structure and is of a hollow structure, a material suction opening is formed in the side wall of the scraping shovel, a steel wire telescopic hose is connected to the top of the scraping shovel and communicates with the scraping shovel, and the top of the steel wire telescopic hose is connected with the rotary material conveying pipe; the top of the rotary conveying pipe is connected with the fixed conveying pipe, and the end, away from the rotary conveying pipe, of the fixed conveying pipe is connected with the hopper. According to the material taking device, the caked objects can be rapidly crushed through the scraping shovel and sucked out from the discharging opening formed in the scraping shovel, the operation height of the scraping shovel can be controlled, efficient treatment of the caked objects with different heights in the crucible is achieved, and the crucible material taking efficiency is improved. The negative-pressure material taking device is mainly applied to the negative-pressure material taking aspect of the graphite crucible.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite crucibles, and more specifically to a negative pressure material taking device for a graphite crucible. Background Art

[0002] Currently, the anode materials for commercial lithium-ion batteries are primarily graphite-based. Natural graphite or synthetic graphite precursors must first be crushed into suitable powder particles, followed by carbonization and graphitization. Typical treatment methods include graphitizing natural graphite to increase its purity to over 99%, or carbonizing petroleum coke, needle coke, or pitch coke before graphitization to produce qualified graphite-based anode materials.

[0003] During large-scale carbonization and graphitization processes, the coke needs to be loaded into a large crucible with a diameter of 0.6 meters and a height of 1.2 meters, and then the crucible needs to be placed in a carbonization furnace or a graphitization furnace for processing. After processing, the carbonized material needs to be removed from the crucible. The graphitized material becomes graphite powder, which is currently mainly sucked out by vacuum suction. However, the efficiency of vacuum suction is low. At the same time, during the carbonization process, raw materials such as petroleum coke, needle coke or pitch coke often agglomerate due to the uneven distribution of internal thermal stress and the interaction between substances. These agglomerates are not only large in size, but also tightly structured, making them difficult to directly suck out by conventional vacuum suction technology, especially when they are deposited at the bottom or corners of the large crucible, which poses a huge challenge to cleaning. Existing vacuum suction devices often have difficulty achieving the desired cleaning effect because the suction force is not enough to penetrate the interior of the agglomerate or cannot effectively disperse the agglomerates. Utility Model Content

[0004] To overcome the shortcomings of the prior art, the present invention provides a negative pressure material removal device for a graphite crucible. This device uses a scraper to quickly break up agglomerated materials and removes them from a discharge port on the scraper. The scraper's operating height can be controlled, enabling efficient handling of agglomerates of varying heights within the crucible, thereby improving crucible removal efficiency.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A negative pressure material taking device for a graphite crucible comprises a scraper, a fixed material transfer pipe, a hopper and a rotating material transfer pipe. The scraper adopts a fan-shaped structure and is hollow. A material suction port is provided on the side wall of the scraper. A steel wire telescopic hose is connected to the top of the scraper. The steel wire telescopic hose is communicated with the scraper. The top of the steel wire telescopic hose is connected to the rotating material transfer pipe. The top of the rotating material transfer pipe is connected to the fixed material transfer pipe. The end of the fixed material transfer pipe away from the rotating material transfer pipe is connected to the hopper.

[0007] The bottom edge of the scraper is provided with a sloped cutting edge.

[0008] The fixed material transfer pipe and the rotating material transfer pipe are connected via a deep groove ball bearing.

[0009] The rotating material transfer tube is provided with a rotation control component.

[0010] The rotation control assembly includes a worm gear, a worm shaft and a first motor. The worm gear is coaxially arranged on the outside of the rotating material transfer tube. The worm shaft is meshed with the worm gear. The worm shaft is connected to the first motor. The worm shaft is connected to the output shaft of the first motor through a coupling.

[0011] A height control assembly is provided between the rotating material transfer tube and the scraper, and the height control assembly includes an expansion rod, a movable disk and a compression spring. The movable disk is slidably arranged on the rotating material transfer tube, and three groups of expansion rods are provided. The bottom of the expansion rod is fixed on the scraper through a bearing, and the top of the expansion rod passes through the movable disk. The top of the expansion rod is connected to the second motor through a bearing, and the second motor is fixed on the rotating material transfer tube. A threaded hole matching the expansion rod is provided on the movable disk. The compression spring is arranged on the outside of the steel wire telescopic hose, and both ends of the compression spring are respectively arranged on the scraper and the movable disk.

[0012] An expansion rod nut is threadedly provided on the expansion rod above the movable disk.

[0013] The maximum elongation of the steel wire telescopic hose is 2500 mm.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The scraper's blade design ensures meticulous shearing and crushing of graphite product agglomerates into fine powder, facilitating rapid collection of the powder after negative pressure is applied. The compression spring on the hose ensures the bottom of the scraper maintains close contact with the graphite product. The expansion rod controls the extension of the telescopic hose after spring action. Different positions of the expansion rod nut assist in determining the scraper's position, enabling layered processing within the crucible. Bearings at the top and bottom of the expansion rod allow for simultaneous, uniform, and smooth rotation, allowing the scraper to move horizontally up and down. The rotation control assembly controls the rotation of the transfer tube, telescopic wire hose, and scraper. This allows for efficient handling of agglomerates of varying heights within the crucible, improving crucible retrieval efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is the front view of the utility model;

[0018] Figure 3 for Figure 1 Schematic diagram at point A in the middle;

[0019] Figure 4 This is a partial schematic diagram of the height control assembly of the utility model;

[0020] In the figure: 1 is a scraper, 2 is a fixed material transfer pipe, 3 is a deep groove ball bearing, 4 is a hopper, 5 is a rotating material transfer pipe, 6 is a steel wire telescopic hose, 7 is a worm gear, 8 is a worm shaft, 9 is a first motor, 10 is a coupling, 11 is a tightening rod, 12 is a movable disk, 13 is a compression spring, 14 is a tightening rod nut, and 15 is a second motor. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0023] like Figures 1 to 4 As shown, a negative pressure material taking device for graphite crucible includes a scraper 1, a fixed material transfer tube 2, a hopper 4 and a rotating material transfer tube 5. The scraper 1 adopts a fan-shaped structure and is a hollow structure. A suction port is provided on the side wall of the scraper 1. A steel wire telescopic hose 6 is connected to the top of the scraper 1. The steel wire telescopic hose 6 is connected to the scraper 1. The top of the steel wire telescopic hose 6 is connected to the rotating material transfer tube 5. The top of the rotating material transfer tube 5 is connected to the fixed material transfer tube 2. The end of the fixed material transfer tube 2 away from the rotating material transfer tube 5 is connected to the hopper 4.

[0024] Preferably, the bottom edge of the scraper 1 is provided with a sloped cutting edge.

[0025] Preferably, the fixed feed pipe 2 and the rotating feed pipe 5 are connected by a deep groove ball bearing 3. This reduces wear on the contact points caused by direct contact, and the replacement balls are inexpensive. The addition of lubricating oil protects the balls and dissipates some of the heat generated by friction. The lubricating oil level must be sufficient to cover the fixed feed pipe 2 to a certain distance, acting as an oil seal and ensuring that during negative pressure operation, the gas in the pipe does not communicate with the outside world, which could cause the negative pressure operation to fail.

[0026] Preferably, a rotation control component is provided on the rotating material transfer tube 5 .

[0027] Preferably, the rotation control component includes a worm gear 7, a worm shaft 8 and a first motor 9. The worm gear 7 is coaxially arranged on the outside of the rotating material transfer tube 5. The worm shaft 8 is meshed with the worm gear 7. The worm shaft 8 is connected to the first motor 9. The worm shaft 8 is connected to the output shaft of the first motor 9 through a coupling 10.

[0028] Preferably, a height control assembly is provided between the rotating material transfer tube 5 and the scraper 1. The height control assembly includes an expansion rod 11, a movable disk 12, and a compression spring 13. The movable disk 12 is slidably mounted on the rotating material transfer tube 5. Three expansion rods 11 are provided. The bottom of the expansion rod 11 is fixed to the scraper 1 via a bearing, and the top of the expansion rod 11 extends through the movable disk 12. The top of the expansion rod 11 is connected to a second motor 15 via a bearing. The second motor 15 is fixed to the rotating material transfer tube 5. The movable disk 12 has a threaded hole that matches the expansion rod 11. The compression spring 13 is mounted on the outside of the steel wire telescopic hose 6, with its ends respectively mounted on the scraper 1 and the movable disk 12. The second motor 15 is controlled by a single-chip microcomputer. The motor's rotational direction and speed are controlled by the current and on / off time to achieve the purpose of controlling the height position of the movable disk 12 on the expansion rod 11. After the height is determined, the position of the movable disk 12 is fixed by the expansion rod nut 14.

[0029] Preferably, an expansion rod nut 14 is threadedly provided on the expansion rod 11 above the movable disk 12 .

[0030] Preferably, the maximum elongation of the steel wire telescopic hose 6 is 2500 mm.

[0031] Preparation: Check the equipment, align the fixed and rotating feed tubes 5, and place the scraper 1 into the crucible. Connect the fixed feed tube 2 to the waste bin. Set the expansion rod 11 to a preset height of 30 mm and tighten the expansion rod nut 14. Add lubricant to the deep groove ball bearing 3.

[0032] The first motor 9 and the negative pressure device are started to start collecting and processing the first layer of waste.

[0033] The first motor 9 and the negative pressure are paused, the second motor 15 rotates forward, and the height of the expansion rod 11 is set to 150 mm.

[0034] Start the first motor 9 and the negative pressure, and the second layer of products is collected.

[0035] The first motor 9 and negative pressure are paused, the pipeline is connected to the hopper 4, the second motor 15 rotates forward, the height of the expansion rod 11 is 1000mm, and the main product is collected and processed.

[0036] After the treatment is completed, the second motor 15 reverses, adjusting the expansion rod 11, and the scraper 1 rises. The end of the execution is removed and placed in the next crucible, and the operation of step 1 is repeated.

[0037] The above only describes in detail the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention, and various changes should be included in the scope of protection of the present invention.

Claims

1. A negative pressure material removal device for a graphite crucible, characterized in that: The scraper (1) comprises a scraper (1), a fixed material transfer pipe (2), a hopper (4) and a rotating material transfer pipe (5), wherein the scraper (1) adopts a fan-shaped structure and is a hollow structure. A material suction port is provided on the side wall of the scraper (1). The top of the scraper (1) is connected to a steel wire telescopic hose (6), the steel wire telescopic hose (6) is connected to the scraper (1), the top of the steel wire telescopic hose (6) is connected to the rotating material transfer pipe (5), the top of the rotating material transfer pipe (5) is connected to the fixed material transfer pipe (2), and the end of the fixed material transfer pipe (2) away from the rotating material transfer pipe (5) is connected to the hopper (4).

2. The negative pressure material discharging device for a graphite crucible according to claim 1, characterized in that: The bottom edge of the scraper (1) is provided with a sloped cutting edge.

3. The negative pressure material discharging device for a graphite crucible according to claim 1, characterized in that: The fixed material transfer pipe (2) and the rotating material transfer pipe (5) are connected via a deep groove ball bearing (3).

4. The negative pressure material taking device for a graphite crucible according to claim 3, characterized in that: The rotating material transfer tube (5) is provided with a rotation control component.

5. The negative pressure material taking device for a graphite crucible according to claim 4, characterized in that: The rotation control assembly includes a worm wheel (7), a worm shaft (8) and a first motor (9), wherein the worm wheel (7) is coaxially arranged outside the rotating material transfer tube (5), the worm shaft (8) is meshed with the worm wheel (7), the worm shaft (8) is connected to the first motor (9), and the worm shaft (8) is connected to the output shaft of the first motor (9) via a coupling (10).

6. The negative pressure material taking device for a graphite crucible according to claim 1, characterized in that: A height control assembly is provided between the rotating material transfer tube (5) and the scraper (1), and the height control assembly includes an expansion rod (11), a movable disk (12) and a compression spring (13). The movable disk (12) is slidably provided on the rotating material transfer tube (5). The expansion rod (11) is provided in three groups. The bottom of the expansion rod (11) is fixedly provided on the scraper (1) through a bearing. The top of the expansion rod (11) passes through the movable disk (12). The top of the expansion rod (11) is connected to a second motor (15) through a bearing. The second motor (15) is fixedly provided on the rotating material transfer tube (5). A threaded hole matching the expansion rod (11) is provided on the movable disk (12). The compression spring (13) is provided on the outside of the steel wire telescopic hose (6). The two ends of the compression spring (13) are respectively provided on the scraper (1) and the movable disk (12).

7. The negative pressure material taking device for a graphite crucible according to claim 6, characterized in that: An expansion rod nut (14) is threadedly provided on the expansion rod (11) above the movable disk (12).

8. The negative pressure material discharging device for a graphite crucible according to claim 1, characterized in that: The maximum elongation of the steel wire telescopic hose (6) is 2500 mm.

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