A graphite milling system

Abstract

The application discloses a graphite grinding system, which comprises a horizontally fixed outer cylinder body, a feed hopper and a first discharge pipe fixedly connected to one end of the outer cylinder body, and an air extractor connected to the first discharge pipe; an inner cylinder body coaxial with the outer cylinder body is arranged in the outer cylinder body and rotates around the same axis, and a first communication passage is arranged at one end of the inner cylinder body; a mounting shaft coaxial with the inner cylinder body is arranged in the inner cylinder body and rotates around the same axis, and a first spiral extending from one end to the other end of the inner cylinder body is fixedly connected to the mounting shaft; a fixed grinding cylinder is fixed in the outer cylinder body, and the fixed grinding cylinder rotates relative to the inner cylinder body and surrounds the outer cylinder body, and a grinding ring cavity is arranged between the fixed grinding cylinder and the inner cylinder body, the first communication passage communicates the inner cylinder body with the grinding ring cavity, and a second communication passage communicating the first discharge pipe with the grinding ring cavity is further arranged on the fixed grinding cylinder; the first communication passage comprises a plurality of first through holes, and the second communication passage comprises a plurality of second through holes with a smaller aperture than the first through holes. The application solves the problem that the overall efficiency cannot be improved due to the need for cleaning caused by blockage in the prior art.

Description

Technical Field

[0001] This invention relates to the technical field of special equipment for graphite processing, and in particular to a graphite grinding system. Background Technology

[0002] Graphite is typically ground into smaller particles using a grinding device during processing. This device generally consists of a fixed housing and grinding components housed within it. The grinding components are driven by a motor located outside the housing. The graphite to be ground (usually crushed into smaller particles by a crusher before grinding) is fed through an inlet on the housing and subjected to grinding (such as agitation, shearing, and crushing) by the grinding components until it becomes finer. It is then discharged outside the housing. In actual processing, to achieve even finer grinding, a filter screen is often installed at the discharge port of the housing. This increases the running time. During grinding, some graphite that reaches the required fineness is discharged through the filter screen. However, as operation continues, the filter screen may become clogged, necessitating a shutdown for cleaning and restarting. This intermittent operation further increases processing time and fails to improve overall efficiency. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this invention is to provide a graphite grinding system that solves the problem that the overall efficiency cannot be improved due to the need for cleaning caused by clogging in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A graphite grinding system comprising:

[0006] The outer cylinder is fixedly installed horizontally, with a feed hopper and a first discharge pipe fixedly connected to one end, and the first discharge pipe is connected to an exhaust fan.

[0007] The inner cylinder is set inside the outer cylinder with a coaxial centerline rotating. One end of the inner cylinder is connected to the feed hopper, and the other end is also provided with a first connecting channel.

[0008] A mounting shaft is set inside the inner cylinder with its center line rotating on its own axis. The mounting shaft is fixedly connected to a first spiral extending from one end of the inner cylinder to the other end.

[0009] A fixed grinding cylinder is fixed inside the outer cylinder. The fixed grinding cylinder rotates around the outer cylinder and a grinding ring cavity is provided between the two. A first connecting channel connects the inner cylinder and the grinding ring cavity. A second connecting channel is also provided on the fixed grinding cylinder, connecting the first discharge pipe and the grinding ring cavity.

[0010] The first connecting channel includes multiple first through holes, and the second connecting channel includes multiple second through holes with a diameter smaller than the first through holes.

[0011] In the above scheme, the material (graphite particles to be ground) is introduced into the inner cylinder from the feed hopper. As the mounting shaft rotates, the material gradually moves to the other end and is gradually ground during the process. At the other end, it passes through the first through hole into the grinding ring cavity for further grinding, and finally passes through the second through hole and is discharged through the discharge pipe. During the process, the discharge pipe is also connected to an exhaust fan, which can also draw the material to assist in its movement. Smaller particles move faster, while larger particles move slower. The material that has been ground to the required standard is discharged first, and it is not easy to cause blockages during the process. Therefore, there is no need to stop the machine for cleaning, which solves the problem in the existing technology that the overall efficiency may not be improved due to the need for cleaning caused by blockages.

[0012] Furthermore, a second spiral is fixed on the outer wall of the inner cylinder. The second spiral and the grinding ring cavity are located at opposite ends of the outer cylinder, with the second spiral close to the first discharge pipe.

[0013] Furthermore, a third spiral located within the grinding ring cavity is fixed on the inner cylinder.

[0014] Furthermore, the width of the grinding ring cavity gradually increases from one end near the first discharge pipe to the other end.

[0015] Furthermore, the first through hole is equidistantly arranged around the wider end of the grinding ring cavity, and the second through hole is equidistantly arranged around the narrower end of the grinding ring cavity.

[0016] Furthermore, the inner cylinder gradually decreases in size from one end near the feed hopper to the other.

[0017] Furthermore, the inner cylinder includes a moving grinding cylinder section with a gradually varying wall thickness, and a fixed grinding cylinder surrounds the moving grinding cylinder so that a grinding annular cavity is formed between the two. The wall thickness of the moving grinding cylinder section gradually increases from one end near the feed hopper to the other end.

[0018] Furthermore, the end of the inner cylinder facing away from the feed hopper is closed and extends rotatably out of the outer cylinder and is connected to a first drive motor that drives its rotation.

[0019] Furthermore, a fixed cylinder is fixed to the end of the outer cylinder away from the first drive motor, and the fixed cylinder is rotatably sleeved on the outer cylinder. One end of the mounting shaft rotates through the fixed cylinder and is connected to a second drive motor that drives its rotation. A pusher screw located inside the fixed cylinder is also fixed around the mounting shaft, and the feed hopper is fixed above the fixed cylinder.

[0020] Furthermore, the first discharge pipe is located at the top of the outer cylinder, and a second discharge pipe located directly below the first discharge pipe is also fixed on the outer cylinder.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The filter structure has been eliminated. The material moves under the operation of the first spiral and the exhaust fan, and is gradually ground up during the process. Smaller particles are ground up faster, while larger particles are ground up slower. The material that has been ground to the required standard is discharged first. The process is less prone to clogging, so there is no need to stop the machine for cleaning. This solves the problem in the existing technology where the overall efficiency could not be improved due to the need for cleaning caused by clogging. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0024] Figure 2 This embodiment Figure 1 Enlarged schematic diagram of a local structure at point A;

[0025] Figure 3 This embodiment Figure 1 Enlarged schematic diagram of the local structure at point B.

[0026] The reference numerals in the accompanying drawings include:

[0027] 1. Outer cylinder, 2. Fixed cylinder, 3. First discharge pipe, 4. Feed hopper, 5. Inner cylinder, 6. Mounting shaft, 7. First spiral, 8. First through hole, 9. Fixed grinding cylinder, 10. Grinding ring cavity, 11. Second through hole, 12. Second spiral, 13. Moving grinding cylinder section, 14. Third spiral, 15. Second discharge pipe, 16. Connecting shaft, 17. Pushing spiral. Detailed Implementation

[0028] The present invention will be further described in detail below through specific embodiments:

[0029] like Figure 1-3As shown, this solution provides a graphite grinding system, which includes a horizontally fixed outer cylinder 1. A fixed cylinder 2 and a first discharge pipe 3 are fixed at the same end of the outer cylinder 1. The first discharge pipe 3 is located at the top of the outer cylinder 1. A feed hopper 4, which communicates with the fixed cylinder 2, is also fixed on the fixed cylinder 2. An inner cylinder 5, which is coaxially rotated inside the outer cylinder 1 and has one end communicating with the fixed cylinder 2, is also provided. The material in the feed hopper 4 can enter the inner cylinder 5 through the fixed cylinder 2. An mounting shaft 6, which is coaxially rotated inside the inner cylinder 5, is fixed externally. A first spiral 7 extends from one end of the inner cylinder 5 to the other. When the mounting shaft 6 rotates, the first spiral 7 carries the material to the other end, gradually grinding it during the movement. Multiple first through holes 8 are also provided at the end of the inner cylinder 5 away from the fixed cylinder 2, forming a first connecting channel. A fixed grinding cylinder 9 is also fixed inside the outer cylinder 1, and the first connecting channel connects the fixed grinding cylinder 9 and the inner cylinder 5. This allows the material to enter the grinding annular cavity 10 formed by them. Simultaneously, the inner cylinder 5 is rotating, thus allowing the material to... The material is further ground in the grinding ring cavity 10. Multiple second through holes 11 are provided on the fixed grinding cylinder 9. The diameter of the second through holes 11 is smaller than that of the first through holes 8. These second through holes 11 form a second connecting channel and connect the grinding ring cavity 10 with the inner cylinder 1 on the other side. A second spiral 12 is fixed on the outer wall of the inner cylinder 5. Similar to the first spiral 7, the second spiral 12 can also carry the material to continue moving (the second spiral 12 and the first discharge pipe 3 are located on the same side of the fixed grinding cylinder 9). At the same time, it can also assist the material to pass through the second connecting channel and continue to move towards the first discharge pipe 3. Furthermore, the first discharge pipe 3 is also connected to an exhaust fan. The exhaust fan runs continuously during operation. This will make the material with smaller particles move relatively faster, while the larger materials move slower. In this way, the material that is discharged through the first discharge pipe 3 first is the material that has been ground to the standard. Moreover, it is not easy to cause blockage during the process. Therefore, there is no need to stop the machine for cleaning. This solves the problem in the prior art that the overall efficiency cannot be improved due to the need for cleaning due to blockage.

[0030] In further proposals, such as Figure 1-3As shown, the inner cylinder 5 includes a movable grinding cylinder section 13 that cooperates with the fixed grinding cylinder 9 to form a grinding annular cavity 10. A third spiral 14 is fixed on the outer wall of the movable grinding cylinder section 13. Multiple first through holes 8 are located at the end of the inner cylinder 5 away from the feed hopper 4, so that the material enters the grinding annular cavity 10 away from the feed hopper 4 and then moves to the other end with the third spiral 14. Multiple second through holes 11 are located at the end of the fixed grinding cylinder 9 near the feed hopper 4. The material passing through the grinding annular cavity 10 passes through the second through holes 11 to the outer cylinder 1 on the other side and continues to be ground by the third spiral 14. Driven by the first discharge pipe 3, the material moves towards the first discharge pipe 3 (with the exhaust fan running synchronously during the process). Finally, it is drawn away by the exhaust fan through the first discharge pipe 3 and then collected by a subsequent collection device (such as a bag dust collection system, cyclone separation system, etc.). Furthermore, a second discharge pipe 15 is fixed at the bottom of the outer cylinder 1, located directly below the first discharge pipe 3. During operation, the second discharge pipe 15 is in a closed state (with a valve installed on it). After operation, the remaining material can be discharged to the outside through the second discharge pipe 15 via the third spiral 14 and the exhaust fan.

[0031] like Figure 1-3 As shown, the first spiral 7, the second spiral 12, and the third spiral 14 in this scheme can all have gradually decreasing pitches, meaning they become smaller as the material moves along its path. This allows the grinding intensity on the material to gradually increase. In a further scheme, the inner cylinder 5 also has a variable diameter structure, meaning it gradually decreases in diameter from one end near the feed hopper 4 to the other. This, combined with the first spiral 7, makes the grinding intensity gradually increase. Meanwhile, the space between the outer cylinder 1 and the inner cylinder 5 at the position of the second spiral 12 gradually increases. With the help of the exhaust fan and the second spiral 12, this allows the material to move faster in this space (the material that has passed through the second through hole 11 is already of acceptable particle size). This makes this space relatively more spacious, which is beneficial for subsequent material to pass smoothly through the second through hole 11.

[0032] like Figure 1-3 As shown, the grinding annular cavity 10 is a widened structure. Specifically, the wall thickness of the moving grinding cylinder section 13 gradually increases from one end near the feed hopper 4 to the other end, while the corresponding stationary grinding cylinder 9 can gradually become thinner, making the end of the grinding annular cavity 10 near the feed hopper 4 narrower, so that the material is gradually ground during operation. Part of the second through hole 11 can be connected to the inner wall of the grinding annular cavity 10, while the other part is connected to the inner bottom surface, thereby preventing the material from being retained in the grinding annular cavity 10.

[0033] like Figure 1-3As shown, the inner cylinder 5 is closed at one end away from the feed hopper 4 and extends rotatably to the outside of the outer cylinder 1. It is connected to a first drive motor that drives its rotation via a connecting shaft 16. Thus, the inner cylinder 5 rotates via the first drive motor. The other end of the inner cylinder 5 is rotatably engaged with the fixed cylinder 2 (both ends of the inner cylinder 5 are rotatably engaged with the outer cylinder 1, i.e., they are separated and not directly connected). Specifically, the fixed cylinder 2 is rotatably sleeved on the inner cylinder 5. At the same time, the mounting shaft 6 also rotates through the fixed cylinder 2 and is connected to a second drive motor that drives its rotation. That is, the second drive motor drives the mounting shaft 6 to rotate. Furthermore, a pusher screw 17 extending from the inner cylinder 5 into the fixed cylinder 2 is fixed on the mounting shaft 6. The pusher screw 17 and the first screw 7 can be connected. Meanwhile, the feed hopper 4 is fixed above the fixed cylinder 2, so that the material introduced through the feed hopper 4 can enter the inner cylinder 5 more smoothly. In this scheme, the running direction of the first drive motor is sufficient to ensure that the material can move from the feed hopper 4 to the other end. The running direction of the second drive motor can be adjusted according to the specific situation. For example, it can provide a pull towards the first discharge pipe 3 for the material in the grinding ring cavity 10 and the outer cylinder 1, or provide a pull away from the first discharge pipe 3 for the material in the grinding ring cavity 10 and the outer cylinder 1. However, the operation of the exhaust fan in the whole process makes the overall material direction towards the first discharge pipe 3. The latter running mode can reduce the material movement speed, so that the material stays in the grinding ring cavity 10 for a longer time to be ground more thoroughly.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A graphite grinding system, characterized in that, include: The outer cylinder is fixedly installed horizontally, with a feed hopper and a first discharge pipe fixedly connected to one end, and the first discharge pipe is connected to an exhaust fan. The inner cylinder is set inside the outer cylinder with a coaxial centerline rotating on its own axis. One end of the inner cylinder is connected to the feed hopper, and the other end is also provided with a first connecting channel. A mounting shaft with a coaxial centerline is set inside the inner cylinder, and the mounting shaft is fixedly connected to a first spiral extending from one end of the inner cylinder to the other end. A fixed grinding cylinder is fixed inside the outer cylinder. The fixed grinding cylinder rotates around the outer cylinder and a grinding ring cavity is provided between the two. A first connecting channel connects the inner cylinder and the grinding ring cavity. A second connecting channel is also provided on the fixed grinding cylinder, connecting the first discharge pipe and the grinding ring cavity. The first connecting channel includes multiple first through holes, and the second connecting channel includes multiple second through holes with a diameter smaller than the first through holes.

2. The graphite grinding system as described in claim 1, characterized in that, A second spiral is also fixed on the outer wall of the inner cylinder. The second spiral and the grinding ring cavity are located at the two ends of the outer cylinder, and the second spiral is close to the first discharge pipe.

3. The graphite grinding system as described in claim 1, characterized in that, A third spiral located inside the grinding ring cavity is also fixed on the inner cylinder.

4. The graphite grinding system as described in claim 3, characterized in that, The width of the grinding ring cavity gradually increases from one end near the first discharge pipe to the other end.

5. The graphite grinding system as described in claim 4, characterized in that, The first through hole is equidistantly arranged around the wider end of the grinding ring cavity, and the second through hole is equidistantly arranged around the narrower end of the grinding ring cavity.

6. The graphite grinding system according to any one of claims 1-5, characterized in that, The inner cylinder gradually decreases in size from one end near the feed hopper to the other.

7. The graphite grinding system as described in claim 6, characterized in that, The inner cylinder includes a moving grinding cylinder section with a gradually varying wall thickness, and a fixed grinding cylinder surrounds the moving grinding cylinder so that a grinding annular cavity is formed between the two. The wall thickness of the moving grinding cylinder section gradually increases from one end near the feed hopper to the other end.

8. The graphite grinding system as described in claim 7, characterized in that, The inner cylinder is closed at the end opposite to the feed hopper and extends rotatably out of the outer cylinder, where it is connected to a first drive motor that drives its rotation.

9. The graphite grinding system as described in claim 8, characterized in that, The outer cylinder is fixed to a fixed cylinder at the end opposite to the first drive motor, and the fixed cylinder is rotatably sleeved on the outer cylinder. One end of the mounting shaft rotates through the fixed cylinder and is connected to a second drive motor that drives its rotation. A pusher screw located inside the fixed cylinder is also fixed around the mounting shaft. The feed hopper is fixed above the fixed cylinder.

10. The graphite grinding system as described in claim 1, characterized in that, The first discharge pipe is located at the top of the outer cylinder, and a second discharge pipe is also fixed on the outer cylinder, located directly below the first discharge pipe.

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