A kind of impregnation equipment for graphite electrode production
By using a buffer to clamp the graphite electrode and slowly lower it into the impregnation tank, the problem of the part being submerged in asphalt during the impregnation process, which affects efficiency, was solved, thus achieving efficient graphite electrode production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BAOFENG COUNTY JIESHI CARBON MATERIAL
- Filing Date
- 2023-12-25
- Publication Date
- 2026-07-21
AI Technical Summary
In the current graphite electrode production process, components such as the support plate of the impregnation mechanism are submerged in asphalt, which affects production efficiency.
A buffer is used to clamp the graphite electrode, which is then slowly lowered into the impregnation tank by a lifting mechanism to avoid damage from impacts. After impregnation, the buffer is quickly removed to reduce contact with asphalt.
It improved production efficiency, reduced cleaning work, avoided unnecessary contact with asphalt on non-essential parts, and enhanced the efficiency of equipment use.
Smart Images
Figure CN117696362B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of impregnation equipment technology, and more particularly to an impregnation equipment for the production of graphite electrodes. Background Technology
[0002] Graphite electrodes are high-temperature resistant graphite conductive materials produced by using petroleum coke and needle coke as aggregates and coal tar pitch as binders, through a series of processes including kneading, molding, calcination, impregnation, graphitization, and machining. During the impregnation process, the graphite electrode is placed in an impregnation tank. As the graphite falls freely into the tank, the bottom of the electrode is impacted and damaged. (Refer to patent number: CN201920097666.1).
[0003] To address the aforementioned issues, Chinese utility model patent document CN219816824U provides an impregnation mechanism for the production of graphite electrodes. In this utility model, before placing the graphite electrode in the impregnation tank, a support plate is raised to be close to the guide plate. Then, the graphite electrode is placed on the support plate through a circular hole. The graphite electrode slowly contacts the support plate, preventing the graphite electrode from falling onto the support plate after a certain distance and impacting the support plate, thus avoiding damage to the bottom of the graphite electrode.
[0004] However, this solution has the following drawbacks: the guide plate, pneumatic cylinder, support plate, linkage block and other structures are installed inside the impregnation tank. During the impregnation process, the graphite electrode needs to be submerged in impregnation bitumen. That is, the above-mentioned components need to be submerged in impregnation bitumen. Impregnation bitumen is a liquid product with high viscosity, which means that the above-mentioned components need to be cleaned again after each impregnation operation before they can be used again, which affects production efficiency. Summary of the Invention
[0005] The purpose of this invention is to solve the problem that components such as the support plate of the impregnation mechanism used in the production of graphite electrodes in the prior art are submerged in asphalt during impregnation, which affects the production efficiency. Therefore, this invention proposes an impregnation device for the production of graphite electrodes.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: An impregnation device for producing graphite electrodes includes an impregnation tank with a lid hinged to the top. A buffer for clamping graphite electrodes is suspended inside the impregnation tank. The buffer includes a housing and an inner liner for clamping the graphite electrodes is disposed inside the housing.
[0007] Furthermore, the outer shell has a ring structure, and an inner liner groove with an inward opening is formed on the inner wall of the outer shell. The cross-section of the inner liner groove is C-shaped, and a hollow ring-shaped inner liner is provided inside the inner liner groove. The small diameter of the inner liner is the same as the diameter of the inner liner groove. The inner liner has an elastic structure, and the inner liner is connected to the external air pump through a second connecting pipe.
[0008] Furthermore, the outer shell is a rigid structure, and the outer wall of the outer shell and the inner wall of the impregnation tank are sealed by a gap.
[0009] Furthermore, the outer wall of the outer shell is in surface contact with the inner wall of the impregnation tank, allowing the outer shell to move along the axial direction of the impregnation tank.
[0010] Furthermore, a third pipe is provided on the outer casing, the third pipe penetrates the outer casing vertically, and the top of the third pipe is connected to an external air pump.
[0011] Furthermore, the top of the impregnation tank has a void area, the bottom of the impregnation tank has an impregnation area, the outer wall of the outer shell and the void area form a contact surface, and the bottom of the contact surface is located above the graphite electrode.
[0012] Furthermore, the depth of the impregnation zone is greater than the height of the graphite electrode, and a fourth pipe communicating with the interior of the impregnation zone is provided on the side wall of the impregnation tank. The impregnation zone is connected to the impregnation bitumen supply device through the fourth pipe.
[0013] Furthermore, a first through pipe is provided on the cover, the first through pipe penetrates the cover, and the first through pipe is connected to an external air pump.
[0014] Furthermore, a soft magnetic block is provided on the top of the outer casing, and the outer casing is electromagnetically connected to the lifting mechanism through the soft magnetic block.
[0015] Compared with the prior art, the present invention provides an impregnation device for the production of graphite electrodes, which has the following beneficial effects: This invention discloses an impregnation device for producing graphite electrodes. In use, a buffer clamps the graphite electrode, and then a lifting mechanism lifts the buffer. The graphite electrode and buffer are then placed together into the impregnation tank. The buffer's cushioning effect allows the graphite electrode to slowly descend to the bottom of the impregnation tank, preventing damage from impacts. The buffer is then lifted and removed by the lifting mechanism, preventing it from remaining in the impregnation tank. Compared to existing technologies, this device prevents the impregnating asphalt from contacting other unnecessary components during the impregnation process, reducing cleaning work and improving equipment production efficiency.
[0016] Other advantages, objectives and features of the invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be learned from practice of the invention. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram illustrating the effect of opening the cover according to the present invention; Figure 3 This is a three-dimensional schematic diagram of the buffer structure of the present invention; Figure 4 This is a schematic front view of the buffer structure of the present invention; Figure 5 This is a schematic cross-sectional view of the buffer structure of the present invention; Figure 6 for Figure 5 Schematic diagram of the structural explosion effect; Figure 7 for Figure 5 Structural front view schematic diagram; Figure 8 This is a schematic diagram illustrating the effect of installing graphite electrodes according to the present invention; Figure 9 This is a cross-sectional schematic diagram showing the effect of the buffer and graphite electrode working together according to the present invention; Figure 10 For this Figure 9 Enlarged schematic diagram of section A in the middle; Figure 11 This is a schematic diagram illustrating the effect of the graphite electrode descending to the bottom of the impregnation tank in this invention; Figure 12 For this Figure 11 Enlarged schematic diagram of part B in the middle.
[0018] In the picture: 1. Impregnation tank; 2. Cover; 3. First through pipe; 4. Buffer; 41. Soft magnetic block; 5. Outer shell; 6. Inner liner; 7. Second through pipe; 8. Third through pipe; 9. Inner liner groove; 10. Graphite electrode; 11. Empty area; 12. Impregnation area; 13. Contact surface. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0020] Example 1 Reference Figure 1-12The present invention discloses an impregnation device for producing graphite electrodes, comprising an impregnation tank 1, a cover 2 hinged to the top of the impregnation tank 1, and a buffer 4 for clamping graphite electrodes 10 suspended inside the impregnation tank 1. The buffer 4 includes a housing 5, and an inner liner 6 for clamping graphite electrodes 10 is provided inside the housing 5.
[0021] After the cover 2 is closed, a sealed structure is formed between it and the impregnation tank 1. The buffer 4 replaces the guide plate, support plate and other mechanisms in the prior art, and plays a buffering role in the process of the graphite electrode 10 entering the impregnation tank 1, so as to prevent the graphite electrode from falling freely.
[0022] The outer shell 5 has a ring structure. An inner liner groove 9 with an inward opening is provided on the inner wall of the outer shell 5. The cross-section of the inner liner groove 9 is C-shaped. A hollow ring-shaped inner liner 6 is provided inside the inner liner groove 9. The small diameter of the inner liner 6 is the same as the diameter of the inner liner groove 9. The inner liner 6 has an elastic structure. The inner liner 6 is connected to the external air pump through a second pipe 7.
[0023] The inner wall of the inner liner 9 is fixed to the inner liner 6 by adhesive bonding. The inner liner 6 is an elastic structure and can be made of materials such as rubber or elastic plastic. When gas is injected into the inner liner 6 by an external air pump, the inner liner 6 expands and squeezes the graphite electrode 10. The material size and structural strength of the inner liner 6 are selected as needed so that the inner liner 6 can clamp the graphite electrode 10 after being filled with high pressure. Then, the buffer is lifted by the outer shell 5 to lift the graphite electrode 10.
[0024] Specifically, such as Figure 10 As shown, when the inner liner 6 presses against the graphite electrode 10, the two are in surface contact.
[0025] The outer shell 5 is a rigid structure, and the outer wall of the outer shell 5 is sealed with a gap between it and the inner wall of the impregnation tank 1.
[0026] The outer shell 5 is made of steel, and the impregnation tank 1 itself is also made of steel. After the buffer 4 and the graphite electrode 10 are placed into the impregnation tank 1, the outer shell 5 and the inner wall of the impregnation tank 1 are sealed with a gap, so that the bottom of the buffer 4 and the impregnation tank 1 form a closed space. The buffer 4 and the graphite electrode 10 slide down automatically under the action of gravity, while continuously compressing the air in the impregnation tank 1. Relying on the air resistance, a resistance buffer is formed on the buffer 4 and the graphite electrode 10 to prevent the graphite electrode 10 from falling and being damaged quickly.
[0027] The outer wall of the outer shell 5 is in surface contact with the inner wall of the immersion tank 1, allowing the outer shell 5 to move along the axial direction of the immersion tank 1.
[0028] like Figure 3-7As shown, the outer wall of the outer shell 5 is also a vertical cylindrical structure, corresponding to the inner wall of the immersion tank 1, which facilitates the outer shell 5 to have a guiding function during the falling process and prevents the buffer 4 and graphite electrode 10 from swinging or tilting.
[0029] A third pipe 8 is provided on the outer casing 5. The third pipe 8 passes through the outer casing 5 in a vertical direction, and the top of the third pipe 8 is connected to an external air pump.
[0030] The top of the outer casing 5 is inlaid with a soft magnetic block 41, and the outer casing 5 is electromagnetically connected to the lifting mechanism through the soft magnetic block 41.
[0031] An electromagnet is installed at the working end of the lifting mechanism. The electromagnet attracts a soft magnetic block, thereby lifting the buffer 4. In this embodiment, after the lifting mechanism lifts the buffer 4 and the graphite electrode 10 and puts them into the impregnation tank 1, if it is calculated according to the actual situation that the remaining air in the impregnation tank 1 is insufficient to support the buffer 4 and the graphite electrode 10, then an external air pump is started to inject compressed air into the impregnation tank 1 through the third pipe 8 until the air in the impregnation tank 1 is sufficient to support the weight of the buffer 4 and the graphite electrode 10. Moreover, the third pipe 8 can also be equipped with a pressure relief valve. When the buffer 4 is compressed and stays stably in the suspended position inside the impregnation tank 1, the buffer air in the impregnation tank 1 can be slowly released through the pressure relief valve, so that the buffer 4 slowly falls to the position where the graphite electrode 10 touches the bottom. Then the air in the inner liner 6 is released to separate the inner liner 6 from the graphite electrode 10. Then the lifting device is used to take the buffer 4 out of the impregnation tank 1, and the graphite electrode 10 is stably put into the impregnation tank 1.
[0032] Example 2 Reference Figure 11-12 The present invention discloses an impregnation device for producing graphite electrodes. The difference between this embodiment and embodiment 1 is that an empty area 11 is provided at the top of the inside of the impregnation tank 1, an impregnation area 12 is provided at the bottom of the inside of the impregnation tank 1, and a contact surface 13 is formed between the outer wall of the outer shell 5 and the empty area 11. The bottom of the contact surface 13 is located above the graphite electrode 10.
[0033] like Figure 11 As shown, in this embodiment, the depth of the impregnation zone 12 is greater than the height of the graphite electrode 10. A contact surface 13 is formed between the upper part of the outer wall of the outer shell 5 and the inner wall of the empty zone 11. When the graphite electrode 10 falls to the bottom of the inner side of the impregnation tank 1, the contact surface 13 is located above the inner wall of the impregnation zone 12. In this case, after the impregnation bitumen is introduced into the impregnation zone 12 until the graphite electrode is submerged, normal production operations can be carried out, reducing the adhesion of the impregnation bitumen on the empty zone 11, thereby reducing cleaning work.
[0034] The impregnation tank 1 is provided with a fourth pipe that communicates with the interior of the impregnation zone 12. The impregnation zone 12 is connected to the impregnation asphalt supply device through the fourth pipe.
[0035] A valve is installed on the fourth pipe. When the graphite electrode 10 is in place, the buffer 4 is taken out, the cover 2 is put on, the valve on the fourth pipe is opened, and impregnating bitumen is poured into the impregnation zone 12.
[0036] A first pipe 3 is provided on the cover 2, the first pipe 3 penetrates the cover 2, and the first pipe 3 is connected to an external air pump.
[0037] After the cover 2 is closed, the external air pump is started, and the first pipe 3 is used to introduce high-pressure air into the empty area 11 to pressurize the impregnated asphalt and ensure the impregnation effect.
[0038] Example 3 The present invention provides an impregnation device for the production of graphite electrodes. The difference between this embodiment and Embodiment 1 is that the outer shell 5 is an elastic structure, and the outer wall size of the outer shell 5 is the same as the inner wall size of the impregnation tank 1.
[0039] In this embodiment, the outer shell 5, like the inner liner 6, is an elastomer. When high-pressure gas is filled into the inner liner 6, the outer shell 5 undergoes elastic deformation and expansion under the compression of the inner liner 6, increasing the friction between the outer shell 5 and the inner wall of the impregnation tank 1. Friction = pressure × coefficient of friction. The pressure comes from the expansion of the inner liner 6, while the coefficient of friction is related to the material and surface finish of the contacting object. Depending on the specific situation, the frictional resistance between the outer shell 5 and the impregnation tank 1 is made slightly less than the static friction between the inner liner 6 and the graphite electrode 10, thereby causing the buffer 4 and the graphite electrode 10 to fall slowly.
[0040] In this application, the first connecting pipe 3, the second connecting pipe 7, and the third connecting pipe 8 are connected to the output ends of the external air pump, and each is equipped with a pressure relief valve for separate control.
[0041] Working principle: In use, the buffer 4 is placed on the graphite electrode 10, and high-pressure gas is introduced into the inner tank 6 to squeeze and clamp the graphite electrode 10. Then, the buffer 4 and graphite electrode 10 are lifted by the lifting equipment and placed into the impregnation tank 1. A certain amount of high-pressure gas is introduced into the impregnation tank 1 through the third pipe 8. Then, the buffer 4 is released from the lifting equipment, and the graphite electrode 10 slowly falls under the buffering effect of the buffer 4. After the graphite electrode 10 reaches the bottom, the buffer 4 is lifted again by the lifting equipment, and the buffer 4 is taken out from the impregnation tank 1. The cover 2 is closed, and impregnation asphalt is introduced into the impregnation area 12 through the fourth pipe. High-pressure gas is then introduced into the empty area 11 through the first pipe 3.
[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. An impregnation apparatus for producing graphite electrodes, comprising an impregnation tank (1), wherein a cover (2) is hinged to the top of the impregnation tank (1), characterized in that, The impregnation tank (1) is equipped with a buffer (4) for clamping the graphite electrode (10). The buffer (4) includes a shell (5) and an inner liner (6) for clamping the graphite electrode (10) is provided inside the shell (5). The outer shell (5) is a ring structure. An inner liner groove (9) with an inward opening is provided on the inner wall of the outer shell (5). The cross-section of the inner liner groove (9) is C-shaped. A hollow ring-shaped inner liner (6) is provided inside the inner liner groove (9). The small diameter of the inner liner (6) is the same as the diameter of the inner liner groove (9). The inner liner (6) is an elastic structure. The inner liner (6) is connected to the external air pump through a second pipe (7). The outer shell (5) is a rigid structure, and the outer wall of the outer shell (5) and the inner wall of the impregnation tank (1) are sealed by a gap.
2. The impregnation equipment for producing graphite electrodes according to claim 1, characterized in that, The outer wall of the outer shell (5) is in surface contact with the inner wall of the immersion tank (1), so that the outer shell (5) moves along the axial direction of the immersion tank (1).
3. The impregnation equipment for producing graphite electrodes according to claim 2, characterized in that, A third pipe (8) is provided on the outer shell (5). The third pipe (8) penetrates the outer shell (5) in a vertical direction. The top of the third pipe (8) is connected to an external air pump.
4. The impregnation equipment for producing graphite electrodes according to claim 3, characterized in that, The top of the impregnation tank (1) has a void area (11), the bottom of the impregnation tank (1) has an impregnation area (12), the outer wall of the outer shell (5) and the void area (11) form a contact surface (13), and the bottom of the contact surface (13) is located above the graphite electrode (10).
5. The impregnation equipment for producing graphite electrodes according to claim 4, characterized in that, The depth of the impregnation zone (12) is greater than the height of the graphite electrode (10). A fourth pipe is provided on the side wall of the impregnation tank (1) to communicate with the interior of the impregnation zone (12). The impregnation zone (12) is connected to the impregnation asphalt supply device through the fourth pipe.
6. The impregnation equipment for producing graphite electrodes according to claim 5, characterized in that, The cover (2) is provided with a first through pipe (3), which penetrates the cover (2) and is connected to an external air pump.
7. The impregnation equipment for producing graphite electrodes according to claim 6, characterized in that, A soft magnetic block (41) is provided on the top of the outer shell (5), and the outer shell (5) is electromagnetically connected to the lifting mechanism through the soft magnetic block (41).