Anode rod shaping device

Abstract

The utility model relates to the technical field of aluminium electrolysis cell maintenance, concretely to an aluminium electrolysis cell aluminium outlet shaping device, including mobile chassis, rectangular support frame, U -shaped shaping die head, still including first drive mechanism and second drive mechanism, first drive mechanism is located on mobile chassis and is connected with support frame transmission to drive support frame vertical lift and rotate, second drive mechanism is located on support frame and is connected with shaping die head transmission to drive shaping die head moves along support frame length direction. The operator can drive crossbeam along the vertical stable sliding of rectangular support frame of mobile chassis through the rotation of the rotation seat of screw rod top end, and then drive rectangular support frame and U -shaped shaping die head synchronous lifting, ensure that the center of shaping die head can be accurately aligned with the aluminium outlet of different height. Compared with prior art's small range compensation, the height adjustment of the device is more flexible, the coverage is wider, and the device's versatility is improved without replacing the mold for different electrolytic cells.

Description

Technical Field

[0001] This utility model relates to the field of aluminum electrolysis cell repair technology, specifically to an aluminum electrolysis cell outlet shaping device. Background Technology

[0002] The aluminum outlet of an aluminum electrolysis cell is a core channel in the electrolytic aluminum production process, undertaking critical functions such as aluminum molten metal extraction and slag removal. Its shape accuracy and structural integrity directly determine the continuity and efficiency of electrolytic production. Under conditions of prolonged high temperatures (often exceeding 900℃ inside the cell), electrolyte erosion, and frequent mechanical operations (such as collisions with slag removal tools), the aluminum outlet is prone to problems such as irregular aperture, edge deformation, and overall tilting. Minor issues may lead to unstable aluminum molten metal extraction flow rates and obstructed slag removal; more serious issues may exacerbate the oxidation of anode carbon blocks near the outlet, causing carbon particles to fall into the electrolysis cell, increasing the amount of slag generated inside the cell, further affecting the thermal balance and stable operation of the electrolysis cell, and causing significant production disruptions.

[0003] To address the aforementioned issues, existing technologies have proposed improved solutions, such as the Chinese patent CN219464750U, "A Casting Mold for Aluminum Electrolysis Cell Outlet," which discloses a casting mold structure comprising a first push rod, a second push rod, a U-shaped arc plate, a fixed support, and a rotating wheel. The U-shaped arc plate covers the aluminum outlet and engages with the positioning rod using a clamp-shaped positioning latch, allowing the removal of the attached anode carbon block for convenient electrolyte extraction. The rotating wheel enables the entire device to move, and the sliding positioning group adjusts the distance between the base and the ground, thus solving to some extent the problems of complex traditional casting processes, high labor intensity for operators, and the risk of burns from close contact with high-temperature liquids.

[0004] However, the core design of the existing casting molds focuses on the casting and shaping of the aluminum outlet. In the reshaping and repair of deformed aluminum outlets, their structural design has certain limitations and cannot meet the actual reshaping needs. 1. Poor height adaptability: This mold relies on the sliding positioning group to adjust the base spacing, which can only achieve a small range of height compensation. It cannot adapt to the height difference of the aluminum outlet of different specifications of aluminum electrolytic cells (in actual production, the height difference between the aluminum outlet of different models of electrolytic cells and the ground can be more than 300mm). This makes it difficult for the forming parts to be accurately aligned with the center of the aluminum outlet, which directly affects the forming accuracy.

[0005] 2. Lack of angle adjustment function: When the aluminum outlet tilts by 5°-10° due to long-term stress, the U-shaped arc plate of the mold is designed with a fixed angle and cannot adaptively adjust with the tilt angle of the aluminum outlet. The arc plate does not fit tightly with the outer wall of the aluminum outlet, which easily leads to blind spots in the shaping process and makes it impossible to completely repair the deformed parts.

[0006] 3. Insufficient distance control precision: The push rod of this mold is only used to move the entire device and cannot adjust the distance between the forming part and the aluminum outlet. When the temperature at the aluminum outlet is high (e.g., exceeding 800℃ immediately after aluminum is tapped), operators find it difficult to maintain a safe operating distance and still face the risk of high-temperature burns; when the temperature decreases, the distance cannot be shortened to visually observe the forming effect, resulting in poor operational flexibility. 4. Insufficient operational stability: The mold is supported only by the rotating wheel and the base. During the shaping process, it is prone to displacement under the action of external forces (such as squeezing and collision during shaping). Additional personnel are required to assist in fixing it, which not only increases labor costs, but may also lead to deviations in the shaping effect due to unstable support.

[0007] In summary, existing technologies lack a dedicated device specifically designed for the reshaping and repair of deformed aluminum outlets. This makes it impossible to simultaneously meet the requirements of high flexibility, adaptive angle adjustment, precise distance control, and stable operation, resulting in low efficiency, poor results, and safety hazards in aluminum outlet reshaping operations. Therefore, developing a highly adaptable, safe, and precise aluminum electrolysis cell outlet reshaping device is crucial to solving current production problems. Utility Model Content

[0008] The purpose of this invention is to provide an aluminum electrolysis cell outlet shaping device to solve the problems mentioned in the prior art in the background section.

[0009] To achieve the above objectives, this utility model provides the following technical solution: an aluminum electrolysis cell outlet shaping device, comprising a movable base frame, a rectangular support frame, and a U-shaped shaping die head, and further comprising a first driving mechanism and a second driving mechanism; the first driving mechanism is mounted on the movable base frame and is drivenly connected to the support frame to drive the support frame to rise and fall vertically and rotate; the second driving mechanism is mounted on the support frame and is drivenly connected to the shaping die head to drive the shaping die head to move along the length direction of the support frame.

[0010] Furthermore, the mobile base frame includes a vertically arranged rectangular base frame and mobile wheels located at the bottom of the base frame.

[0011] Furthermore, the first drive mechanism includes a crossbeam vertically slidably connected to the base frame and a first screw rotatably connected to the base frame at one end; both ends of the crossbeam extend to the outside of the base frame and are hinged to the support frame, and the first screw is threadedly engaged with the crossbeam.

[0012] Furthermore, the second driving mechanism includes support seats on both sides of the support frame along its length, a second screw rotatably connected to one of the support seats at one end, and a rectangular moving frame slidably connected to the other support seat; the second screw is threadedly engaged with one side of the moving frame, the shaping die head is connected to the other side of the moving frame, and the support frame is also provided with a limiting seat that slidably engages with the moving frame, and the other end of the second screw is rotatably connected to the limiting seat.

[0013] Furthermore, both the base frame and one of the support seats are threaded with set screws that act on the first screw and the second screw.

[0014] Furthermore, a rotating seat is provided at the other end of both the first screw and the second screw.

[0015] Furthermore, a support wheel is rotatably connected to one side of the base frame via an L-shaped rod.

[0016] Furthermore, the support frame is also equipped with handrails.

[0017] Considering the limitations of the existing technology (CN219464750U) in the background section, and the technical solution of this aluminum electrolysis cell outlet shaping device, this device achieves comprehensive optimization for the shaping and repair of deformed aluminum outlets through targeted structural design. Specific beneficial effects are as follows: 1. Addressing the issue that existing casting molds, relying on sliding positioning assemblies, can only achieve limited height compensation and cannot adapt to the height differences of aluminum outlets in different electrolytic cells, this invention addresses this problem. In its first driving mechanism, a vertically arranged first screw threadedly engages with a crossbeam. By rotating the rotating seat at the top of the screw, the operator can drive the crossbeam to slide stably vertically along the rectangular base of the movable base frame. This, in turn, causes the rectangular support frame and the U-shaped forming mold head to rise and fall synchronously. The adjustment range covers 1.2-1.8m (adapting to the aluminum outlet heights of mainstream electrolytic cells), ensuring precise alignment of the forming mold head center with aluminum outlets of different heights. Compared to the limited compensation of existing technologies, this device offers more flexible height adjustment and a wider coverage range, eliminating the need to change molds for different electrolytic cells and improving the device's versatility.

[0018] 2. Existing casting molds use a fixed-angle U-shaped arc plate, which cannot accommodate the 5°-10° tilt of the aluminum outlet caused by long-term use. This results in a loose fit between the arc plate and the outer wall of the outlet, creating a blind spot in the forming process. This device solves this problem through a hinged structure between the crossbeam and the support frame. Both ends of the crossbeam extend to the outside of the base frame and are hinged to the support frame. The operator can hold the handle on the support frame and push it to rotate flexibly around the hinge axis, causing the U-shaped forming mold head to tilt synchronously until the inner contour of the mold is completely fitted with the outer wall of the tilted aluminum outlet. This design allows the mold angle to be adjusted in real time according to the tilt of the outlet, eliminating the fitting gap, removing the blind spot in existing technology, and ensuring that the deformed aluminum outlet can be restored to its standard shape.

[0019] 3. Existing casting mold push rods can only move the entire device, and cannot independently adjust the distance between the shaping component and the aluminum outlet. This makes it difficult for operators to maintain a safe distance in high-temperature environments and makes it impossible to closely observe the shaping effect in low-temperature environments. In the second drive mechanism of this device, a horizontally arranged second screw is threadedly engaged with a rectangular moving frame. The moving frame slides along the limit seat on the support frame. The operator can drive the moving frame to move the U-shaped shaping mold head horizontally along the length of the support frame by rotating the rotating seat at the end of the second screw. When the aluminum outlet temperature exceeds 800℃, the mold can be adjusted to the working position, and the operator can stand on the side of the handrail to maintain a safe distance of more than 1.5m to avoid high-temperature burns. When the temperature drops below 500℃, the distance between the mold and the aluminum outlet can be shortened, making it easier to directly observe the shaping effect, thus balancing safety and operational convenience.

[0020] 4. Existing casting molds are supported only by wheels and a base, making them prone to shifting under external forces during operation. This necessitates additional personnel for fixation, increasing labor costs and affecting shaping accuracy. This device improves stability through a multi-support structure and locking design. Firstly, the bottom of the mobile base is equipped with moving wheels with braking function. An L-shaped rod connects to a support wheel on one side of the base, forming a three-point support structure with two moving wheels and one support wheel. When the device is near the electrolytic cell, the moving wheels can be locked, and the support wheel's contact with the ground further prevents tilting due to unilateral force. Secondly, threaded set screws are connected to the top of the base and the support seat of the second drive mechanism. After the first and second screws are adjusted to their positions, tightening the set screws secures the screws, preventing them from rotating on their own due to vibration and causing mold position shift during operation. This design eliminates the need for additional personnel for fixation, allowing a single person to perform stable operation, reducing labor costs and avoiding shaping accuracy deviations caused by unstable support.

[0021] 5. Existing casting molds require two operators (one to hold the mold and the other to adjust the supports), resulting in high labor intensity. This device simplifies operation through an integrated adjustment structure. Height adjustment (first screw rotating seat), angle adjustment (handrail push), and distance adjustment (second screw rotating seat) all require no complicated tools and can be completed independently by a single person; the combination of the casters and handrails allows the device to be moved flexibly to the target electrolytic cell without the need for handling; reducing the labor intensity of operators and improving the efficiency of shaping operations.

[0022] In summary, this device addresses the core limitations of existing casting molds in aluminum outlet reshaping and repair scenarios. Through the design of the first drive mechanism, the second drive mechanism, and the stable support structure, it achieves comprehensive advantages such as high adaptability, adjustable angle, controllable distance, stability and safety, and convenient operation. It is suitable for the repair needs of deformed aluminum outlets in electrolytic aluminum production and is of great significance for ensuring the stable operation of electrolytic cells and improving production efficiency. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a rear view of the present invention.

[0024] In the diagram: 1. Movable base frame; 2. Support frame; 3. Shaping die head; 4. First drive mechanism; 5. Second drive mechanism; 6. Base frame; 7. Moving wheel; 8. Crossbeam; 9. First screw; 10. Support seat; 11. Second screw; 12. Movable frame; 13. Limit seat; 14. Ejector screw; 15. Rotating seat; 16. L-shaped rod; 17. Support wheel; 18. Handrail. Detailed Implementation

[0025] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. Figure 1-2 As shown, this utility model discloses an aluminum electrolysis cell outlet shaping device, which mainly consists of a movable base frame 1, a rectangular support frame 2, a U-shaped shaping die head 3, a first driving mechanism 4, and a second driving mechanism 5. It is also equipped with auxiliary components such as a set screw 14, a rotating seat 15, a support wheel 17, and a handle 18. The device aims to solve the problem of inconvenient operation in existing aluminum electrolysis cell outlet shaping processes, as detailed below: The mobile base frame 1 is the basic load-bearing structure of the device, including a vertically arranged rectangular base frame 6 and two rotatably connected to the bottom of the base frame 6. The base frame 6 is made of high-strength steel and has a vertical rectangular frame structure with internal space reserved for the vertical sliding of the first drive mechanism 4. The rotatable wheels 7 are made of wear-resistant rubber and have a braking function, enabling the device to move flexibly on the electrolysis workshop floor and locking its position during operation to prevent deviation. In addition, a support wheel 17 is rotatably connected to one side of the base frame 6 via an L-shaped rod 16. The support wheel 17 is made of the same material as the rotatable wheels 7. When the device is close to the aluminum electrolysis cell, the support wheel 17 can support the ground, helping the mobile base frame 1 maintain horizontal stability and preventing the device from tilting due to unilateral force, thus providing a stable foundation for subsequent height and angle adjustments of the forming die head 3.

[0026] The first drive mechanism 4 is mounted on the base frame 6 and is used to drive the support frame 2 to achieve vertical lifting and angular rotation, thereby adjusting the height and tilt angle of the forming die head 3 to adapt to aluminum outlets of different heights and tilt angles. Specifically, it includes a crossbeam 8 and a first screw 9. The crossbeam 8 is a horizontally arranged rectangular steel rod that runs through the vertical frame of the base frame 6, with both ends extending to the outside of the base frame 6 and hinged to the inside of one side of the support frame 2 via hinge shafts. The crossbeam 8 can slide vertically along the inner wall of the base frame 6, and its sliding action directly drives the support frame 2 to rise and fall, thereby changing the height of the forming die head 3. When facing aluminum outlets of different specifications of aluminum electrolysis cells (e.g., some electrolysis cell outlets are 1.2m above the ground, and some are 1.5m above the ground), the operator can adjust the lifting height of the crossbeam 8 to align the center of the forming die head 3 with the center of the aluminum outlet. The first screw 9 is vertically mounted, with both ends rotatably connected to the upper and lower horizontal plates of the base frame 6 via bearings. The other end passes through the crossbeam 8 and forms a threaded engagement with the crossbeam 8. A circular rotating seat 15 is fixed to the top of the first screw 9. By rotating the rotating seat 15 (clockwise rotation lowers the crossbeam 8, counterclockwise rotation raises the crossbeam 8), the operator can drive the first screw 9 to rotate, thereby causing the crossbeam 8 to rise and fall vertically along the base frame 6. This ultimately achieves precise height adjustment of the support frame 2 to meet the adaptation requirements of aluminum outlets of different heights. At the same time, since the crossbeam 8 and the support frame 2 are movably connected via a hinge shaft, the support frame 2 can rotate around the hinge shaft. When the aluminum outlet tilts due to long-term use (e.g., tilting at 5° or 10°), the operator can hold the handle 18 and push the support frame 2, causing the shaping die head 3 to rotate synchronously until the inner contour of the shaping die head 3 fits against the outer wall of the tilted aluminum outlet, thus completing the angle adaptation.

[0027] The second drive mechanism 5 is installed along the length of the support frame 2 and is used to drive the U-shaped forming die head 3 to move along the length of the support frame 2 (i.e., towards / away from the aluminum outlet), thereby adjusting the distance between the forming die head 3 and the aluminum outlet. Simultaneously, it can adjust the safe distance between the operator and the aluminum outlet according to the temperature of the aluminum outlet. Specifically, it includes a support base 10, a second screw 11, a moving frame 12, and a limiting seat 13. Wherein: Two support bases 10 are fixed to the two ends of the support frame 2 along its length. One support base 10 is used to install the second screw 11, and the other support base 10 is used to provide sliding guidance for the movable frame 12. The second screw 11 is horizontally arranged, with one end rotatably connected to one of the support bases 10 via a bearing, and the other end passing through one side of the movable frame 12 and forming a threaded engagement with the movable frame 12. The other end is rotatably connected to the limiting seat 13 via a bearing. The limiting seat 13 is fixed in the middle of the support frame 2, and its inner side is provided with a sliding groove that matches the movable frame 12. The movable frame 12 can slide horizontally along the sliding groove of the limiting seat 13. The inner wall of the sliding groove is provided with a wear-resistant coating to reduce wear on the movable frame 12 during sliding and ensure the stability of distance adjustment. The other side of the movable frame 12 is fixedly connected to the U-shaped forming die head 3 (e.g., by welding or bolting). The outline of the U-shaped forming die head 3 matches the shape of the standard aluminum outlet (e.g., when the diameter of the aluminum outlet is 200mm, the arc diameter of the forming die head 3 is 200mm), and is used to shape the aluminum outlet. One end of the second screw 11 is also fixed with a rotating seat 15. When the operator rotates the rotating seat 15 (clockwise rotation moves the movable frame 12 closer to the aluminum outlet, and counterclockwise rotation moves the movable frame 12 away from the aluminum outlet), the second screw 11 can be driven to rotate, thereby causing the movable frame 12 to slide horizontally along the limiting seat 13, so as to achieve precise adjustment of the distance between the forming die head 3 and the aluminum outlet (adjustment range is 0-500mm); at the same time, this distance adjustment function can be used flexibly in combination with the temperature of the aluminum outlet. When the temperature at the aluminum outlet is high (e.g., exceeding 800℃), the operator can rotate the rotating seat 15 more to move the shaping die head 3 closer to the aluminum outlet to a suitable position. At this time, the operator can stand on the side of the handrail 18 away from the aluminum outlet (located at both ends of the support frame, respectively with the shaping die head) to avoid being burned by high temperature. When the temperature at the aluminum outlet is low (e.g., dropping below 500℃), the distance between the shaping die head 3 and the aluminum outlet can be appropriately shortened, allowing the operator to observe the shaping effect more intuitively and improve operating efficiency.

[0028] There are two set screws 14, which are threaded to the top crossbeam of the base frame 6 (corresponding to the first screw 9) and a support seat 10 (corresponding to the second screw 11), respectively. After the first screw 9 or the second screw 11 is adjusted to the correct position (such as the height, angle, and distance from the aluminum outlet of the forming mold head 3 are all suitable), tighten the set screws 14 to fix the screw in place and prevent it from rotating due to vibration during operation, thus ensuring the stability of the forming operation. The handle 18 is fixed to one end of the support frame 2 (near the rotating seat on the second screw). The operator can use the handle 18 to adjust the angle of the support frame 2 (in conjunction with the angle adjustment function of the first drive mechanism) or push the overall structure when the device moves. At the same time, the handle 18 also provides a stable grip point for the operator, avoiding the impact of device shaking on the adjustment accuracy during operation.

[0029] The specific working process of this device is as follows: 1. Device movement and positioning: The operator pushes the handle 18 and moves the device to the aluminum outlet of the target aluminum electrolysis cell by moving the wheels 7 at the bottom of the base frame 1. The position of the device is adjusted so that the forming die head 3 is roughly aligned with the aluminum outlet. Then the wheels 7 are locked and the support wheels 17 on one side of the base frame 6 are in contact with the ground to ensure that the device is level and stable. 2. Adjustment of the forming die head height: Based on the actual height of the aluminum outlet (which can be measured in advance with a tape measure or visually compared), the operator rotates the rotating seat 15 at the top of the first screw 9 to drive the first screw 9 to rotate, causing the crossbeam 8 to slide vertically along the base frame 6, thereby making the support frame 2 and the forming die head 3 rise and fall synchronously. If the aluminum outlet height is high, rotate the rotating seat 15 to raise the crossbeam 8; if the aluminum outlet height is low, rotate the rotating seat 15 in the opposite direction to lower the crossbeam 8, until the height of the forming die head 3 matches the height of the aluminum outlet. Then, tighten the set screw 14 on the top crossbeam of the base frame 6 to fix the position of the first screw 9. 3. Adjusting the angle of the forming die head: Observe whether there is any tilting at the aluminum outlet. If the aluminum outlet is tilted, the operator holds the handle 18 and pushes the support frame 2 to rotate around the hinge axis between the crossbeam 8 and the support frame 2, causing the forming die head 3 to tilt synchronously until the inner contour of the forming die head 3 fits against the outer wall of the tilted aluminum outlet, thus completing the angle adaptation. At this time, the operator can hold the handle 18 to keep the angle of the support frame 2 stable (no additional locking structure is required, because the reaction force after the forming die head 3 contacts the aluminum outlet during operation can help maintain the angle). 4. Adjustment of the distance between the forming die and the aluminum outlet: First, use a thermometer to measure the surface temperature of the aluminum outlet. If the temperature is high (e.g., >800℃), the operator rotates the rotating seat 15 at the end of the second screw 11 to drive the second screw 11 to rotate, which in turn moves the moving frame 12 and the forming die 3 closer to the aluminum outlet until the distance between the forming die 3 and the aluminum outlet meets the shaping requirements (e.g., 100mm). At this time, the operator stands on the side of the handrail 18 and maintains a safe distance (e.g., >1.5m) from the aluminum outlet. If the temperature is low (e.g., <500℃), the rotating seat 15 can be rotated in the opposite direction to shorten the distance between the forming die 3 and the aluminum outlet (e.g., 50mm) to facilitate observation of the shaping effect. After adjustment, tighten the set screw 14 on the support seat 10 to fix the position of the second screw 11. 5. Aluminum outlet shaping operation: After confirming that the height, angle and distance of the shaping mold head 3 are appropriate, the operator uses the handrail 18 to adjust the position of the fine adjustment device to make the shaping mold head 3 fit with the aluminum outlet, and shapes the deformed parts of the aluminum outlet until the aluminum outlet is restored to the standard shape. 6. Device reset and storage: After the shaping operation is completed, first loosen the two set screws 14, and rotate the rotating seat 15 of the first screw 9 and the second screw 11 in the opposite direction to make the shaping mold head 3 move away from the aluminum outlet and lower to the lowest height. Then unlock the braking function of the moving wheel 7, push the device to the designated storage position, and lock the moving wheel 7 to complete the operation.

Claims

1. A shaping device for the aluminum outlet of an aluminum electrolysis cell, comprising a movable base frame (1), a rectangular support frame (2), and a U-shaped shaping die head (3), characterized in that, It also includes a first drive mechanism (4) and a second drive mechanism (5); the first drive mechanism (4) is mounted on the movable base frame (1) and is connected to the support frame (2) in a transmission manner, so as to drive the support frame (2) to rise and fall vertically and rotate; the second drive mechanism (5) is mounted on the support frame (2) and is connected to the shaping mold head (3) in a transmission manner, so as to drive the shaping mold head (3) to move along the length direction of the support frame (2).

2. The shaping device as described in claim 1, characterized in that, The mobile base frame (1) includes a vertically arranged rectangular base frame (6) and mobile wheels (7) located at the bottom of the base frame (6).

3. The shaping device as described in claim 2, characterized in that, The first drive mechanism (4) includes a crossbeam (8) vertically slidably connected to the base frame (6) and a first screw (9) rotatably connected to the base frame (6) at one end; both ends of the crossbeam (8) extend to the outside of the base frame (6) and are hinged to the support frame (2), and the first screw (9) is threadedly engaged with the crossbeam (8).

4. The shaping device as described in claim 3, characterized in that, The second drive mechanism (5) includes support seats (10) on both sides of the support frame (2) along its length, a second screw (11) rotatably connected to one of the support seats (10) at one end, and a rectangular moving frame (12) slidably connected to the other support seat (10); the second screw (11) is threadedly engaged with one side of the moving frame (12), the shaping die head (3) is connected to the other side of the moving frame (12), and the support frame (2) is also provided with a limiting seat (13) slidably engaged with the moving frame (12), and the other end of the second screw (11) is rotatably connected to the limiting seat (13).

5. The shaping device as described in claim 4, characterized in that, The base frame (6) and one of the support seats (10) are threaded with set screws (14) that act on the first screw (9) and the second screw (11).

6. The shaping device as described in claim 4, characterized in that, The other end of the first screw (9) and the second screw (11) is provided with a rotating seat (15).

7. The shaping device as described in claim 2, characterized in that, A support wheel (17) is rotatably connected to one side of the base frame (6) via an L-shaped rod (16).

8. The shaping device as described in claim 3, characterized in that, The support frame (2) is also provided with a handrail (18).

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