Opening and closing sealing device for anode guide rod

Abstract

The utility model relates to an opening and closing sealing device for an anode guide rod, which relates to the field of electrolytic aluminum production and comprises an L-shaped steel plate, a rotating pin shaft, a horizontal cover plate and a sealing plate. According to the utility model, the two L-shaped steel plates surround the anode guide rod to form a C-shaped structure, the L-shaped steel plates rotate on the horizontal cover plate through the rotating pin shafts, and the contact ends are provided with chamfers which are matched with each other; and the sealing plate is detachably connected to the L-shaped steel plate and seals the surrounding gap around the anode guide rod. The movable sealing device is used for sealing the gap between the anode guide rod and the horizontal cover plate of the electrolytic cell, so that the friction between the sealing element and the guide rod is effectively reduced, the service life of the sealing element is prolonged, the space of the electrode changing operation gap between the horizontal cover plate and the side part of the anode guide rod is expanded, and the service life of the anode guide rod is prolonged. And the pole changing operation is convenient to implement, and the purposes of convenient operation and replacement are achieved while the sealing and heat preservation performance is achieved.

Description

An anode guide rod opening and closing sealing device Technical Field

[0001] This utility model relates to the field of electrolytic aluminum production, and in particular to an anode guide rod opening and closing sealing device. Background Technology

[0002] During electrolysis, the anode is continuously consumed, and a new anode needs to be replaced after it is depleted. Therefore, to facilitate the entry and exit of the anode guide rod, the horizontal cover plates on both sides of the aluminum electrolysis cell have C-shaped openings for installing the anode guide rod. The size of the square opening is larger than the size of the anode guide rod, resulting in a certain gap between the anode guide rod and the horizontal cover plate of the electrolysis cell.

[0003] In existing technologies, due to the gap between the anode guide rod and the horizontal cover plate of the electrolytic cell, the flue gas and dust generated during the electrolysis process diffuse outward through the gap, causing external environmental pollution and increasing the heat dissipation of the electrolytic cell, thereby increasing the consumption of alumina and fluoride salts. To reduce heat dissipation and the diffusion of dust and flue gas, the sealing device used in existing technologies is mainly a fixed seal, which involves setting a strip of flexible material along the periphery of the guide rod on the C-shaped opening, pressing the flexible material with a pressure strip, and fixing the pressure strip and flexible material to the horizontal cover plate with bolts.

[0004] However, during electrode switching and adjustment, the anode guide rod inevitably rubs and squeezes the flexible material and pressure strip, causing damage to the flexible material and affecting the sealing effect, requiring periodic replacement. However, since the pressure strip and flexible material are detachably connected to the C-shaped opening by bolts, the space required for replacement is reduced due to the device above the electrolytic cell that drives the anode guide rod to rotate, and materials are prone to falling into the electrolytic cell, requiring entry to retrieve them, resulting in low efficiency for flexible material replacement. Summary of the Invention

[0005] To facilitate the replacement of the flexible material on the sealing device between the anode guide rod and the horizontal cover plate of the electrolytic cell, this utility model provides an anode guide rod opening and closing sealing device.

[0006] This utility model provides an anode guide rod opening and closing sealing device, which adopts the following technical solution:

[0007] An anode guide rod opening and closing sealing device includes an L-shaped steel plate, a rotating pin, a horizontal cover plate, and a sealing plate. Two L-shaped steel plates are provided, forming a C-shaped structure surrounding the anode guide rod. The rotating pin is correspondingly provided on each of the two L-shaped steel plates, and the L-shaped steel plates rotate on the horizontal cover plate through the rotating pin. The contact ends of the two L-shaped steel plates have mutually fitting chamfers. The sealing plate is detachably connected to the L-shaped steel plate, surrounds the anode guide rod, and flexibly contacts the anode guide rod.

[0008] By adopting the above technical solution, before the anode guide rod enters, two L-shaped steel plates can be rotated to form a C-shaped space. Then, the anode guide rod is inserted between the two L-shaped steel plates, so that the sealing plate contacts the anode guide rod, sealing the gap and reducing the leakage of gas or heat, thus achieving a sealing effect.

[0009] When the sealing plates are damaged or detached, the two L-shaped steel plates can be rotated to one side using a rotating pin, and then the sealing plates can be replaced. This rotation of the two L-shaped steel plates expands the working clearance for replacing the sealing plates, improving convenience while maintaining sealing and insulation performance. The two sealing plates are not always fixed to the horizontal cover plate; they can be in different states. The sealing plates can be fixed at the C-shaped opening after the anode guide rod enters, sealing the gap between the anode guide rod and the horizontal cover plate. Alternatively, after the anode guide rod leaves the C-shaped opening, they can be opened outwards under the tension of a spring, facilitating the entry and exit of the anode guide rod through the C-shaped opening.

[0010] Optionally, it also includes a power unit, which includes an elastic element connected to the rotating end of the L-shaped steel plate, for driving the sealing plate on the L-shaped steel plate to press against the anode guide rod.

[0011] By adopting the above technical solution, when the anode guide rod is inserted into the electrolytic cell, the elastic element pulls the L-shaped steel plate close to the anode guide rod, so that the L-shaped steel plate drives the sealing plate to press against the anode guide rod, thereby improving the sealing effect. When performing electrode replacement or sealing plate replacement, after the anode guide rod is removed from the electrolytic cell, the elastic element drives the L-shaped steel plate to rotate, so that the L-shaped steel plate moves away from the C-shaped opening of the horizontal cover plate, making it easier to replace and maintain.

[0012] Optionally, the elastic element is a first spring, and the power device further includes a fixing pin. The fixing pin is provided on both the horizontal cover plate and the L-shaped steel plate. The two ends of the first spring correspond to the two fixing pins respectively, and the first spring is rotatably connected to the fixing pin.

[0013] By adopting the above technical solution, after the anode guide rod is removed from the electrolytic cell, the first spring pulls the L-shaped steel plate to open naturally. The first spring is elastic and can immediately drive the L-shaped steel plate to rotate to open naturally after the anode guide rod is separated from the L-shaped steel plate, reducing manual intervention, facilitating replacement and maintenance, and the first spring can be reused repeatedly. Furthermore, the setting of the fixing pin allows the first spring to be movably connected to the horizontal cover plate and the L-shaped steel plate, reducing the application of elastic force offset and reducing the torsional damage to the first spring.

[0014] Optionally, the L-shaped steel plate is provided with an adjustment mechanism, which includes an adjustment plate and an adjustment component. The adjustment plate is slidably connected to the L-shaped steel plate and is close to the anode guide rod. The sealing plate is detachably disposed on the adjustment plate. The adjustment component is disposed on the L-shaped steel plate and is connected to the adjustment plate. The adjustment component is used to drive the adjustment plate closer to the anode guide rod.

[0015] By adopting the above technical solution, when the sealing plate is worn due to collision or friction during the electrode switching or rotation process, the adjusting component can push the adjusting plate to continuously approach the anode guide rod, so that the sealing plate continues to press against the anode guide rod, ensuring the sealing effect, avoiding leakage of flue gas and dust generated during the production process, while improving the service life of the sealing plate, reducing the frequency of sealing plate replacement, and reducing costs.

[0016] Optionally, the adjustment assembly includes a second spring disposed on the L-shaped steel plate, with one end of the second spring away from the L-shaped steel plate connected to the adjustment plate, and the second spring pushing the adjustment plate closer to the anode guide rod.

[0017] By adopting the above technical solution, when the sealing plate is worn, the second spring causes the sealing plate to automatically press against the anode guide rod. Since the operating space below the horizontal cover is limited and there are many live electrical facilities, there is inconvenience in operation and the risk of electric shock to workers. The automatic adjustment by the spring reduces manual intervention and lowers the risk. In addition, the spring can be reused and has a long service life.

[0018] Optionally, the adjustment assembly further includes a limiting plate and a limiting bolt. The limiting plate is disposed on the L-shaped steel plate, and the limiting bolt is threadedly connected to the limiting plate. The limiting bolt is located on the side of the adjustment plate away from the anode guide rod, and the limiting bolt is used to limit the movement stroke of the adjustment plate.

[0019] By adopting the above technical solution, when the anode guide rod is being replaced, the limiting bolt can restrict the movement range of the adjusting plate, protect the performance of the second spring, avoid plastic deformation affecting its use, and at the same time ensure the sealing effect between the sealing plate and the anode guide rod.

[0020] Optionally, a limiting block is provided above the L-shaped steel plate. The limiting block is an elastic device. When the anode guide rod is working in the electrolytic cell, the limiting block is installed at the joint of the two L-shaped steel plates to limit the displacement of the L-shaped steel plate.

[0021] By adopting the above technical solution, when the anode guide rod vibrates during operation, the limiting block can fix the position of the L-shaped steel plate to prevent it from being displaced and affecting the sealing effect; when the anode guide rod is changing poles, the limiting block retracts to avoid affecting the rotation of the L-shaped steel plate.

[0022] In summary, this utility model has at least one of the following beneficial technical effects:

[0023] 1. The original design was a fixed component, which was prone to wear and damage under the impact and friction of the anode guide rod during electrode changing operations. After innovation and improvement, a movable sealing device is used to seal the gap between the anode guide rod and the horizontal cover plate of the electrolytic cell, which effectively reduces the friction between the seal and the guide rod and improves the service life of the seal.

[0024] 2. Improve the reliability of the sealing performance of the anode guide rod, reduce heat loss in the aluminum electrolysis cell, stabilize the thermal balance of the aluminum electrolysis cell, reduce the energy consumption of electrolytic aluminum, and reduce the emission of carbon dioxide gas.

[0025] 3. Expanding the space between the horizontal cover plate and the side of the anode guide rod facilitates the implementation of the electrode replacement operation, reduces the process cost of the electrode replacement operation, and achieves the purpose of convenient operation and replacement while having sealing and heat preservation performance. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0027] Figure 2 is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0028] Figure 3 is a schematic diagram of the adjustment mechanism of Embodiment 2 of this utility model.

[0029] Explanation of reference numerals in the attached drawings: 100, horizontal cover plate; 200, L-shaped steel plate; 210, slide groove; 300, rotating pin; 400, sealing plate; 500, power unit; 510, first spring; 520, fixing pin; 600, adjusting mechanism; 610, adjusting plate; 620, adjusting assembly; 621, second spring; 622, slider; 623, limiting plate; 624, limiting bolt; 800, limiting block. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to Figures 1 to 3.

[0031] This utility model discloses an anode guide rod opening and closing sealing structure.

[0032] Referring to Figure 1, the anode guide rod opening and closing sealing device mainly includes: a horizontal cover plate 100, two L-shaped steel plates 200, a sealing plate 400, a power unit 500, and a rotating pin 300; the two L-shaped steel plates 200 are spliced ​​into a C-shaped structure to form a through hole, and the anode guide rod passes through the through hole formed by the two L-shaped steel plates 200; the sealing plate 400 is installed on the inner side of the L-shaped steel plates 200, that is, on the side of the through hole formed by the two L-shaped steel plates 200, and is used to seal the gap between the L-shaped steel plates 200 and the anode guide rod; the two L-shaped steel plates 200 are respectively equipped with rotating pins 300. 00, and the L-shaped steel plate 200 rotates on the horizontal cover plate 100 via the rotating pin 300; the power device 500 is set on the horizontal cover plate 100 and connected to the L-shaped steel plate 200. The power device 500 drives the L-shaped steel plate 200 to rotate, so that the sealing plate 400 abuts against the anode guide rod; when installing the anode guide rod, the power device 500 drives the L-shaped steel plate 200 to form a C shape, and then the anode guide rod is inserted into the through hole formed by the L-shaped steel plate 200. Then the power device 500 drives the sealing plate 400 on the L-shaped steel plate 200 to abut against the anode guide rod.

[0033] The L-shaped steel plate 200 includes a vertical part and a horizontal part, both of which are long plates. The horizontal part is vertically fixed to one end of the vertical part, forming an L-shape. The horizontal part of one L-shaped steel plate 200 abuts against the horizontal part of another L-shaped steel plate 200, so that the two L-shaped steel plates 200 form a C-shaped structure. The length of one horizontal part is longer than the length of the other horizontal part, and the abutting ends of the two horizontal parts are chamfered to form two contacting slopes. The end of the slope away from the vertical part is inclined towards the shorter horizontal part.

[0034] A rotating hole is provided at the end of the horizontal part of the L-shaped steel plate 200 away from the vertical part. The rotating pin 300 is fixedly connected to the horizontal cover plate 100 and rotates in the rotating hole. The end of the rotating pin 300 away from the horizontal cover plate 100 forms a limiting part to reduce the distance between the L-shaped steel plate 200 and the horizontal cover plate 100.

[0035] The sealing plate 400 is made of insulating elastic material and is installed on the L-shaped steel plate 200 by detachable connection methods such as riveting, bolting, and bonding. It is set around the through hole. In this embodiment, the riveting method is used, and the sealing plate 400 is used to abut against the anode guide rod to seal the gap.

[0036] The power unit 500 is provided with two sets of springs corresponding to two L-shaped steel plates 200 respectively. The power unit 500 includes a first spring 510 and two fixing pins 520. One fixing pin 520 is fixedly connected to the vertical part of the L-shaped steel plate 200 and is located on the side of the vertical part away from the through hole. The other fixing pin 520 is fixedly connected to the horizontal cover plate 100, forming a triangular structure with the rotating pin 300, and is higher than the height of the fixing pin 520 set on the vertical part. In this embodiment, it is located between the rotating pin 300 and the fixing pin 520 fixed on the vertical part. The first spring 510 is sleeved on both fixing pins 520. The end of the first spring 510 is rotatably connected to the fixing pin 520. The first spring 510 has the potential to drive the L-shaped steel plate 200 to rotate and press against the anode guide rod, and is used to pull the L-shaped steel plate 200 to rotate so that it opens naturally.

[0037] The implementation principle of Embodiment 1 of this utility model is as follows:

[0038] When the anode guide rod is in the electrolytic cell, the first spring 510 is in a tensioned state, and the two L-shaped steel plates 200 are spliced ​​into a C-shape to ensure the sealing of the electrolysis process; when the device is in the electrode switching operation state, the first spring 510 is in a contracted state, pulling the two L-shaped steel plates 200 to rotate into an open state, which facilitates the entry and exit of the anode guide rod and reduces friction and collision.

[0039] Specifically, in the prior art, the anode guide rod is inserted into the electrolytic cell using a flipping structure. When the anode guide rod is installed, it first moves to the through hole and abuts against the L-shaped steel plate 200. As the anode guide rod rotates, it overcomes the tension of the first spring 510, causing the two L-shaped steel plates 200 to combine to form a C-shaped structure. When the anode guide rod is placed in the electrolytic cell, the elastic force of the first spring 510 is continuously released, causing the sealing plate 400 on the L-shaped steel plate 200 to press against the anode guide rod.

[0040] Example 2: Referring to Figures 2 and 3, the difference between this example and Example 1 is that the L-shaped steel plate 200 is provided with an adjustment mechanism 600 and a limiting block 800. The adjustment mechanism 600 includes an adjustment plate 610 and an adjustment assembly 620. The adjustment assembly 620 includes a second spring 621, a slider 622, a limiting plate 623, and a limiting bolt 624. Slide grooves 210 are provided on both the vertical and horizontal portions of the two L-shaped steel plates 200. The slide grooves 210 on the vertical portions are horizontally opened and extend towards the through hole, while the slide grooves 210 on the horizontal portions are vertically opened and extend towards the through hole. The slider 622 is slidably connected in the groove 210. The adjusting plate 610 is fixedly connected to the slider 622, and the adjusting plate 610 is in contact with the L-shaped steel plate 200. The sealing plate 400 is detachably connected to the adjusting plate 610. The detachable connection method is the same as in Embodiment 1. The second spring 621 is located in the groove 210. One end is connected to the bottom of the groove 210, and the other end is connected to the slider 622. It is always in a pressed state, pushing the adjusting plate 610 close to the anode guide rod, so that the sealing plate 400 fixed on the adjusting plate 610 is always in close contact with the anode guide rod, thereby achieving a sealing effect. A limiting plate 623 is fixedly connected to the vertical part of the L-shaped steel plate 200. The limiting plate 623 is located on the side of the adjusting plate 610 away from the C-shaped through hole. A limiting bolt 624 is threadedly connected to the limiting plate 623. The end of the limiting bolt 624 can abut against the adjusting plate 610 to limit the end of the adjusting plate 610 away from the through hole, thereby limiting the movement stroke of the adjusting plate 610. A slot is provided on the horizontal cover plate 100. The slot is located on the side away from the through hole of the L-shaped steel plate 200. The opening position of the slot corresponds to the abutment position of the two horizontal parts. The limiting block 800 slides vertically in the slot on the horizontal cover plate 100, or the limiting block 800 is inserted into the slot. In this embodiment, the limiting block 800 slides in the slot, which facilitates the hiding and sliding out of the limiting block 800. The limiting block 800 can abut against the horizontal part to limit the displacement of the two L-shaped steel plates 200.

[0041] In other embodiments, the limiting bolt 624 may extend into the groove 210 and abut against the end of the second spring 621 to adjust the compression of the second spring 621.

[0042] The implementation principle of Embodiment 2 of this utility model is as follows: During the adjustment process, the second spring 621 always pushes the adjustment plate 610 close to the anode guide rod. The limiting bolt 624 is threadedly connected to the limiting plate 623, which limits the movement stroke of the adjustment plate 610 and reduces the damage to the second spring 621 caused by excessive movement stroke of the adjustment plate 610 due to the installation shaking of the anode guide rod. When the anode guide rod is located in the electrolytic cell, the limiting block 800 abuts against the L-shaped steel plate 200, which limits the displacement of the two L-shaped steel plates 200.

[0043] In summary, the anode guide rod opening and closing sealing plate 400 in this application uses a movable sealing device to seal the gap between the anode guide rod and the horizontal cover plate 100 of the electrolytic cell, effectively reducing friction between the sealing element and the guide rod and improving the service life of the sealing element. This improves the reliability of the anode guide rod's sealing performance, reduces heat loss from the aluminum electrolytic cell, stabilizes the thermal balance of the aluminum electrolytic cell, reduces energy consumption for aluminum electrolysis, and reduces carbon dioxide emissions. It also expands the space between the horizontal cover plate 100 and the side of the anode guide rod for electrode replacement operations, facilitating the implementation of electrode replacement operations, reducing process costs, and achieving convenient operation and replacement while maintaining sealing and heat insulation performance.

[0044] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. An anode guide rod opening and closing sealing device, characterized in that: The device includes a horizontal cover plate (100), an L-shaped steel plate (200), a rotating pin (300), and a sealing plate (400). Two L-shaped steel plates (200) are provided, and the two L-shaped steel plates (200) form a C-shaped structure surrounding the anode guide rod. The rotating pin (300) is provided on each of the two L-shaped steel plates (200), and the L-shaped steel plates (200) rotate on the horizontal cover plate (100) through the rotating pin (300). The contact ends of the two L-shaped steel plates (200) are provided with mutually fitting chamfers. The sealing plate (400) is detachably connected to the L-shaped steel plate (200), and is arranged around the anode guide rod and flexibly contacts the anode guide rod.

2. The anode guide rod opening and closing sealing device according to claim 1, characterized in that: The device includes a power unit (500), which includes an elastic element connected to the rotating end of the L-shaped steel plate (200) for driving the sealing plate (400) on the L-shaped steel plate (200) to press against the anode guide rod.

3. The anode guide rod opening and closing sealing device according to claim 2, characterized in that: The elastic element is a first spring (510), and the power device (500) also includes a fixing pin (520). The fixing pin (520) is provided on both the horizontal cover plate (100) and the L-shaped steel plate (200). The two ends of the first spring (510) correspond to the two fixing pins (520) respectively, and the first spring (510) is rotatably connected to the fixing pin (520).

4. The anode guide rod opening and closing sealing device according to claim 1, characterized in that: An adjustment mechanism (600) is provided on the L-shaped steel plate (200). The adjustment mechanism (600) includes an adjustment plate (610) and an adjustment component (620). The adjustment plate (610) is slidably connected to the L-shaped steel plate (200) and is close to the anode guide rod. The sealing plate (400) is detachably disposed on the adjustment plate (610). The adjustment component (620) is disposed on the L-shaped steel plate (200) and is connected to the adjustment plate (610). The adjustment component (620) is used to drive the adjustment plate (610) closer to the anode guide rod.

5. The anode guide rod opening and closing sealing device according to claim 4, characterized in that: The adjustment assembly (620) includes a second spring (621) disposed on the L-shaped steel plate (200). The end of the second spring (621) away from the L-shaped steel plate (200) is connected to the adjustment plate (610). The second spring (621) pushes the adjustment plate (610) closer to the anode guide rod.

6. The anode guide rod opening and closing sealing device according to claim 4 or 5, characterized in that: The adjustment assembly (620) further includes a limiting plate (623) and a limiting bolt (624). The limiting plate (623) is disposed on the L-shaped steel plate (200). The limiting bolt (624) is threadedly connected to the limiting plate (623) and is located on the side of the adjustment plate (610) away from the anode guide rod. The limiting bolt (624) is used to limit the movement stroke of the adjustment plate (610).

7. The anode guide rod opening and closing sealing device according to claim 1, characterized in that: A limiting block (800) is provided above the L-shaped steel plate (200). When the anode guide rod is working in the electrolytic cell, the limiting block (800) is installed at the joint of the two L-shaped steel plates (200) to limit the displacement of the L-shaped steel plate (200).

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