Winding sealing device for U-shaped port of prebaked aluminum smelting electrolytic cell

Abstract

The utility model provides a kind of winding sealing device for prebaked aluminium smelting electrolytic cell U-shaped mouth, belong to metallurgical equipment technical field. Including composite refractory fiber wire harness, the composite refractory fiber wire harness is wound and is attached on electrolytic cell upper cover on anode carbon block aluminum guide rod, to seal the gap formed between anode carbon block aluminum guide rod and electrolytic cell upper cover, electrolytic cell cover;The composite refractory fiber wire harness both ends are provided with engaging fixture, for clamping the both ends of the composite refractory fiber wire harness. To use, directly composite refractory fiber wire harness is wound to anode carbon block aluminum guide rod, so that composite refractory fiber wire harness covers on the gap formed between anode carbon block aluminum guide rod and electrolytic cell upper cover, electrolytic cell cover, effectively fill gap and uneven steel plate plane, avoid smoke to emit, to reach the effect of effective sealing, to improve the working environment of electrolytic workshop, ensure that environmental protection detection in electrolytic workshop meets the standard.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, specifically to a winding sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell. Background Technology

[0002] In the traditional prebaked electrolytic aluminum smelting process, when the anode carbon block aluminum guide rod is installed on both sides of the prebaked aluminum smelting electrolytic cell, three gaps are formed between the anode carbon block aluminum guide rod and the U-shaped opening of the electrolytic cell cover (e.g. Figure 1 As shown), that is, gaps A, gap B, and gap C; when the electrolytic cell cover is installed in place, a gap is formed between it and the aluminum guide rod of the anode carbon block (as shown). Figure 1 As shown in the diagram, these four gaps (D) are formed on a single plane around the aluminum guide rod of the anode carbon block. During the aluminum smelting process in the electrolytic cell, a large amount of flue gas leaks out from these gaps, causing severe flue gas pollution in the electrolysis workshop, failing to meet environmental protection standards, and increasing alumina consumption and fluoride consumption. Therefore, it is essential to seal the gaps formed between the aluminum guide rod of the anode carbon block and the electrolytic cell cover / cover.

[0003] The traditional method for sealing the gaps between the aluminum guide rod of the anode carbon block and the top cover / cover of the electrolytic cell involves placing flexible material around the aluminum guide rod and pressing it down with an insulating plate to cover the gap. However, in actual production, repeated installation and removal of the aluminum guide rod causes the steel plates on both sides of the U-shaped opening to deform to varying degrees after repeated impacts. This results in the steel plates on both sides of the U-shaped opening no longer being flat, and the insulating plate cannot completely cover the gap with the flexible material, leading to poor sealing. Secondly, the lower part of these gaps contains molten aluminum at high temperatures. Numerous aluminum busbars are installed in the equipment in front of and behind the workers, and for worker safety, work in this area is time-limited. The traditional sealing method is cumbersome and cannot effectively seal the gaps between the aluminum guide rod of the anode carbon block and the top cover / cover of the electrolytic cell in a short time, thus compromising worker safety. Summary of the Invention

[0004] In view of this, the present invention provides a spiral sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell, to solve the technical problems of deformation caused by repeated impacts of the steel plates on both sides of the U-shaped opening by the aluminum guide rod of the anode carbon block during the replacement of the anode carbon block; the insulated plate of the traditional sealing device pressing the flexible material cannot completely cover the gap, resulting in poor sealing effect; and the traditional sealing device is cumbersome to operate and cannot effectively seal the gap formed between the aluminum guide rod of the anode carbon block and the electrolytic cell cover and electrolytic cell cover in a short time, thus failing to ensure the safety of the workers.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A winding sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell includes a composite refractory fiber bundle. The composite refractory fiber bundle is wound around the aluminum guide rod of the anode carbon block and attached to the top cover of the electrolytic cell to seal the gap formed between the aluminum guide rod of the anode carbon block and the top cover and cover of the electrolytic cell. The composite refractory fiber bundle is provided with engaging clamps at both ends for clamping the two ends of the composite refractory fiber bundle.

[0007] Preferably, the composite refractory fiber bundle is composed of multiple twisted refractory fiber threads.

[0008] Preferably, the engaging clamp includes a first engaging clamp, a second engaging clamp, and a connector. The first engaging clamp and the second engaging clamp are installed on both sides of the end of the composite refractory fiber bundle. The connector is connected to the first engaging clamp and the second engaging clamp so that the first engaging clamp and the second engaging clamp clamp the composite refractory fiber bundle through the connector.

[0009] Preferably, the connector includes a screw and a nut, the first engagement clamp has a first countersunk hole, the second engagement clamp has a second countersunk hole, the nut is disposed in the first countersunk hole, the screw is threadedly connected to the nut and passes through the first countersunk hole into the second countersunk hole.

[0010] Preferably, the clamping surface of the first engaging clamp is provided with a first engaging rack, and the clamping surface of the second engaging clamp is provided with a second engaging rack, with the first engaging rack and the second engaging rack being arranged alternately.

[0011] Preferably, the composite refractory fiber bundle is provided with a movable pressure block.

[0012] Preferably, the winding form includes single-bundle winding, folded double-bundle winding, odd-numbered twist winding, and twisted spiral winding.

[0013] Preferably, the winding width of the composite refractory fiber bundle is greater than the width of the gap formed between the anode carbon block aluminum guide rod and the electrolytic cell cover and electrolytic cell shroud.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model discloses a winding sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell. In use, the composite refractory fiber bundle is directly wound onto the aluminum guide rod of the anode carbon block and attached to the electrolytic cell cover, thus covering the gap formed between the aluminum guide rod, the electrolytic cell cover, and the electrolytic cell shroud. Because the composite refractory fiber bundle is soft and easily deformable, it effectively fills gaps and uneven steel plate surfaces, preventing flue gas leakage and achieving effective sealing. This improves the working environment of the electrolytic workshop and ensures that environmental protection standards are met. After sealing, the engaging clamp is placed on the electrolytic cell cover or pressed onto the composite refractory fiber bundle to tightly seal the gap, further enhancing the sealing effect. When replacing the anode carbon block, the composite refractory fiber bundle is removed from the aluminum guide rod, preventing it from falling off or being damaged by friction and pressure, thus extending its service life. Meanwhile, the winding sealing device for the U-shaped opening of the electrolytic cell in prebaked aluminum smelting is inexpensive to manufacture and easy to operate, allowing workers to complete the sealing work in a short time, ensuring the safety of workers and effectively improving the efficiency of the sealing work. Attached Figure Description

[0016] Figure 1 This is a schematic diagram showing the fit between the electrolytic cell cover, the electrolytic cell shroud, and the aluminum guide rod of the anode carbon block in the production site.

[0017] Figure 2 This is a schematic diagram of the assembly of the spiral sealing device for the U-shaped opening of the electrolytic cell for prebaked aluminum smelting and the aluminum guide rod for the anode carbon block according to this utility model.

[0018] Figure 3 This is a schematic diagram of a spiral sealing device used in the U-shaped opening of an electrolytic cell for prebaked aluminum smelting.

[0019] Figure 4 for Figure 3 A cross-sectional view along the AA direction.

[0020] Figure 5 for Figure 3 A cross-sectional view along the BB direction.

[0021] Figure 6 for Figure 3 A magnified view of a portion of the image.

[0022] In the figure: Electrolytic cell cover 10, electrolytic cell cover 20, anode carbon block aluminum guide rod 30, composite refractory fiber bundle 40, refractory fiber twisted fine thread 41, meshing clamp 50, first meshing clamp 51, first countersunk hole 511, first meshing rack 512, second meshing clamp 52, second countersunk hole 521, second meshing rack 522, connector 53, screw 531, nut 532. Detailed Implementation

[0023] The technical solutions and effects of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Please refer to Figure 2 A winding sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell includes a composite refractory fiber bundle 40, which is wound around the aluminum guide rod 30 of the anode carbon block and attached to the upper cover 10 of the electrolytic cell to seal the gap formed between the aluminum guide rod 30 of the anode carbon block and the upper cover 10 and the electrolytic cell cover 20; the two ends of the composite refractory fiber bundle 40 are provided with engaging clamps 50 for clamping the two ends of the composite refractory fiber bundle 40.

[0025] This utility model discloses a winding sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell. In use, the composite refractory fiber bundle 40 is directly wound onto the aluminum guide rod 30 of the anode carbon block and attached to the electrolytic cell cover 10, so that the composite refractory fiber bundle 40 covers the gap formed between the aluminum guide rod 30 of the anode carbon block, the electrolytic cell cover 10, and the electrolytic cell shroud 20. Because the composite refractory fiber bundle 40 is soft and easily deformable, it can effectively fill gaps and uneven steel plate surfaces, preventing flue gas from escaping, thus achieving an effective sealing effect. This improves the working environment of the electrolysis workshop and ensures that environmental protection standards are met. After sealing, the engaging clamp 50 is placed on the electrolytic cell cover or pressed onto the composite refractory fiber bundle 40 to tightly seal the gap, further improving the sealing effect. When replacing the anode carbon block, the composite refractory fiber bundle 40 is detached from the aluminum guide rod 30 of the anode carbon block. This prevents the composite refractory fiber bundle 40 from falling off or being damaged by friction and compression from the aluminum guide rod 30, thus extending its service life. Simultaneously, the winding sealing device for the U-shaped opening of the prebaked aluminum smelting electrolytic cell of this invention is inexpensive to manufacture and simple to operate, allowing workers to complete the sealing work quickly, ensuring worker safety and effectively improving sealing efficiency.

[0026] Furthermore, please also refer to Figure 3 and Figure 6The composite refractory fiber bundle 40 is composed of multiple refractory fiber twisted threads 41. Both ends of the bundle 40 are clamped by engaging clamps 50, preventing the twisted threads 41 from scattering. When the bundle 40 is wound around the aluminum guide rod 30 of the anode carbon block, the twisted threads 41 above the gap will fill the gap and uneven steel plate surface under gravity, achieving optimal sealing. The twisted threads 41 are all made of high-temperature resistant, insulating non-metallic materials. The high-temperature molten aluminum in the electrolytic cell, through the heat radiation from the gap, will not burn the twisted threads 41, and it also prevents accidental short circuits caused by contact with surrounding aluminum busbars during sealing operations.

[0027] Further, please see Figure 4 The engaging clamp 50 includes a first engaging clamp 51, a second engaging clamp 52, and a connector 53. The first engaging clamp 51 and the second engaging clamp 52 are installed on both sides of the end of the composite refractory fiber bundle 40. The connector 53 is connected to the first engaging clamp 51 and the second engaging clamp 52 so that the first engaging clamp 51 and the second engaging clamp 52 clamp the composite refractory fiber bundle 40 through the connector 53. Since the composite refractory fiber bundle 40 is composed of multiple refractory fiber twisted threads 41, by placing one end of the composite refractory fiber bundle 40 between the first engaging clamp 51 and the second engaging clamp 52, and using the fastening connector 53, the first engaging clamp 51 and the second engaging clamp 52 clamp one end of the composite refractory fiber bundle 40; by placing the other end of the composite refractory fiber bundle 40 between another set of the first engaging clamp 51 and the second engaging clamp 52, and using another set of fastening connectors 53, the other end of the composite refractory fiber bundle 40 is clamped, thereby achieving the binding of multiple refractory fiber twisted threads 41. After binding, the composite refractory fiber bundle 40 is wound around the anode carbon block aluminum guide rod 30, so that the composite refractory fiber bundle 40 covers the gap formed between the anode carbon block aluminum guide rod 30 and the electrolytic cell cover 10 and the electrolytic cell shield 20. The first engaging clamp 51 and the second engaging clamp 52 are made of high-density insulating material. After winding, the engaging clamp 50 can be placed on the electrolytic cell cover 10 or the composite refractory fiber bundle 40 as a counterweight to ensure that the composite refractory fiber bundle 40 installed in the gaps is always in a good and effective sealed state when the electrolytic cell cover 10 is cleaned by blowing soot, disassembling or installing the electrolytic cell cover 20, etc.

[0028] Further, please see Figure 5The connector 53 includes a screw 531 and a nut 532. The first engaging clamp 51 has a first countersunk hole 511, and the second engaging clamp 52 has a second countersunk hole 521. The nut 532 is disposed in the first countersunk hole 511. The screw 531 is threadedly connected to the nut 532 and passes through the first countersunk hole 511 into the second countersunk hole 521. The first engaging clamp 51 and the second engaging clamp 52 have the first countersunk hole 511 and the second countersunk hole 512 respectively along the direction from the non-clamping surface to the clamping surface. The clamping surface is the surface of the engaging clamp that contacts the composite refractory fiber bundle 40, and the non-clamping surface is the surface opposite to the clamping surface. One end of the composite refractory fiber bundle 40 is inserted between the first engaging clamp 51 and the second engaging clamp 52, so that one end of the composite refractory fiber bundle 40 is located in the area formed by the first engaging clamp 51, the second engaging clamp 53 and the screw 531. Then the nut 532 is tightened so that the first engaging clamp 51 and the second engaging clamp 52 clamp the composite refractory fiber bundle 40, so as to prevent the multiple refractory fiber twisted threads 41 from scattering.

[0029] Further, please see Figure 4 The clamping surface of the first engaging clamp 51 is provided with a first engaging rack 512, and the clamping surface of the second engaging clamp 52 is provided with a second engaging rack 522. The first engaging rack 512 and the second engaging rack 522 are staggered to increase the friction between the engaging clamp and the composite refractory fiber bundle, prevent slippage when the engaging clamp is clamped, and ensure that multiple refractory fiber twisted threads 41 are clamped by the first engaging clamp 51 and the second engaging clamp 52, so as to avoid the multiple refractory fiber twisted threads 41 from falling apart and affecting the sealing effect.

[0030] Furthermore, the composite refractory fiber bundle 40 is provided with a movable pressure block. After the winding is completed, the pressure block can be pressed on a certain section of the composite refractory fiber bundle 40 to further ensure that the installed composite refractory fiber bundle 40 is always in a good and effective sealed state.

[0031] Furthermore, the composite refractory fiber bundle 40 can be wound in various ways, including single-bundle winding, folded double-bundle winding, odd-number twisted winding, and twisted spiral winding. Since the gap width between each anode carbon block aluminum guide rod 30 and the electrolytic cell cover 10 and electrolytic cell shield 20 is not exactly the same during installation, and the impact of the anode carbon block aluminum guide rod 30 on the U-shaped opening causes varying degrees of deformation in the steel plate at the U-shaped opening, the composite refractory fiber bundle 40 of this invention can be wound in various ways, such as single-bundle winding, folded double-bundle winding, odd-number twisted winding, or twisted spiral winding, depending on the shape of each gap. This effectively seals the ever-changing U-shaped openings of the electrolytic cell and meets the requirements of complex sealing environments.

[0032] In some embodiments, the composite refractory fiber bundle 40 also selects different sealing states according to the different conditions of each gap, that is, it can be sealed in a taut or slack state. For example, when the gap is small, the composite refractory fiber bundle 40 can be sealed in a taut state; when the gap is large, the composite refractory fiber bundle 40 can be sealed in a slack state. When using a taut seal, the engaging clamp 50 is used as a counterweight. The engaging clamp 50 is placed at a suitable position on the surface of the electrolytic cell cover or directly pressed onto the installed composite refractory fiber bundle 40 to ensure that the composite refractory fiber bundle 40 is in a taut state.

[0033] Furthermore, the winding width of the composite refractory fiber bundle 40 is greater than the width of each gap formed by the anode carbon block aluminum guide rod 30, the electrolytic cell cover 10, and the electrolytic cell shroud 20, to ensure that the composite refractory fiber bundle 40 can completely cover and seal the gaps. The winding width of the composite refractory fiber bundle 40 can be determined by the number of refractory fiber twisted threads 41; the more refractory fiber twisted threads 41 there are, the wider the composite refractory fiber bundle 40 is, and consequently, the wider the winding width of one turn of the composite refractory fiber bundle 40. In addition, the winding width of the composite refractory fiber bundle 40 is also determined by the number of turns of the composite refractory fiber bundle 40; the more turns, the wider the winding width of the composite refractory fiber bundle 40. Therefore, the number of refractory fiber twisted fine threads 41 in the composite refractory fiber bundle 40 and the number of winding turns of the composite refractory fiber bundle 40 can be adjusted according to the width of the gap formed between the aluminum guide rod 30 of the anode carbon block and the top cover 10 and the electrolytic cell cover 20, so as to ensure that the composite refractory fiber bundle 40 effectively seals the gap formed between the aluminum guide rod 30 of the anode carbon block and the top cover 10 and the electrolytic cell cover 20.

[0034] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the present utility model.

Claims

1. A spiral sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell, characterized in that, The device includes a composite refractory fiber bundle, which is wound around the aluminum guide rod of the anode carbon block and attached to the top cover of the electrolytic cell to seal the gap formed between the aluminum guide rod of the anode carbon block and the top cover and cover of the electrolytic cell; the composite refractory fiber bundle is provided with engaging clamps at both ends for clamping the two ends of the composite refractory fiber bundle.

2. The winding sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell according to claim 1, characterized in that, The composite refractory fiber bundle is composed of multiple twisted refractory fiber threads.

3. The winding sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell according to claim 1, characterized in that, The engagement clamp includes a first engagement clamp, a second engagement clamp, and a connector. The first engagement clamp and the second engagement clamp are installed on both sides of the end of the composite refractory fiber bundle. The connector is connected to the first engagement clamp and the second engagement clamp so that the first engagement clamp and the second engagement clamp clamp the composite refractory fiber bundle through the connector.

4. The winding sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell according to claim 3, characterized in that, The connector includes a screw and a nut. The first engagement clamp has a first countersunk hole, and the second engagement clamp has a second countersunk hole. The nut is disposed in the first countersunk hole, and the screw is threadedly connected to the nut and passes through the first countersunk hole into the second countersunk hole.

5. The winding sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell according to claim 3, characterized in that, The clamping surface of the first engaging clamp is provided with a first engaging rack, and the clamping surface of the second engaging clamp is provided with a second engaging rack, with the first engaging rack and the second engaging rack being arranged alternately.

6. The spiral sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell according to claim 1, characterized in that, The composite refractory fiber bundle is provided with movable pressure blocks.

7. The winding sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell according to claim 1, characterized in that, The winding forms include single-bundle winding, folded double-bundle winding, odd-numbered twist winding, and twisted spiral winding.

8. The spiral sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell according to claim 1, characterized in that, The winding width of the composite refractory fiber bundle is greater than the width of the gap formed between the anode carbon block aluminum guide rod and the electrolytic cell cover and electrolytic cell shroud.

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