Sealing device for u-shaped mouth of prebaked aluminum smelting electrolytic cell

Abstract

The utility model provides a kind of sealing device of prebaked aluminium smelting electrolytic cell U-shaped mouth, belong to metallurgical equipment technical field. Including high temperature resistant cloth bag;High temperature resistant cloth bag is filled with alumina powder in the head middle of the special-shaped high temperature resistant cloth bag and is equipped with through-hole, the edge of the through-hole is sewed sealing, to be used for the tail of the special-shaped high temperature resistant cloth bag is passed through the through-hole, the special-shaped high temperature resistant cloth bag is tensioned;The special-shaped high temperature resistant cloth bag is wound and is attached on electrolytic cell upper cover on anode carbon block aluminum guide rod, to form the gap between anode carbon block aluminum guide rod and electrolytic cell upper cover, electrolytic cell cover and be sealed. To use, directly high temperature resistant cloth bag is wound to anode carbon block aluminum guide rod and is attached on electrolytic cell upper cover, then the tail of high temperature resistant cloth bag is passed through through-hole and is tensioned, alumina powder is filled into gap and uneven steel plate plane under the action of gravity, to reach the effect of effective sealing, avoid flue gas exfiltration.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, specifically to a 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 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 top cover and cover of the electrolytic cell 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 sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell includes a shaped high-temperature resistant cloth bag; the shaped high-temperature resistant cloth bag is filled with alumina powder; a through hole is opened in the middle of the head of the shaped high-temperature resistant cloth bag, and the edge of the through hole is sewn sealed to allow the tail of the shaped high-temperature resistant cloth bag to pass through the through hole and tighten the shaped high-temperature resistant cloth bag; the shaped high-temperature resistant cloth bag is wrapped 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.

[0007] Preferably, the head of the irregularly shaped high-temperature resistant cloth bag is a T-shaped head with a D-shaped ring in the middle; the tail is a conical flat shape and has a filling port.

[0008] Preferably, the irregularly shaped high-temperature resistant cloth bag is thicker at both sides and thinner in the middle, with an oblique angle at the transition between the thick and thin sections.

[0009] Preferably, the irregularly shaped high-temperature resistant cloth bag is provided with two movable tightening components, each of which includes a high-temperature resistant tightening rope and a locking buckle; the high-temperature resistant tightening rope is sleeved on the irregularly shaped high-temperature resistant cloth bag, and the locking buckle is provided on the high-temperature resistant tightening rope to control the tightening state of the high-temperature resistant tightening rope.

[0010] Preferably, the width of the irregularly shaped high-temperature resistant cloth bag is greater than the width of the gap formed between the aluminum guide rod of the anode carbon block and the top cover and cover of the electrolytic cell.

[0011] Preferably, the irregularly shaped high-temperature resistant bag is made of high-temperature resistant fabric.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In use, the sealing device for the U-shaped opening of the prebaked aluminum smelting electrolytic cell of this utility model involves directly wrapping a shaped high-temperature resistant cloth bag around the aluminum guide rod of the anode carbon block and attaching it to the top cover of the electrolytic cell. Then, the tail end of the shaped high-temperature resistant cloth bag is passed through the through hole and tightened, covering the gap formed between the aluminum guide rod of the anode carbon block, the top cover of the electrolytic cell, and the electrolytic cell shroud. Because the shaped high-temperature resistant cloth bag is filled with alumina powder, when it covers the gap, the fluidity of the alumina powder and the overall softness and deformability of the shaped high-temperature resistant cloth bag can be fully utilized to flexibly and effectively seal each gap, preventing flue gas leakage. At the same time, the weight of the alumina powder further tightens the seal, improving the sealing effect and thus improving the working environment of the electrolysis workshop, ensuring that environmental protection standards are met. When replacing the anode carbon blocks, the irregularly shaped high-temperature resistant filter bag is removed from the aluminum guide rod of the anode carbon block. This prevents the filter bag from falling off or being damaged by friction and compression from the aluminum guide rod, thus extending its service life. Simultaneously, the 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. Attached Figure Description

[0014] 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.

[0015] Figure 2 This is a schematic diagram of the assembly of the sealing device of the U-shaped opening of the prebaked aluminum smelting electrolytic cell and the aluminum guide rod of the anode carbon block according to this utility model.

[0016] Figure 3 This is a front view of the sealing device at the U-shaped opening of a prebaked aluminum smelting electrolytic cell in its unfolded state.

[0017] Figure 4 This is a top view of the sealing device of the U-shaped opening of the prebaked aluminum smelting electrolytic cell in its unfolded state.

[0018] Figure 5 A front view of another structure of the sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell in its unfolded state.

[0019] Figure 6 A top view of another structure of the sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell, in its unfolded state.

[0020] In the figure: Electrolytic cell cover 10, electrolytic cell cover 20, anode carbon block aluminum guide rod 30, irregular high temperature resistant cloth bag 40, head 41, through hole 411, tail 42, filling port 43, movable tightening assembly 44, high temperature resistant tightening rope 441, locking buckle 442. Detailed Implementation

[0021] 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.

[0022] Please also refer to Figure 2 and Figure 3 A sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell includes a shaped high-temperature resistant cloth bag 40; the shaped high-temperature resistant cloth bag 40 is filled with alumina powder; a through hole 411 is opened in the middle of the head 41 of the shaped high-temperature resistant cloth bag 40, and the edge of the through hole 411 is sewn sealed to allow the tail 42 of the shaped high-temperature resistant cloth bag 40 to pass through the through hole 411 and tighten the shaped high-temperature resistant cloth bag 40; the shaped high-temperature resistant cloth bag 40 is wrapped 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.

[0023] In use, the sealing device for the U-shaped opening of the prebaked aluminum smelting electrolytic cell of this utility model involves directly wrapping the irregularly shaped high-temperature resistant cloth bag 40 around the aluminum guide rod 30 of the anode carbon block and attaching it to the electrolytic cell cover 10. Then, the tail 42 of the irregularly shaped high-temperature resistant cloth bag 40 is passed through the through hole 411 and tightened, so that the irregularly shaped high-temperature resistant cloth bag 40 covers the gap formed by the aluminum guide rod 30 of the anode carbon block, the electrolytic cell cover 10, and the electrolytic cell cover 20. Since the irregularly shaped high-temperature resistant cloth bag 40 is filled with alumina powder, when the irregularly shaped high-temperature resistant cloth bag 40 covers the gap, it can make full use of the fluidity of the alumina powder and the soft and easily deformable characteristics of the irregularly shaped high-temperature resistant cloth bag 40 to flexibly and effectively seal each gap, preventing flue gas leakage. At the same time, the alumina powder has a certain weight, which can further tighten the seal of the gap, improve the sealing effect, and thus improve the working environment of the electrolysis workshop, ensuring that the environmental protection test in the electrolysis workshop meets the standards. When replacing the anode carbon block, the irregularly shaped high-temperature resistant cloth bag 40 is removed from the aluminum guide rod 30 of the anode carbon block. This prevents the cloth bag 40 from falling off or being damaged by friction and compression from the aluminum guide rod 30, thus extending its service life. Simultaneously, the 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.

[0024] Further, please see Figure 3The irregularly shaped high-temperature resistant filter bag 40 has a T-shaped head 41 with a D-shaped ring in the middle; the tail 42 is conical and flat, and has a filling port 43. Alumina powder is filled into the irregularly shaped high-temperature resistant filter bag 40 through the filling port 43. The amount of alumina powder in the irregularly shaped high-temperature resistant filter bag 40 is appropriate, ensuring that the irregularly shaped high-temperature resistant filter bag 40 is flexible and easily deformable, allowing the alumina powder to move smoothly to a certain position when manually intervened. After the alumina powder is filled into the irregularly shaped high-temperature resistant filter bag 40, the filling port 43 of the conical tail is sewn shut to prevent alumina powder leakage and to facilitate quick installation through the D-shaped ring on site. When the irregularly shaped high-temperature resistant filter bag is wound and installed onto the gap formed by the aluminum guide rod, the electrolytic cell cover, and the electrolytic cell shield on the same plane, the conical tail quickly passes through the D-shaped ring, the wound irregularly shaped high-temperature resistant filter bag is tightened, and then the tail section passing through the D-shaped ring is folded. After folding, the tail 42 of the irregular high-temperature resistant bag contacts the D-ring on one side. The alumina powder in the contacting tail part is reduced by compression and increases to both sides of the bag at the contact part. The outer dimensions of the conical flat tail section passing through the D-ring will be larger than the aperture size of the D-ring, so the conical flat tail section is in a naturally locked state.

[0025] Furthermore, please also refer to Figure 2 and Figure 4 The irregularly shaped high-temperature resistant cloth bag is thicker at both sides and thinner in the middle, with an angled section at the transition point. Since the irregularly shaped high-temperature resistant cloth bag 40 is sealed by wrapping around the anode carbon block aluminum guide rod 30, the width of the gap (i.e., gap D) formed between the anode carbon block aluminum guide rod 30 and the electrolytic cell cover 20 is smaller than the width of the gaps (i.e., gaps A, B, and C) formed between it and the electrolytic cell top cover 10. Furthermore, the electrolytic cell cover 20 is only fastened to one side of the anode carbon block aluminum guide rod 30 after sealing it. Therefore, if the sealing device on the gap between the anode carbon block aluminum guide rod 30 and the electrolytic cell cover 20 is too thick, it will affect the installation of the electrolytic cell cover 20. Based on this, the irregularly shaped high-temperature resistant cloth bag 40 of this utility model is designed to be thicker at both sides and thinner in the middle. When wrapping the irregularly shaped high-temperature resistant cloth bag 40, the thinner part in the middle covers the gap D, and the thicker parts at both sides cover the gaps A, B and C, thereby avoiding any impact on the installation of the electrolytic cell 20.

[0026] As mentioned above, the gap between the anode carbon block aluminum guide rod 30 and the electrolytic cell cover 20 is small, and the electrolytic cell cover 20 is directly fastened to one side of the anode carbon block aluminum guide rod 30. Therefore, the thickness of the irregularly shaped high-temperature resistant cloth bag 40 covering the gap between the anode carbon block aluminum guide rod 30 and the electrolytic cell cover 20 needs to be relatively thin. Therefore, in some embodiments, please also refer to... Figure 5 and Figure 6Two movable tightening components 44 can also be provided on the irregularly shaped high-temperature resistant cloth bag 40. The movable tightening components 44 include a high-temperature resistant tightening rope 441 and a locking buckle 442. The high-temperature resistant tightening rope 441 is sleeved on the irregularly shaped high-temperature resistant cloth bag 40, and the locking buckle 442 is set on the high-temperature resistant tightening rope 441 to control the tightening state of the high-temperature resistant tightening rope 441. The movable tightening components 44 are respectively set at both ends of the narrow middle part of the irregularly shaped high-temperature resistant cloth bag 40. Pressing the locking buckle 442 pushes it towards the irregularly shaped high-temperature resistant cloth bag 40 until the high-temperature resistant tightening rope 441 tightens the two ends of the part, and then the locking buckle 442 is released. This achieves a thinner thickness of the irregularly shaped high-temperature resistant cloth bag 40 covering the gap formed between the anode carbon block aluminum guide rod 30 and the electrolytic cell cover 20, ensuring the normal installation of the electrolytic cell cover 20.

[0027] Furthermore, the irregularly shaped high-temperature resistant cloth bag 40 is designed with an opening, so that the corresponding amount of alumina powder can be filled according to the width of the gap or the degree of deformation of the steel plate, thereby improving the applicability of the irregularly shaped high-temperature resistant cloth bag 40.

[0028] Furthermore, the width of the irregularly shaped high-temperature resistant cloth bag 40 is greater than the width of the gap formed between the anode carbon block aluminum guide rod 30 and the electrolytic cell cover 10 and electrolytic cell cover 20, so as to ensure that the irregularly shaped high-temperature resistant cloth bag 40 can completely cover the gap and seal it.

[0029] Furthermore, the irregularly shaped high-temperature resistant bag 40 is made of high-temperature resistant fabric. Since the electrolytic cell contains molten aluminum at extremely high temperatures, the molten aluminum will radiate upwards through the gaps formed between the anode carbon block aluminum guide rod and the electrolytic cell cover / shroud. Therefore, this invention uses high-temperature resistant fabric to sew the irregularly shaped high-temperature resistant bag 40, preventing the heat radiation from the molten aluminum from burning the bag.

[0030] 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 sealing device for the U-shaped opening of a prebaked aluminum smelting electrolytic cell, characterized in that, The device includes an irregularly shaped high-temperature resistant cloth bag; the irregularly shaped high-temperature resistant cloth bag is filled with alumina powder; a through hole is opened in the middle of the head of the irregularly shaped high-temperature resistant cloth bag, and the edge of the through hole is sewn sealed so that the tail of the irregularly shaped high-temperature resistant cloth bag can be passed through the through hole to tighten the irregularly shaped high-temperature resistant cloth bag; the irregularly shaped high-temperature resistant cloth bag is wrapped 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.

2. The sealing device for the U-shaped opening of the prebaked aluminum smelting electrolytic cell according to claim 1, characterized in that, The head of the irregularly shaped high-temperature resistant cloth bag is T-shaped, with a D-shaped ring in the middle; the tail is conical and flat, and a filling port is provided at the tail.

3. The sealing device for the U-shaped opening of the prebaked aluminum smelting electrolytic cell according to claim 1, characterized in that, The irregularly shaped high-temperature resistant cloth bag is thicker at both sides and thinner in the middle, with an angled section at the transition between the thick and thin parts.

4. The sealing device for the U-shaped opening of the prebaked aluminum smelting electrolytic cell according to claim 1, characterized in that, The irregularly shaped high-temperature resistant cloth bag is provided with two movable tightening components, each of which includes a high-temperature resistant tightening rope and a locking buckle. The high-temperature resistant tightening rope is sleeved on the irregularly shaped high-temperature resistant cloth bag, and the locking buckle is located on the high-temperature resistant tightening rope to control the tightening state of the high-temperature resistant tightening rope.

5. The sealing device for the U-shaped opening of the prebaked aluminum smelting electrolytic cell according to claim 1, characterized in that, The width of the irregularly shaped high-temperature resistant cloth bag is greater than the width of the gap formed between the aluminum guide rod of the anode carbon block and the top cover and cover of the electrolytic cell.

6. The sealing device for the U-shaped opening of the prebaked aluminum smelting electrolytic cell according to claim 1, characterized in that, The irregularly shaped high-temperature resistant cloth bag is made of high-temperature resistant fabric.

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