Upper derrick seal for an aluminum reduction cell

Abstract

The application discloses a sealing device for an upper guide rod of an aluminum electrolysis cell, a horizontal cover plate is arranged above an aluminum electrolysis device, a slot hole is formed in the horizontal cover plate and used for allowing an anode guide rod to extend out, a gap exists between the horizontal cover plate and the anode guide rod, high-temperature flue gas (containing fluorides, dust and the like) is leaked out, the environment is polluted and the load of a purification system is increased, therefore, a sealing plate assembly and a fixing assembly are arranged on the horizontal cover plate, the sealing plate assembly is used for sealing the gap between the horizontal cover plate and the anode guide rod, and the fixing assembly is used for positioning the sealing plate assembly. The application provides a sealing device with high-temperature resistance and long service life, solves the problems of flue gas leakage and heat loss in the electrolysis process, improves the collection rate of electrolysis flue gas, and purifies the air environment of an electrolysis production workshop. After the sealing effect of the upper part of the slot is improved, the heat loss of the electrolysis cell is reduced, the average voltage of the cell is reduced by 5 mV, and the power consumption per ton of aluminum is reduced by 16 kwh / t.Al.

Description

Technical Field

[0001] This application relates to the field of aluminum electrolysis production technology, and in particular to a sealing device for the upper guide rod of an aluminum electrolysis cell. Background Technology

[0002] This utility model relates to the field of aluminum electrolysis production technology. The aluminum electrolysis process generates a large amount of harmful gases, necessitating treatment of the flue gas from the aluminum electrolysis cell to reduce its overflow. Overflowing flue gas also carries away heat from the electrolysis cell, causing energy loss. Furthermore, the fluorine-containing gases in the flue gas are beneficial to electrolysis production and need to be purified by an electrolysis gas collection system. Due to the gap between the anode guide rod and the horizontal cover plate of the aluminum electrolysis cell, high-temperature flue gas (containing fluorides, dust, etc.) leaks out, polluting the environment and increasing the load on the purification system. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, this utility model provides a sealing device for the upper guide rod of an aluminum electrolytic cell, comprising: an anode guide rod; A horizontal cover plate with slots, through which the anode guide rod passes; A sealing plate assembly is disposed in the slot of the horizontal cover plate. The sealing plate assembly is U-shaped and is snapped onto the anode guide rod through an opening. A fixing component for securing the sealing component plate to the horizontal cover plate.

[0005] In one feasible implementation, the sealing plate assembly includes: A phenolic resin material layer is disposed on the upper layer of the sealing plate assembly, and the phenolic resin material layer is used to resist flue gas corrosion. A filter cloth layer is disposed on the lower layer of the sealing plate assembly, and the filter cloth layer is used to resist the thermal corrosion of flue gas.

[0006] In one feasible implementation, the fixing component includes: A first spring support is disposed on the upper surface of the horizontal cover plate; A screw hole seat is disposed on the upper surface of the sealing plate assembly; A first screw, one end of which is threaded to the screw hole seat, and the other end of which passes through the first spring support; A first pressure spring is sleeved on the middle section of the first screw, one end of the first pressure spring abuts against the first spring support, and the other end of the first pressure spring abuts against the screw hole seat.

[0007] In one feasible implementation, it further includes: A cover plate is disposed on the upper side of the first spring support.

[0008] In one feasible implementation, it further includes: The first pressure nut is threadedly connected to the middle section of the screw, and the spring abuts against the first pressure nut at one end of the screw hole seat.

[0009] In one feasible implementation, it further includes: A movable sealing assembly is detachably disposed on the opening side of the sealing plate assembly for sealing the opening side of the horizontal cover plate.

[0010] In one feasible implementation, it further includes: A sealing upper plate is disposed on the opening side of the sealing plate assembly; The wing plates are disposed on both sides of the sealing upper plate, and the wing plates are provided with screw holes; The second support is disposed on the horizontal cover plate, and there are two second supports; The second screw has one end screwed to the wing plate and the other end passing through the second support. The second pressure nut is located at one end of the second screw that passes through the second support.

[0011] In one feasible implementation, it further includes: A semiconductor sensor is disposed on the upper side of the horizontal cover plate, and the semiconductor sensor is used to monitor the content of fluoride in the air.

[0012] In one feasible implementation, it further includes: A photoelectric sensor is disposed on the upper side of the horizontal cover plate, and the photoelectric sensor is used to monitor the dust content in the air.

[0013] In one feasible implementation, it further includes: An alarm element is electrically connected to the semiconductor sensor and the photoelectric sensor.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: The horizontal cover plate is positioned above the aluminum electrolysis equipment. It has slots for the anode guide rod to extend from it. Due to gaps between the horizontal cover plate and the anode guide rod, high-temperature flue gas (containing fluorides, dust, etc.) leaks out, polluting the environment and increasing the load on the purification system. Therefore, a sealing plate assembly and a fixing assembly are installed on the horizontal cover plate. The sealing plate assembly seals the gap between the horizontal cover plate and the anode guide rod, while the fixing assembly positions the sealing plate assembly. This invention provides a high-temperature resistant, long-life sealing device that solves the problems of flue gas leakage and heat loss during electrolysis, improving the flue gas collection rate and purifying the air environment in the electrolysis production workshop. Improved sealing at the top of the cell reduces heat loss, lowers the average cell voltage by 5mV, and reduces electricity consumption per ton of aluminum by 16kWh / t.Al, achieving a win-win situation of energy saving and improved operating environment in aluminum electrolysis production. Furthermore, compared to traditional sealing methods using waste filter bags and soft fillers, this technical solution has the advantages of being less prone to aging, having excellent high-temperature resistance, and requiring less frequent replacement. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A top view of the sealing device for the upper guide rod of an aluminum electrolysis cell according to an embodiment of this application; Figure 2 A main view structural block diagram of an upper guide rod sealing device for an aluminum electrolytic cell according to an embodiment of this application; Figure 3 This is a side view structural block diagram of an upper guide rod sealing device for an aluminum electrolytic cell according to an embodiment of this application.

[0016] in, Figure 1-3 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100. Anode guide rod; 200. Horizontal cover plate; 300. Sealing plate assembly; 400. Fixing assembly; 410. First spring support; 420. Screw hole seat; 430. First screw; 440. First compression spring. Detailed Implementation

[0017] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0018] like Figure 1-3 As shown in the embodiment of this application, a sealing device for the upper guide rod of an aluminum electrolytic cell is proposed, comprising: an anode guide rod 100; a horizontal cover plate 200, wherein the horizontal cover plate 200 has a slot, and the anode guide rod 100 passes through the slot through the horizontal cover plate 200; a sealing plate assembly 300, wherein the sealing plate assembly 300 is disposed at the slot of the horizontal cover plate 200, the sealing plate assembly 300 is U-shaped, and the sealing plate assembly 300 is snapped onto the anode guide rod 100 through an opening; and a fixing assembly 400, wherein the fixing assembly 400 is used to fix the sealing assembly plate to the horizontal cover plate 200.

[0019] The aluminum electrolytic cell upper guide rod sealing device provided in this application embodiment includes a sealing plate assembly 300 and a fixing assembly 400, which are applied in the anode guide rod 100 and the horizontal cover plate 200.

[0020] The horizontal cover plate 200 is positioned above the aluminum electrolysis equipment. The horizontal cover plate 200 has slots for the anode guide rod 100 to extend from. Because a gap exists between the horizontal cover plate 200 and the anode guide rod 100, high-temperature flue gas (containing fluorides, dust, etc.) leaks out, polluting the environment and increasing the load on the purification system. Therefore, a sealing plate assembly 300 and a fixing assembly 400 are installed on the horizontal cover plate 200. The sealing plate assembly 300 seals the gap between the horizontal cover plate 200 and the anode guide rod 100, and the fixing assembly 400 positions the sealing plate assembly 300. This invention provides a high-temperature resistant, long-life sealing device that solves the problems of flue gas leakage and heat loss during electrolysis, thereby improving the flue gas collection rate and purifying the air environment of the electrolysis production workshop. With improved sealing at the top of the tank, heat loss from the electrolytic cell is reduced, the average cell voltage is lowered by 5mV, and the electricity consumption per ton of aluminum is reduced by 16kwh / t.Al. This achieves a win-win situation of energy saving and consumption reduction in the aluminum electrolysis production process and improvement of the operating environment. At the same time, compared with the traditional sealing methods of waste cleaning bags and soft fillers, this technical solution has the advantages of being less prone to aging, having excellent high-temperature resistance, and not requiring frequent replacement.

[0021] The anode guide rod 100 can typically be attached to the slot of the horizontal cover plate 200 on one side. Therefore, the sealing plate assembly 300 is U-shaped and can be snapped onto the three sides of the anode guide rod 100 through one side of the opening, so as to seal the gap of the horizontal cover plate 200.

[0022] like Figure 1-3 As shown, the sealing plate assembly 300 includes: a phenolic resin material layer disposed on the upper layer of the sealing plate assembly 300, the phenolic resin material layer being used to resist flue gas corrosion; and a filter cloth layer disposed on the lower layer of the sealing plate assembly 300, the filter cloth layer being used to resist flue gas thermal corrosion.

[0023] In this technical solution, the sealing plate assembly 300 includes a phenolic resin material layer and a filter cloth layer. The filter cloth layer is disposed in the lower layer of the sealing plate assembly 300 to compensate for the thermal deformation of the sealing plate assembly 300, thereby improving the heat resistance of the sealing plate assembly 300. The phenolic resin material layer is disposed in the upper layer of the sealing plate assembly 300 to resist the corrosion of the sealing plate assembly 300 by fluorides.

[0024] This technical solution improves the high temperature resistance and corrosion resistance of the sealing plate assembly 300 by selecting materials, thereby improving the stability of the technical solution. The first step is to extend the service life of the sealing plate assembly 300 and avoid secondary leakage caused by frequent replacement.

[0025] like Figure 1-3 As shown, the fixing assembly 400 includes: a first spring support 410 disposed on the upper surface of the horizontal cover plate 200; a screw hole seat 420 disposed on the upper surface of the sealing plate assembly 300; a first screw 430, one end of which is threaded to the screw hole seat 420, and the other end of which passes through the first spring support 410; and a first pressure spring 440 sleeved on the middle section of the first screw 430, one end of which abuts against the first spring support 410, and the other end of which abuts against the screw hole seat 420.

[0026] In this technical solution, the fixing component 400 includes a first spring support 410, a screw hole seat 420, a first screw 430, and a first pressure spring 440. The first spring support 410 is disposed on the horizontal cover plate 200 and on the opposite side of the opening end of the sealing plate assembly 300. The screw hole seat 420 is disposed on the upper surface of the sealing plate assembly 300. The first screw 430 passes through the first spring support 410 and is threadedly connected to the screw hole seat 420. The first pressure spring 440 is sleeved in the middle of the first screw 430. One end of the first pressure spring 440 abuts against the screw hole seat 420, and the other end of the first pressure spring 440 abuts against the first spring support 410. Thus, through the first pressure spring 440, the sealing plate assembly 300 abuts against the anode guide rod 100, further enhancing the effect. When disassembly is required, the first screw 430 can be rotated to engage the threaded connection between the first screw 430 and the screw hole seat 420, thereby enabling the disassembly of the sealing plate assembly 300 and facilitating its replacement when damaged.

[0027] like Figure 1-3 As shown, it also includes a cover plate, which is disposed on the upper side of the first spring support 410.

[0028] In this technical solution, a cover plate is disposed on the upper side of the first spring support 410. The cover plate covers the first spring support 410, the first screw 430 and the first compression spring 440, in order to increase and improve the stability and safety of this technical solution and prevent the components from being damaged by collision due to being exposed.

[0029] like Figure 1-3 As shown, the fixing assembly 400 further includes: a first pressure nut, which is threadedly connected to the middle section of the first screw 430, and the first pressure spring 440 abutting against one end of the screw hole seat 420 and abutting against the first pressure nut.

[0030] In this technical solution, the first pressure nut is located in the middle section of the first screw 430 to further compress the first pressure spring 440, increase the pressure of the first pressure spring 440 acting on the first spring support 410, and thus further improve the stability of the sealing plate assembly 300.

[0031] like Figure 1-3 As shown, it also includes: a movable sealing assembly, which is detachably disposed on the opening side of the sealing plate assembly 300 for sealing the opening side of the horizontal cover plate 200.

[0032] In this technical solution, when applied to an aluminum electrolysis cell where none of the four sides of the anode guide rod 100 are in close contact with the horizontal cover plate 200, a movable sealing assembly is added. This movable sealing assembly is used to seal the open side of the sealing plate assembly 300.

[0033] like Figure 1-3 The assembly further includes: a sealing upper plate disposed on the opening side of the sealing plate assembly 300; wing plates disposed on both sides of the sealing upper plate, the wing plates having screw holes; a second support disposed on the horizontal cover plate 200, the number of the second supports being two; a second screw, one end of the second screw being screwed to the wing plate, the other end of the second screw passing through the second support; and a second pressure nut disposed at the end of the second screw passing through the second support.

[0034] In this technical solution, the movable sealing assembly includes a sealing upper plate, a wing plate, a second support, and a second screw. The structure of the sealing upper plate is the same as that of the sealing plate assembly 300, and the sealing upper plate is located on the open side of the sealing plate assembly 300. The wing plates are located on both sides of the sealing upper plate. Two second supports are located on the horizontal cover plate 200. Two second screws are also present, with one end of each second screw threaded to the wing plate and the other end passing through the second support. A second pressure nut is located at the end of the second screw passing through the second support. When the second screws are tightened, the sealing upper plate abuts against the open side of the sealing plate assembly 300, thereby achieving a seal on the open side of the sealing plate assembly 300. This arrangement further improves the sealing effect of this technical solution.

[0035] like Figure 1-3 As shown, it also includes a semiconductor sensor, which is disposed on the upper side of the horizontal cover plate 200, and is used to monitor the content of fluoride in the air.

[0036] In this technical solution, a semiconductor sensor is disposed on the upper side of the horizontal cover plate 200. The semiconductor sensor can detect the content of fluoride in the air, thereby monitoring the sealing effect of the sealing plate assembly 300.

[0037] like Figure 1-3 As shown, it also includes: a photoelectric sensor, which is disposed on the upper side of the horizontal cover plate 200, and the photoelectric sensor is used to monitor the dust content in the air.

[0038] In this technical solution, the photoelectric sensor can detect the dust content in the air, thereby enabling the monitoring of the sealing effect of the sealing plate assembly 300.

[0039] like Figure 1-3 As shown, it also includes: an alarm element, which is electrically connected to the semiconductor sensor and the photoelectric sensor.

[0040] In this technical solution, the alarm element is electrically connected to the semiconductor sensor and the photoelectric sensor. When the semiconductor sensor and the photoelectric sensor detect that the content of fluoride or dust exceeds the threshold, it can be considered that the sealing plate assembly 300 has failed, and the alarm will issue an alarm to remind the staff to carry out maintenance. This setting improves the response speed of this technical solution and further enhances its stability.

[0041] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sealing device for the upper guide rod of an aluminum electrolysis cell, characterized in that, include: Anode guide rod; A horizontal cover plate with slots, through which the anode guide rod passes; A sealing plate assembly is disposed in the slot of the horizontal cover plate. The sealing plate assembly is U-shaped and is snapped onto the anode guide rod through an opening. A fixing component for securing the sealing component plate to the horizontal cover plate.

2. The sealing device for the upper guide rod of the aluminum electrolytic cell according to claim 1, characterized in that, The sealing plate assembly includes: A phenolic resin material layer is disposed on the upper layer of the sealing plate assembly, and the phenolic resin material layer is used to resist flue gas corrosion. A filter cloth layer is disposed on the lower layer of the sealing plate assembly, and the filter cloth layer is used to resist the thermal corrosion of flue gas.

3. The sealing device for the upper guide rod of the aluminum electrolytic cell according to claim 1, characterized in that, The fixing component includes: A first spring support is disposed on the upper surface of the horizontal cover plate; A screw hole seat is disposed on the upper surface of the sealing plate assembly; A first screw, one end of which is threaded to the screw hole seat, and the other end of which passes through the first spring support; A first pressure spring is sleeved on the middle section of the first screw, one end of the first pressure spring abuts against the first spring support, and the other end of the first pressure spring abuts against the screw hole seat.

4. The sealing device for the upper guide rod of the aluminum electrolytic cell according to claim 3, characterized in that, Also includes: A cover plate is disposed on the upper side of the first spring support.

5. The sealing device for the upper guide rod of the aluminum electrolytic cell according to claim 3, characterized in that, The fixed components also include: The first pressure nut is threadedly connected to the middle section of the first screw, and the first pressure spring abuts against one end of the screw hole seat and the first pressure nut.

6. The sealing device for the upper guide rod of the aluminum electrolytic cell according to claim 3, characterized in that, Also includes: A movable sealing assembly is detachably disposed on the opening side of the sealing plate assembly for sealing the opening side of the horizontal cover plate.

7. The sealing device for the upper guide rod of the aluminum electrolytic cell according to claim 6, characterized in that, Also includes: A sealing upper plate is disposed on the opening side of the sealing plate assembly; The wing plates are disposed on both sides of the sealing upper plate, and the wing plates are provided with screw holes; The second support is disposed on the horizontal cover plate, and there are two second supports; The second screw has one end screwed to the wing plate and the other end passing through the second support. The second pressure nut is located at one end of the second screw that passes through the second support.

8. The sealing device for the upper guide rod of the aluminum electrolytic cell according to claim 1, characterized in that, Also includes: A semiconductor sensor is disposed on the upper side of the horizontal cover plate, and the semiconductor sensor is used to monitor the content of fluoride in the air.

9. The sealing device for the upper guide rod of the aluminum electrolytic cell according to claim 8, characterized in that, Also includes: A photoelectric sensor is disposed on the upper side of the horizontal cover plate, and the photoelectric sensor is used to monitor the dust content in the air.

10. The sealing device for the upper guide rod of the aluminum electrolytic cell according to claim 9, characterized in that, Also includes: An alarm element is electrically connected to the semiconductor sensor and the photoelectric sensor.

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