Shell apparatus

Abstract

The utility model belongs to aluminum electrolysis technical field, concretely relates to a shell beating device. The shell beating device includes: blanker, sleeve pipe, with blanker connection, shell remover, including sleeve and a plurality of interval arrangement's convex, sleeve pipe is connected away from blanker one end, a plurality of convexes are located in the sleeve, shell beating device can realize the cleaning of " shell head bag ".

Description

Technical Field

[0001] This application belongs to the field of aluminum electrolysis technology, specifically relating to a shell-breaking device. Background Technology

[0002] In the aluminum electrolysis production process, the shell-breaking and feeding system of the electrolytic cell is a key link in maintaining stable and efficient operation. This system is usually equipped with several shell-breaking hammers, which, driven by compressed air, periodically break through the solidified electrolyte shell (referred to as the "shell") on the surface of the electrolytic cell, forming a hole (commonly known as a "fire eye") through which the alumina raw material enters the high-temperature electrolyte melt.

[0003] However, the shell-breaking hammerhead can develop a "shell head bulge" phenomenon (or hammerhead adhesion and coating), which severely restricts the efficiency of the shell-breaking and feeding system. The formation mechanism of the "shell head bulge" phenomenon is as follows: when the shell-breaking hammerhead rapidly penetrates the shell surface and reaches the high-temperature electrolyte melt of about 940°C at a frequency of about once every 2 minutes, a layer of liquid electrolyte adheres to its surface as it rapidly retracts. This adhered material rapidly cools and solidifies upon exposure to air, firmly adhering to the surface of the shell-breaking hammerhead. With the increase of shell-breaking cycles, the adhered material accumulates layer by layer, eventually forming a large solidified electrolyte coating block (i.e., the "shell head bulge") around the shell-breaking hammerhead.

[0004] The presence of "shell head" poses a significant threat to electrolytic production: Firstly, the normal size of the fire hole was altered, causing it to enlarge abnormally, resulting in a large amount of heat loss from the electrolytic cell and wasted electrical energy. Secondly, the huge coating block can block or even completely block the feeding channel, preventing alumina from being added normally, which in turn causes a series of process abnormalities such as material shortage in the electrolytic cell and sudden anode effect, significantly increasing the power consumption per ton of aluminum. Third, it interferes with the current distribution around the anode, exacerbates anodic oxidation, and affects production stability. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a shell-breaking device, which aims to at least partially solve the technical problem of "shell head bulge" phenomenon that occurs when the shell-breaking hammer head is used.

[0006] The technical solution of this utility model is as follows: A shell-removing device includes: a feeder; a sleeve connected to the feeder; a shell remover including a sleeve and a plurality of spaced protrusions, the sleeve being connected to the end of the sleeve away from the feeder, the plurality of protrusions being disposed inside the sleeve; and a shell remover being vertically and retractably disposed inside the feeder, the sleeve, and the sleeve.

[0007] In some implementations, the distance between the end of the protrusion furthest from the sleeve and the shell-breaking device is less than or equal to 3 mm.

[0008] In some embodiments, the width of the end of the protrusion away from the sleeve is greater than or equal to 0 mm and less than or equal to 3 mm; the width of the end of the protrusion connected to the sleeve is greater than or equal to 3 mm and less than or equal to 15 mm; the distance between the end of the protrusion away from the sleeve and the end of the protrusion connected to the sleeve is greater than or equal to 5 mm and less than or equal to 30 mm.

[0009] In some implementations, the spacing between two adjacent protrusions is 5 mm to 40 mm.

[0010] In some implementations, the shape of the protrusion can be one or more of the following: triangle, trapezoid, square, and arc.

[0011] In some implementations, the protrusions form a single-ring structure, or the protrusions form multiple single-ring structures with adjacent single-ring structures arranged in parallel, or the protrusions form a scattered distributed structure, or the protrusions form a spiral structure.

[0012] In some embodiments, the shell-breaking device includes: a hammer rod, which is vertically mounted inside the feeder, the sleeve, and the barrel; and a hammer head connected to the end of the hammer rod away from the feeder.

[0013] In some embodiments, when the hammer head is in the initial position, the end of the sleeve away from the sleeve is flush with the end of the hammer head away from the hammer rod, or the end of the sleeve away from the sleeve is flush with the diameter-changing part of the hammer head.

[0014] In some implementations, a limiting member is provided at the end of the hammer rod away from the hammer head, and the width of the limiting member is greater than the diameter of the sleeve.

[0015] In some implementations, the sleeve is integrally formed with the protrusion.

[0016] The beneficial effects of this utility model include at least the following: Because the sleeve is connected to the feeder, the shell remover includes a sleeve and multiple spaced protrusions. The sleeve is connected to the end of the sleeve away from the feeder, and the multiple protrusions are located inside the sleeve. The shell remover can be lifted and lowered inside the feeder, sleeve, and sleeve. Therefore, when the shell remover periodically penetrates the solidified electrolyte shell surface on the electrolytic cell, the shell remover will periodically enter the sleeve. When the shell remover enters the sleeve, the multiple protrusions will scrape off the "shell head blob" formed on the shell remover, thereby cleaning the "shell head blob" and accelerating the removal of electrolyte adhering to the shell remover. This ensures the stable operation of the electrolytic cell, achieves energy saving and consumption reduction, and reduces the labor intensity of workers. Moreover, by using multiple protrusions to reduce the thickness of the "shell head blob", the danger of cutting edges present in traditional modifications is avoided, ensuring safety.

[0017] This application does not alter the original components of the shell-breaking device (such as the drive, transmission, feeder, and shell-breaking mechanism), avoiding complex modifications, reducing the workload of component replacement, and lowering modification costs. Simultaneously, the use of the 32-protrusion structure reduces the thickness of the "shell head package," avoiding the danger of cutting edges present in traditional modifications. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the shell-breaking device in some embodiments; Figure 2 for Figure 1 A schematic diagram of the first structure of the shell remover in the shell-removing device; Figure 3 for Figure 1 A schematic diagram of the second structure of the shell remover in the shell-removing device; Figure 4 for Figure 1 A schematic diagram of the third structure of the shell remover in the shell-breaking device; Figure 5 for Figure 1 A schematic diagram of the fourth structure of the shell remover in the shell-breaking device; Figure 6 for Figure 1 A schematic diagram of the first arrangement of multiple protrusions in the shell remover; Figure 7 for Figure 1 A schematic diagram of the second arrangement of multiple protrusions in the shell remover; Figure 8 for Figure 1 A schematic diagram of the third arrangement of multiple protrusions in the shell remover.

[0020] In the attached image: Feeder 10; 20mm sleeve; Shell remover 30, sleeve 31, protrusion 32; Shell-breaking tool 40, hammer rod 41, hammer head 42, limit ring 43. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that all directional indications in this embodiment are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0025] Specific technical solutions will now be described in detail with reference to the accompanying drawings, which are not necessarily drawn to scale. Similar or identical reference numerals may be used to designate the same or similar parts in different figures. The use of similar or identical reference numerals in different figures does not mean that all figures including similar or identical reference numerals constitute a single or the same embodiment. The accompanying drawings illustrate the various embodiments discussed in this application in a generalized, illustrative, and not restrictive manner.

[0026] Combination Figure 1 and Figure 2 The shell-removing device in this embodiment includes: a feeder 10, a sleeve 20, a shell remover 30, and a shell-removing device 40. The sleeve 20 is connected to the feeder 10. The shell remover 30 includes a sleeve 31 and a plurality of spaced protrusions 32. The sleeve 31 is connected to the end of the sleeve 20 away from the feeder 10, and the plurality of protrusions 32 are disposed inside the sleeve 31. The shell-removing device 40 is vertically and retractably disposed within the feeder 10, the sleeve 20, and the sleeve 31.

[0027] Since the sleeve 20 is connected to the feeder 10, the shell remover 30 includes a sleeve 31 and multiple spaced protrusions 32. The sleeve 31 is connected to the end of the sleeve 20 away from the feeder 10. The multiple protrusions 32 are located inside the sleeve 31. The shell remover 40 is vertically mounted inside the feeder 10, the sleeve 20, and the sleeve 31. Therefore, when the shell remover 40 periodically penetrates the solidified electrolyte shell surface on the surface of the electrolytic cell, the shell remover 40 will periodically enter the sleeve 31. When the shell remover 40 enters the sleeve 31, the multiple protrusions 32 will scrape the "shell head" formed on the shell remover 40, thereby cleaning the "shell head" and accelerating the removal of electrolyte adhering to the shell remover 40. This ensures the stable operation of the electrolytic cell, achieves energy saving and consumption reduction, and reduces the labor intensity of workers. Moreover, by using multiple protrusions 32 to reduce the thickness of the "shell head", the danger of cutting edges present in traditional modifications is avoided, ensuring safety.

[0028] This application does not alter the original components of the shell-breaking device (such as the drive, transmission, feeder 10, and shell-breaking device 40), thus avoiding complex modifications, reducing the workload of component replacement, and lowering modification costs. Simultaneously, the protrusion 32 structure reduces the thickness of the "shell head package," avoiding the danger of cutting edges present in traditional modifications.

[0029] Combination Figure 1 and Figure 2 The distance between the end of the protrusion 32 furthest from the sleeve 31 and the shell-breaking device 40 is less than or equal to 3mm, so that the multiple protrusions 32 can scrape off the "shell head blob" formed on the shell-breaking device 40. Even if there is an "shell head blob" adhering to the shell-breaking device 40, the adhesion thickness of the "shell head blob" is still less than 3mm, which will not affect the stable operation of the electrolytic cell.

[0030] In some embodiments, the width of the end of the protrusion 32 away from the sleeve 31 is greater than or equal to 0 mm and less than or equal to 3 mm. The width of the end of the protrusion 32 connected to the sleeve 31 is greater than or equal to 3 mm and less than or equal to 15 mm. The distance between the end of the protrusion 32 away from the sleeve 31 and the end of the protrusion 32 connected to the sleeve 31 is greater than or equal to 5 mm and less than or equal to 30 mm. This allows the multiple protrusions 32 to scrape the "shell head pack" formed on the shell-breaking machine 40, thereby cleaning the "shell head pack," accelerating the shedding of electrolyte adhering to the shell-breaking machine 40, and ensuring the stable operation of the electrolytic cell.

[0031] In some embodiments, the distance between two adjacent protrusions 32 is 5mm to 40mm, so that the multiple protrusions 32 can scrape the "shell head" formed on the shell remover 40, so as to ensure that the multiple protrusions 32 can scrape the "shell head" evenly and avoid uneven force causing the cleaning device to tilt and be damaged.

[0032] Combination Figure 2 , Figure 3 , Figure 4 and Figure 5 The shape of the protrusion 32 can be one or more of the following: triangle, trapezoid, square, arc, so that multiple protrusions 32 can scrape the "shell head" formed on the shell-breaking tool 40.

[0033] Combination Figure 6 , Figure 7 and Figure 8 Multiple protrusions 32 can form a single ring structure, or multiple protrusions 32 can form multiple single ring structures with two adjacent single ring structures arranged in parallel, or multiple protrusions 32 can form a scattered distributed structure, or multiple protrusions 32 can form a spiral structure, so as to ensure that multiple protrusions 32 can scrape the "shell head package" evenly and avoid uneven force causing the cleaning device to tilt and be damaged.

[0034] In some embodiments, the shell-breaking device 40 includes a hammer rod 41 and a hammer head 42. The hammer rod 41 is vertically and retractably disposed within the feeder 10, the sleeve 20, and the sleeve 31. The hammer head 42 is connected to the end of the hammer rod 41 away from the feeder 10. The hammer rod 41 drives the hammer head 42 to rise and fall, enabling the hammer head 42 to break shells. At the same time, multiple protrusions within the sleeve 31 can scrape the "shell head blob" formed on the shell-breaking device 40, thereby cleaning the "shell head blob".

[0035] In some embodiments, when the hammer head 42 is in the initial position, the end of the sleeve 31 away from the sleeve 20 is flush with the end of the hammer head 42 away from the hammer rod 41, or the end of the sleeve 31 away from the sleeve 20 is flush with the diameter-changing part of the hammer head 42, so as to ensure that the multiple protrusions inside the sleeve 31 can scrape the "shell head blob" formed on the shell-breaking device 40, thereby cleaning the "shell head blob". For example, the initial position of the hammer head 42 is the position of the hammer head 42 before the lifting mechanism of the shell-breaking device that drives the hammer rod 41 to rise and fall is running.

[0036] In some embodiments, a limiting member 43 is provided at the end of the hammer rod 41 away from the hammer head. The width of the limiting member 43 is greater than the diameter of the sleeve 20 to prevent the hammer rod 41 from falling out of the sleeve 20.

[0037] In some embodiments, the sleeve 31 and the protrusion 32 are integrally formed and have the same mechanical properties, which avoids the risk of connection failure caused by material differences (such as different coefficients of thermal expansion), ensures the stability of the connection between the sleeve 31 and the protrusion 32, and reduces costs.

[0038] Of course, in some other embodiments, the sleeve 31 is welded to the protrusion 32.

[0039] In some embodiments, the sleeve 31 and the sleeve 20 can be welded or threaded together.

[0040] In some embodiments, the protrusion 32 is triangular, with a base width of 3mm, a distance of 3mm between the apex of the triangle (the end of the protrusion 32 away from the sleeve 31) and the hammer head 42, a distance of 15mm between two adjacent protrusions 32, and a distance of 8mm between the end of the protrusion 32 away from the sleeve 31 and the end connecting the protrusion 32 and the sleeve 31. The sleeve 31 and the protrusion 32 are metallurgically welded together from cast iron. The sleeve 31 has a wall thickness of 2mm. During overhaul of the electrolytic cell, the sleeve 31 is welded and fixed to the sleeve 20. During operation of the electrolytic cell, the descaling effect is significant. The electrolyte shell adhering to the hammer head 42 is scraped by the protrusion 32 and broken into fine electrolyte flakes, which automatically fall into the molten electrolyte in the crater.

[0041] In some embodiments, multiple protrusions 32 form a single-ring structure. The protrusions 32 are trapezoidal in shape, with a 3mm wide head (the end of the protrusion 32 away from the sleeve 31) and a 6mm wide bottom (the end where the protrusion 32 connects to the sleeve 31). The distance between the head of the trapezoid and the hammer 42 is 3mm, the distance between two adjacent protrusions 32 is 8mm, and the distance between the end of the protrusion 32 away from the sleeve 31 and the end where the protrusion 32 connects to the sleeve 31 is 5mm. The sleeve 31 and the protrusions 32 are metallurgically welded together from cast iron. The sleeve 31 has a wall thickness of 2mm. During overhaul of the tank, the sleeve 31 is welded and fixed to the sleeve 20. During the operation of the electrolytic cell, the descaling effect is significant. The electrolyte shell adhering to the hammer 42 is scraped by the protrusions 32 and broken into fine electrolyte flakes, which automatically fall into the molten electrolyte in the crater.

[0042] In some embodiments, multiple protrusions 32 form multiple single-ring structures, with adjacent single-ring structures arranged in parallel. The protrusions 32 are triangular in shape, extending along the axial direction of the sleeve 31. The length of the multiple single-ring structures is 20 mm, the width of the base of the triangle (the end where the protrusion 32 connects to the sleeve 31) is 3 mm, the distance between the head of the protrusion 32 (the end of the protrusion 32 away from the sleeve 31) and the hammer head 42 is 1 mm, the distance between two adjacent protrusions 32 is 5 mm, and the distance between the end of the protrusion 32 away from the sleeve 31 and the end where the protrusion 32 connects to the sleeve 31 is 8 mm. The sleeve 31 and the protrusions 32 are integrally cast from cast iron, with a wall thickness of 2 mm. During overhaul, the sleeve 31 is threaded and fixed to the sleeve 20. During the operation of the electrolytic cell, the descaling effect is significant. The electrolyte shell adhering to the hammer head 42 is scraped by the protrusions 32 and broken into fine electrolyte flakes, which automatically fall into the molten electrolyte in the crater.

[0043] In some embodiments, multiple protrusions 32 form a scattered distributed structure. The protrusions 32 are triangular in shape, with a base width of 3mm (the end where the protrusion 32 connects to the sleeve 31), a head distance of 1mm between the head of the protrusion 32 (the end of the protrusion 32 away from the sleeve 31) and the hammer head 42, and a distance of 6mm between the end of the protrusion 32 away from the sleeve 31 and the end where the protrusion 32 connects to the sleeve 31. The sleeve 31 and the protrusion 32 are integrally metallurgically welded from cast iron. The sleeve 31 has a wall thickness of 2mm. During overhaul, the sleeve 31 is threaded and fixed to the sleeve 20. During the operation of the electrolytic cell, the descaling effect is significant. The electrolyte shell adhering to the hammer head 42 is scraped by the protrusions 32 and broken into fine electrolyte flakes, which automatically fall into the molten electrolyte in the crater.

[0044] In some embodiments, multiple protrusions 32 form a single-ring structure. The protrusions 32 are trapezoidal in shape, with a 3mm wide head (the end of the protrusion 32 furthest from the sleeve 31) and a 6mm wide bottom (the end where the protrusion 32 connects to the sleeve 31). The distance between the head of the trapezoid and the hammer 42 is 3mm, the distance between two adjacent protrusions 32 is 15mm, and the distance between the end of the protrusion 32 furthest from the sleeve 31 and the end where the protrusion 32 connects to the sleeve 31 is 6mm. The sleeve 31 and the protrusions 32 are integrally metallurgically welded from cast iron. The sleeve 31 has a wall thickness of 3mm. During overhaul, the sleeve 31 is threaded and fixed to the sleeve 20. During electrolytic cell operation, the descaling effect is significant. The electrolyte shell adhering to the hammer 42 is scraped by the protrusions 32 and broken into fine electrolyte flakes, which automatically fall into the molten electrolyte in the crater.

[0045] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element 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 application.

[0046] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. 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. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0048] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0049] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A shell-breaking device, characterized in that, include: Feeder; The sleeve is connected to the feeder; A shell remover includes a sleeve and a plurality of spaced protrusions. The sleeve is connected to the end of the tube away from the feeder, and the plurality of protrusions are disposed inside the sleeve. The shell-breaking device is vertically mounted inside the feeder, the sleeve, and the barrel.

2. The shell-breaking device according to claim 1, characterized in that, The distance between the end of the protrusion furthest from the sleeve and the shell-breaking device is less than or equal to 3 mm.

3. The shell-breaking device according to claim 1, characterized in that: The width of the end of the protrusion furthest from the sleeve is greater than or equal to 0 mm and less than or equal to 3 mm; The width of the end of the protrusion that connects to the sleeve is greater than or equal to 3 mm and less than or equal to 15 mm. The distance between the end of the protrusion away from the sleeve and the end where the protrusion connects to the sleeve is greater than or equal to 5 mm and less than or equal to 30 mm.

4. The shell-breaking device according to any one of claims 1-3, characterized in that, The distance between two adjacent protrusions is 5mm to 40mm.

5. The shell-breaking device according to any one of claims 1-3, characterized in that, The shape of the protrusion can be one or more of the following: triangle, trapezoid, square, and arc.

6. The shell-breaking device according to any one of claims 1-3, characterized in that, The protrusions may form a single-ring structure, or the protrusions may form multiple single-ring structures, with two adjacent single-ring structures arranged in parallel, or the protrusions may form a scattered distributed structure, or the protrusions may form a spiral structure.

7. The shell-breaking device according to any one of claims 1-3, characterized in that, The shell-breaking device includes: The hammer rod is vertically mounted inside the feeder, the sleeve, and the bushing; The hammer head is connected to the end of the hammer rod away from the feeder.

8. The shell-breaking device according to claim 7, characterized in that, When the hammer head is in the initial position, the end of the sleeve away from the sleeve is flush with the end of the hammer head away from the hammer rod, or the end of the sleeve away from the sleeve is flush with the diameter-changing part of the hammer head.

9. The shell-breaking device according to claim 7, characterized in that, The end of the hammer rod away from the hammer head is provided with a limiting member, the width of which is greater than the diameter of the sleeve.

10. The shell-breaking device according to any one of claims 1-3, characterized in that, The sleeve and the protrusion are integrally formed.

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