Graphitized cathode carbon block for aluminum electrolysis cell

Abstract

The utility model discloses a graphitized cathode carbon block for an aluminum electrolysis cell, which comprises a cathode carbon block, a mounting groove arranged below the cathode carbon block, a cathode steel bar arranged in the mounting groove, a limiting groove arranged in the mounting groove, a limiting plate arranged in the limiting groove, a fixing screw arranged on the surface of the limiting plate, and a fixing hole arranged in the limiting groove. Fixing holes are formed in the cathode steel bar, fixing screws are arranged in the fixing holes in a threaded mode, positioning blocks are slidably connected to the limiting plate and arranged on the two sides of the cathode steel bar, the cathode steel bar is limited through the limiting plate, the limiting plate is fixed through the fixing screws, the positioning blocks are arranged between the cathode steel bar and the mounting groove, and therefore the cathode steel bar can be transversely limited; the cathode steel bar positioning device has the advantages that the positioning of the cathode steel bar is completed, the situation that the assembly quality and efficiency are affected due to the fact that workers need to repeatedly measure and adjust the position of the cathode steel bar in the carbon paste tamping process is avoided, and the cathode steel bar positioning device has the advantages of being high in practicability and capable of positioning the cathode steel bar in the carbon paste tamping process.

Description

Technical Field

[0001] The utility model relates to the technical field of cathode carbon blocks, in particular to a graphitized cathode carbon block for an aluminum electrolytic cell. Background Art

[0002] Cathode carbon block refers to a carbon block made of high-quality anthracite, coke, graphite, etc., which is used as the cathode of the aluminum electrolytic cell. It is built at the bottom of the electrolytic cell and is also called the bottom carbon block. It is an important part of the aluminum electrolytic cell, which is beneficial to energy saving in aluminum electrolysis production and improving the life of the electrolytic cell. The cathode carbon block plays a dual role of conducting electricity and forming the inner lining of the electrolytic cell.

[0003] In the process of assembling cathode carbon blocks and steel rods, casting and carbon-intercalation paste are usually used for connection. The so-called carbon-intercalation paste refers to an assembly method in which the cathode carbon blocks and cathode conductive steel rods are connected as a whole using a carbon paste drill or a paste tying machine. That is, the steel rod is placed in the groove at the bottom of the cathode carbon block, and then the carbon paste is rammed. After the steel rod and the cathode carbon block are assembled, the center of the steel rod must coincide with the center of the cathode carbon block, with a deviation of no more than 4mm. The total length deviation of the steel rod after assembly is no more than 15mm. In the process of ramming the carbon paste, the position of the steel rod needs to be repeatedly measured and adjusted, which affects the assembly quality and efficiency.

[0004] Therefore, it is necessary to design a graphitized cathode carbon block for an aluminum electrolytic cell that is highly practical and can position the cathode steel rod during the ramming of the carbon paste. Utility Model Content

[0005] The utility model aims to provide a graphitized cathode carbon block for an aluminum electrolytic cell to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a graphitized cathode carbon block for an aluminum electrolytic cell, comprising a cathode carbon block for constituting an aluminum electrolytic cell, the lower surface of the cathode carbon block being symmetrically provided with mounting grooves, cathode steel bars being installed in the mounting grooves, the cathode steel bars being electrically connected to the cathode busbar, the inner side walls of the mounting grooves being symmetrically provided with a plurality of limit grooves, and the limit grooves being connected to the lower surface of the cathode carbon block, each pair of the limit grooves being slidably connected with a limit plate, the lower surface of the limit plate being symmetrically penetrated with fixing screws being slidably connected, the upper end surfaces of the limit grooves being provided with fixing holes, the fixing screws being threadedly connected in the fixing holes, the upper surfaces of the limit plates being symmetrically provided with T-shaped slide grooves, the T-shaped slide grooves being slidably connected with T-shaped sliders, the upper surfaces of the T-shaped sliders being fixedly connected with positioning blocks, and each pair of the positioning blocks being respectively arranged on both sides of the cathode steel bar.

[0007] According to the above technical solution, the space between the cathode steel rod and the mounting groove is used to fill the carbon paste that can connect the cathode carbon block and the cathode steel rod.

[0008] According to the above technical solution, the height of the limiting plate is smaller than the height of the limiting groove.

[0009] According to the above technical solution, the thickness of the upper end of the positioning block is smaller than the thickness of the lower end of the positioning block.

[0010] According to the above technical solution, the lower surface of the limiting plate is symmetrically provided with screw grooves, and the lower ends of the fixing screws are located in the screw grooves.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are as follows: the utility model, by providing a cathode carbon block, the cathode carbon block can be directly used as a cathode lining and a conductive material, making it an important component of the aluminum electrolytic cell; two mounting grooves are provided on the lower surface of the cathode carbon block, and both ends of the mounting grooves are connected to the two end surfaces of the cathode carbon block; the two cathode steel bars are assembled with the cathode carbon block through the mounting grooves, and the cross-sectional profiles of the cathode steel bars and the mounting grooves are both rectangular; when the cathode steel bars are electrically connected to the cathode busbar, a cathode circuit of the aluminum electrolytic cell can be formed; the limiting grooves correspond to each other in pairs and are evenly arranged on the two inner side walls of the mounting grooves; the limiting plates can be slidably connected into the limiting grooves from below, so that the two ends of the limiting plates are respectively located in the two opposite limiting grooves; when the limiting plates are located in the limiting grooves, the cathode steel bars can be fixed in the mounting grooves, thereby playing a limiting role; fixing screws are provided at both ends of the limiting plate, and internal threads are provided in the fixing holes, and the positions of the fixing holes correspond one to one with the positions of the fixing screws; when the staff inserts the fixing screws into the surface of the limiting plate and makes the fixing screws When the screw enters the fixing hole, the fixing screw can fix the limit plate in the limit groove, thereby fixing the cathode steel rod. Each limit plate surface is provided with two T-shaped grooves, and the T-shaped sliders can move in the T-shaped grooves. The positioning block moves with the T-shaped sliders, thereby realizing lateral movement on the surface of the limit plate. When the cathode steel rod is located in the installation groove and the limit plate moves upward, the two positioning blocks will be respectively on both sides of the cathode steel rod and stuck between the cathode steel rod and the installation groove, thereby lateral limiting the cathode steel rod. The cathode steel rod and the cathode carbon block are installed through the installation groove, the cathode steel rod is vertically limited by the cooperation of the limit plate and the limit groove, the limit plate is fixed by screwing the fixing screw in the fixing hole, and the sliding of the positioning block is achieved through the T-shaped slide groove and the T-shaped slider. The positioning block is set between the cathode steel rod and the installation groove to limit the cathode steel rod laterally, thereby completing the positioning of the cathode steel rod, avoiding the need for workers to repeatedly measure and adjust the position of the cathode steel rod during the tamping of carbon paste, thereby affecting the assembly quality and efficiency.

[0012] The cathode steel rod and cathode carbon block are connected by a carbon paste tamping method. The cathode carbon block and the cathode steel rod can be assembled by filling the carbon paste between the installation groove and the cathode steel rod, so that the cathode carbon block and the cathode steel rod are connected as a whole.

[0013] Both ends of the adopted limiting plate can completely enter the limiting groove, which can prevent the surface of the limiting plate from protruding from the lower surface of the cathode carbon block.

[0014] The cross-sectional profile of the positioning block used is a triangle, which can facilitate the positioning block to be inserted between the cathode steel rod and the installation groove, thereby facilitating the positioning of the cathode steel rod.

[0015] The adopted screw groove profile is consistent with the profile of the nail cap on the fixing screw. When the fixing screw is inserted into the fixing hole, the nail cap on the fixing screw will enter the screw groove, thereby preventing the fixing screw from protruding from the limiting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a main structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the limit plate structure of the utility model;

[0020] In the figure: 1- cathode carbon block, 2- mounting groove, 3- cathode steel rod, 4- limiting groove, 5- limiting plate, 6- fixing screw, 7- fixing hole, 8- T-shaped slide groove, 9- T-shaped slide block, 10- positioning block, 11- screw groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3The utility model provides a technical solution: a graphitized cathode carbon block for an aluminum electrolytic cell, comprising a cathode carbon block 1 for constituting an aluminum electrolytic cell, wherein the lower surface of the cathode carbon block 1 is symmetrically provided with mounting grooves 2, and cathode steel bars 3 are installed in the mounting grooves 2, and the two cathode steel bars 3 are assembled with the cathode carbon block 1 through the mounting grooves 2, and the cross-sectional profiles of the cathode steel bars 3 and the mounting grooves 2 are both rectangular, and the cathode steel bars 3 are electrically connected to the cathode busbar to form a cathode circuit of the aluminum electrolytic cell, and the inner side walls of the mounting grooves 2 are symmetrically provided with a plurality of limiting grooves 4, and the limiting grooves 4 are connected to the lower surface of the cathode carbon block 1, and each pair of limiting grooves 4 are slidably connected together. There is a limiting plate 5. When the limiting plate 5 is located in the limiting groove 4, the cathode steel bar 3 can be fixed in the installation groove 2, so as to play a limiting role. The lower surface of the limiting plate 5 is symmetrically penetrated and slidably connected with fixing screws 6. The upper end surface of the limiting groove 4 is provided with fixing holes 7. The fixing screws 6 are threadedly connected in the fixing holes 7. The fixing screws 6 are arranged at both ends of the limiting plate 5. The fixing holes 7 are provided with internal threads, and the positions of the fixing holes 7 correspond to the positions of the fixing screws 6. When the staff inserts the fixing screws 6 into the surface of the limiting plate 5 and makes the fixing screws 6 enter the fixing holes 7, the fixing screws 6 can fix the limiting plate 5 in the limiting groove 4, so as to play a limiting role. In order to fix the cathode steel bar 3, the upper surface of the limiting plate 5 is symmetrically provided with T-shaped slots 8, and the T-shaped slots 8 are slidably connected with T-shaped sliders 9. Each surface of the limiting plate 5 is provided with two T-shaped slots 8, and the T-shaped sliders 9 can move in the T-shaped slots 8. The upper surface of the T-shaped sliders 9 is fixedly connected with positioning blocks 10, and the positioning blocks 10 move with the T-shaped sliders 9, so as to realize lateral movement on the surface of the limiting plate 5. Each pair of the positioning blocks 10 are respectively arranged on both sides of the cathode steel bar 3. When the cathode steel bar 3 is located in the installation groove 2 and the limiting plate 5 moves upward, the two positioning blocks 10 will be respectively on both sides of the cathode steel bar 3 and stuck in the cathode. The cathode steel rod 3 is positioned between the cathode steel rod 3 and the mounting groove 2, thereby limiting the cathode steel rod 3 laterally. The cathode steel rod 3 and the cathode carbon block 1 are installed through the mounting groove 2. The cathode steel rod 3 is vertically limited by the cooperation of the limiting plate 5 and the limiting groove 4. The limiting plate 5 is fixed by screwing the fixing screw 6 into the fixing hole 7. The sliding of the positioning block 10 is achieved through the T-shaped slide groove 8 and the T-shaped slider 9. The positioning block 10 is set between the cathode steel rod 3 and the mounting groove 2 to limit the cathode steel rod 3 laterally, thereby completing the positioning of the cathode steel rod 3, avoiding the need for staff to repeatedly measure and adjust the position of the cathode steel rod 3 during the tamping of the carbon paste, thereby affecting the assembly quality and efficiency.

[0023] Specifically, the space between the cathode steel rod 3 and the mounting groove 2 is used to fill the carbon paste that can connect the cathode carbon block 1 and the cathode steel rod 3 .

[0024] The cathode steel rod 3 and cathode carbon block 1 are connected by carbon paste ramming method. The cathode carbon block 1 and cathode steel rod 3 can be assembled by filling carbon paste between the mounting groove 2 and the cathode steel rod 3, so that the cathode carbon block 1 and cathode steel rod 3 are connected as a whole.

[0025] Specifically, the height of the limiting plate 5 is smaller than the height of the limiting groove 4 .

[0026] Both ends of the limiting plate 5 can completely enter the limiting groove 4, which can prevent the surface of the limiting plate 5 from protruding from the lower surface of the cathode carbon block 1.

[0027] Specifically, the thickness of the upper end of the positioning block 10 is smaller than the thickness of the lower end of the positioning block 10 .

[0028] The cross-sectional profile of the positioning block 10 is triangular, which makes it easy to insert the positioning block 10 between the cathode steel bar 3 and the mounting groove 2, thereby facilitating the positioning of the cathode steel bar 3.

[0029] Specifically, the lower surface of the limiting plate 5 is symmetrically provided with screw grooves 11 , and the lower ends of the fixing screws 6 are located in the screw grooves 11 .

[0030] The profile of the screw groove 11 is consistent with the profile of the nail cap on the fixing screw 6. When the fixing screw 6 is inserted into the fixing hole 7, the nail cap on the fixing screw 6 will enter the screw groove 11, thereby preventing the fixing screw 6 from protruding from the limiting plate 5.

[0031] Working principle: When in use, the utility model places the cathode steel rod 3 in the mounting groove 2, and then makes the two ends of the limit plate 5 enter the limit groove 4. At this time, the two positioning blocks 10 enter the gap between the cathode steel rod 3 and the mounting groove 2, and passes the fixing screw 6 through the limit plate 5, and inserts the fixing screw 6 into the fixing hole 7. At this time, the nail cap on the fixing screw 6 is located in the screw groove 11, thereby fixing the limit plate 5 in the limit groove 4. At this time, the cathode steel rod 3 is fixed in the mounting groove 2, and the carbon paste is filled between the cathode steel rod 3 and the mounting groove 2 to complete the assembly of the cathode steel rod 3 and the cathode carbon block 1.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A graphitized cathode carbon block for an aluminum electrolytic cell, comprising a cathode carbon block (1) for constituting an aluminum electrolytic cell, characterized in that: The lower surface of the cathode carbon block (1) is symmetrically provided with mounting grooves (2), and cathode steel bars (3) are installed in the mounting grooves (2). The cathode steel bars (3) are electrically connected to the cathode busbar. The inner side wall of the mounting groove (2) is symmetrically provided with a plurality of limit grooves (4), and the limit grooves (4) are connected to the lower surface of the cathode carbon block (1). Each pair of the limit grooves (4) is slidably connected to a limit plate (5), and the lower surface of the limit plate (5) is symmetrically penetrated by a sliding The limiting plate (5) is symmetrically provided with a T-shaped slide groove (8), and a T-shaped slider (9) is slidably connected in the T-shaped slide groove (8). The upper surface of the T-shaped slider (9) is fixedly connected with a positioning block (10), and each pair of the positioning blocks (10) is respectively arranged on both sides of the cathode steel rod (3).

2. The graphitized cathode carbon block for aluminum electrolysis cell according to claim 1, characterized in that: The space between the cathode steel rod (3) and the mounting groove (2) is used to fill carbon intercalation paste that can connect the cathode carbon block (1) and the cathode steel rod (3).

3. The graphitized cathode carbon block for aluminum electrolysis cell according to claim 2, characterized in that: The height of the limiting plate (5) is smaller than the height of the limiting groove (4).

4. The graphitized cathode carbon block for aluminum electrolysis cell according to claim 3, characterized in that: The thickness of the upper end of the positioning block (10) is smaller than the thickness of the lower end of the positioning block (10).

5. The graphitized cathode carbon block for aluminum electrolysis cell according to claim 4, characterized in that: The lower surface of the limiting plate (5) is symmetrically provided with screw grooves (11), and the lower ends of the fixing screws (6) are located in the screw grooves (11).

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