Electrolytic tank crust breaking cylinder mounting hole sealing device

Abstract

This utility model discloses a sealing device for the mounting hole of the shell-breaking cylinder in an electrolytic cell, comprising a baffle plate (1), a positioning plate (2), a vertical cylinder (3), a horizontal cover plate (4), sealing felt (5), a positioning hole (6), and a cylinder mounting hole (7). The device is characterized by: a cylinder mounting hole (7) on the baffle plate (1); the upper end of the vertical cylinder (3) welded to the horizontal cover plate (4); the lower end of the vertical cylinder (3) welded to the baffle plate (1); the positioning plate (2) being movable up and down along the hammer head guide tube (8); and the sealing felt (5) filling the gap between the hammer head guide tube (8) and the vertical cylinder (3). This utility model, through the cooperation of the baffle plate (1), the positioning plate (2), the vertical cylinder (3), and the sealing felt (5), prevents external air from entering the electrolytic cell, reduces the load on the exhaust fan, lowers energy consumption, avoids flue gas escape, and improves the production environment.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrolytic aluminum production process equipment, specifically relating to a sealing device for the mounting hole of the shell-breaking cylinder in an electrolytic cell, used to solve the sealing problem at the mounting hole of the shell-breaking cylinder and prevent air from entering the electrolytic cell or flue gas from escaping. Background Technology

[0002] During aluminum production in an electrolytic cell, a shell-beating cylinder is needed at the feeding port to continuously beat the shell surface, ensuring unobstructed flow and completing the feeding operation. The shell-beating cylinder is installed in the upper structure of the electrolytic cell, and the cylinder hammer guide must pass through the horizontal cover plate. Because the shell-beating cylinder beats the shell every tens of seconds, its frequent operation causes wear and tear on parts such as the cylinder's sealing ring and hammer. Periodically, a crane is needed to lift the shell-beating cylinder out of the electrolytic cell for maintenance and then reinstall it. Due to the strong magnetic field environment within the electrolytic cell, with varying magnetic field strengths at different locations, the shell-beating cylinder is prone to swaying under magnetic force during lifting and installation. Furthermore, the cylinder mounting hole on the horizontal cover plate is far from the operator, making it difficult for the hammer guide to pass through the mounting hole. To ensure the hammer guide tube can smoothly pass through the cylinder mounting hole on the horizontal cover plate of the electrolytic cell during the installation of the shell-breaking cylinder, the diameter of the cylinder mounting hole must be larger than the diameter of the hammer guide tube. This creates a gap between the hammer guide tube and the horizontal cover plate, allowing outside air to enter the electrolytic cell through the cylinder mounting hole during production. This increases the total amount of flue gas inside the cell, increasing the load on the exhaust fan and leading to increased energy consumption. Furthermore, when the negative pressure inside the cell is insufficient, flue gas can escape from the cylinder mounting hole, deteriorating the production environment. Therefore, solving the sealing problem at the shell-breaking cylinder mounting hole of the electrolytic cell—preventing air from entering the cell through the cylinder mounting hole and preventing flue gas from escaping—is of great importance to production. Summary of the Invention

[0003] The purpose of this utility model is to provide a sealing device for the mounting hole of the electrolytic cell shell-breaking cylinder. Through the cooperation of a baffle plate, a positioning plate, a vertical cylinder and sealing felt, the mounting hole is effectively sealed to prevent air from entering or flue gas from escaping.

[0004] The purpose of this utility model and the solution to its main technical problem are achieved by the following technical solution:

[0005] This utility model discloses a sealing device for the mounting hole of an electrolytic cell shell-breaking cylinder, comprising a baffle plate, a positioning plate, a vertical cylinder, a horizontal cover plate, sealing felt, a positioning hole, and a cylinder mounting hole. The baffle plate is provided with a cylinder mounting hole. The upper end of the vertical cylinder is welded to the horizontal cover plate, and the lower end of the vertical cylinder is welded to the baffle plate. The diameter of the positioning plate is larger than that of the cylinder mounting hole and smaller than that of the inner diameter of the vertical cylinder. The positioning plate can move up and down along the hammer head guide tube. The sealing felt fills the gap between the hammer head guide tube and the vertical cylinder.

[0006] The positioning plate is provided with positioning holes, the diameter of which is slightly larger than the diameter of the hammer head guide tube.

[0007] The diameter of the cylinder mounting hole is larger than the diameter of the hammer head guide tube.

[0008] The sealing fleece is a high-temperature resistant fiber material.

[0009] The vertical cylinder has a tubular structure.

[0010] Compared with existing technologies, this utility model has significant advantages. As can be seen from the above technical solution: a cylinder mounting hole is provided on the baffle plate; the upper end of the vertical cylinder is welded to the horizontal cover plate; a baffle plate is welded to the lower end of the vertical cylinder; the diameter of the positioning plate is larger than the cylinder mounting hole and smaller than the inner diameter of the vertical cylinder; the positioning plate can move up and down along the hammer guide tube; and sealing felt fills the gap between the hammer guide tube and the vertical cylinder. The baffle plate is fixed to the lower end of the vertical cylinder and has a cylinder mounting hole with a diameter larger than the hammer guide tube diameter, facilitating the smooth passage of the hammer guide tube during installation. The vertical cylinder has its upper end welded to the horizontal cover plate and its lower end welded to the baffle plate, forming a sealed cavity. The positioning plate can move up and down along the hammer guide tube; its diameter is larger than the cylinder mounting hole diameter to prevent it from falling, but smaller than the inner diameter of the vertical cylinder, allowing it to slide freely inside the cylinder. The sealing felt fills the gap between the hammer guide tube and the vertical cylinder, achieving a seal. The positioning hole is located on the positioning plate and has a diameter slightly larger than the hammer guide tube diameter, used to limit the swing range of the hammer guide tube. By combining baffles, positioning plates, vertical cylinders, and sealing felt, external air is prevented from entering the electrolytic cell, reducing the load on the exhaust fan and lowering energy consumption. This also prevents flue gas from escaping, improving the production environment. The high-temperature resistant sealing felt can operate stably for extended periods, adapting to the high-temperature environment of the electrolytic cell. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a diagram showing the usage state of this utility model;

[0013] Figure 3 yes Figure 2 Enlarged view of point a in the middle;

[0014] Figure 4This is a schematic diagram of the mounting holes for the shell-breaking cylinder in a traditional electrolytic cell.

[0015] 1. Baffle plate, 2. Positioning plate, 3. Vertical cylinder, 4. Horizontal cover plate, 5. Sealing felt, 6. Positioning hole, 7. Cylinder mounting hole, 8. Hammer head guide tube, 9. Shell-breaking cylinder. Detailed Implementation

[0016] The following detailed description, in conjunction with the accompanying drawings and preferred embodiments, describes the specific implementation methods, structure, features, and effects of this utility model.

[0017] The sealing device of this utility model includes a baffle plate 1, a positioning plate 2, a vertical cylinder 3, a horizontal cover plate 4, sealing felt 5, a positioning hole 6, and a cylinder mounting hole 7. The upper end of the vertical cylinder 3 is welded to the horizontal cover plate 4, and the lower end is welded to the baffle plate 1. The baffle plate 1 has a cylinder mounting hole 7, the diameter of which is larger than the diameter of the hammer guide tube 8 for installation. The positioning plate 2 is placed above the baffle plate 1, its diameter being larger than the diameter of the cylinder mounting hole 7 but smaller than the inner diameter of the vertical cylinder 3, allowing the positioning plate 2 to move up and down along the hammer guide tube 8. The positioning plate 2 has a positioning hole 6, the diameter of which is slightly larger than the diameter of the hammer guide tube 8 to limit oscillation. The vertical cylinder 3 has a tubular structure. During installation, the positioning plate 2 is moved to the upper end of the hammer guide tube 8, the direction is adjusted so that the hammer guide tube 8 passes through the cylinder mounting hole 7, the positioning plate 2 slides down into the vertical cylinder 3, and then the sealing felt 5 is filled to block the gaps, achieving a seal.

[0018] During use: Installation stage: The operator lifts the positioning plate 2 to the upper end of the hammer head guide tube 8, holds the positioning plate, and adjusts the direction of the hammer head guide tube to align it with the cylinder mounting hole 7. After the hammer head guide tube 8 passes through the cylinder mounting hole 7, the positioning plate 2 is released, allowing it to slide down the hammer head guide tube under gravity and enter the vertical cylinder 3. Because the diameter of the positioning plate 2 is larger than the diameter of the cylinder mounting hole 7, it will not fall out of the mounting hole but will remain above the baffle plate 1. Sealing stage: The annular gap between the outer wall of the hammer head guide tube 8 and the inner wall of the vertical cylinder 3 above the positioning plate 2 is filled with high-temperature resistant sealing felt 5 to achieve a seal, preventing external air from entering the electrolytic cell or the escape of flue gas from the cell. Dynamic adaptation: When the shell-breaking cylinder 9 is working, the hammer head guide tube 8 will vibrate. The sealing felt 5, due to its flexibility and elasticity, can adapt to this movement and maintain the sealing effect. The positioning hole 6 of the positioning plate 2 limits the swing amplitude of the hammer head guide tube, preventing excessive swinging from affecting the sealing performance.

Claims

1. A sealing device for the mounting hole of an electrolytic cell shell-breaking cylinder, comprising a baffle plate (1), a positioning plate (2), a vertical cylinder (3), a horizontal cover plate (4), sealing felt (5), a positioning hole (6), and a cylinder mounting hole (7), characterized in that: The baffle plate (1) is provided with a cylinder mounting hole (7). The upper end of the vertical cylinder (3) is welded to the horizontal cover plate (4). The lower end of the vertical cylinder (3) is welded with the baffle plate (1). The diameter of the positioning plate (2) is larger than the diameter of the cylinder mounting hole (7). The diameter of the positioning plate (2) is smaller than the inner diameter of the vertical cylinder (3). The positioning plate (2) can move up and down along the hammer head guide tube (8). The sealing felt (5) fills the gap between the hammer head guide tube (8) and the vertical cylinder (3).

2. The sealing device as claimed in claim 1, characterized in that, The positioning plate (2) is provided with a positioning hole (6), the diameter of which is slightly larger than the diameter of the hammer head guide tube (8).

3. The sealing device as described in claim 1, characterized in that, The diameter of the cylinder mounting hole (7) is greater than the diameter of the hammer head guide tube (8).

4. The sealing device as claimed in claim 1, characterized in that, The sealing fleece (5) is a high-temperature resistant fiber material.

5. The sealing device as claimed in claim 1, characterized in that, The vertical cylinder (3) is a tubular structure.

Images