A scraping shell-breaking device for aluminum electrolytic cells

Abstract

This utility model discloses a scraping-type shell-removing device for aluminum electrolysis cells, including a shell-removing hammer, a cylinder, and a scraping mechanism. The scraping mechanism is sleeved on the shell-removing hammer and includes a long scraper, a ring scraper, and a fixing ring. The fixing ring is fixed below the cover plate of the aluminum electrolysis cell. Several long scrapers are arranged along the axis of the shell-removing hammer, and the ring scraper is installed on the inner side of the long scrapers away from the fixing ring. Under the action of the cylinder, the shell-removing hammer moves downward to penetrate the covering material. Then, when the cylinder drives the shell-removing hammer to retract and move upward, the long scraper scrapes and cleans the large pieces of adhesive material on the shell-removing hammer. When the shell-removing hammer continues to move upward, the ring scraper scrapes and cleans the remaining adhesive material a second time. The two scraping and cleaning processes result in a cleaner removal of the adhesive material, and the overall structure is simple and occupies little space.

Description

Technical Field

[0001] This utility model relates to the field of aluminum electrolysis technology, specifically to a scraping shell-breaking device for aluminum electrolysis cells. Background Technology

[0002] An aluminum electrolytic cell is equipment used in aluminum smelting plants to produce molten aluminum from alumina through electrolysis. During the smelting process, a layer of insulating material covers the anode carbon blocks. When alumina is added to the electrolytic cell via a feeder, a feeding hole needs to be punched through the covering material. The function of the shell-breaking device is to complete this task. A shell-breaking hammer is installed at the lower end of the device. The cylinder of the device drives the hammer to move up and down, thus breaking through the covering material. The shell-breaking hammer is generally made of Q235 stainless steel, stainless steel, or high-temperature and wear-resistant materials. During the striking process, the hammer is immersed in the molten aluminum, and the molten aluminum adheres to the hammer. These adhered deposits need to be cleaned.

[0003] The adhesion to the shell-breaking hammerhead is usually cleaned manually by electrolytic cell operators on a regular basis. However, since the electrolytic cell operates at temperatures above 950℃, there is a risk of high-temperature burns. At the same time, the electrolytic cell generates a very strong magnetic field environment during operation, making it difficult to operate the cleaning tools. Due to the high risk and difficulty of manually cleaning the adhesion to the shell-breaking hammerhead, as major aluminum electrolytic plants continue to improve their safety awareness, there is a need to develop a dedicated online adhesion cleaning device. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a scraping-type shell-removing device for aluminum electrolysis cells, enabling online cleaning of adhered packages and reducing the difficulty of manual cleaning.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a scraping shell-breaking device for an aluminum electrolytic cell, comprising a shell-breaking hammer, a cylinder, and a scraping mechanism. The scraping mechanism is sleeved on the shell-breaking hammer and includes a long scraping blade, a ring scraping blade, and a fixing ring. The fixing ring is fixed below the cell cover plate of the aluminum electrolytic cell. There are several long scraping blades arranged along the axial direction of the shell-breaking hammer. The ring scraping blade is installed on the inner side of the long scraping blade away from the fixing ring.

[0006] Preferably, the angle between the scraping end of the elongated scraper and the axis of the shell-beating hammer is 30° to 60°.

[0007] Preferably, there are three elongated scrapers.

[0008] Preferably, the annular scraper is circular or polygonal.

[0009] Preferably, an alumina feeding pipe is installed on the cover plate of the aluminum electrolysis cell, and the outlet of the alumina feeding pipe is inclined downward toward the shell-breaking hammer.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the shell-breaking hammer head moves downward under the action of the cylinder to break through the covering material. Then, when the cylinder drives the shell-breaking hammer head to retract and move upward, the long scraper blade scrapes and cleans the large pieces of adhesive material on the shell-breaking hammer head. When the shell-breaking hammer head continues to move upward, the ring scraper blade scrapes and cleans the remaining adhesive material a second time. The two scraping and cleaning processes make the adhesive material more cleanly removed. Moreover, the overall structure is simple and occupies little space. Attached Figure Description

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

[0012] Figure 2 This is a schematic diagram of the installation of the scraping mechanism of this utility model;

[0013] Figure 3 for Figure 2 The left view;

[0014] Figure 4 This is a schematic diagram of the structure of a long scraper.

[0015] In the diagram: 1. Long scraper; 2. Ring scraper; 3. Fixing ring; 4. Shell-breaking hammer; 5. Alumina feed pipe; 6. Cylinder; 7. Slot cover plate. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0017] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0018] Example 1

[0019] like Figures 1 to 4 As shown, this utility model provides a scraping shell-breaking device for aluminum electrolytic cells, including a shell-breaking hammer head 4, a cylinder 6, and a scraping mechanism. The scraping mechanism is sleeved on the shell-breaking hammer head 4 and includes a long scraping blade 1, an annular scraping blade 2, and a fixing ring 3. The fixing ring 3 is fixed below the cell cover plate 7 of the aluminum electrolytic cell. There are several long scraping blades 1 arranged along the axial direction of the shell-breaking hammer head 4. The annular scraping blade 2 is installed on the inner side of the long scraping blade 1 away from the fixing ring.

[0020] Specifically, the shell-breaking hammer 4 moves downward under the action of the cylinder 6 to break through the covering material. Then, when the cylinder 6 drives the shell-breaking hammer 4 to retract and move upward, the long scraper 1 scrapes and cleans the large pieces of adhesive on the shell-breaking hammer 4. When the shell-breaking hammer 4 continues to move upward, the ring scraper 2 scrapes and cleans the remaining adhesive again. The two scraping and cleaning processes make the adhesive more clean and the overall structure is simple and occupies little space.

[0021] Furthermore, the angle between the scraping end of the elongated scraper 1 and the axis of the shell-breaking hammer 4 is 30° to 60°, and there are three elongated scraper 1s. This structure allows for better scraping of large pieces of adhesive material, and the gap between the scraping end and the shell-breaking hammer 4 gradually increases, facilitating the removal of adhesive material and reducing the likelihood of the shell-breaking hammer getting stuck.

[0022] Furthermore, the annular scraper 2 is circular or polygonal. By setting the annular scraper 2, small pieces of adhesive can be cleaned. The polygonal annular design also allows for more contact angles, further improving the scraping effect.

[0023] Furthermore, an alumina feeding pipe 5 is installed on the cover plate 7 of the aluminum electrolytic cell, and the outlet of the alumina feeding pipe 5 is tilted downward toward the shell-breaking hammer head 4. After the shell-breaking hammer head 4 rises to the position, the alumina feeding pipe 5 adds alumina into the electrolytic cell through the aforementioned punched feeding hole.

[0024] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. An aluminium electrolytic cell with a doctoring-type crust breaking device, characterised in that, It includes a shell-beating hammer (4), a cylinder (6) and a scraping mechanism. The scraping mechanism is sleeved on the shell-beating hammer (4) and includes a long scraper (1), a ring scraper (2) and a fixing ring (3). The fixing ring (3) is fixed below the tank cover plate (7) of the aluminum electrolysis cell. There are several long scrapers (1) arranged along the axis of the shell-beating hammer (4). The ring scraper (2) is installed on the inner side of the long scraper (1) away from the fixing ring.

2. An aluminium cell scratcher according to claim 1 wherein, The angle between the scraping end of the elongated scraper (1) and the axis of the shell-beating hammer (4) is 30° to 60°.

3. An aluminium cell scratcher according to claim 1 wherein, There are 3 long scrapers (1).

4. An aluminium cell scratcher according to claim 1 wherein, The annular scraper (2) is circular or polygonal.

5. An aluminium cell scratcher according to claim 1 wherein, An alumina feed pipe (5) is installed on the cover plate (7) of the aluminum electrolysis cell, and the outlet of the alumina feed pipe (5) is tilted downward toward the shell-breaking hammer (4).

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