A kind of aluminum electrolysis cell cathode steel rod derusting and sand milling device

Abstract

The utility model relates to steel bar rust removal sand milling technical field, a kind of aluminium electrolysis cell cathode steel bar rust removal sand milling device, the utility model in sand washing operation scene, to reduce the influence of dust, great suction is generated after air pump starts, directional airflow passage is formed by air guide pipe, when dust produced by sand washing is raised, it will be driven by this air, guided to the front of filter plate, and then be sucked into air guide pipe, realize the directional absorption and discharge of dust, avoid its diffusion pollution environment, simultaneously, the sand scraping mechanism equipped with system does not need additional power, just with the airflow formed by air pump suction, fan blade can be driven to rotate, drive the scraper connected therewith to continuously sweep the surface of filter plate, clean accumulated sand washing impurities in time, ensure that system continues efficient operation, and by air pump, the gas sucked is re-entered into spray gun, while continuously treating dust generated inside, without affecting its working capacity, greatly reduce energy loss.

Description

Technical Field

[0001] This utility model relates to the field of steel bar rust removal and sand milling technology, specifically a rust removal and sand milling device for cathode steel bars in aluminum electrolysis cells. Background Technology

[0002] The cathode steel rod of an aluminum electrolysis cell is a core conductive component in aluminum electrolysis production. Its function is to efficiently introduce direct current into the aluminum liquid, driving aluminum ions to be reduced to metallic aluminum on the cathode surface. At the same time, through optimized structural design, it reduces power loss, improves current efficiency, significantly reduces direct current consumption, extends the life of the cell, and reduces carbon emissions, promoting the industry's green and low-carbon transformation. After use, the cathode steel rod of the aluminum electrolysis cell needs to be derusted to thoroughly remove rust products, oxide scale, and embedded impurities from the surface of the steel rod, restoring its metallic luster and flatness. This ensures a low-resistance, high-stability conductive connection between the steel rod and the cathode carbon block, thereby ensuring uniform current transmission, reducing energy consumption in the electrolysis process, and extending the overall service life of the electrolysis cell.

[0003] In the current sand washing process, a large amount of dust and ash is generated. When the sand washing equipment is running, the high-speed sand particles rub and collide with the surface of the cathode steel rod. While a large amount of rust and impurities are peeled off, a large amount of dust is raised. This dust fills the work space, which will interfere with the operator's vision, making it difficult for them to control the progress and quality of sand washing, increasing the risk of operational errors. In addition, the large-scale spread of dust will quickly pollute the entire working environment. Utility Model Content

[0004] The purpose of this invention is to provide a sand milling device for removing rust from cathode steel rods in aluminum electrolysis cells, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sand milling device for removing rust from cathode steel rods in an aluminum electrolysis cell, comprising a sand washing mechanism body, a fixing block fixed in the inner cavity of the sand washing mechanism body for support, an air pump for providing power fixed on the surface of the fixing block, an air guide pipe for conveying gas fixed on the surface of the fixing block, a filter plate for filtering used sand in the inner cavity of the sand washing mechanism body, and a sand scraping mechanism for scraping off sand adhering to the surface of the filter plate.

[0006] Preferably, the sand scraping mechanism includes a scraper that slides on the surface of the filter plate, one end of the scraper is fixed with a rotating shaft, one end of the rotating shaft is fixed with a limit block, and the surface of the rotating shaft is fixed with fan blades.

[0007] Preferably, the filter holes on the surface of the filter plate have a diameter of 0.1 mm and are evenly distributed on its surface.

[0008] Preferably, the surface of the rotating shaft has a fixed ring, and the surface of the fixed ring is fixed with a plurality of fixed rods.

[0009] Preferably, the air pump is a large-diameter air pressure pump, which can pass through a spacing of 0.6 mm.

[0010] Preferably, a collection frame is fixed inside the body of the sand washing mechanism, and the collection frame is frustum-shaped.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In sand washing operations, this invention utilizes a powerful air pump to reduce dust impact. The pump generates strong suction, creating a directional airflow channel through the air duct. Dust generated during sand washing is drawn up by this airflow and directed towards the filter plate, where it is then sucked into the air duct. This directional absorption and discharge of dust prevents its spread and environmental pollution. Simultaneously, the system's scraping mechanism requires no additional power; the airflow generated by the pump drives the fan blades to rotate, causing the connected scraper to continuously sweep the filter plate surface, promptly cleaning accumulated sand washing impurities and ensuring continuous, efficient system operation. Furthermore, the pump re-injects the sucked-in air into the spray gun, continuously processing internal dust without affecting its working capacity, significantly reducing energy consumption. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention; Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the present invention; Figure 4 In this utility model Figure 3 Enlarged view of point A.

[0013] In the diagram: 1. Sand washing mechanism body; 2. Fixing block; 3. Air pump; 4. Air guide pipe; 5. Filter plate; 6. Sand scraping mechanism; 61. Scraper; 62. Rotating shaft; 63. Limiting block; 64. Fan blade; 7. Fixing ring; 8. Fixing rod; 9. Collection frame. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0015] Please see Figure 1-4As shown, a sand milling device for removing rust from cathode steel rods in an aluminum electrolysis cell includes a sand washing mechanism body 1. A collection frame 9, shaped like a frustum, is fixed inside the sand washing mechanism body 1 to collect used sand, reducing dead corners and enhancing dust absorption. A fixing block 2 is fixed inside the sand washing mechanism body 1 for fixing certain parts of the device. An air pump 3, a large-diameter air pressure pump, is fixed to the surface of the fixing block 2. A filter plate 5 is installed inside the sand washing mechanism body 1. The filter plate 5 has 0.1 mm diameter filter holes evenly distributed on its surface, filtering out sand as much as possible without affecting the airflow and preventing it from entering the filter plate 4. The surface of the filter plate 5 is provided with a sand scraping mechanism 6, which includes a scraper 61 that slides on the surface of the filter plate 5. One end of the scraper 61 is fixed with a rotating shaft 62. A fixing ring 7 is rotatably mounted on the surface of the rotating shaft 62. Several fixing rods 8 are fixed on the surface of the fixing ring 7 to provide support for the rotation of the fan blade 64 and prevent the fan blade 64 from becoming unstable due to sand while rotating. One end of the rotating shaft 62 is fixed with a limit block 63, and the fan blade 64 is fixed on the surface of the rotating shaft 62. When the air pump 3 starts to work, the airflow flows through the air guide pipe 4. When it passes the fan blade 64, it will rotate due to the shape of the fan blade 64, which will drive the rotating shaft 62 fixed to it to rotate. At the same time, the scraper 61 at the other end begins to slide on the surface of the filter plate 5. Without additional power, it continuously scrapes off the sand that is attached to the surface of the filter plate 5 by suction, preventing sand from accumulating and causing blockage, reducing the dust collection rate, and removing the sand attached to the surface of the filter plate 5 to prevent sand accumulation from reducing suction power.

[0016] Working principle: When sand washing is performed, the operator turns on the air pump 3. The suction generated by the air pump 3 draws the dust generated by sand washing inside the sand washing mechanism body 1 downwards. When it reaches the front of the filter plate 5, it is sucked into the air guide pipe 4, thus completing the absorption of dust and reducing the pollution of the working environment caused by a large amount of dust. At the same time, the absorbed dust is accelerated again by the air pump 3 and enters the spray gun to continue the sand washing process, saving energy. Due to the airflow, the airflow acts on the surface of the fan blade 64. With the support of the fixing ring 7 and the fixing rod 8, the fan blade 64 begins to rotate. At the same time, the scraper 61 fixed to the other end of the rotating shaft 62 rotates continuously. Without the need for additional power support, it sweeps off the sand attached to the surface of the filter plate 5, avoiding the obstruction of airflow due to excessive sand adsorption, reducing the dust collection efficiency, and greatly reducing the accumulation of dust.

[0017] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A sand milling device for removing rust from cathode steel rods in an aluminum electrolysis cell, comprising a sand washing mechanism body (1), characterized in that, Also includes: A fixed block (2) is fixed to the inner cavity of the sand washing mechanism body (1) for support. An air pump (3) for providing power is fixed on the surface of the fixed block (2). An air guide pipe (4) for conveying gas is fixed on the surface of the fixed block (2). A filter plate (5) for filtering the used sand is provided in the inner cavity of the sand washing mechanism body (1). A sand scraping mechanism (6) for scraping off the sand attached to the surface of the filter plate (5) is provided on the surface of the filter plate (5).

2. The rust removal and sand milling device for cathode steel rods in aluminum electrolysis cells according to claim 1, characterized in that: The sand scraping mechanism (6) includes a scraper (61) that slides on the surface of the filter plate (5). One end of the scraper (61) is fixed with a rotating shaft (62), one end of the rotating shaft (62) is fixed with a limit block (63), and the surface of the rotating shaft (62) is fixed with a fan blade (64).

3. The rust removal and sand milling device for cathode steel rods in aluminum electrolysis cells according to claim 1, characterized in that: The filter plate (5) has filter holes with a diameter of 0.1 mm on its surface, and these holes are evenly distributed on its surface.

4. The rust removal and sand milling device for cathode steel rods in an aluminum electrolysis cell according to claim 2, characterized in that: The surface of the rotating shaft (62) has a fixed ring (7) that rotates, and the surface of the fixed ring (7) has a plurality of fixed rods (8) fixed thereon.

5. The rust removal and sand milling device for cathode steel rods in aluminum electrolysis cells according to claim 1, characterized in that: The air pump (3) is a large-diameter air pressure pump that can pass through a spacing of 0.6 mm.

6. The rust removal and milling device for cathode steel rods in an aluminum electrolysis cell according to claim 1, characterized in that: The inner cavity of the sand washing mechanism body (1) is fixed with a collection frame (9), which is frustum-shaped.

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