Crucible cleaning and spraying device and segregation method purification system

Abstract

The invention relates to a crucible cleaning and spraying device and a segregation method purification system. The crucible cleaning and spraying device comprises a crucible cleaning assembly comprising a scraping and sweeping piece, and the crucible cleaning assembly is arranged on a cleaning station and used for cleaning the inner surface and the bottom face of a crucible; the crucible spraying assembly comprises a spray head and a spraying liquid container, the spray head is connected with the spraying liquid container, the crucible spraying assembly is arranged on the spraying station and used for spraying the crucible cleaned by the crucible cleaning assembly, and the cleaning station and the spraying station are arranged adjacently; and the dust removal assembly comprises a dust cover, and the dust cover is arranged above the cleaning station and the spraying station and used for covering the crucible cleaning assembly and the crucible spraying assembly. According to the crucible cleaning and spraying device and the segregation method purification system, the crucible cleaning and spraying efficiency and consistency can be improved, and environmental pollution can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of a crucible cleaning and spraying device and a fractional distillation purification system, and particularly relates to a crucible cleaning and spraying device and a fractional distillation purification system. BACKGROUND

[0002] Fractional distillation purification technology is one of important methods for producing high-purity aluminum. In this process, the purification crucible plays a key role as a core container in the purification process. The role of the crucible is not only to contain the aluminum liquid, but also to ensure the smooth progress of the purification process. The quality of the inner surface and the bottom surface directly affects the purification effect and the purity of the final product. Since the crucible needs to be recycled in production, after each production is completed, when the crucible is separated from the crucible ingot, the inner surface and the bottom surface of the crucible must be thoroughly cleaned and treated. In order to ensure the performance of the crucible in the next production, the surface of the crucible needs to be sprayed with a special barrier and release mixed solution again. The quality of the cleaning and spraying process is crucial, not only affecting the quality of the crucible ingot in the purification process, but also directly related to the service life of the crucible. If the quality of the cleaning and spraying does not meet the standards, it may cause the residues of pollutants on the inner wall of the crucible in the purification process, affecting the purity of the aluminum ingot, even shortening the service life of the crucible and increasing the production cost.

[0003] The cleaning and spraying process of the crucible usually needs to use a crane to hoist the crucible to a dump of a cleaning / spraying placement position, then tilt the dump to make the crucible in a 180° direction; use a broom, a skin shovel and other crucible cleaning tools to clean and scrape the inner wall and the bottom of the crucible, scrape off the impurities and debris adhered to the inner wall and the bottom of the crucible, collect the swept-out crucible, then use a long rod spray gun to extend into the crucible, move and rotate the spray gun to spray the bottom and the inner wall surface of the crucible, after the spraying is completed, tilt the dump to make the crucible in a 90° direction, then use the crane to hoist the crucible back to standby. In this process, a large amount of dust is generated, and the operation relies heavily on manual operation. The cleaning and spraying consistency is poor, the efficiency is low, and the environmental pollution is serious. SUMMARY

[0004] Therefore, it is necessary to provide a crucible cleaning and spraying device and a fractional distillation purification system for improving the efficiency and consistency and reducing environmental pollution, aiming at the problems of poor consistency and serious environmental pollution in the cleaning and spraying process of the crucible.

[0005] In a first aspect, a crucible cleaning and spraying device is provided, comprising:

[0006] A crucible cleaning assembly comprising a scraping and sweeping member, the crucible cleaning assembly is arranged on a cleaning station and used for cleaning the inner surface and the bottom surface of the crucible.

[0007] A crucible spraying assembly comprises a spraying head and a spraying liquid container, the spraying head is connected with the spraying liquid container, the crucible spraying assembly is arranged on a spraying station and used for spraying the crucible cleaned by the crucible cleaning assembly, wherein the cleaning station and the spraying station are arranged adjacently.

[0008] A dust removal assembly comprises a dust cover, the dust cover is arranged above the cleaning station and the spraying station and used for covering the crucible cleaning assembly and the crucible spraying assembly.

[0009] In one of the embodiments, the crucible cleaning assembly comprises a first cover and a first dust collector, the first cover is used for covering the opening of the crucible, so that a first cleaning space is formed between the first cover and the inner wall of the crucible, the first cover is provided with a first dust suction port, the first dust collector is communicated with the first cleaning space through the first dust suction port and used for collecting impurities and dust in the cleaning space.

[0010] In one of the embodiments, the crucible spraying assembly comprises a second cover and a second dust collector, the second cover is used for covering the opening of the crucible, so that a second cleaning space is formed between the second cover and the inner wall of the crucible, the second cover is provided with a second dust suction port, the second dust collector is communicated with the second cleaning space through the second dust suction port and used for collecting dust generated in the process of spraying the crucible.

[0011] In one of the embodiments, the dust removal assembly further comprises a drying assembly and a spraying agent collecting assembly, the drying assembly and the spraying agent collecting assembly are arranged in the second dust collector, the drying assembly is used for drying the spraying agent in the second dust collector to obtain dry spraying agent, and the spraying agent collecting assembly is used for collecting the dry spraying agent.

[0012] In one of the embodiments, the dust removal assembly further comprises a third dust collector, the dust cover is provided with a third dust suction port, the third dust collector is communicated with the inside of the dust cover through the third dust suction port and used for collecting dust inside the dust cover.

[0013] In one of the embodiments, the third dust collector comprises a cloth bag type dust collector, the cloth bag type dust collector is used for forming negative pressure inside the dust cover.

[0014] In one of the embodiments, the dust removal assembly further comprises a dust cover driving mechanism, the dust cover driving mechanism is fixedly connected with the dust cover and used for driving the dust cover to move in the vertical or horizontal direction.

[0015] In one of the embodiments, the system further comprises a crucible conveying assembly, the crucible conveying assembly comprises a guide rail, a crucible carrier for carrying the crucible, and a carrier driving mechanism for driving the crucible carrier to slide along the guide rail, the guide rail connects the crucible cleaning station and the crucible spraying station, and the guide rail is provided with a first positioning member and a second positioning member, the first positioning member is used for fixing the crucible carrier on the crucible cleaning station, and the second positioning member is used for fixing the crucible carrier on the crucible spraying station.

[0016] In a second aspect, a purification system by fractional crystallization is provided, the system comprises the crucible cleaning and spraying device as described in the first aspect or any one of the embodiments of the first aspect, and the crucible cleaning and spraying device is used for cleaning and spraying the crucible in the purification process by fractional crystallization.

[0017] In one of the embodiments, the system is used for producing high-purity aluminum.

[0018] The above-mentioned crucible cleaning and spraying device and the purification system by fractional crystallization can quickly connect the cleaning process and the spraying process by adjacently arranging the cleaning station and the spraying station, reduce the downtime and the waiting time between processes, improve the production efficiency, automatically clean the inner surface and the bottom surface of the crucible by the scraping member of the crucible cleaning assembly, ensure the uniformity of the cleaning degree of the crucible, facilitate the subsequent spraying process, reduce the manual intervention, reduce the labor intensity, cover the cleaning and spraying stations by the dust cover of the dust removal assembly, effectively control the diffusion of the dust and the spraying liquid, reduce the environmental pollution, and also facilitate the protection of the health of the operators, improve the cleanliness of the working environment, and the above-mentioned crucible cleaning and spraying device and the purification system by fractional crystallization can improve the efficiency and consistency of the crucible cleaning and spraying, and reduce the environmental pollution. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Fig. 1 FIG. 1 is a structural schematic diagram of the crucible cleaning and spraying device in one embodiment of the present application;

[0021] Fig. 2 FIG. 2 is a structural schematic diagram of the crucible cleaning assembly in one embodiment of the present application;

[0022] Fig. 3 FIG. 3 is a structural schematic diagram of the crucible spraying assembly in one embodiment of the present application.

[0023] In order to make the above and other purposes, features, advantages and embodiments of the present application more obvious and easy to understand, the following description of the drawings is as follows:

[0024] 1-crucible cleaning assembly, 11-scrapping member, 12-first cover, 13-first lifting and translating mechanism, 14-first dust collector, 15-first dust collector inlet, 16-first collection cavity, 2-crucible spraying assembly, 21-spraying head, 22-second cover, 23-second lifting and translating mechanism, 24-cyclone dust collection device, 25-cyclone dust collection device inlet, 26-second collection cavity, 27-cyclone dust collection device outlet, 28-spraying agent pipeline, 3-dust removal assembly, 31-enclosed room, 32-quick lifting door, 33-dust suction port and air duct, 34-bag-type dust collector, 35-bag-type dust collector inlet, 40-crucible, 41-crucible carrier, 42-fine particle dust, 43-impurity fragments and large particle dust, 44-circulation line sunken trench. DETAILED DESCRIPTION

[0025] In order to make the above and other purposes, features, advantages and embodiments of the present application more obvious and easy to understand, the following description of the drawings is as follows:

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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 invention according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Fig. 1 This is a schematic diagram of the crucible cleaning and spraying device according to one embodiment of the present invention; Fig. 2 This is a schematic diagram of the crucible cleaning assembly in one embodiment of the present invention; Fig. 3 This is a schematic diagram of the crucible spraying assembly according to one embodiment of the present invention. Figs. 1 to 3 As shown, an embodiment of the present invention provides a crucible cleaning and spraying device, comprising:

[0032] The crucible cleaning assembly 1 includes a scraper 11. The crucible cleaning assembly 1 is set at the cleaning station and is used to clean the inner surface and bottom surface of the crucible 40.

[0033] The crucible spraying assembly 2 includes a nozzle 21 and a spraying liquid container. The nozzle 21 is connected to the spraying liquid container. The crucible spraying assembly 2 is set on the spraying station and is used to spray the crucible 40 after it has been cleaned by the crucible cleaning assembly 1. The cleaning station and the spraying station are arranged adjacent to each other.

[0034] The dust removal component 3 includes a dust cover, which is installed above the cleaning station and the spraying station to cover the crucible cleaning component 1 and the crucible spraying component 2.

[0035] The crucible cleaning assembly 1 is used to clean residual impurities on the bottom or sidewalls of the crucible 40, and may include components such as scrapers and brushes. The crucible spraying assembly 2 is used to spray coating liquid onto the cleaned inner wall of the crucible 40, and may include components such as a nozzle 21, a coating liquid container, and connecting pipes. The dust cover of the dust removal assembly 3 is used to cover the crucible cleaning assembly 1 and the crucible spraying assembly 2 to form a closed space. Cleaning and spraying operations are carried out in the closed space, which can reduce pollution to the external environment. In an exemplary embodiment, the dust removal assembly 3 may further include a closed chamber 31, a quick-lifting door 32, a suction port and air duct 33, and a bag filter 34. The closed chamber 31 is installed on the foundation ground, spanning the sunken trench 44 of the circulation line, and enclosing the crucible cleaning assembly 1 and the crucible spraying assembly 2 within the closed chamber 31. The quick-lifting door 32 is installed on the two side walls of the closed chamber 31 along the circulation line direction and on the sunken trench 44 of the circulation line, used to close or open the sunken trench area and the closed chamber 31 area. The suction port and air duct 33 are installed on the top of the closed chamber 31 and connected to the bag filter. When the bag filter is opened, a slight negative pressure is formed in the closed space formed by the closed chamber 31, the quick-lifting door 32, and the sunken trench, thereby achieving dust removal.

[0036] The above-described crucible cleaning and spraying device, by setting the cleaning and spraying stations adjacent to each other, allows for rapid connection between the cleaning and spraying processes, reducing downtime and waiting time between processes, and improving production efficiency. The scraper components of the crucible cleaning assembly automatically clean the inner surface and bottom of the crucible, ensuring uniform cleanliness, which is beneficial for subsequent spraying processes. It also reduces manual intervention and labor intensity. The dust cover of the dust removal component covers the cleaning and spraying stations, effectively controlling the spread of dust and spray liquid, reducing environmental pollution, and protecting the health of operators, thus improving the cleanliness of the working environment. This crucible cleaning and spraying device, combined with the segregation purification system, improves the efficiency and consistency of crucible cleaning and spraying, and reduces environmental pollution.

[0037] In an exemplary embodiment, the crucible cleaning assembly 1 includes a first cover 12 and a first vacuum cleaner 14. The first cover 12 is used to cover the opening of the crucible, forming a first cleaning space between the first cover 12 and the inner wall of the crucible. The first cover 12 is provided with a first suction port, and the first vacuum cleaner 14 communicates with the first cleaning space through the first suction port to collect impurities and dust in the cleaning space. The first suction port can be a through hole in the first cover 12. The first vacuum cleaner 14 can be connected to the first suction port through a pipe. During cleaning, the first vacuum cleaner 14 works to suck up impurities and dust inside the first cleaning space. When there are many impurities in the crucible that tend to accumulate at the bottom, the first suction port can also be provided with a suction pipe extending to the bottom of the crucible to suck up impurity fragments and large dust particles from the bottom of the crucible.

[0038] In an exemplary embodiment, the first cover 12 is mounted on the first lifting and translating mechanism 13, which drives the first cover 12 and the scraper 11 to move horizontally and vertically, thereby pushing the scraper 11 above the crucible fixed cleaning position and enabling the scraper 11 to move smoothly back and forth in the vertical direction to clean the crucible. The first cover 12 is mounted on the lifting and translating mechanism, which drives the first cover 12 to move horizontally, thereby translating the first cover 12 above the crucible fixed cleaning position. Then, the cylinder on the first cover 12 presses down to fasten the first cover 12 onto the edge of the crucible to form a closed cavity. The dust suction port of the first cover 12 is connected to the dust suction port of the dust collection device via a hose, which is used to absorb the dust generated during crucible cleaning and the impurities and debris collected at the bottom of the crucible, thereby sucking out and storing the impurities and dust.

[0039] In an exemplary embodiment, the crucible spraying assembly 2 includes a second cover 22 and a second vacuum cleaner. The second cover 22 is used to cover the opening of the crucible, forming a second cleaning space between the second cover 22 and the inner wall of the crucible. The second cover 22 is provided with a second suction port, and the second vacuum cleaner communicates with the second cleaning space through the second suction port to collect the dust generated during the crucible spraying process. The dust generated during the spraying process is mainly formed by the drying of the atomized spraying agent. The dried spraying agent powder can be reused. During the spraying operation, the second vacuum cleaner works to suck up the spraying agent powder inside the second cleaning space and collect it for reuse.

[0040] In one exemplary embodiment, a drying component and a spray agent collection component are also included. These components are disposed within a second vacuum cleaner. The drying component dries the spray agent in the second vacuum cleaner to obtain dried spray agent, and the spray agent collection component collects the dried spray agent. The drying component may include a fan to further reduce moisture in the spray agent by enhancing air convection over the surface of the spray agent, thus obtaining dried spray agent. The spray agent collection component may include components such as a collection container.

[0041] In an exemplary embodiment, the nozzle 21 is fixedly connected to the second cover 22. The crucible spraying assembly 2 includes a second lifting and translating mechanism 23 and a cyclone dust collection device 24. The second cover 22 and the nozzle 21 are mounted on the lifting and translating mechanism. The second lifting and translating mechanism 23 is used to drive the second cover 22 and the nozzle 21 to move in the horizontal and vertical directions, thereby pushing the nozzle 21 above the crucible fixed cleaning station and enabling the nozzle 21 to move smoothly back and forth in the vertical direction to achieve crucible spraying. At the same time, it drives the second cover 22 to move in the horizontal direction, thereby translating the nozzle 21 to above the crucible fixed spraying station. Then, the cylinder on the nozzle 21 presses down to fasten the second cover 22 onto the edge of the crucible to form a closed cavity. The second cover 22 can be a dust cover structure. The dust cover mechanism's suction port is connected to the cyclone dust collection device 24 via a flexible hose. This device is used to absorb the atomized dust generated during the spraying process, dry it with a cyclone, collect the dried powder for reuse, and extract moisture.

[0042] In one exemplary embodiment, a third vacuum cleaner is also included, with a third suction port provided on the dust cover. The third vacuum cleaner communicates with the interior of the dust cover through the third suction port and is used to collect dust inside the dust cover.

[0043] In one embodiment, the third dust collector includes a bag filter, which is used to create a negative pressure inside the dust cover. The bag filter is connected via pipes to a closed space formed by the dust cover, the crucible cleaning station, and the crucible spraying station. Opening the bag filter creates a slight negative pressure in this closed space, achieving dust removal and reducing pollution to the external environment. A bag filter is a dust collection device that filters particulate matter through filter bags. The filter bags can be made of woven or non-woven fabric. They collect and filter solid particles from dust-laden gas using the surface of the filter bags. The bag filter 34 effectively captures fine particles, has stable and efficient performance, uses various filter bag materials, is easy to replace, and is relatively simple to operate and maintain.

[0044] In an exemplary embodiment, the dust removal assembly 3 further includes a dust cover drive mechanism, which is fixedly connected to the dust cover and used to drive the dust cover to move vertically or horizontally. The dust cover drive mechanism is used to drive the dust cover to move up and down. When the crucible cleaning assembly 1 or the crucible spraying assembly 2 starts operating, the dust cover is placed over the cleaning and spraying stations to prevent dust and debris from polluting the external environment. After the cleaning and spraying operations are completed, the dust cover drive mechanism raises the dust cover so that the crucible conveying assembly can move the cleaned and sprayed crucibles out of the cleaning and spraying stations, facilitating the entry of the next set of crucibles to be cleaned and sprayed into the cleaning and spraying stations. The dust cover drive mechanism may include a dust cover translation drive component and a dust cover vertical drive component. The dust cover vertical drive component may be a cylinder. The dust cover translation drive component is used to drive the dust cover to move horizontally, moving the dust cover mechanism above the crucible cleaning station and the crucible spraying station. Then, the dust cover vertical drive component, such as the cylinder, presses down to fasten the dust cover onto the edge of the crucible to form a closed cavity.

[0045] In one exemplary embodiment, a crucible conveying assembly is also included. This assembly includes a guide rail, a crucible carrier 41, and a carrier driving mechanism. The crucible carrier 41 carries the crucible, and the carrier driving mechanism drives the crucible carrier 41 to slide along the guide rail. The guide rail connects a crucible cleaning station and a crucible coating station. A first positioning element and a second positioning element are provided on the guide rail. The first positioning element fixes the crucible carrier 41 to the crucible cleaning station, and the second positioning element fixes the crucible carrier 41 to the crucible coating station. The guide rail extends from the crucible cleaning station to the crucible coating station and can also connect to an upstream production station to transport crucibles requiring cleaning to the crucible cleaning station. Similarly, the guide rail can connect to a downstream production station to transport cleaned and coated crucibles to the production line for reuse in production. The crucible carrier 41 can be a trolley or similar structure with rollers or pulleys. It can be driven by a power source such as a motor, cylinder, or hydraulic cylinder to move along the guide rail and transport the crucible to the corresponding work station. The crucible carrier 41 can be provided with grooves or fixing parts for placing the crucible to prevent the crucible from falling off the crucible carrier 41. The first positioning part and the second positioning part can include structures such as buffers or limiters. When the crucible carrier 41 reaches the crucible cleaning work station or the crucible spraying work station, the movement of the crucible carrier 41 can be stopped by physical limiting, so that it stops accurately at the required work station. Photoelectric limit switches or proximity switches can also be set at the crucible cleaning work station and the crucible spraying work station to monitor the position of the crucible carrier 41. When it reaches the preset position, it can send a signal to the control system or the carrier driving mechanism to stop the crucible carrier 41 from continuing to move.

[0046] Secondly, a segregation purification system is provided. The system includes a crucible cleaning and spraying device as described in the first aspect or any embodiment thereof. The crucible cleaning and spraying device is used to clean and spray the crucible during the segregation purification process. Segregation refers to a process in which impurities are gradually separated and removed by utilizing the solidification temperature difference between impurity elements and aluminum through multiple melting and cooling processes, thereby obtaining high-purity aluminum. In the process of producing high-purity aluminum by segregation, the aluminum material is usually placed in a crucible and heated above its melting point in a melting furnace to form a uniform molten state. The cooling rate is then controlled to allow impurities to crystallize and separate first, while the aluminum in the crucible solidifies. After solidification, the crucible and aluminum ingot are separated, and the impurities on the aluminum ingot are removed to obtain high-purity aluminum. The segregation purification system may also include components such as a melting furnace, a purification crucible, a cooling system, spraying equipment, and a control system.

[0047] In one exemplary embodiment, the system is used to produce high-purity aluminum. High-purity aluminum refers to aluminum with an aluminum content of 99.99% or higher, exhibiting extremely high purity. It can be purified using methods such as three-layer electrolysis, zone melting, and segregation to ensure its high purity and properties.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A crucible cleaning and spraying device, characterized in that, include: A crucible cleaning assembly, including a scraper, is disposed at a cleaning station and is used to clean the inner surface and bottom surface of the crucible; A crucible spraying assembly includes a nozzle and a spraying liquid container. The nozzle is connected to the spraying liquid container. The crucible spraying assembly is set at a spraying station and is used to spray a crucible that has been cleaned by the crucible cleaning assembly. The cleaning station and the spraying station are arranged adjacent to each other. The dust removal assembly includes a dust cover, which is disposed above the cleaning station and the spraying station to cover the crucible cleaning assembly and the crucible spraying assembly.

2. The crucible cleaning and spraying device according to claim 1, characterized in that, The crucible cleaning assembly includes a first cover and a first vacuum cleaner. The first cover is used to cover the opening of the crucible, so that a first cleaning space is formed between the first cover and the inner wall of the crucible. The first cover is provided with a first suction port, and the first vacuum cleaner is connected to the first cleaning space through the first suction port to collect impurities and dust in the cleaning space.

3. The crucible cleaning and spraying device according to claim 1, characterized in that, The crucible spraying assembly includes a second cover and a second vacuum cleaner. The second cover is used to cover the opening of the crucible, so that a second cleaning space is formed between the second cover and the inner wall of the crucible. The second cover is provided with a second suction port, and the second vacuum cleaner is connected to the second cleaning space through the second suction port to collect the dust generated during the crucible spraying process.

4. The crucible cleaning and spraying device according to claim 3, characterized in that, It also includes a drying component and a spray agent collection component, which are disposed in the second vacuum cleaner. The drying component is used to dry the spray agent in the second vacuum cleaner to obtain dried spray agent, and the spray agent collection component is used to collect the dried spray agent.

5. The crucible cleaning and spraying device according to claim 1, characterized in that, It also includes a third vacuum cleaner, which has a third suction port on the dust cover. The third vacuum cleaner is connected to the inside of the dust cover through the third suction port and is used to collect dust inside the dust cover.

6. The crucible cleaning and spraying device according to claim 5, characterized in that, The third vacuum cleaner includes a bag filter, which is used to create negative pressure inside the dust cover.

7. The crucible cleaning and spraying device according to claim 1, characterized in that, The dust removal assembly also includes a dust cover drive mechanism, which is fixedly connected to the dust cover and is used to drive the dust cover to move in a vertical or horizontal direction.

8. The crucible cleaning and spraying device according to claim 1, characterized in that, It also includes a crucible conveying assembly, which includes a guide rail, a crucible carrier, and a carrier driving mechanism. The crucible carrier is used to carry the crucible, and the carrier driving mechanism is used to drive the crucible carrier to slide along the guide rail. The guide rail connects the crucible cleaning station and the crucible spraying station. The guide rail is provided with a first positioning member and a second positioning member. The first positioning member is used to fix the crucible carrier on the crucible cleaning station, and the second positioning member is used to fix the crucible carrier on the crucible spraying station.

9. A segregation purification system, characterized in that, The system includes a crucible cleaning and spraying device as described in any one of claims 1-8, the crucible cleaning and spraying device being used to clean and spray the crucible during the segregation purification process.

10. The segregation purification system according to claim 9, characterized in that, The system is used to produce high-purity aluminum.

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