Multistage preparation device for crucible cleaning agent

Abstract

This application discloses a multi-stage preparation device for crucible cleaning agents, belonging to the field of cleaning agent preparation technology. It includes a reaction vessel, with a servo motor mounted at the top center. The servo motor shaft is connected to a corresponding stirring rod inside the reaction vessel. The stirring rod is a vertical rod, with an impeller mounted in the middle layer inside the reaction vessel, and stirring blades adapted to the inner walls on both sides of the bottom layer inside the reaction vessel. The top of the reaction vessel also has a first feeding port and a second feeding port. A powder feeding pipe is fixed to the upper end of the second feeding port, with a sealing cap hinged to the top of the powder feeding pipe, and a movable plate hinged to the lower end of the powder feeding pipe. This device not only solves the problem of uneven mixing in traditional stirring methods but also mitigates the environmental pollution and safety risks caused by solid powder flying during the powder feeding process to a certain extent, resulting in good overall performance.

Description

Technical Field

[0001] This application relates to the field of cleaning agent preparation technology, and more specifically, to a multi-stage preparation apparatus for crucible cleaning agents. Background Technology

[0002] In the photovoltaic and semiconductor industries, quartz crucibles are key consumables in the crystal growth process. After use, their inner walls will be covered with hard glassy oxide residues, which need to be cleaned with a special crucible cleaning agent.

[0003] However, such cleaning agents are usually composed of solid powdered acid agents, oxidants and a variety of additives. As a result, when the solid powder is added to the reaction vessel during the preparation process, the airflow affected by the rotation of the stirring mechanism inside the reaction vessel can easily cause dust to fly around. This not only causes material loss and environmental pollution, but also the dust is usually highly corrosive and can easily pose a threat to the safety of equipment and operators.

[0004] Therefore, this application proposes a multi-stage preparation apparatus for crucible cleaning agents to solve the above-mentioned technical problems. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] The purpose of this application is to address the shortcomings of the prior art by providing a multi-stage preparation device for crucible cleaning agents, thereby solving the problems of corrosive dust hazards during solid powder feeding and uneven mixing in the reaction vessel leading to sedimentation dead zones.

[0007] To achieve the above objectives, this application provides the following technical solution: A multi-stage preparation device for crucible cleaning agent includes a reaction vessel. A servo motor is installed at the top center of the reaction vessel. The shaft of the servo motor is connected to a stirring rod correspondingly installed inside the reaction vessel. The stirring rod is a vertical rod, and an impeller located in the middle layer inside the reaction vessel is installed in the middle of the stirring rod. Stirring blades adapted to the inner walls on both sides are installed at the bottom of the stirring rod. The reactor is also provided with a first feeding port and a second feeding port at the top. A powder feeding pipe is fixed to the upper end of the second feeding port. A sealing cover is hinged to the top end of the powder feeding pipe. A movable plate is hinged to the lower end of the powder feeding pipe. The lower end of the sealing cover is connected to one end of the movable plate through a connecting cable and a pulley system to form a linkage. When the sealing cover is upright, the movable plate is horizontal, and when the sealing cover is horizontal, the movable plate is upright.

[0008] Furthermore, a speed reducer is installed at the top of the reactor, and the servo motor is fixed to the top of the stirring rod via the speed reducer.

[0009] Furthermore, a first flange for connecting the reducer is fixed to the top of the stirring rod.

[0010] Furthermore, the stirring blade is a U-shaped structure adapted to the bottom and sidewalls of the reactor.

[0011] Furthermore, rubber strips are fixed to both sides of the stirring blade.

[0012] Furthermore, a second flange connected to the upper port of the second feeding port is fixed to the lower end of the powder feeding pipe, and a handle is fixed to the middle of the upper end face of the sealing cover.

[0013] Furthermore, the pulley assembly includes a fixed pulley, a movable pulley, and a guide pulley. The fixed pulley and the guide pulley are respectively fixed to the upper and lower ends of one side of the powder inlet pipe, and the movable pulley is vertically slidably installed in the middle of that side of the powder inlet pipe.

[0014] Furthermore, one end of the connecting cable is fixed to the lower end face of the sealing cover, and the other end passes sequentially around the movable pulley, the fixed pulley, and the guide pulley, and is fixed to the end of the movable plate away from its hinge point.

[0015] The beneficial effects of this application are as follows: In the above scheme, by combining the impeller set in the middle of the reactor with the U-shaped stirring blades adapted to the inner wall at the bottom, the material can be circulated and sheared in a multi-level space, thus eliminating mixing dead angles, preventing sedimentation at the bottom of the reactor, and significantly improving the mixing uniformity of the product. In the above scheme, the mechanical linkage of the sealing cover, connecting cable, pulley block and movable plate can realize the automatic sealing and opening of the discharge port during feeding, achieving a safe and sealed feeding effect that effectively isolates the gas inside the reactor and prevents corrosive dust from escaping.

[0016] In summary, this device not only solves the problem of uneven mixing in traditional stirring, but also mitigates the environmental pollution and safety risks caused by solid powder flying during the powder feeding process to a certain extent, resulting in good overall performance. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0018] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0019] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a schematic diagram of the structure of the stirring rod in this application; Figure 3 This is a schematic diagram of the internal structure of the powder addition tube in this application; Figure 4 This is a schematic diagram of the internal structure of the powder addition tube in another state according to this application.

[0020] Figure label:

[0021] 1. Reactor; 2. Servo motor; 3. Reducer; 4. Stirring rod; 401. First flange; 5. Impeller; 6. Stirring blade; 601. Rubber strip; 7. First feed port; 8. Second feed port; 9. Powder inlet pipe; 901. Second flange; 10. Sealing cover; 1001. Handle; 11. Connecting cable; 12. Movable plate; 13. Fixed pulley; 14. Moving pulley; 15. Guide pulley. Detailed Implementation

[0022] The multi-stage preparation apparatus for crucible cleaning agent provided in this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.

[0023] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0024] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0025] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Reference Figure 1-4 As shown, this utility model provides a multi-stage preparation device for crucible cleaning agents, including a reaction vessel 1. The reaction vessel 1 can be made of corrosion-resistant steel to ensure long-term stability. A servo motor 2 is fixedly installed at the top center of the reaction vessel 1. The servo motor 2 is preferably an adjustable speed model to adjust the stirring intensity according to different process stages. The output shaft of the servo motor 2 is rigidly connected to the input end of a reducer 3 via a coupling. The reducer 3 is fixed to a mounting base on the top of the reaction vessel 1 by bolts. The output end of the reducer 3 is connected to the top end of a stirring rod 4 extending vertically into the interior of the reaction vessel 1 via a first flange 401. The first flange 401 and the top end of the stirring rod 4 are integrally formed.

[0027] An impeller 5 is fixedly mounted in the middle of the stirring rod 4 via a key connection. Its position corresponds to the middle layer of material within the reactor 1, and its main function is to generate a strong radial flow to promote macroscopic mixing and dispersion of the material. At the bottom end of the stirring rod 4, a U-shaped stirring blade 6 is symmetrically mounted. The arcuate profile of the stirring blade 6 ensures that it maintains a constant and minute gap, typically 3-5 mm, between itself and the hemispherical bottom and adjacent sidewalls of the reactor 1 during rotation. To further enhance the wall-scraping effect and reduce metal-to-metal contact, flexible rubber strips 601 made of polytetrafluoroethylene are embedded on both sides of the stirring blade 6. These rubber strips 601 adhere tightly to and clean the reactor wall under pressure.

[0028] To meet the feeding requirements of different materials, a first feeding port 7 and a second feeding port 8 are provided on the top end cap of the reactor 1. The first feeding port 7 is usually used for injecting liquid raw materials and can be connected to an external pipeline pump. The second feeding port 8 is specifically used for feeding solid powder. Its upper end is connected to a vertical powder inlet pipe 9 via a second flange 901. The height of this pipe section can be 800-1000 mm to form sufficient buffer space. A sealing cover 10 is hinged to the top of the powder inlet pipe 9. An insulated handle 1001 is fixed to the center of the upper surface of the sealing cover 10 for safe operation. At the lower outlet inside the powder inlet pipe 9, a movable plate 12 is hinged to a pivot. In its natural state, the movable plate 12 can be kept vertical by gravity and fits against the bottom inner wall of the powder inlet pipe 9 to ensure smooth powder feeding.

[0029] To achieve linkage between the sealing cover 10 and the movable plate 12, a connecting cable 11 is fixed at the center of the inner side of the sealing cover 10. This connecting cable 11 extends downwards, successively passing through a pulley system consisting of a fixed pulley 13, a movable pulley 14, and a guide pulley 15. Specifically, the guide pulley 15 is installed on the lower side wall of the powder inlet pipe 9, the fixed pulley 13 is fixed to the upper side wall, and the movable pulley 14 is adjustablely installed in the middle of the pipe wall via a vertical groove (specifically, the vertical groove of the movable pulley 14 adopts a sealed design, its channel is completely isolated from the external powder environment, and the inner wall of the groove is smooth without dead corners, so that the movable pulley 14 will not be disturbed by powder intrusion when moving up and down, effectively avoiding jamming problems), to tension the connecting cable 11. The end of the connecting cable 11 is finally fixed to the free end of the movable plate 12 away from its hinge axis. When the sealing cap 10 is opened vertically, the connecting cable 11 is tightened, and the pulling force is transmitted through the pulley system to rotate the movable plate 12 to a horizontal state. At this time, it is convenient to first accumulate the solid powder on top of the movable plate 12 inside the powder inlet pipe 9, so as to avoid the problem of flying due to the airflow of the rotating stirring mechanism inside the reactor 1. Then, the sealing cap 10 can be quickly closed to make it horizontally closed, and the connecting cable 11 will lower the movable plate 12 to fully open the lower port of the powder inlet pipe 9, completing the feeding of solid powder.

[0030] In summary, during actual operation, when the operator opens the sealing cover 10 using handle 1001, the connecting cable 11 is immediately tightened. Through the transmission system composed of fixed pulley 13, movable pulley 14, and guide pulley 15, the movable plate 12 is rotated to a horizontal position. At this time, the pre-weighed solid powder can be safely added and temporarily stored above the movable plate 12 inside the powder adding pipe 9. This design effectively isolates the airflow disturbance caused by the rotation of the stirring mechanism inside the reactor 1, fundamentally avoiding the problem of dust rising during the feeding process.

[0031] After the material is fed in, the operator only needs to quickly close the sealing cover 10, and the connecting cable 11 will loosen. The movable plate 12 will naturally hang down to a vertical state under its own gravity, thereby fully opening the lower port of the powder feeding pipe 9, so that the temporarily stored solid powder can fall steadily into the reactor 1 under controlled conditions, completing a safe and dust-free closed feeding operation.

[0032] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0033] It should be noted that this application covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of this application. To provide the public with a thorough understanding of this application, specific details are described in detail in the preferred embodiments, while those skilled in the art can fully understand this application without these details. Furthermore, to avoid unnecessary confusion regarding the substance of this application, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0034] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A multi-stage preparation apparatus for crucible cleaning agent, comprising a reaction vessel (1), characterized in that: A servo motor (2) is provided at the top center of the reactor (1). The shaft of the servo motor (2) is connected to the stirring rod (4) correspondingly provided inside the reactor (1). The stirring rod (4) is a vertical rod, and an impeller (5) located in the middle layer inside the reactor (1) is installed in the middle of the stirring rod (4). Stirring blades (6) adapted to the inner walls on both sides are installed at the bottom of the stirring rod (4). The reactor (1) is also provided with a first feeding port (7) and a second feeding port (8) at the top. A powder feeding pipe (9) is fixed at the upper end of the second feeding port (8). A sealing cover (10) is hinged to the top of the powder feeding pipe (9). A movable plate (12) is hinged to the lower end of the powder feeding pipe (9). The lower end of the sealing cover (10) is connected to one end of the movable plate (12) through a connecting cable (11) and a pulley group to form a linkage. When the sealing cover (10) is upright, the movable plate (12) is horizontal. When the sealing cover (10) is horizontal, the movable plate (12) is upright.

2. The multi-stage preparation apparatus for crucible cleaning agent according to claim 1, characterized in that: A speed reducer (3) is installed at the top of the reactor (1), and the servo motor (2) is fixed to the top of the stirring rod (4) through the speed reducer (3).

3. The multi-stage preparation apparatus for crucible cleaning agent according to claim 2, characterized in that: The top end of the stirring rod (4) is fixed with a first flange (401) that connects to the reducer (3).

4. The multi-stage preparation apparatus for crucible cleaning agent according to claim 1, characterized in that: The stirring blade (6) is a U-shaped structure adapted to the bottom and side wall of the reactor (1).

5. The multi-stage preparation apparatus for crucible cleaning agent according to claim 4, characterized in that: Both sides of the stirring blade (6) are fixed with rubber strips (601).

6. The multi-stage preparation apparatus for crucible cleaning agent according to claim 1, characterized in that: The lower end of the powder inlet pipe (9) is fixed with a second flange (901) that connects to the upper port of the second feed port (8), and the upper end face of the sealing cover (10) is fixed with a handle (1001).

7. The multi-stage preparation apparatus for crucible cleaning agent according to claim 1, characterized in that: The pulley assembly includes a fixed pulley (13), a movable pulley (14), and a guide pulley (15). The fixed pulley (13) and the guide pulley (15) are respectively fixed at the upper and lower ends of one side of the powder inlet pipe (9), and the movable pulley (14) is vertically slidably installed in the middle of that side of the powder inlet pipe (9).

8. The multi-stage preparation apparatus for crucible cleaning agent according to claim 7, characterized in that: One end of the connecting cable (11) is fixed to the lower end face of the sealing cover (10), and the other end passes around the movable pulley (14), the fixed pulley (13), and the guide pulley (15) in sequence, and is fixed to the end of the movable plate (12) away from its hinge point.

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