Alumina fiber polycrystal film raw material mixing device

Abstract

The utility model discloses an alumina fiber polycrystal membrane raw material mixing device relates to mixing device technical field. This alumina fiber polycrystal membrane raw material mixing device, including the shell, the shell bottom fixedly connected with the discharge gate, the shell top fixedly installed with servo motor, servo motor's output shaft fixedly connected with the driving sprocket, the shell is rotatably connected with the main shaft, the main shaft top fixedly installed with the large sprocket, the shell top fixedly installed with solid holding barrel, solid holding barrel top rotatably connected with the secondary shaft, the secondary shaft top fixedly installed with small sprocket. This alumina fiber polycrystal membrane raw material mixing device, dry powder aluminum source falls into the shell inside after the agglomerate of setting breaking blade in the solid holding barrel is broken, and liquid raw material is followed into, and the helical blade and the stirring vane in the shell continue to rotate, and the dry and wet raw material is fully staggered, sheared, diffused and mixed, and is formed even system.

Description

Technical Field

[0001] This utility model relates to the field of mixing device technology, and in particular to a mixing device for alumina fiber polycrystalline film raw materials. Background Technology

[0002] In the preparation of alumina fiber and polycrystalline film materials, the performance of the raw material mixing device directly affects the uniformity and stability of the precursor slurry, which in turn determines the quality of subsequent spinning, film formation and sintering processes. Traditional alumina fiber polycrystalline film raw material mixing devices have many technical bottlenecks in the raw material mixing process.

[0003] The lack of differentiation treatment between dry aluminum powder and liquid components during raw material feeding caused the dry aluminum powder to easily form local agglomerates or clumps in the liquid, resulting in uneven distribution of slurry components and affecting the subsequent fiber strength and density of polycrystalline film.

[0004] Meanwhile, traditional equipment lacks pre-dispersion treatment of dry aluminum powder source, and the original agglomerates cannot be effectively broken up during the feeding stage. They rely on the subsequent stirring process for dispersion, resulting in prolonged mixing time and low dispersion efficiency. The particle size distribution is wide, which easily leads to cracks or pore defects during film formation.

[0005] In terms of temperature control, traditional mixing devices are not equipped with efficient heat exchange structures, making it difficult to accurately control the mixing temperature according to the characteristics of raw materials and process requirements. The inner wall of the device lacks an effective cleaning mechanism, and materials are prone to adhere to the wall surface and form residues.

[0006] The aforementioned problems make it difficult for traditional mixing devices to meet the requirements of high uniformity, high dispersion, and process stability of raw materials for high-performance alumina fibers and polycrystalline films. Utility Model Content

[0007] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a mixing device for alumina fiber polycrystalline film raw materials, which can solve the above-mentioned problem.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an alumina fiber polycrystalline film raw material mixing device, including a shell, wherein a discharge port is fixedly connected to the bottom of the shell;

[0009] A servo motor is fixedly installed on the top of the outer shell. The output shaft of the servo motor is fixedly connected to a drive sprocket. A main shaft is rotatably connected to the outer shell. A large sprocket is fixedly installed on the top of the main shaft. A solid container is fixedly installed on the top of the outer shell. A secondary shaft is rotatably connected to the solid container. A small sprocket is fixedly installed on the top of the secondary shaft. A chain meshes between the drive sprocket, the large sprocket, and the small sprocket.

[0010] A liquid inlet is fixedly installed on the top of the outer casing, and a valve is fixedly installed on the liquid inlet;

[0011] The solid container is equipped with crushing blades inside, which are arranged in an alternating pattern and fixedly installed on the secondary shaft.

[0012] The outer casing is equipped with spiral blades and stirring blades, both of which are fixedly mounted on the main shaft.

[0013] Preferably, a base is fixedly installed below the outer casing.

[0014] Preferably, a valve is fixedly installed on the discharge port.

[0015] Preferably, a wall scraper is fixedly installed on the edge of the spiral blade.

[0016] Preferably, a spirally distributed copper tube is fixedly installed inside the outer shell interlayer.

[0017] Preferably, the scraper blade is fitted to the inner wall of the outer casing.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] (1) In the alumina fiber polycrystalline film raw material mixing device, the operator adds liquid raw material and dry powder raw material to the liquid inlet and solid container respectively. The dry powder aluminum source is crushed by the crushing blades set in the solid container and falls into the shell. The liquid raw material then enters. The spiral blades and stirring blades in the shell rotate continuously, pushing the material to move along the axial and radial directions, so that the dry and wet raw materials are fully intertwined, sheared, diffused and mixed to form a uniform system.

[0020] (2) The alumina fiber polycrystalline film raw material mixing device has a wall scraper installed on the edge of the spiral blade that rotates synchronously against the inner wall of the shell, continuously scraping off the material adhering to the shell wall, avoiding dead corner accumulation and local agglomeration, ensuring that all materials participate in the mixing process, and finally discharging the uniformly mixed raw material through the bottom outlet. The spiral copper tube arranged in the shell jacket avoids overheating decomposition or low temperature solidification, ensuring the chemical stability of the raw material. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of the alumina fiber polycrystalline film raw material mixing device of this utility model;

[0023] Figure 2 This is a cross-sectional schematic diagram of the alumina fiber polycrystalline film raw material mixing device of this utility model;

[0024] Figure 3 This is a cross-sectional schematic diagram of the alumina fiber polycrystalline film raw material mixing device of this utility model;

[0025] Figure 4 This is a cross-sectional schematic diagram of the alumina fiber polycrystalline film raw material mixing device of this utility model.

[0026] Reference numerals in the attached diagram: 1. Outer shell; 2. Discharge port; 3. Valve; 4. Base; 5. Servo motor; 6. Drive sprocket; 7. Main shaft; 8. Large sprocket; 9. Secondary shaft; 10. Small sprocket; 11. Solid container; 12. Chain; 13. Liquid inlet; 14. Spiral blade; 15. Copper pipe; 16. Agitator blade; 17. Crushing blade; 18. Wall scraper. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Please see Figure 1-4 This utility model provides a technical solution: an alumina fiber polycrystalline film raw material mixing device, including a shell 1, a discharge port 2 fixedly connected to the bottom of the shell 1, a valve 3 fixedly installed on the discharge port 2, and a base 4 fixedly installed below the shell 1;

[0032] A servo motor 5 is fixedly installed on the top of the outer casing 1. The output shaft of the servo motor 5 is fixedly connected to a drive sprocket 6. A main shaft 7 is rotatably connected to the outer casing 1. A large sprocket 8 is fixedly installed on the top of the main shaft 7. A solid container 11 is fixedly installed on the top of the outer casing 1. A secondary shaft 9 is rotatably connected to the solid container 11. A small sprocket 10 is fixedly installed on the top of the secondary shaft 9. A chain 12 meshes with each other between the drive sprocket 6, the large sprocket 8, and the small sprocket 10.

[0033] Start the servo motor 5. The output shaft of the servo motor 5 drives the drive sprocket 6 to rotate. The drive sprocket 6 transmits motion to the large sprocket 8 and the small sprocket 10 through the chain 12. The large sprocket 8 and the small sprocket 10 drive the main shaft 7 and the secondary shaft 9 to rotate, respectively.

[0034] A liquid inlet 13 is fixedly installed on the top of the outer shell 1, and a valve 3 is fixedly installed on the liquid inlet 13. Inside the solid container 11, crushing blades 17 are arranged in an alternating pattern and fixedly installed on the secondary shaft 9. Inside the outer shell 1, spiral blades 14 and stirring blades 16 are both fixedly installed on the main shaft 7. A wall scraper 18 is fixedly installed on the edge of the spiral blades 14.

[0035] The main shaft 7 drives the spiral blade 14 and the stirring blade 16 to rotate for mixing and stirring. The scraper blade 18 fixed to the edge of the spiral blade 14 is in close contact with the inner wall of the outer shell 1 to clean the viscous substances that are not easy to slip off the inner wall of the outer shell 1. The secondary shaft 9 drives the crushing blade 17 to rotate to pre-treat and crush the solid raw materials to avoid clumping. The solid container 11 and the liquid inlet 13 are used for dry and wet separation feeding to avoid the agglomerates from being too large and causing blockage of the device.

[0036] A spirally distributed copper tube 15 is fixedly installed inside the outer shell 1 interlayer. Through the circulation and switching of hot and cold media, the mixing device has both cooling and heating functions.

[0037] Working principle: During use, the operator adds liquid raw materials and dry powder raw materials to the liquid inlet 13 and the solid container 11 respectively. The dry powder aluminum source is crushed and agglomerated by the crushing blade 17 set in the solid container 11 and falls into the shell 1. The liquid raw materials then enter. The spiral blade 14 and stirring blade 16 inside the shell 1 rotate continuously, pushing the material to move axially and radially, so that the dry and wet raw materials are fully intertwined, sheared, diffused and mixed to form a uniform system. At the same time, the wall scraper 18 installed on the edge of the spiral blade 14 rotates synchronously close to the inner wall of the shell 1, continuously scraping off the material adhering to the wall of the shell 1, avoiding dead corner accumulation and local agglomeration, ensuring that all materials participate in the mixing process, and finally the uniformly mixed raw materials are discharged through the bottom outlet 2. The spiral copper tube 15 arranged in the jacket of the shell 1 prevents overheating decomposition or low temperature solidification, ensuring the chemical stability of the raw materials.

[0038] Using dry and wet separation feeding can avoid premature contact and agglomeration of liquid and dry powder, ensuring that the raw materials enter the mixing process in a pure state, improving the initial dispersion efficiency and preventing the risk of agglomeration.

[0039] The solid container 11 integrates a crushing blade 17, which can crush aluminum source agglomerates in real time, so that they fall into the mixing chamber in a uniform fine powder state, avoiding uneven mixing and subsequent film formation defects caused by large particles.

[0040] The shell 1 uses a spiral blade 14 and a stirring blade 16 for coordinated stirring. The spiral blade 14 structure drives the material to axially circulate and transport, while the stirring blade 16 enhances radial shearing and diffusion, forming a three-dimensional mixing flow field, which significantly improves the frequency and uniformity of the cross contact between dry and wet materials, and is especially suitable for the complex dispersion requirements of different components in polycrystalline film raw materials.

[0041] The wall scraper 18 rotates synchronously against the inner wall of the outer shell 1, continuously scraping away the material adhering to the wall surface. This eliminates dead corners at the edges that are prone to occur in traditional mixing, and prevents local material from stagnating, overheating, or solidifying. It ensures that all materials participate in effective mixing, avoids residual materials affecting batch-to-batch consistency, reduces the difficulty of equipment cleaning, maintains the stability of the mixing environment, and ultimately provides a precursor raw material with uniform composition and excellent dispersibility for alumina fiber polycrystalline film, laying a solid foundation for the quality of subsequent film formation processes.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An alumina fiber polycrystalline film raw material mixing device, comprising a shell (1), characterized in that: The bottom of the outer shell (1) is fixedly connected to a discharge port (2); A servo motor (5) is fixedly installed on the top of the outer shell (1). The output shaft of the servo motor (5) is fixedly connected to a drive sprocket (6). A main shaft (7) is rotatably connected to the outer shell (1). A large sprocket (8) is fixedly installed on the top of the main shaft (7). A solid container (11) is fixedly installed on the top of the outer shell (1). A secondary shaft (9) is rotatably connected to the solid container (11). A small sprocket (10) is fixedly installed on the top of the secondary shaft (9). A chain (12) meshes between the drive sprocket (6), the large sprocket (8), and the small sprocket (10). A liquid inlet (13) is fixedly installed on the top of the outer shell (1), and a valve (3) is fixedly installed on the liquid inlet (13). The solid container (11) is equipped with crushing blades (17), which are arranged in an alternating pattern and fixedly installed on the secondary shaft (9); The outer shell (1) is provided with a spiral blade (14) and a stirring blade (16), both of which are fixedly mounted on the main shaft (7).

2. The alumina fiber polycrystalline film raw material mixing device according to claim 1, characterized in that: A base (4) is fixedly installed below the outer shell (1).

3. The alumina fiber polycrystalline film raw material mixing device according to claim 2, characterized in that: A valve (3) is fixedly installed on the discharge port (2).

4. The alumina fiber polycrystalline film raw material mixing device according to claim 3, characterized in that: A wall scraper (18) is fixedly installed on the edge of the spiral blade (14).

5. The alumina fiber polycrystalline film raw material mixing device according to claim 4, characterized in that: The outer shell (1) has a spirally distributed copper tube (15) fixedly installed inside the interlayer.

6. The alumina fiber polycrystalline film raw material mixing device according to claim 5, characterized in that: The scraper (18) is attached to the inner wall of the outer shell (1).

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