Raw material powder homogenizing device for electronic-grade glass fiber

Abstract

The application belongs to the technical field of glass fiber raw material homogenization, and discloses a raw material powder homogenization device for electronic-grade glass fiber, which comprises a tank body, a driving mechanism and a stirring shaft, the stirring shaft is located in the tank body, the top of the tank body is provided with a feeding port, the bottom of the tank body is provided with a discharging port, at least two impeller assemblies and stirring blades are sequentially arranged along the length direction of the stirring shaft from top to bottom, the inner wall of the tank body is further provided with an annular guide plate which is arranged in an inclined manner, the number of the annular guide plates matches the number of the impeller assemblies, the annular guide plates are located below the impeller assemblies, and the stirring blades are located above the discharging port. The homogenization device is provided with the impeller assemblies and the annular guide plates, the impeller assemblies can fully disperse the falling raw materials, the dispersed raw materials are gathered and then fall through the annular guide plates and are dispersed again through the impeller assemblies, the operation of dispersion and gathering is repeated, so that each component in the raw materials enters the working area of the stirring blades in a dispersed state, and finally the raw materials are fully stirred by the stirring blades, thereby ensuring the uniform distribution of each component in the raw materials.

Description

Technical Field

[0001] This application belongs to the field of glass fiber raw material homogenization technology, specifically a raw material powder homogenization device for electronic-grade glass fiber. Background Technology

[0002] Electronic-grade glass fiber is a special type of glass fiber that has undergone high-purity treatment and possesses excellent insulation properties and thermal stability. It is mainly used in the electronics industry, semiconductor manufacturing, optoelectronic devices, and high-end electronic packaging. With the continuous development of microelectronics technology, the requirements for the purity and performance of electronic materials are constantly increasing. Due to its excellent electrical insulation properties, heat resistance, and low impurity content, electronic-grade glass fiber has become one of the key basic materials.

[0003] Traditional glass fiber manufacturing processes can introduce various impurities that can affect the performance of electronic devices. Therefore, electronic-grade glass fiber undergoes rigorous purity control in all stages of the manufacturing process, including raw material selection, melt spinning, and stretching and shaping, to ensure its low-impurity and high-purity characteristics. The manufacturing process is typically carried out in a clean environment, employing specialized techniques to remove impurities and ensure the product meets extremely high purity standards.

[0004] In the production of electronic-grade glass fiber, raw material homogenization is one of the key steps to ensure product quality. The formulation of electronic-grade glass fiber requires precise control of the oxide ratios, such as silicon dioxide, alumina, and boron oxide, to meet requirements for dielectric properties and corrosion resistance. Homogenization avoids localized compositional deviations and ensures the chemical homogeneity of the molten glass.

[0005] Therefore, the technical problem to be solved by this application is: how to ensure the uniform distribution of each component in the raw material. Utility Model Content

[0006] The purpose of this application is to solve the above-mentioned problems and provide a homogenization device for raw material powder for electronic-grade glass fiber. This homogenization device is equipped with a pulsator assembly and an annular guide plate. The pulsator assembly can fully disperse the falling raw material. The dispersed raw material is gathered and falls by the annular guide plate, and is dispersed again by the pulsator assembly. The operation of dispersing and gathering is repeated so that the components in the raw material enter the working area of ​​the stirring blade in a dispersed state. Finally, the stirring blade is fully stirred to ensure the uniform distribution of the components in the raw material.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] A homogenizing device for raw material powder for electronic-grade glass fiber includes a tank, a drive mechanism disposed on the top of the tank, and a stirring shaft connected to the drive mechanism. The stirring shaft is located inside the tank. The top of the tank has a feed inlet and the bottom has a discharge outlet. Along the length of the stirring shaft, at least two impeller assemblies and stirring blades are arranged sequentially from top to bottom. The inner wall of the tank is also provided with inclined annular guide plates. The number of annular guide plates matches the number of impeller assemblies. The annular guide plates are located below the impeller assemblies, and the stirring blades are located above the discharge outlet.

[0009] Preferably, the center of the annular guide plate is the material discharge port, which is located directly below the impeller assembly, and the diameter of the material discharge port is less than or equal to the outer diameter of the impeller assembly.

[0010] Preferably, the stirring shaft is also provided with a dispersing component, the number of which matches the number of impeller components. The dispersing component is located below the impeller components and matches the position of the annular guide plate. In the projection of the vertical plane, the dispersing component coincides with the material discharge port.

[0011] Preferably, the dispersing component includes multiple dispersing rods arranged in a circumferential array on the stirring shaft. The dispersing rods are inclined, with one end of the dispersing rod inclined upward connected to the stirring shaft. In the projection of the vertical plane, the dispersing rods coincide with the material discharge port.

[0012] Preferably, the impeller assembly is an impeller agitator. In the vertical cross-section of the impeller agitator, the side wall of the impeller agitator is V-shaped, and the side wall of the impeller agitator is provided with multiple arc-shaped protrusions that match its rotation direction.

[0013] Preferably, it also includes an auger conveyor mechanism, with multiple feed inlets, the number of auger conveyors matching the number of feed inlets, and the discharge end of the auger conveyor mechanism connected to the feed inlet.

[0014] Preferably, the tank also includes a support frame, a connecting plate is provided on the side wall of the tank, the tank is connected to the support frame through the connecting plate, a bracket is provided on the support frame, and the auger conveying mechanism is connected to the top of the bracket.

[0015] Preferably, a star-shaped unloader is also provided at the discharge port of the tank.

[0016] Preferably, there are two impeller assemblies and two annular guide plates.

[0017] Preferably, the driving mechanism is a drive motor.

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

[0019] This homogenization device is equipped with a pulsator assembly and an annular guide plate. The pulsator assembly can fully disperse the falling raw material. The dispersed raw material is gathered and falls by the annular guide plate, and is dispersed again by the pulsator assembly. The operation of dispersing and gathering is repeated so that the components in the raw material enter the working area of ​​the stirring blade in a dispersed state. Finally, the stirring blade is fully stirred to ensure the uniform distribution of the components in the raw material. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the raw material powder homogenization device for electronic-grade glass fiber in Example 1;

[0021] Figure 2 This is a top view of the impeller assembly of the raw material powder homogenization device for electronic-grade glass fiber in Example 1;

[0022] The labels for each item are as follows:

[0023] Tank body 1; drive mechanism 2; stirring shaft 3; auger conveyor mechanism 4; support frame 5; feed inlet 11; discharge outlet 12; annular guide plate 13; connecting plate 14; impeller assembly 31; stirring blade 32; dispersing assembly 33; bracket 51; star-shaped unloader 121; discharge port 131; impeller agitator 311; arc-shaped protrusion 312; dispersing rod 331. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] Example 1

[0026] refer to Figure 1 and Figure 2 A homogenization device for raw material powder for electronic-grade glass fiber includes a tank 1, a drive mechanism 2 disposed on the top of the tank 1, and a stirring shaft 3 connected to the drive mechanism 2. The stirring shaft 3 is located inside the tank 1. The top of the tank 1 is provided with a feed inlet 11 and the bottom is provided with a discharge outlet 12. Along the length direction of the stirring shaft 3, at least two impeller assemblies 31 and stirring blades 32 are arranged sequentially from top to bottom. The inner wall of the tank 1 is also provided with an inclined annular guide plate 13. The number of annular guide plates 13 matches the number of impeller assemblies 31. The annular guide plates 13 are located below the impeller assemblies 31, and the stirring blades 32 are located above the discharge outlet 12.

[0027] This application is mainly used for homogenizing raw material powder for electronic-grade glass fiber. In this embodiment, there are multiple feed inlets 11, and the number of auger conveyors 4 matches the number of feed inlets 11. The discharge end of the auger conveyor 4 is connected to the feed inlet 11. It should be noted that the raw material input can be pre-proportioned. The pre-proportioned raw material is fed into this device through multiple auger conveyors 4 for homogenization.

[0028] In actual use, the raw material falls and comes into contact with the high-speed rotating impeller assembly 31. Centrifugal force and shear force cause the raw material to be thrown off the surface of the impeller assembly 31, forming a scattered mass. The scattered raw material falls onto the annular guide plate 13 due to its own weight, and after being gathered by the annular guide plate 13, it falls again onto the surface of the next impeller assembly 31, where it is dispersed again. After being dispersed and gathered multiple times, the raw material enters the working range of the stirring blade 32, where it is finally stirred and homogenized. In this way, the uniform distribution of each component in the raw material is ensured.

[0029] Regarding the raw material metering in tank 1, the operator needs to make a ratio according to the capacity of tank 1 before adding raw materials to ensure the dispersing effect of impeller assembly 31 and the converging effect of annular guide plate 13. The working mode of this device is batch homogenization, that is, after a certain amount of raw material is homogenized, the corresponding batch of raw materials is output, and then a new ratio of raw materials is added for homogenization.

[0030] Regarding the operation of the stirring shaft 3 inside the tank 1, the stirring shaft 3 is driven by the driving mechanism 2 located at the top of the tank 1. Specifically, in this embodiment, the driving mechanism 2 is a driving motor. The stirring shaft 3 is connected to the output end of the driving motor and is driven to rotate by the driving motor, thereby driving the impeller assembly 31 and the stirring blade 32 located on the stirring shaft 3 to rotate.

[0031] Regarding the auger conveyor mechanism 4, it is existing technology in this field, therefore the structure and operation of the auger conveyor mechanism 4 will not be described in detail in this embodiment.

[0032] In this embodiment, the middle part of the annular guide plate 13 is the material drop port 131, which is located directly below the impeller assembly 31. The diameter of the material drop port 131 is less than or equal to the outer diameter of the impeller assembly 31.

[0033] In actual use, the diameter of the discharge port 131 is less than or equal to the outer diameter of the impeller assembly 31, which ensures that the raw materials scattered by the impeller assembly 31 are gathered by the annular guide plate 13. Of course, it is possible that some raw materials, after being dispersed by the impeller assembly 31, will bounce off the inner wall of the tank 1 and pass directly through the discharge port 131 without going through the annular guide plate 13. However, most of the raw materials will still be gathered by the annular guide plate 13 and fall down. Through the gathering by the annular guide plate 13, the raw materials can come into contact with the impeller assembly 31 below to achieve the purpose of being dispersed again.

[0034] In this embodiment, the stirring shaft 3 is also provided with a dispersing component 33. The number of dispersing components 33 matches the number of impeller components 31. The dispersing components 33 are located below the impeller components 31 and match the position of the annular guide plate 13. In the projection of the vertical plane, the dispersing components 33 partially overlap with the discharge port 131.

[0035] Specifically, by setting a dispersing component 33 on the stirring shaft 3, and in the vertical projection, the dispersing component 33 partially overlaps with the discharge port 131. That is to say, when the stirring shaft 3 rotates, the dispersing component 33 rotates at the discharge port 131 to prevent the raw material from accumulating and to ensure that the raw material falls smoothly from the discharge port 131. However, under normal circumstances, the raw material that falls after being gathered by the annular guide plate 13 generally will not come into contact with the dispersing component 33. The dispersing component 33 only has the function of preventing the accumulation of raw material under special circumstances. Therefore, in this embodiment, the dispersing component 33 has a preventive function, and not all the raw material gathered by the annular guide plate 13 will be dispersed by the dispersing component 33 before falling.

[0036] Furthermore, the dispersing component 33 includes a plurality of dispersing rods 331, which are arranged in a circular array on the stirring shaft 3. The dispersing rods 331 are inclined, and the upward end of the dispersing rods 331 is connected to the stirring shaft 3. In the projection of the vertical plane, the dispersing rods 331 partially overlap with the discharge port 131.

[0037] Specifically, the number of dispersing rods 331 in a single dispersing component 33 is two or three. The inclined arrangement allows the rotation of the dispersing rods 331 to cover the area of ​​the annular guide plate 13 and the area outside the annular guide plate 13, which can better prevent the accumulation of raw materials.

[0038] In this embodiment, the impeller assembly 31 is an impeller agitator 311. In the vertical cross-section of the impeller agitator 311, the side wall of the impeller agitator 311 is V-shaped, and the side wall of the impeller agitator 311 is provided with a plurality of arc-shaped protrusions 312 that match its rotation direction.

[0039] For the specific structure of the impeller stirrer 311, please refer to the technical solution disclosed in Chinese Patent CN204017739U. The impeller stirrer 311 in this application corresponds to the hyperboloid impeller of the same solution. You can also refer to the technical solution disclosed in Chinese Patent CN220633922U. The impeller stirrer 311 in this application corresponds to the impeller of the same solution.

[0040] In this embodiment, there are two impeller assemblies 31 and two annular guide plates 13. The number of impeller assemblies 31 and annular guide plates 13 can be set according to actual conditions.

[0041] Regarding the installation method of the impeller agitator 311, it can be installed by welding, i.e., the impeller agitator 311 is directly welded to the agitator shaft 3. Alternatively, it can be installed by means of mounting holes on the top of the impeller agitator 311 that match the flange. The agitator shaft 3 has a split structure, including a first rod, a second rod, and a third rod. The upper end of the first rod is connected to the power output end of the drive motor, and the lower end of the first rod has a flange. Flanges are located at both the upper and lower ends of the second rod, and the upper end of the third rod has a flange. The agitator blade 32 is located near the lower end of the third rod. The flange on the first rod, the mounting holes on the impeller agitator 311, and the flange at the upper end of the second rod are sequentially connected by bolts. Similarly, the flange at the lower end of the second rod, the mounting holes on the impeller agitator 311, and the flange at the upper end of the third rod are sequentially connected by bolts. This embodiment uses the first method, namely welding.

[0042] Furthermore, it also includes a support frame 5, and a connecting plate 14 is provided on the side wall of the tank body 1. The tank body 1 is connected to the support frame 5 through the connecting plate 14. A bracket 51 is provided on the support frame 5, and the auger conveying mechanism 4 is connected to the top of the bracket 51. Specifically, the support frame 5 and the bracket 51 can make the overall integrity of the tank body 1 and the auger conveying mechanism 4 stronger and the stability better.

[0043] In this embodiment, a rotary valve 121 is also provided at the discharge port 12 of the tank 1. The main function of the rotary valve 121 is to achieve uniform, continuous and controllable discharge of solid materials and reduce the risk of blockage.

[0044] In practical use, the bottom of the star-shaped unloader 121 can also be connected to an auger conveyor to transport materials to a designated location.

[0045] Implicitly, in this embodiment, the tank body 1 is also provided with a pressure relief valve (not shown in the figure), a feed valve (not shown in the figure) is provided at the feed inlet 11 of the tank body 1, and a discharge valve (not shown in the figure) is provided at the discharge outlet 12 of the tank body 1.

[0046] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A raw material powder homogenizing device for electronic grade glass fiber, comprising a tank body, a driving mechanism arranged at the top of the tank body, a stirring shaft connected with the driving mechanism, the stirring shaft being located in the tank body, a feeding port being arranged at the top of the tank body, and a discharging port being arranged at the bottom of the tank body, characterized in that, Along the length of the stirring shaft, at least two impeller assemblies and stirring blades are arranged sequentially from top to bottom. The inner wall of the tank is also provided with an inclined annular guide plate. The number of annular guide plates matches the number of impeller assemblies. The annular guide plates are located below the impeller assemblies, and the stirring blades are located above the discharge port.

2. The raw material powder homogenization device for electronic-grade glass fiber according to claim 1, characterized in that, The center of the annular guide plate is the material discharge port, which is located directly below the impeller assembly. The diameter of the material discharge port is less than or equal to the outer diameter of the impeller assembly.

3. The raw material powder homogenization device for electronic-grade glass fiber according to claim 2, characterized in that, The stirring shaft is also provided with a dispersing component. The number of the dispersing components matches the number of the impeller components. The dispersing components are located below the impeller components and match the position of the annular guide plate. In the projection of the vertical plane, the dispersing components partially overlap with the discharge port.

4. The raw material powder homogenization device for electronic-grade glass fiber according to claim 3, characterized in that, The dispersing component includes multiple dispersing rods arranged in a circular array on the stirring shaft. The dispersing rods are inclined, with one end of the dispersing rod inclined upward connected to the stirring shaft. In the projection of the vertical plane, the dispersing rods partially coincide with the material discharge port.

5. The raw material powder homogenization device for electronic-grade glass fiber according to claim 1, characterized in that, The impeller assembly is an impeller agitator. In the vertical cross-section of the impeller agitator, the side wall of the impeller agitator is V-shaped, and the side wall of the impeller agitator is provided with a plurality of arc-shaped protrusions that match its rotation direction.

6. The raw material powder homogenization device for electronic-grade glass fiber according to claim 1, characterized in that, It also includes a screw conveyor mechanism, with multiple feed inlets, the number of screw conveyors matching the number of feed inlets, and the discharge end of the screw conveyor mechanism connected to the feed inlet.

7. The raw material powder homogenization device for electronic-grade glass fiber according to claim 6, characterized in that, It also includes a support frame, the side wall of the tank is provided with a connecting plate, the tank is connected to the support frame through the connecting plate, the support frame is provided with a bracket, and the auger conveying mechanism is connected to the top of the bracket.

8. The raw material powder homogenization device for electronic-grade glass fiber according to claim 1, characterized in that, The tank is also equipped with a star-shaped unloader at the discharge port.

9. The raw material powder homogenization device for electronic-grade glass fiber according to claim 1, characterized in that, The number of the impeller assembly and the annular guide plate are both two.

10. The raw material powder homogenization device for electronic-grade glass fiber according to claim 1, characterized in that, The driving mechanism is a drive motor.

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