A precipitation reaction apparatus for producing silicon dioxide

Abstract

The application provides a precipitation reaction device for producing silicon dioxide, relates to the technical field of precipitation reaction equipment, and comprises a reaction tank and a lifting assembly. The upper portion of the reaction tank is provided with a lifting plate. The lifting assembly is used for driving the lifting plate to move up and down. The lifting plate is provided with a stirring assembly and a driving assembly. The driving assembly is used for driving the stirring assembly to rotate so as to stir the materials in the reaction tank. The vertical position of the stirring assembly is adjusted by the lifting assembly. The stirring is driven to rotate by the driving assembly. More areas in the reaction tank can be covered. The stirring uniformity is effectively improved. Compared with the prior art, the local material concentration is not too high or the reaction is not sufficient due to the limited stirring range. The particle size distribution difference of the silicon dioxide product is reduced. The product quality is improved.

Description

Technical Field

[0001] This application relates to the field of precipitation reaction equipment technology, and more specifically, to a precipitation reaction apparatus for producing silica. Background Technology

[0002] Silica, as a key industrial raw material, is widely used in many fields such as rubber reinforcement, coating filling, and electronic packaging. In industry, the mainstream method is to produce silica by reacting sodium silicate with acidic substances through precipitation. The core relies on precipitation reaction equipment to complete key steps such as raw material mixing, reaction process control, and precipitation formation.

[0003] In existing precipitation reaction devices, the stirring structure is in a fixed position, and the stirring range is limited to a specific area. This makes it inconvenient to stir different parts of the reaction tank, resulting in poor stirring uniformity and the possibility of local raw material concentration being too high or incomplete reaction, leading to uneven product particle size distribution. Summary of the Invention

[0004] The purpose of this application is to provide a precipitation reaction apparatus for producing silicon dioxide, which can solve the technical problems raised in the background art.

[0005] This application provides a precipitation reaction apparatus for producing silica, including a reaction tank and a lifting assembly. A lifting plate is provided above the reaction tank, and the lifting assembly is used to drive the lifting plate to move up and down. A stirring assembly and a driving assembly are provided on the lifting plate, and the driving assembly is used to drive the stirring assembly to rotate to stir the material in the reaction tank.

[0006] Furthermore, the stirring assembly includes a rotating shaft, a mounting rod, and stirring components. The upper part of the rotating shaft is rotatably connected to the lifting plate, the mounting rod is fixed to the lower part of the rotating shaft, and two stirring components are provided, which are symmetrically arranged on the mounting rod.

[0007] Furthermore, the stirring component includes a circular disc and multiple guide slices. The circular disc has a through hole in the middle and is movably fitted onto the mounting rod through the through hole. Limiting rings are respectively provided on both sides of the circular disc on the mounting rod. The multiple guide slices are evenly fixed on the periphery of the circular disc to form a stirring cage structure.

[0008] Furthermore, a first scraper is fixed at both ends of the mounting rod, and the first scraper abuts against the inner wall of the reaction tank.

[0009] Furthermore, a reinforcing plate is fixedly connected to the upper ends of the two first scrapers, and a second scraper is fixedly connected to the lower ends of the two first scrapers.

[0010] Furthermore, the drive assembly includes a drive motor and a mounting base. The drive motor is fixed to the lifting plate via the mounting base, and the output shaft of the drive motor is connected to the upper end of the rotating shaft.

[0011] Furthermore, the lifting assembly includes two lifting cylinders, and a support base is provided at the bottom of the reaction tank. The two lifting cylinders are symmetrically fixed on the support base, and the telescopic ends of the lifting cylinders are fixedly connected to the bottom of the support base.

[0012] Furthermore, it also includes a drug addition component, which includes a conical disc and an annular baffle. The center of the conical disc is fixed on the rotating shaft, and the conical disc is located inside the annular baffle. An annular dosing port is provided between the edge of the conical disc and the inner wall of the annular baffle. The top of the annular baffle is connected to the bottom of the lifting plate through a connecting plate.

[0013] Furthermore, a discharge pipe is provided on one side of the lower part of the reaction tank, and a discharge valve is provided on the discharge pipe.

[0014] The beneficial effects of this utility model are:

[0015] This invention adjusts the vertical position of the stirring component by using a lifting component, and combines this with the driving component to rotate and stir. This allows for the coverage of more areas within the reaction tank, effectively improving the uniformity of stirring. Compared with existing technologies, it avoids situations where the local raw material concentration is too high or the reaction is insufficient due to limited stirring range. This helps to reduce the particle size distribution differences in silica products and improve product quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 These are schematic diagrams of structures in some embodiments of this application;

[0018] Figure 2 This is a first cross-sectional view of some embodiments of this application;

[0019] Figure 3 This is a second cross-sectional view of some embodiments of this application;

[0020] Figure 4 This is a schematic diagram of the structure of the stirring assembly in some embodiments of this application;

[0021] The reference numerals in the attached figures are as follows:

[0022] 1. Reaction tank; 2. Lifting assembly; 21. Lifting electric cylinder; 3. Lifting plate; 4. Stirring assembly; 41. Rotating shaft; 42. Mounting rod; 421. Limiting ring; 43. Stirring component; 431. Circular disc; 432. Guide slicer; 5. Drive assembly; 51. Drive motor; 52. Mounting base; 6. First scraper; 7. Reinforcing plate; 8. Second scraper; 9. Support base; 10. Reagent addition assembly; 101. Conical disc; 102. Annular baffle; 1021. Connecting plate; 11. Discharge pipe; 12. Discharge valve. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific Implementation

[0029] like Figure 1-3 As shown, this application provides a precipitation reaction apparatus for producing silica, including a reaction tank 1 and a lifting assembly 2. A lifting plate 3 is provided above the reaction tank 1. The lifting assembly 2 is used to drive the lifting plate 3 to move up and down. A stirring assembly 4 and a driving assembly 5 are provided on the lifting plate 3. The driving assembly 5 is used to drive the stirring assembly 4 to rotate to stir the material in the reaction tank 1. In use, sodium silicate solution is put into the reaction tank 1 and an appropriate amount of acidic reactant is added. The lifting assembly 2 drives the lifting plate 3 above the reaction tank 1 to move up and down, thereby driving the stirring assembly 4 to adjust its vertical position synchronously. At the same time, the driving assembly 5 drives the stirring assembly 4 to rotate, so that the stirring assembly 4 rotates continuously at different vertical heights, thereby comprehensively stirring the material in different positions from top to bottom in the reaction tank 1, effectively improving the uniformity of stirring. Compared with the prior art, it can avoid the situation of excessively high local raw material concentration or insufficient reaction caused by limited stirring range, which helps to reduce the particle size distribution difference of silica products and improve product quality.

[0030] like Figure 2-4 As shown, the stirring assembly 4 includes a rotating shaft 41, a mounting rod 42, and stirring elements 43. The upper part of the rotating shaft 41 is rotatably connected to the lifting plate 3, and the mounting rod 42 is fixed to the lower part of the rotating shaft 41. Two stirring elements 43 are provided, and the two stirring elements 43 are symmetrically arranged on the mounting rod 42. Specifically, the upper part of the rotating shaft 41 is rotatably connected to the lifting plate 3 through a bearing. The driving assembly 5 drives the rotating shaft 41 to rotate around its own axis. The rotating shaft 41 synchronously drives the mounting rod 42 to perform a circular motion. The circular motion of the mounting rod 42 further drives the two stirring elements 43 to perform a circular stirring motion with the axis of the rotating shaft 41 as the center and the length of the mounting rod 42 as the radius, thereby stirring the material in the corresponding area of ​​the reaction tank 1.

[0031] like Figure 2-4As shown, the stirring component 43 includes a circular disc 431 and multiple guide slices 432. The circular disc 431 has a through hole in its center, and is movably fitted onto the mounting rod 42 through the through hole. Limiting rings 421 are respectively provided on both sides of the circular disc 431 on the mounting rod 42. Multiple guide slices 432 are evenly fixed to the periphery of the circular disc 431 to form a stirring cage structure. When the mounting rod 42 rotates with the rotating shaft 41, it drives the circular disc 431 to perform synchronous circular motion, and the evenly fixed periphery of the circular disc 431... Multiple fixed guide slices 432 rotate with the circular disc 431 to form a mixing cage. When the mixing cage moves in a circular motion with the mounting rod 42, the reaction force of the material on the guide slices 432 or the lateral force generated by the material flow will drive the circular disc 431 and the entire mixing cage to rotate freely about the mounting rod 42 as the axis. This allows the mixing cage to rotate autonomously relative to the mounting rod 42, enabling it to both revolve around the mounting rod 42 and rotate around itself, thus enhancing the dynamic interaction with the material and improving the mixing uniformity of the material.

[0032] like Figure 2 and Figure 4 As shown, both ends of the mounting rod 42 are fixed with first scrapers 6, which abut against the inner wall of the reaction tank 1. When the mounting rod 42 rotates, the first scrapers 6 rotate synchronously with the mounting rod 42. The first scrapers 6 can slide relative to the surface of the tank wall, thereby continuously scraping off the material adhering to the inner wall of the reaction tank 1 and preventing the material from accumulating on the tank wall.

[0033] like Figure 2 and Figure 4 As shown, the upper ends of the two first scrapers 6 are fixedly connected to a reinforcing plate 7, and the lower ends of the two first scrapers 6 are fixedly connected to a second scraper 8. Specifically, the middle part of the reinforcing plate 7 is fixedly connected to the rotating shaft 41 to enhance the structural connection strength of the two first scrapers 6. When the mounting rod 42 drives the two first scrapers 6 to rotate around the rotating shaft 41, the second scraper 8 will synchronously move in a circular motion with the first scrapers 6. Under the drive of the lifting component 2, when the second scraper 8 comes into contact with the bottom of the reaction tank 1, the second scraper 8 can act on the bottom area of ​​the reaction tank 1 during the movement to scrape the material at the bottom of the reaction tank 1, which can prevent the material at the bottom from accumulating and the reaction from being incomplete.

[0034] like Figure 1-3 As shown, the drive assembly 5 includes a drive motor 51 and a mounting base 52. The drive motor 51 is fixed to the lifting plate 3 via the mounting base 52, and the output shaft of the drive motor 51 is connected to the upper end of the rotating shaft 41. Specifically, the mounting base 52 is fixed to the lifting plate 3, and the drive motor 51 is fixed to the mounting base 52. The drive motor 51 drives the rotating shaft 41 to rotate, thereby realizing the rotation of the entire stirring assembly 4.

[0035] like Figure 1 and Figure 3 As shown, the lifting assembly 2 includes two lifting cylinders 21. The bottom of the reaction tank 1 is provided with a support base 9. The two lifting cylinders 21 are symmetrically fixed on the support base 9. The telescopic ends of the lifting cylinders 21 are fixedly connected to the bottom of the support base 9. Both lifting cylinders 21 are electrically connected to the controller. The controller controls the two lifting cylinders 21 to start and stop simultaneously. The two lifting cylinders 21 drive the lifting plate 3 to move up and down simultaneously. The symmetrical layout of the two lifting cylinders 21 can ensure that the lifting plate 3 is subjected to balanced force and prevent the lifting plate 3 from tilting during up and down movement.

[0036] like Figure 1-4 As shown, the precipitation reaction apparatus of this application further includes a reagent addition component 10, which includes a conical disk 101 and an annular baffle 102. The middle part of the conical disk 101 is fixed on the rotating shaft 41, and the conical disk 101 is located inside the annular baffle 102. An annular dosing port is provided between the edge of the conical disk 101 and the inner wall of the annular baffle 102. The top of the annular baffle 102 is connected to the bottom of the lifting plate 3 through a connecting plate 1021. Specifically, the bottom of the connecting plate 1021 is fixed to the top of the annular baffle 102. The top of the connecting plate 1021 is fixedly connected to the bottom of the lifting plate 3. When the rotating shaft 41 rotates, the conical disk 101 will rotate synchronously with the rotating shaft 41. When adding the agent, the agent is put in from the upper opening of the annular baffle 102. The agent can diffuse to its edge along the centrifugal force generated by the rotation of the conical disk 101, and then fall evenly into the material in the reaction tank 1 through the annular dosing port. This achieves the annular uniform dosing of the agent, avoids the local agent concentration being too high due to single-point dosing, and improves the initial mixing uniformity of the agent and the material.

[0037] like Figure 1 and Figure 2 As shown, a discharge pipe 11 is provided on one side of the lower part of the reaction tank 1, and a discharge valve 12 is provided on the discharge pipe 11; the discharge of materials in the reaction tank 1 is controlled by the discharge valve 12.

[0038] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A precipitation reaction apparatus for producing silica, characterized in that: The device includes a reaction tank and a lifting assembly. A lifting plate is provided above the reaction tank. The lifting assembly is used to drive the lifting plate to move up and down. A stirring assembly and a driving assembly are provided on the lifting plate. The driving assembly is used to drive the stirring assembly to rotate so as to stir the material in the reaction tank.

2. The precipitation reaction apparatus for producing silica according to claim 1, characterized in that: The stirring assembly includes a rotating shaft, a mounting rod, and stirring components. The upper part of the rotating shaft is rotatably connected to the lifting plate, the mounting rod is fixed to the lower part of the rotating shaft, and there are two stirring components symmetrically arranged on the mounting rod.

3. The precipitation reaction apparatus for producing silica according to claim 2, characterized in that: The stirring component includes a circular disc and multiple guide slices. The circular disc has a through hole in the middle and is movably fitted onto the mounting rod through the through hole. Limiting rings are provided on both sides of the circular disc on the mounting rod. The multiple guide slices are evenly fixed on the periphery of the circular disc to form a stirring cage structure.

4. The precipitation reaction apparatus for producing silica according to claim 3, characterized in that: Both ends of the mounting rod are fixed with a first scraper, which abuts against the inner wall of the reaction tank.

5. A precipitation reaction apparatus for producing silica according to claim 4, characterized in that: A reinforcing plate is fixedly connected to the upper ends of the two first scrapers, and a second scraper is fixedly connected to the lower ends of the two first scrapers.

6. A precipitation reaction apparatus for producing silica according to claim 2, characterized in that: The drive assembly includes a drive motor and a mounting base. The drive motor is fixed to the lifting plate via the mounting base, and the output shaft of the drive motor is connected to the upper end of the rotating shaft.

7. A precipitation reaction apparatus for producing silica according to claim 1, characterized in that: The lifting assembly includes two lifting cylinders. The bottom of the reaction tank is provided with a support base. The two lifting cylinders are symmetrically fixed on the support base, and the telescopic ends of the lifting cylinders are fixedly connected to the bottom of the support base.

8. A precipitation reaction apparatus for producing silica according to claim 2, characterized in that: It also includes a drug addition assembly, which includes a conical disc and an annular baffle. The middle part of the conical disc is fixed on the rotating shaft. The conical disc is located inside the annular baffle. An annular dosing port is provided between the edge of the conical disc and the inner wall of the annular baffle. The top of the annular baffle is connected to the bottom of the lifting plate through a connecting plate.

9. A precipitation reaction apparatus for producing silica according to claim 1, characterized in that: A discharge pipe is provided on one side of the lower part of the reaction tank, and a discharge valve is provided on the discharge pipe.

Images