Reaction kettle with built-in stirrer

By installing brush bristles on the outside of the stirrer blades to scrape the surface of the iron plate material, the problem of excess iron powder mixing with the displacement products is solved, which improves the efficiency of the copper ion displacement reaction and production efficiency, and reduces the subsequent separation cost.

CN223530427UActive Publication Date: 2025-11-11NINGBO LVFAN ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Application Number
CN202522135167.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-10
Publication Date
2025-11-11
Estimated Expiration
2035-10-10

AI Technical Summary

Technical Problem

In the wet treatment of copper-containing wastewater, excess iron powder mixes with the replacement products, requiring post-treatment separation, which leads to reduced copper ion replacement efficiency and increased process costs.

Method used

The reactor with a built-in agitator uses a brush with bristles on the outside of the agitator blades to scrape the surface of the iron plate material, ensuring reaction activity. The modular design facilitates replacement and maintenance, and avoids mixing of iron powder with the displacement products.

Benefits of technology

It improves the efficiency and thoroughness of the copper ion replacement reaction, reduces post-processing separation steps, and lowers the amount of iron used and production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a reaction kettle with a built-in stirrer. The reaction kettle comprises a reaction kettle body, the stirrer and at least one brush body, wherein the reaction kettle body is provided with an inner cavity; the stirrer is arranged in the inner cavity; a plurality of iron plate materials circumferentially surrounding the stirrer are arranged in the inner cavity; the stirrer comprises a vertically arranged driving shaft and at least one blade; the inner ends of the blades are connected with the driving shaft, and brush bodies are fixedly arranged at the outer ends of the blades; the bristles are arranged on the side, away from the blades, of the brush body. The end face, facing the stirrer, of each iron plate material is located on the moving path of the bristles. The device solves the technical problem that in the prior art, after-treatment is needed for separation due to the fact that redundant iron powder and replacement products are mixed, and the technical effect of accurately controlling the iron reaction amount is achieved.
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Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, specifically to a reaction vessel with a built-in stirrer. Background Technology

[0002] In wet treatment processes for copper-containing wastewater, a common method is to replace the copper in the solution with iron materials.

[0003] In traditional methods, because the surface of the whole piece of iron material will be covered with displacement products during the displacement process, it will be unable to continue to react with the copper-containing waste liquid. Therefore, the displacement reaction is usually carried out by directly adding iron powder into the copper-containing solution, and the reaction vessel body is selected as the container for the displacement reaction. In order to ensure that the reaction is complete and fast, the reaction vessel body with built-in agitator is generally selected. The impeller of the agitator rotates circumferentially to fully mix the iron powder and the solution.

[0004] To ensure that copper ions in copper-containing waste liquid are completely replaced, an excess of iron powder is often added in actual operation. The excess iron powder will precipitate along with the replacement products and then be discharged.

[0005] In the actual production process, after the copper ions are completely replaced, the excess iron powder will mix with the copper products generated by the reaction, forming a mixture precipitate. Therefore, the mixture needs to be further filtered, washed and separated to finally obtain copper and iron slag. This will lead to the waste of iron powder, the addition of subsequent product purification steps, reduced copper ion replacement efficiency and increased process cost. Utility Model Content

[0006] This application provides a reaction vessel with a built-in stirrer to solve the technical problem in the prior art where excess iron powder mixes with the displacement products, requiring post-processing for separation.

[0007] This application provides a reactor with a built-in agitator, comprising: a reactor body having an inner cavity, an agitator disposed in the inner cavity, and at least one brush body with bristles; the inner cavity contains a plurality of iron plate materials arranged circumferentially around the agitator; the agitator includes a vertically arranged drive shaft and at least one blade; the inner ends of the blades are all connected to the drive shaft, and the outer ends of the blades are fixedly provided with brush bodies; the bristles are disposed on the brush body on the side away from the blades; the end face of each iron plate material facing the agitator is located on the moving path of the brush bristles.

[0008] By adopting the above technical solution, iron plate material with a circumferentially surrounding agitator in the inner cavity replaces traditional iron powder, and a brush with bristles is set on the outside of the agitator blades. The bristles continuously scrape the surface of the iron plate material during rotation, effectively removing the copper replacement products attached to it, and maintaining the continuous exposure of the reactive surface of the iron plate material. This ensures the efficiency and thoroughness of the copper ion replacement reaction, avoids the problem of excess iron powder and replacement products mixing when using iron powder, and avoids complex post-processing separation procedures, thereby improving the production efficiency of replacement products.

[0009] Preferably, the lower end of the drive shaft is provided with multiple blades spaced circumferentially, and each blade has a brush body on its outer end.

[0010] By adopting the above technical solution, multiple blades are set on the drive shaft, and a brush is set on the outer end of each blade, so that the surface of multiple iron plate materials can be cleaned simultaneously when the stirrer rotates, ensuring that the activity of iron plate materials in each area of ​​the reaction system is uniform and consistent, and avoiding the problem of reduced efficiency caused by insufficient local reaction or product accumulation.

[0011] Preferably, the brush body is elongated and arranged vertically, and the bristles are linearly and evenly distributed along the length of the brush body.

[0012] By adopting the above technical solution, the brush body is designed as a vertical strip and the bristles are linearly and evenly distributed along its length, maximizing the coverage area generated by the bristles when rotating with the blades, thereby improving the scraping efficiency of the replacement products on the surface of the iron plate material.

[0013] Preferably, the brush body and the outer end of the blade are detachably connected.

[0014] By adopting the above technical solution, the brush body and blades are connected in a detachable manner, which facilitates the individual replacement or maintenance of the brush body according to the wear condition, and reduces the long-term use cost of the equipment.

[0015] Preferably, the outer end of the blade is provided with screw holes spaced vertically upwards and downwards, and the brush body is connected to the screw holes by bolts.

[0016] By adopting the above technical solution, screw holes are pre-drilled at intervals on the outer end of the blade, and the brush body is detachably fixed to the blade by the cooperation of bolts and screw holes. The cooperation of bolts and screw holes ensures the connection stability of the brush body and makes it easy to disassemble and assemble.

[0017] Preferably, the inner cavity is also provided with multiple mounting components for fixing the iron plate material. The multiple mounting components are arranged circumferentially around the agitator, and each iron plate material is detachably connected to the mounting component.

[0018] By adopting the above technical solution, the circumferentially distributed installation components are set to achieve detachable fixing of the iron plate material, which not only ensures the stability of the iron plate material under the scraping force of the brush and the action of the fluid, but also facilitates the replacement or cleaning of the iron plate material after the reaction is completed, thereby improving the convenience of operation and the utilization rate of the equipment.

[0019] Preferably, each mounting component includes a first fixing member, a second fixing member, and a bracket arranged sequentially from top to bottom. The first fixing member and the second fixing member are respectively provided with a first through hole and a second through hole that are vertically penetrating and suitable for the sequential insertion of iron plate materials. The inner walls of all the first through holes and the second through holes are in contact with the outer surface of the iron plate materials, and the bracket is located below the second through hole.

[0020] By adopting the above technical solution, a combination structure of a first fixing component, a second fixing component, and a bracket is set, and a first through hole and a second through hole that fit the shape of the iron plate material are set on the first fixing component and the second fixing component, so that the iron plate material can be inserted in the vertical direction and supported by the bracket, realizing rapid positioning and installation and stable support, and reducing the time of iron plate material installation operation.

[0021] Preferably, each first through hole and each second through hole is arc-shaped at the end facing the stirrer, and the concave surface of the arc is facing the stirrer. The radius of the arc of all first and second through holes is greater than the radius of rotation of the brush body and less than the radius of rotation of the brush bristles.

[0022] By adopting the above technical solution, the first and second through holes are designed as arcs with their concave surfaces facing the agitator, and the arc radii of the first and second through holes are matched with the rotation radius of the agitator. This ensures that multiple iron plate materials surround the agitator to form a uniformly distributed reaction interface, so that the movement trajectory of the brush bristles maintains the best contact state with the surface of the iron plate materials, thereby improving the cleaning effect and reaction uniformity.

[0023] Preferably, a reactor with a built-in stirrer further includes a cover at the upper end of the reactor body. The cover has a plurality of first openings suitable for the entry of iron plate material. Each first opening is connected to the inner cavity. The plurality of first openings are circumferentially spaced apart, and each first opening is located above a first through hole.

[0024] By adopting the above technical solution, multiple first openings corresponding to the first through holes are set on the cover at the upper end of the reactor body, so that iron plate materials can be directly inserted or removed through the first openings without opening the cover, which greatly improves operating efficiency and production continuity, while reducing environmental pollution and material loss that may occur during the opening process.

[0025] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0026] 1. By combining the brush body set on the blade with the circumferentially distributed iron plate material, the surface of the iron plate material can be continuously scraped during the stirring process, effectively removing the attached products and maintaining the reactivity of the iron plate material surface, thereby ensuring the continuous progress and thoroughness of the displacement reaction, and reducing the subsequent separation cost caused by excessive iron addition.

[0027] 2. It adopts a modular and detachable design, including the detachable connection between the brush body and the blades, as well as the pull-out disassembly and insertion installation of the iron plate material. This not only ensures operational stability but also facilitates the replacement and maintenance of each component, while ensuring structural stability and reliability during operation.

[0028] 3. By matching the first and second through holes set at the top and bottom with the first opening of the cover, the iron plate material can be quickly filled and removed without opening the cover, reducing the risk of external contamination. The overall structure is reasonably designed, easy to operate, and highly practical. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A cross-sectional view of a reaction vessel with a built-in stirrer provided for this application;

[0031] Figure 2 A top view of a reaction vessel with a built-in stirrer provided for this application;

[0032] Figure 3 A top view of a brush body and a drive shaft with two blades in a reactor with a built-in stirrer provided in this application;

[0033] Figure 4 A top view of a brush body and a drive shaft with four blades in a reactor with a built-in stirrer provided in this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Reactor body; 11. Inner cavity; 12. Cover; 121. First opening; 2. Drive shaft; 3. Blade; 31. Plate; 4. Brush body; 41. Brush bristles; 5. First fixing component; 51. First through hole; 6. Second fixing component; 61. Second through hole; 7. Support; 8. Iron plate material. Detailed Implementation

[0035] This application provides a reaction vessel with a built-in stirrer to solve the technical problem in the prior art where excess iron powder mixes with the displacement products, requiring post-processing for separation.

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] 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.

[0039] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0040] 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.

[0041] Example 1: As Figures 1 to 3As shown, an embodiment of this application provides a reactor with a built-in stirrer, including: a reactor body 1 with an inner cavity 11, a stirrer disposed in the inner cavity 11, and at least one brush body 4 with bristles 41; the inner cavity 11 is provided with a plurality of iron plate materials 8 arranged circumferentially around the stirrer; the stirrer includes a vertically arranged drive shaft 2 and at least one blade 3; the inner ends of the blades 3 are all connected to the drive shaft 2, and the brush body 4 is fixed on the outer ends of the blades; the bristles 41 are disposed on the side of the brush body 4 away from the blades 3; the end face of each iron plate material 8 facing the stirrer is located on the moving path of the bristles 41.

[0042] In a preferred embodiment provided in this application, the reactor body 1 includes a cylindrical vessel body. The inner cavity 11 of the vessel body is provided with a vertically installed drive shaft 2 and four iron plate materials 8 arranged around the drive shaft 2. The upper end of the drive shaft 2 passes through the middle of the cover body 12 and is connected to the drive motor. The lower end of the drive shaft 2 is fixedly connected with two blades 3. The two blades 3 are symmetrically arranged. A brush body 4 is provided at the end of each blade 3 away from the drive shaft 2. When the blade 3 rotates to the iron plate material 8, the brush bristles 41 scrape the side of the iron plate material 8 facing the stirrer.

[0043] In this process, the brush bristles 41 continuously scrape the surface of the iron plate material 8 during rotation, effectively removing the copper replacement products attached to it and maintaining the continuous exposure of the reactive surface of the iron plate material 8. This ensures the efficiency and thoroughness of the copper ion replacement reaction, avoids the problem of excess iron powder and replacement products mixing when using iron powder, and thus avoids complex post-processing separation procedures, improving the production efficiency of replacement products.

[0044] Furthermore, such as Figure 1 and Figure 3 As shown, in the embodiment provided in this application, the brush body 4 is elongated and arranged in a vertical direction, and the bristles 41 are linearly and uniformly distributed along the length of the brush body 4; the brush body 4 is detachably connected to the outer end of the blade 3; the outer end of the blade 3 is provided with screw holes spaced vertically, and the brush body 4 is connected to the screw holes by bolts.

[0045] In a preferred embodiment provided in this application, each blade 3 is composed of an elongated strip 31 arranged in parallel vertically, and each elongated strip 31 has a screw hole at its outer end. The brush body 4 is elongated and vertically installed, and both ends of the brush body 4 are fixed to the two strips 31 by bolts and screw holes. The end face of the brush body 4 away from the drive shaft 2 is provided with bristles 41, and the bristles 41 are vertically and uniformly linearly distributed along the elongated brush body 4.

[0046] Specifically, by designing the brush body 4 as a vertical strip and making the bristles 41 linearly and evenly distributed along its length, the coverage area generated by the bristles 41 when rotating with the blade is maximized, thereby improving the scraping efficiency of the replacement products on the surface of the iron plate material 8. At the same time, screw holes are pre-set at intervals on the outer end of the blade 3, and the brush body 4 is detachably fixed to the blade 3 by the cooperation of bolts and screw holes. The cooperation of bolts and screw holes ensures the connection stability of the brush body and is easy to disassemble and assemble.

[0047] Furthermore, such as Figure 1 As shown in the embodiment provided in this application, the inner cavity 11 is also provided with a plurality of mounting components for fixing the iron plate material 8. The plurality of mounting components are arranged circumferentially around the stirrer, and each iron plate material 8 is detachably connected to the mounting component.

[0048] In a preferred embodiment provided in this application, four sets of mounting components and four corresponding iron plate materials 8 are welded circumferentially at intervals in the inner cavity 11.

[0049] The detachable fixing of the iron plate material 8 is achieved by setting circumferentially distributed installation components, which not only ensures the stability of the iron plate material 8 under the scraping force of the brush bristles 41 and the action of fluid, but also facilitates the replacement or cleaning of the iron plate material 8 after the reaction is completed.

[0050] Furthermore, such as Figure 1 As shown in the embodiments provided in this application, each mounting component includes a first fixing member 5, a second fixing member 6, and a bracket 7 arranged sequentially from top to bottom. The first fixing member 5 and the second fixing member 6 are respectively provided with a first through hole 51 and a second through hole 61 that are vertically penetrating and suitable for the iron plate material 8 to be inserted sequentially. The inner walls of all the first through holes 51 and the second through holes 61 are in contact with the outer surface of the iron plate material 8. The bracket 7 is located below the second through hole 61.

[0051] In a preferred embodiment provided in this application, the horizontal plane of the first fixing member 5 is located above the upper end face of the blade 3, and the horizontal plane of the second fixing member 6 is located below the lower end face of the blade 3; the first fixing member 5 and the second fixing member 6 are respectively provided with a through hole 51 and a through hole 61, and a bracket 7 is provided directly below the second through hole 61.

[0052] The combination structure of the first fixing member 5, the second fixing member 6 and the bracket 7 is provided, and the first through hole 51 and the second through hole 61 that fit the shape of the iron plate material 8 are provided on the first fixing member 5 and the second fixing member 6, so that the iron plate material 8 can be inserted in the vertical direction and supported by the bracket 7, thereby realizing rapid positioning and installation and stable support, and reducing the installation time of the iron plate material 8.

[0053] Furthermore, such as Figure 1As shown in the embodiment provided in this application, each first through hole 51 and each second through hole 61 is arc-shaped at the end facing the stirrer, and the concave surface of the arc is set towards the stirrer. The arc radius of all first through holes 51 and second through holes 61 is greater than the rotation radius of the brush body 4 and less than the rotation radius of the brush bristles 41.

[0054] In a preferred embodiment provided in this application, both the first through hole 51 and the second through hole 61 are arc-shaped through holes, and the inner and outer arc radii of the arc-shaped through holes are smaller than the rotation radius of the brush bristles 41. When the "arc-shaped" iron plate material 8 is inserted into the mounting assembly, the inner and outer end faces of the iron plate material 8 are both located within the rotation radius of the brush bristles 41.

[0055] By designing the first through hole 51 and the second through hole 61 as arc-shaped with their concave surfaces facing the agitator, it is ensured that multiple iron plate materials 8 form a uniformly distributed reaction interface around the agitator, so that the movement trajectory of the brush bristles 41 maintains the best contact state with the surface of the iron plate materials 8, thereby improving the cleaning effect and reaction uniformity.

[0056] Furthermore, in the embodiments provided in this application, a reactor with a built-in stirrer also includes a cover 12 disposed at the upper end of the reactor body 1. The cover 12 is provided with a plurality of first openings 121 suitable for the entry of iron plate material 8. Each first opening 121 is connected to the inner cavity 11. The plurality of first openings 121 are circumferentially spaced apart, and each first opening 121 is disposed above a first through hole 51.

[0057] Preferably, the cover 12 of the reactor body 1 is provided with four through first openings 121, and each first opening 121 is on the same vertical axis as the first through hole 51 and the second through hole 61 below.

[0058] By setting multiple first openings corresponding to the first through holes 51 on the cover 12 at the upper end of the reactor body 1, the iron plate material 8 can be directly inserted or removed through the first opening 121 without opening the cover, which greatly improves the operating efficiency and production continuity, while reducing the environmental pollution and material loss that may occur during the opening process.

[0059] Working principle: Before the equipment is run, the arc-shaped iron plate material 8 is vertically inserted through the first opening 121, passing through the first through hole 51 and the second through hole 61 in sequence and supported and fixed by the bracket 7. When the equipment is running, the drive motor drives the blade 3 to rotate, and the brush body 4 at the outer end of the blade 3 moves in a circular motion at a certain angular velocity. The brush bristles 41 continuously scrape the surface of the four iron plate materials 8, thereby scraping off the precipitated replacement products, maintaining the active surface of the iron plate materials 8, and ensuring that the replacement reaction continues. After the reaction is completed, the iron plate material 8 that has completed the reaction can be directly extracted through the first opening 121 of the cover body 12, and a new iron plate material 8 can be inserted for the next operation.

[0060] In this embodiment, by replacing iron powder with iron plate material 8 as the reaction raw material, the problem of excess iron powder mixing with the displacement product when using iron powder is avoided, thereby avoiding complex post-processing separation procedures and improving the production efficiency of the displacement product.

[0061] Example 2: Further, slightly different from Example 1 above, as follows... Figure 1 and Figure 4 As shown, in this embodiment, a plurality of blades 3 are circumferentially spaced at the lower end of the drive shaft 2, and a brush body 4 is provided on the outer end of each blade 3.

[0062] Preferably, in this embodiment, such as Figure 4 As shown, the lower end of the drive shaft 2 is provided with four blades 3, and each blade 3 has a brush body 4 on its outer end.

[0063] In this embodiment, by setting four blades 3 on the drive shaft 2 and setting a brush body 4 at the outer end of each blade 3, the surface of multiple iron plate materials 8 can be cleaned simultaneously when the stirrer rotates, ensuring that the activity of iron plate materials 8 in each area of ​​the reaction system is uniform and consistent, and avoiding the problem of reduced efficiency caused by insufficient local reaction or product accumulation.

[0064] It should be noted that the order of the embodiments described above is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, specific embodiments have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0065] The above description is only a preferred embodiment of this application and is not intended to limit this application. 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.

[0066] This specification and accompanying drawings are merely illustrative examples of this application and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from its scope. Therefore, if such modifications and modifications fall within the scope of this application and its equivalents, this application intends to include such modifications and modifications.

Claims

1. A reaction vessel with a built-in stirrer, characterized in that: The reactor body (1) includes an inner cavity (11) and a stirrer and at least one brush body (4) with bristles (41) disposed in the inner cavity (11); the inner cavity (11) contains a plurality of iron plate materials (8) arranged circumferentially around the stirrer; the stirrer includes a vertically arranged drive shaft (2) and at least one blade (3); the inner ends of the blades (3) are all connected to the drive shaft (2), and the brush body (4) is fixed on the outer ends of the blades; the bristles (41) are disposed on the side of the brush body (4) away from the blades (3); the end face of each iron plate material (8) facing the stirrer is located on the moving path of the bristles (41).

2. The reaction vessel with a built-in stirrer according to claim 1, characterized in that, The drive shaft (2) has multiple blades (3) spaced circumferentially at its lower end, and each blade (3) has a brush body (4) on its outer end.

3. A reaction vessel with a built-in stirrer according to claim 1, characterized in that, The brush body (4) is long and vertical, and the bristles (41) are linearly and uniformly distributed along the length of the brush body (4).

4. A reaction vessel with a built-in stirrer according to claim 3, characterized in that, The brush body (4) is detachably connected to the outer end of the blade (3).

5. A reaction vessel with a built-in stirrer according to claim 4, characterized in that, The outer end of the blade (3) is provided with screw holes that are spaced up and down along the vertical direction, and the brush body (4) is connected to the screw holes by bolts.

6. A reaction vessel with a built-in stirrer according to claim 1, characterized in that, The inner cavity (11) is also provided with a plurality of mounting components for fixing the iron plate material (8). The plurality of mounting components are arranged circumferentially around the stirrer, and each iron plate material (8) is detachably connected to the mounting component.

7. A reaction vessel with a built-in stirrer according to claim 6, characterized in that, Each of the mounting components includes a first fixing member (5), a second fixing member (6), and a bracket (7) arranged sequentially from top to bottom. The first fixing member (5) and the second fixing member (6) are respectively provided with a first through hole (51) and a second through hole (61) that are vertically penetrating and suitable for the sequential insertion of the iron plate material (8). The inner walls of all the first through holes (51) and the second through holes (61) are in contact with the outer surface of the iron plate material (8). The bracket (7) is located below the second through hole (61).

8. A reaction vessel with a built-in stirrer according to claim 7, characterized in that, Each of the first through holes (51) and each of the second through holes (61) is arc-shaped at the end facing the stirrer, and the concave surface of the arc is set towards the stirrer. The arc radius of all the first through holes (51) and the second through holes (61) is greater than the rotation radius of the brush body (4) and less than the rotation radius of the bristles (41).

9. A reaction vessel with a built-in stirrer according to claim 8, characterized in that, It also includes a cover (12) located at the upper end of the reactor body (1). The cover (12) has a plurality of first openings (121) suitable for the entry of iron plate material (8). Each first opening (121) is connected to the inner cavity (11). The plurality of first openings (121) are circumferentially spaced. Each first opening (121) is located above a first through hole (51).