Reaction tank with good reaction effect
By designing internal conduction components and unidirectional flow components in the reaction tank, the problems of limited feed volume and low solid content in traditional production ternary precursors are solved, and high production capacity and high spherical shape products are achieved, satisfying lithium Production requirements for battery positive electrode materials.
Patent Information
- Application Number
- CN202420829849.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-04-19
AI Technical Summary
During the reaction process of traditional batch method for producing ternary precursors, the feed volume of metal salt solution is limited, which affects the production capacity, and the low solid content leads to poor spherical shape, which affects the uniformity of the sintering of the positive electrode material.
A reaction tank with good reaction effect was designed. Through the inner guide assembly and the one-way flow assembly, the uniform layout and continuous reaction of the concentrated slurry are achieved, the flow rate of the metal salt solution is increased, and the solid content and spherical degree are improved.
It improves production capacity and product sphericality, ensures uniform mixing and continuous reaction of concentrated slurry, and meets the production needs of lithium battery positive electrode materials.
Smart Images
Figure CN222518570U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a reaction tank for producing a ternary precursor, in particular to a reaction tank with good reaction effect. Background Art
[0002] With the rapid development of the lithium battery industry, ternary lithium batteries have been increasingly widely used due to their high energy density and good stability. As the main raw material of ternary positive electrode materials, the performance of ternary precursors directly affects the performance of ternary lithium batteries. The main equipment in the synthesis section of the traditional intermittent production of ternary precursors is the reactor, and the process adopts an overflow method to maintain the particle size of the material within the qualified range by adjusting the pH of the reaction materials.
[0003] The above method has low energy consumption cost and short cycle time for producing ternary precursors, and can produce finished products in the shortest time. However, since the reaction process must ensure that the theoretical growth time of the material is 5 to 15 hours, the feed amount of the metal salt solution is limited, which directly affects its production capacity. At the same time, its solid content is mainly determined by the ion concentration of the metal salt solution. The low solid content can easily lead to poor sphericity of the ternary precursor, which will directly affect the uniformity of the sintering of the positive electrode material, and then affect the uniformity of the battery. In addition, how to completely fuse the concentrated slurry at the bottom with the upper solution during the nucleation stage to increase the solid content is also a pain point of the existing technology. Utility Model Content
[0004] The utility model provides a reaction tank with good reaction effect, which can not only increase the flow rate of metal salt solution and improve production capacity, but also evenly distribute the concentrated slurry refluxed from the concentration tank to other positions of the reaction tank, thereby further improving the sphericity of the product.
[0005] The utility model is achieved in this way:
[0006] A reaction tank with good reaction effect, comprising a reaction tank body, a reaction stirring shaft is arranged in the reaction tank body, and further comprising
[0007] An inner guide component, wherein the reaction stirring shaft is hollow, a rotary joint is arranged on the reaction stirring shaft, the rotary joint is connected to an air pump arranged on the top of the reaction tank body, the inner guide component comprises a reversing tube connected to the concentrated slurry conveying pipe, the end of the reversing tube is plugged into the bottom of the reaction stirring shaft, a sealing member is rotatably installed between the reversing tube and the reaction stirring shaft, a lifting structure is arranged at the bottom of the reversing tube, when the air pump generates negative pressure and draws the concentrated slurry in the concentrated slurry conveying pipe into the hollow reaction stirring shaft, when the air pump outputs positive pressure, the concentrated slurry in the reaction stirring shaft is pumped into the reaction tank body through the reaction stirring shaft;
[0008] A one-way circulation component, wherein a plurality of stirring handles are arranged on the reaction stirring shaft, and the one-way circulation component comprises a plurality of liquid outlet holes opened on the stirring handle, and a closed structure which can slide in the stirring handle is arranged on the side of the liquid outlet hole close to the stirring handle, and the closed structure moves toward one side of the reaction stirring shaft when the air pump generates negative pressure, and moves toward the side away from the reaction stirring shaft when the air pump generates positive pressure.
[0009] As a further improvement, the reversing pipe comprises a transverse output section connected to the concentrated slurry conveying pipe, the transverse output section is connected to a reversing section, the reversing section is connected to the reaction stirring shaft, and the reversing section is a hook-shaped structure.
[0010] As a further improvement, the lifting structure includes an annular seat arranged on the outer side of the bottom of the reversing section, and a plurality of steel shafts are fixedly connected to the outer periphery of the annular seat, and the steel shafts are connected to the inner wall of the reaction tank body.
[0011] As a further improvement, a hinge is provided at one end of the steel shaft away from the annular seat, and the hinge is locked on a fixed seat. A straight plate is welded to the bottom of the fixed seat, and the straight plate supports the steel shaft.
[0012] As a further improvement, the sealing member comprises an inner clamping ring fixedly connected to the top of the reversing section, the inner clamping ring is movably connected to the bottom of the reaction stirring shaft, and a plurality of sealing gaskets are sleeved on the outside of the inner clamping ring.
[0013] As a further improvement, the sealing member further comprises an outer tube fixedly connected to the annular seat, and the outer tube is fitted on the outer side wall of the reaction stirring shaft.
[0014] As a further improvement, the closed structure comprises a closed block slidable in the stirring handle, and when the closed block slides to a side away from the reaction stirring shaft, the liquid outlet is communicated with the reaction stirring shaft.
[0015] As a further improvement, a spring is fixedly connected to one side of the closing block away from the reaction stirring shaft, and the other side of the spring is locked to the inner side wall of the stirring handle.
[0016] The beneficial effects of the utility model are:
[0017] In the process of discharging the concentrated slurry, in order to avoid damaging the structure of the particles by pumping, the concentrated slurry cannot be transported by pumping, and the concentrated slurry can only be passed into the reaction tank body by active inflow. However, this may easily lead to the reflux of the concentrated slurry and the inability to flow into the reaction tank body. Secondly, the concentrated slurry will be located at the bottom of the reaction tank body after input, and it is difficult to mix with other solutions in time and evenly. Even if the concentrated slurry is input, the effect of its continuous reaction is not good. Therefore, the utility model adopts an internal guide component to directly inject the concentrated slurry into the hollow reaction stirring shaft through a reversing tube, and then flow evenly to each position of the solution through the stirring handle on the reaction stirring shaft, thereby improving the uniform effect of continuous use of the concentrated slurry. Moreover, the injection method is through the negative pressure suction of an air pump, so the appearance of the particles will not be damaged, and the appearance of the product after molding meets the production requirements.
[0018] The concentrated slurry flows into the interior of the reaction stirring shaft through the reversing tube, and a large amount of concentrated slurry containing particulate matter will cause great pressure on the reversing tube, which may easily cause it to bend or even pop out of the reaction stirring shaft. Therefore, the utility model sets a part of the reversing tube as a lateral output section, and the other part as a reversing section. The reversing section is a hook-shaped structure, which itself has a certain curvature. Therefore, when the concentrated slurry flows in, its external shape structure will not be easily changed, and its hook-shaped position can also play a certain buffering role, and it can itself undergo adaptive deformation at a certain angle.
[0019] In order to further reinforce the reversing section and to support the position of the fixed reaction stirring shaft, the utility model also arranges a lifting structure at the bottom of the reversing section. The lifting structure can support the reversing tube that may jump, so that the concentrated slurry can continue to flow stably toward the inside of the reaction stirring shaft, thereby achieving a virtuous cycle effect.
[0020] If the lifting structure is a completely rigid structure, it is equivalent to easily causing pressure at each stage of concentrated slurry input and output, and its water hammer effect can easily cause deformation of the lifting structure. Therefore, in the utility model, the lifting structure is set as a structure of a hinge and a steel shaft made of spring steel. Regardless of whether the reaction stirring shaft is subjected to negative pressure or positive pressure, the lifting structure can form a certain deformation, thereby avoiding permanent deformation caused by long-term water hammer effect.
[0021] During the cooperation process between the reversing section and the reaction stirring shaft, the two need to be sealed to prevent the solution from being directly drawn into the reaction stirring shaft. Therefore, the utility model arranges a seal between the reversing section and the reaction stirring shaft. The seal is divided into an inner and outer part. One part is sealed by an inner clamping ring, and the inner clamping ring is located in the inner area of the reversing section and the reaction stirring shaft, so that the reaction stirring shaft and the reversing section can achieve relative movement while being sealed to a certain extent. The other part is coated by an outer tube in the outer area, thereby forming an internal and external sealing effect. Even if some of the concentrated slurry flows out directly through the inner clamping ring, it will be blocked by the outer tube. Similarly, if the solution in the reaction tank body flows in through the outer tube, it will be blocked by the inner clamping ring.
[0022] When the concentrated slurry is pumped into the reaction stirring shaft, it is necessary to ensure that the concentrated slurry does not leak out of the reaction stirring shaft, and when the concentrated slurry needs to be discharged, the concentrated slurry needs to be evenly discharged from the outside of the stirring shaft. To this end, the utility model adds a one-way flow component. When the concentrated slurry flows to the reaction stirring shaft, the closed structure will slide to one side of the reaction stirring shaft with the negative pressure, so that the closed structure closes the liquid outlet hole, and the concentrated slurry can be stored in the reaction stirring shaft. When the closed structure is moved to the side away from the reaction stirring shaft under positive pressure, the liquid outlet hole is connected with the inner side of the reaction stirring shaft, so that the concentrated slurry can be evenly discharged into the reaction tank body through the stirring handle, so that the concentrated slurry can be evenly reused to form a continuous reaction. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 It is a three-dimensional structural schematic diagram of a lithium battery ternary precursor preparation device of the utility model.
[0025] Figure 2 It is a schematic diagram of the top view of the structure of a reaction tank with good reaction effect of the utility model.
[0026] Figure 3 This utility model Figure 2 Cross-section view at AA in the middle.
[0027] Figure 4 It is an isometric side sectional view of a reaction tank body of the utility model.
[0028] Figure 5 It is a three-dimensional structural schematic diagram of a reaction stirring shaft of the utility model.
[0029] Figure 6 This utility model Figure 3 Magnified view of area B.
[0030] Figure 7 This utility model Figure 3 Magnified view of area C. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.
[0032] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0033] Reference Figure 1 to Figure 7As shown, a reaction tank with good reaction effect comprises a reaction tank body 10, wherein a reaction stirring shaft 11 is arranged in the reaction tank body 10, a metal salt liquid feeding pipe 12 is opened on the top of the reaction tank body 10, the reaction tank body 10 is communicated with an overflow kettle 20, the reaction tank is connected with a concentration mechanism, and the concentration mechanism is connected with a concentration tank body 21 for concentration, the top of the concentration tank body 21 is connected with the top of the reaction tank body 10 through a feeding pipe 22, and the bottom of the concentration tank body 21 is connected with the top of the reaction tank body 10 through a thick slurry conveying pipe 23 is connected to the side of the bottom of the reaction tank body 10, a control valve 24 is arranged on the concentrated slurry delivery pipe 23, the concentrated tank body 21 drives the concentrated liquid to rotate through a concentrated stirring shaft 25, and a clear liquid output pipe 26 is arranged on the side of the concentrated tank body 21; the inner guide component, the reaction stirring shaft 11 is hollow, a rotary joint 111 is arranged on the reaction stirring shaft 11, and the rotary joint 111 is connected to an air pump 112 arranged on the top of the reaction tank body 10, and the inner guide component includes a control valve 24 connected to the concentrated slurry delivery pipe 23, the concentrated liquid is driven to rotate by a concentrated stirring shaft 25, and a clear liquid output pipe 26 is arranged on the side of the concentrated tank body 21; The reversing tube 31 connected to the thick slurry delivery pipe 23, the end of the reversing tube 31 is plugged into the bottom of the reaction stirring shaft 11, a sealing member 32 is rotatably installed between the reversing tube 31 and the reaction stirring shaft 11, and a lifting structure 33 is provided at the bottom of the reversing tube 31. When the control valve 24 is opened, the air pump 112 generates negative pressure and draws the concentrated slurry in the thick slurry delivery pipe 23 into the hollow reaction stirring shaft 11, and then closes the control valve 24, and at the same time, the air pump 112 outputs positive pressure to draw the concentrated slurry in the reaction stirring shaft 11 through the reaction stirring shaft 11. The stirring shaft 11 is driven into the reaction tank body 10; a one-way circulation component, wherein a plurality of stirring handles 113 are arranged on the reaction stirring shaft 11, and the one-way circulation component comprises a plurality of liquid outlets 41 opened on the stirring handle 113, and a closed structure 42 which can slide in the stirring handle 113 is arranged on the side of the liquid outlet 41 close to the stirring handle 113, and the closed structure 42 moves toward one side of the reaction stirring shaft 11 when the air pump 112 generates negative pressure, and moves toward the side away from the reaction stirring shaft 11 when the air pump 112 generates positive pressure.
[0034] In conventional equipment for producing ternary precursors by an intermittent process, there are problems of low product quality and poor sphericity. Therefore, this embodiment adds a concentrating mechanism in the intermittent process, which can pass the solution after the reaction in the reaction tank body 10 into the concentrating tank body 21. After secondary stirring in the concentrating tank body 21, the concentrated slurry is re-input into the reaction tank body 10 through the concentrated slurry conveying pipe 23, and the supernatant is gradually discharged through the clear liquid output pipe 26. In the intermittent production process, the flow rate of the metal salt solution is increased, and the production capacity is improved. At the same time, by adjusting the valve opening of the clear liquid output pipe 26 and the overflow valve opening of the reaction tank body 10, the solid content of the reaction tank body 10 is increased, and the sphericity of the product is further improved.
[0035] In the entire reaction process mentioned above, the circulation process follows the principle of fast in and fast out and slow increase of the liquid level in the concentration mechanism.
[0036] In the process of discharging the concentrated slurry, in order to avoid damaging the structure of the particles by pumping, the concentrated slurry cannot be transported by pumping, and the concentrated slurry can only be passed into the reaction tank body 10 by active inflow. However, this will easily lead to the reflux of the concentrated slurry and the inability to flow into the reaction tank body 10. Secondly, the concentrated slurry will be located at the bottom of the reaction tank body 10 after being input, and it is difficult to mix with other solutions in a timely and uniform manner. Even if the concentrated slurry is input, the effect of its continuous reaction is not good. Therefore, this embodiment adopts an internal guide component to directly inject the concentrated slurry into the hollow reaction stirring shaft 11 through a reversing tube 31, and then flow evenly to each position of the solution through the stirring handle 113 on the reaction stirring shaft 11, thereby improving the uniform effect of continuous use of the concentrated slurry. In addition, the injection method is through the negative pressure suction of an air pump, so the appearance of the particles will not be damaged, and the appearance of the product after molding meets the production requirements.
[0037] The concentrated slurry flows into the interior of the reaction stirring shaft 11 through the reversing tube 31, and a large amount of concentrated slurry containing particulate matter will cause great pressure on the reversing tube 31, which is easy to bend or even pop out of the reaction stirring shaft 11. Therefore, the reversing tube 31 of this embodiment includes a transverse output section 311 connected to the concentrated slurry conveying pipe 23, and the transverse output section 311 is connected to a reversing section 312. The reversing section 312 is connected to the reaction stirring shaft 11, and the reversing section 312 is a hook-shaped structure. A part of the reversing tube 31 is set as the transverse output section 311, and the other part is the reversing section 312. The reversing section 312 is a hook-shaped structure, which itself has a certain curvature, so when the concentrated slurry flows in, its external shape structure will not be easily changed, and its hook-shaped position can also play a certain buffering role, and it can itself undergo a certain angle of adaptive deformation.
[0038] In order to further reinforce the reversing section 312 and to support the position of the fixed reaction stirring shaft 11, the lifting structure 33 of the present embodiment includes an annular seat 331 arranged on the outer side of the bottom of the reversing section 312, and a plurality of steel shafts 332 are fixedly connected to the outer periphery of the annular seat 331, and the steel shafts 332 are connected to the inner wall of the reaction tank body 10. By setting a lifting structure 33 at the bottom of the reversing section 312, the lifting structure 33 is used to support the reversing tube 31 that may jump, so that the concentrated slurry can continue to flow stably toward the inside of the reaction stirring shaft 11, thereby achieving a virtuous cycle effect. The middle part of the annular seat 331 is hollow, so as to support the bottom of the reversing section 312.
[0039] If the lifting structure 33 is a completely rigid structure, it is equivalent to easily causing pressure at each stage of concentrated slurry input and output, and its water hammer effect can easily cause the lifting structure 33 to deform. Therefore, a hinge 333 is provided at the end of the steel shaft 332 away from the annular seat 331 in this embodiment, and the hinge 333 is locked on a fixed seat 334. A straight plate 335 is welded to the bottom of the fixed seat 334, and the straight plate 335 supports the steel shaft 332. The lifting structure 33 is set to a structure of a hinge 333 and a steel shaft 332 made of spring steel. Regardless of whether the reaction stirring shaft 11 is under negative pressure or positive pressure, the lifting structure 33 can form a certain deformation, thereby avoiding permanent deformation caused by long-term water hammer effect. When the reaction stirring shaft 11 is under negative pressure, the steel shaft 332 will be slightly lifted and deformed on the hinge 333, thereby relieving the pressure when the concentrated slurry flows in.
[0040] During the cooperation process between the reversing section 312 and the reaction stirring shaft 11, the two need to be sealed to prevent the solution from being directly drawn into the reaction stirring shaft 11. Therefore, in this embodiment, a sealing member 32 is arranged between the reversing section 312 and the reaction stirring shaft 11. Specifically, the sealing member 32 not only includes an inner clamping ring 321 fixedly connected to the top of the reversing section 312, the inner clamping ring 321 is movably connected to the bottom of the reaction stirring shaft 11, and the outer part of the inner clamping ring 321 is sleeved with a plurality of sealing gaskets 322. The sealing member 32 also includes an outer tube 323 fixedly connected to the annular seat 331, and the outer tube 323 is attached to the outer side wall of the reaction stirring shaft 11. The sealing member 32 It is divided into two parts, inner and outer. One part is sealed by an inner clamping ring 321, which is located in the inner area of the reversing section 312 and the reaction stirring shaft 11, so that the reaction stirring shaft 11 and the reversing section 312 can achieve relative movement while being sealed to a certain extent. The other part is wrapped in the outer area by an outer tube 323, thereby forming an internal and external sealing effect. Even if part of the concentrated slurry flows out directly through the inner clamping ring 321, it will be blocked by the outer tube 323. Similarly, if the solution in the reaction tank body 10 flows in through the outer tube 323, it will be blocked by the inner clamping ring 321. Even if a two-layer sealing method is used, it will not affect the normal rotation of the reaction stirring shaft 11.
[0041] When the concentrated slurry is drawn into the reaction stirring shaft 11, it is necessary to ensure that the concentrated slurry does not leak out of the reaction stirring shaft 11, and when the concentrated slurry needs to be discharged, the concentrated slurry needs to be evenly discharged from the outside of the stirring shaft. To this end, the utility model adds a one-way flow component. When the concentrated slurry flows to the reaction stirring shaft 11, the closing structure 42 will slide to one side of the reaction stirring shaft 11 with the negative pressure, so that the closing structure 42 closes the liquid outlet 41, and the concentrated slurry can be stored in the reaction stirring shaft 11. When the closing structure 42 is moved to the side away from the reaction stirring shaft 11 under positive pressure, the liquid outlet 41 is communicated with the inner side of the reaction stirring shaft 11, so that the concentrated slurry can be evenly discharged into the reaction tank body 10 through the stirring handle 113, so that the concentrated slurry can be evenly reused to form a continuous reaction.
[0042] In this embodiment, the closing structure 42 includes a closing block 421 that can slide in the stirring handle 113. When the closing block 421 slides to the side away from the reaction stirring shaft 11, the liquid outlet 41 is connected to the reaction stirring shaft 11. When negative pressure suction is formed on the reaction stirring shaft 11, the closing block 421 moves toward the side close to the reaction stirring shaft 11, and when positive pressure is formed on the reaction stirring shaft 11, the closing block 421 moves to the side away from the reaction stirring shaft 11, thereby forming a giving way or blocking effect on the liquid outlet 41.
[0043] In order to allow the closing block 421 to be reset in time, preferably, a spring 422 is fixedly connected to the side of the closing block 421 away from the reaction stirring shaft 11, and the other side of the spring 422 is locked to the inner wall of the stirring handle 113. When there is no pressure, the closing block 421 can be pulled by the spring 422 to prevent the liquid from entering the interior of the reaction stirring shaft 11.
[0044] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A reaction tank with good reaction effect, characterized in that: The invention comprises a reaction tank body (10), wherein a reaction stirring shaft (11) is arranged in the reaction tank body (10), and further comprises An inner guide component, wherein the reaction stirring shaft (11) is hollow, and a rotary joint (111) is arranged on the reaction stirring shaft (11), and the rotary joint (111) is connected to an air pump (112) arranged on the top of the reaction tank body (10), and the inner guide component comprises a reversing tube (31) connected to the concentrated slurry conveying pipe (23), and the end of the reversing tube (31) is plugged into the bottom of the reaction stirring shaft (11), and a sealing member (32) is rotatably installed between the reversing tube (31) and the reaction stirring shaft (11), and a lifting structure (33) is arranged at the bottom of the reversing tube (31). When the air pump (112) generates negative pressure and draws the concentrated slurry in the concentrated slurry conveying pipe (23) into the hollow reaction stirring shaft (11), when the air pump (112) outputs positive pressure, the concentrated slurry in the reaction stirring shaft (11) is pumped into the reaction tank body (10) through the reaction stirring shaft (11); A one-way circulation component, wherein a plurality of stirring handles (113) are arranged on the reaction stirring shaft (11), and the one-way circulation component comprises a plurality of liquid outlet holes (41) opened on the stirring handle (113), and a closed structure (42) which can slide in the stirring handle (113) is arranged on the side of the liquid outlet hole (41) close to the stirring handle (113), and the closed structure (42) moves toward one side of the reaction stirring shaft (11) when the air pump (112) generates negative pressure, and moves toward a side away from the reaction stirring shaft (11) when the air pump (112) generates positive pressure.
2. A reaction tank with good reaction effect according to claim 1, characterized in that: The reversing pipe (31) comprises a transverse output section (311) communicating with the concentrated slurry conveying pipe (23); the transverse output section (311) is connected to a reversing section (312); the reversing section (312) is communicated with the reaction stirring shaft (11); and the reversing section (312) is a hook-shaped structure.
3. A reaction tank with good reaction effect according to claim 2, characterized in that: The lifting structure (33) comprises an annular seat (331) arranged on the outside of the bottom of the reversing section (312), and a plurality of steel shafts (332) are fixedly connected to the outer periphery of the annular seat (331), and the steel shafts (332) are connected to the inner wall of the reaction tank body (10).
4. A reaction tank with good reaction effect according to claim 3, characterized in that: A hinge (333) is provided at one end of the steel shaft (332) away from the annular seat (331), and the hinge (333) is locked on a fixed seat (334). A straight plate (335) is welded to the bottom of the fixed seat (334), and the straight plate (335) supports the steel shaft (332).
5. A reaction tank with good reaction effect according to claim 3, characterized in that: The sealing member (32) comprises an inner retaining ring (321) fixedly connected to the top of the reversing section (312), the inner retaining ring (321) being movably connected to the bottom of the reaction stirring shaft (11), and a plurality of sealing gaskets (322) are sleeved on the outside of the inner retaining ring (321).
6. A reaction tank with good reaction effect according to claim 5, characterized in that: The sealing member (32) further comprises an outer tube (323) fixedly connected to the annular seat (331), and the outer tube (323) is fitted on the outer side wall of the reaction stirring shaft (11).
7. A reaction tank with good reaction effect according to claim 1, characterized in that: The closed structure (42) comprises a closed block (421) which can slide in the stirring handle (113); when the closed block (421) slides to a side away from the reaction stirring shaft (11), the liquid outlet (41) is connected to the reaction stirring shaft (11).
8. A reaction tank with good reaction effect according to claim 7, characterized in that: A spring (422) is fixedly connected to one side of the closing block (421) away from the reaction stirring shaft (11), and the other side of the spring (422) is locked to the inner side wall of the stirring handle (113).