A stirring device for a storage tank used in the production of aqueous batteries

Abstract

The present invention discloses a stirring device for a storage tank in the production of aqueous batteries, comprising: a tank body, a circulating heating assembly with distributed heating pipes, and a plurality of stirring assemblies connected in series to the distributed heating pipes at the inner bottom of the tank body; each stirring end is a hollow tubular structure that extends vertically downward and has a bottom that bends outward; by utilizing the interaction between the horizontal swirl flow generated by the rotation of the stirring end and the vertical spiral jet flow, and guiding the ejected liquid to re-enter the stirring end for heating and mixing, multiple heating and mixing of the liquid are achieved, improving the uniformity of heating and mixing. The rotation of the stirring assembly is driven by the flow of the heat medium to heat and stir the liquid at different positions in the upper and lower parts of the tank body and inside and outside the stirring end, thereby further improving the uniformity of stirring and heating of the stored liquid, preventing local solidification, and ensuring the continuous and stable operation of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid storage and processing, and particularly to a stirring device for a storage tank used in the production of aqueous batteries. Background Art

[0002] In many industrial production processes, storage tanks are used to store and process various liquid media, such as liquid materials in the fields of chemical industry, food, pharmaceuticals, and petroleum. With the acceleration of the industrialization process, the safety, efficiency, and stability of liquid storage and processing have increasingly become the focus of attention in various industries. If the liquids that have been standing still in the storage tank for a long time lack effective treatment operations, problems such as material deposition, solidification, or performance degradation are likely to occur, which will seriously affect the smooth progress of the production process and subsequent processes.

[0003] In the production of aqueous batteries, a stirring device for a storage tank is a necessary key equipment, and is often applied to the links of electrolyte preparation and electrode paste preparation. In the prior art, an immersion-driven stirring device is usually arranged at a position near the bottom wall inside the storage tank. This device is driven by a motor, which drives the stirring blades to rotate, lifts the bottom liquid upward, and pushes the surrounding liquid to flow, so as to achieve the stirring of the liquid. Although this single stirring method promotes the mixing and flow of the liquid to a certain extent and prevents material deposition and stratification. However, since this stirring device is mainly concentrated in the bottom area, it can only stir the liquid near the bottom and cannot effectively stir and process the liquid in the upper part of the storage tank, resulting in uneven mixing of the liquid in the entire storage tank. In addition, the stirring system driven by a motor often has a relatively complex structure and consumes a high amount of energy during operation. Especially when processing viscous liquids, stronger power may be required, which further increases the operating cost.

[0004] These storage tanks equipped with only a single stirring device usually also have a heating device to adapt to the characteristics of various stored liquids. During the storage process, the heating device is designed to maintain a certain temperature to prevent the stored liquid from solidifying or undergoing other physical and chemical changes. For example, the preparation of the electrolyte may require controlling the temperature to promote dissolution, or some materials have a high viscosity at low temperatures and need to be heated to reduce the viscosity for uniform mixing. However, ordinary heating devices can often only provide heat in certain areas of the storage tank, resulting in uneven temperature distribution of the stored liquid, thereby affecting the overall performance of the liquid.

[0005] Therefore, there is an urgent need to design a stirring device for a storage tank used in the production of aqueous batteries to improve the mixing and heating effects of the liquid at various positions in the storage tank, and have a simpler structure without the need for a motor-driven to provide additional kinetic energy. Summary of the Invention

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0007] A stirring device for a storage tank used in the production of an aqueous battery, mainly comprising: a tank body in the shape of a flat-bottomed cylinder, a circulating heating assembly with distributed heating pipes, and a plurality of stirring assemblies arranged at the bottom inside the tank body; the plurality of stirring assemblies are connected to the distributed heating pipes in series;

[0008] Further, each stirring assembly includes: a rotating shaft located at the central position on the top of the turbine device, a box body, a cylindrical body sleeved outside the rotating shaft and connected to the box body, a heat medium flow chamber formed between the rotating shaft and the cylindrical body, and an upper stirring part and a lower stirring part with the same structure; the turbine device is arranged inside the box body;

[0009] Further, the upper stirring part and the lower stirring part are arranged along the longitudinal direction on the outer periphery of the cylindrical body;

[0010] Further, the upper stirring part includes a plurality of stirring ends annularly distributed radially along the outer periphery of the cylindrical body;

[0011] Further, each stirring end is a hollow tubular structure that extends vertically downward, with the bottom bent outward; the bottoms of the plurality of stirring ends are all bent outward away from the cylindrical body and are distributed in a radial pattern;

[0012] Further, each stirring end includes: a liquid suction port, a liquid discharge port, an upper straight pipe section, an intermediate bent section, a lower diversion section, an upper arc surface, and a lower arc surface;

[0013] Further, the intermediate bent section starts from the bottom of the upper straight pipe section, bends gradually downward in a direction away from the cylindrical body, and extends until it is connected to the lower diversion section;

[0014] Further, the lower diversion section bends gradually upward in a direction away from the cylindrical body, so that the liquid discharge port faces upward; the bending part of the lower diversion section has an inclination angle of 45° - 60° relative to the vertical direction;

[0015] Further, the intermediate bent section and the lower diversion section are the bent parts of each stirring end; the cross-section of the bent part is divided into two upper and lower arcs, where the upper half arc surface is the upper arc surface; the lower half arc surface is the lower arc surface;

[0016] Further, the distance between the outermost end of the upper arc surface and the center line of the rotating shaft is L1, and the distance between the outermost end of the lower arc surface and the center line of the rotating shaft is L2, and L1 < L2.

[0017] Further, the pipe diameter of the upper straight pipe section is the same as that of the lower diversion section; and the pipe diameters of both are smaller than the pipe diameter of the intermediate bent section; that is, the pipe diameter of the intermediate bent section is the largest;

[0018] Further, the length of the upper straight pipe section is the shortest; the length of the intermediate bent section is the longest;

[0019] Further, the upper straight pipe section is closely attached to the cylindrical body;

[0020] Further, the uppermost end of the stirring end, i.e., the port of the upper straight pipe section, is the liquid suction port;

[0021] Further, the upper straight pipe section, the middle bent section, and the lower diversion section are arranged in sequence downward from the liquid suction port; the end port of the lower diversion section is the liquid discharge port.

[0022] Further, the bottom of the box body is fixedly connected to the inner bottom of the tank body;

[0023] Further, both sides of the box body are respectively communicated with the distributed heating pipelines;

[0024] Further, a turbine device is arranged inside the box body; there is a through hole at the upper end of the box body;

[0025] Further, a rotating shaft is arranged at the central position on the top of the turbine device; a cylindrical body is sleeved outside the rotating shaft vertically passing upward through the through hole;

[0026] Further, the upper end of the cylindrical body is closed, and this closed upper end is fixedly connected to the upper end of the rotating shaft;

[0027] Further, the lower end of the cylindrical body is open, and this open lower end is hermetically connected to the through hole of the box body through a bearing;

[0028] Further, a heat medium flow chamber with an annular cross-section is formed between the cylindrical body and the rotating shaft.

[0029] Further, the circulating heating assembly includes: the distributed heating pipelines arranged at the inner bottom of the tank body; and the discharge pipe, cooling system, return pipe, heat supply device, heat medium input pipe, circulating pump, and heat medium output pipe that are sequentially connected along the supply direction of the heat medium outside the tank body and starting from the output end of the distributed heating pipelines.

[0030] Further, the pump inlet of the circulating pump is connected to the heat supply device through the heat medium input pipe;

[0031] Further, the pump outlet of the circulating pump is connected to the input end of the distributed heating pipelines through the heat medium output pipe;

[0032] Further, the distributed heating pipelines are arranged at the inner bottom of the tank body;

[0033] Further, the output end of the distributed heating pipelines is connected to the cooling system through the discharge pipe, and then connected to the heat supply device through the return pipe to form a closed-loop system.

[0034] Furthermore, the distributed heating pipes together form a system consisting of multiple interconnected pipes;

[0035] Furthermore, the circulation pump is a power device used to drive the fluid to circulate within the system.

[0036] Furthermore, a sealed cover body with a liquid inlet for the tank body is provided at the upper part of the tank body;

[0037] Furthermore, a liquid outlet for the tank body is also provided at the bottom of the tank body.

[0038] The beneficial effects of the present invention are as follows:

[0039] The present invention provides a stirring device for a storage tank in the production of aqueous batteries. Through the specially designed hollow tubular stirring end and the combination of the distributed heating pipes and multiple stirring devices, efficient stirring and uniform heating of the stored liquid are achieved without additional mechanical kinetic energy, and the structure is simpler; by utilizing the interaction between the horizontal swirl flow generated by the rotation of the stirring end and the vertical spiral flow, the flow disorder inside the stored liquid is enhanced, thereby effectively improving the stirring and mixing effects of the stored liquid in the tank body; at the same time, the segmented structure of the stirring end optimizes the flow rate, pressure and flow direction distribution of the stored liquid inside the stirring end, promotes the formation of eddy currents inside the stirring end, and improves the mixing effect of the stored liquid inside the stirring end; and guides the ejected stored liquid to re-enter the stirring end through the liquid suction port for reheating and mixing again, realizing multiple mixing of the stored liquid and enhancing the overall heating uniformity.

[0040] Two identically structured stirring parts are longitudinally arranged on the outer periphery of the cylindrical body. By using the heat medium to transfer heat, the stored liquid at the upper and lower parts inside the tank body and at different positions inside and outside the stirring end is heated and stirred, increasing the contact area and frequency of heating and stirring, thereby further enhancing the uniformity of stirring and heating of the stored liquid, preventing local solidification, and ensuring the continuous and stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of the overall structure of a stirring device for a storage tank in the production of aqueous batteries according to the present invention.

[0042] Figure 2 is a schematic diagram of the distribution of the stirring parts in the present invention.

[0043] Figure 3 is a schematic diagram of the internal structure of the stirring assembly in the present invention.

[0044] Figure 4 is a schematic diagram of the structure of the stirring end in the present invention.

[0045] Figure 5 is a schematic diagram of the distributed pipe heater in the present invention.

[0046] In the figure: 1. Tank body; 11. Sealing cover body; 12. Liquid inlet of the tank body; 13. Liquid outlet of the tank body; 2. Circulating heating assembly; 21. Distributed heating pipeline; 211. Input end; 212. Output end; 22. Heat medium output pipe; 23. Circulation pump; 231. Pump inlet; 232. Pump outlet; 24. Discharge pipe; 25. Heat supply device; 26. Heat medium input pipe; 27. Cooling system; 28. Return pipe; 3. Stirring assembly; 31. Turbine device; 32. Rotating shaft; 33. Box body; 331. Through hole; 34. Cylindrical body; 35. Heat medium flow chamber; 36. Upper stirring part; 361. Stirring end; 3611. Liquid suction port; 3612. Liquid discharge port; 3613. Upper straight pipe section; 3614. Intermediate bending section; 3615. Lower diversion section; 3616. Upper arc surface; 3617. Lower arc surface; 37. Lower stirring part. Specific embodiments

[0047] The following describes in detail the preferred embodiments of the present invention with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.

[0048] As Figures 1-5 shown, a stirring device for a storage tank used in the production of aqueous batteries mainly includes: a tank body 1 in the shape of a flat-bottomed cylinder, a circulating heating assembly 2 having a distributed heating pipeline 21, and a plurality of stirring assemblies 3 provided at the inner bottom of the tank body 1; the plurality of stirring assemblies 3 are connected to the distributed heating pipeline 21 in series;

[0049] the plurality of stirring assemblies 3 are connected to the distributed heating pipeline 21; part of the heat medium is sequentially transmitted to the plurality of stirring assemblies 3 through the distributed heating pipeline 21, and the flow of the heat medium causes each stirring assembly 3 to rotate to stir and mix the stored liquid in the tank body 1.

[0050] As Figure 3 shown, each stirring assembly 3 includes: a rotating shaft 32 located at the central position on the top of the turbine device 31, a box body 33, a cylindrical body 34 sleeved outside the rotating shaft 32, a heat medium flow chamber 35 formed between the rotating shaft 32 and the cylindrical body 34, and an upper stirring part 36 and a lower stirring part 37 having the same structure;

[0051] the turbine device 31 is arranged inside the box body 33; the cylindrical body 34 is further connected to the box body 33;

[0052] On the outer periphery of the cylindrical body 34, an upper stirring part 36 and a lower stirring part 37 are arranged in the longitudinal direction; among them, the upper stirring part 36 is arranged at the upper end of the cylindrical body 34; the lower stirring part 37 is arranged at intervals below the upper stirring part 36; such an arrangement enables the storage liquids located in the upper and lower parts of the storage tank to be stirred and mixed; the turbine device 31 is a prior art and is not the focus of the present invention, so it will not be described in detail. The following will describe the upper stirring part 36 in detail. The structure of the lower stirring part 37 is the same as that of the upper stirring part 36; the number of the upper stirring part 36 and the lower stirring part 37 can be set according to the size of the tank body 1 and the actual stirring requirements.

[0053] The upper stirring part 36 includes a plurality of stirring ends 361 annularly distributed radially along the outer periphery of the cylindrical body 34;

[0054] Each stirring end 361 is a hollow tubular structure that extends vertically downward, with the bottom bent outward; the bottoms of the plurality of stirring ends 361 are all bent outward away from the cylindrical body 34 and are radially distributed;

[0055] Each stirring end 361 includes: a liquid suction port 3611, a liquid discharge port 3612, an upper straight pipe section 3613, an intermediate bent section 3614, a lower diversion section 3615, an upper arc surface 3616, and a lower arc surface 3617;

[0056] The intermediate bent section 3614 starts from the bottom of the upper straight pipe section 3613, gradually bends downward in the direction away from the cylindrical body 34, and extends until it is connected to the lower diversion section 3615;

[0057] Furthermore, the intermediate bent section 3614 gradually changes the flow direction of the storage liquid in the stirring end 361 through the bent structure: on the one hand, it ensures that the liquid smoothly enters the lower diversion section 3615 and maintains the continuity of the flow; on the other hand, when the storage liquid passes through the intermediate bent section 3614, the changes in the flow rate and pressure promote the formation of a vortex at the intermediate bent section 3614, and the formation of the vortex can improve the internal mixing and heating effects of the storage liquid.

[0058] The lower diversion section 3615 gradually bends upward in the direction away from the cylindrical body 34, so that the liquid discharge port 3612 faces upward; the inclination angle of the bent part of the lower diversion section 3615 with respect to the vertical direction is 45° - 60°;

[0059] Furthermore, the intermediate bent section 3614 and the lower diversion section 3615 are the bent parts of each stirring end 361; the cross-section of this bent part is divided into two upper and lower arcs, among which, the upper half arc surface is the upper arc surface 3616; the lower half arc surface is the lower arc surface 3617;

[0060] Specifically: such as Figure 3As shown, the distance between the outermost end of the upper arc surface 3616 and the center line of the rotating shaft 32 is L1, and the distance between the outermost end of the lower arc surface 3617 and the center line of the rotating shaft 32 is L2, where L1 < L2;

[0061] With such a design, the stored liquid in the stirring end 361 can smoothly flow out along the lower diversion section 3615 to the liquid discharge port 3612 under the combined action of gravity and centrifugal force, and the discharged stored liquid can effectively return to the liquid suction port 3611, thereby realizing multiple mixing and heating of the stored liquid in the stirring end 361.

[0062] Furthermore, the diameter of the upper straight pipe section 3613 is the same as that of the lower diversion section 3615; and the diameters of both are smaller than that of the middle bent section 3614; that is, the diameter of the middle bent section 3614 is the largest;

[0063] The length of the upper straight pipe section 3613 is the shortest; the length of the middle bent section 3614 is the longest;

[0064] Furthermore, when the stored liquid passes through the middle bent section 3614, due to the relatively long length of this section, the stored liquid has sufficient time to interact within this section, further enhancing the formation intensity of the eddy current; at the same time, the diameter of this section is the largest, reducing the flow resistance of the stored liquid and enabling it to pass through this section at a higher speed, thereby enhancing the kinetic energy of the flow. This high-speed flow combined with the bent structure of the middle bent section 3614 not only helps to form a strong eddy current but also promotes the full mixing of the stored liquid and improves the heat transfer efficiency.

[0065] The upper straight pipe section 3613 is closely attached to the cylindrical body 34.

[0066] Furthermore, the heat medium flows in the cylindrical body 34, which can further heat the stored liquid around the outside of the cylindrical body 34 and at the same time transfer heat to the stirring end 361 to indirectly heat the stored liquid in the stirring end 361; this increases the contact area of the stored liquid with heat, can reduce the viscosity of the stored liquid, and prevent it from solidifying due to too low temperature; thus reducing the phenomenon of blockage in the tank body 1 or poor operation of the equipment.

[0067] Furthermore, the uppermost end of the stirring end 361, that is, the port of the upper straight pipe section 3613, is the liquid suction port 3611; the liquid suction port 3611 is used to suck the stored liquid into the stirring end 361;

[0068] The liquid suction port 3611 is successively arranged with the upper straight pipe section 3613, the middle bent section 3614, and the lower diversion section 3615 downward;

[0069] The end port of the lower diversion section 3615 is the liquid discharge port 3612; the liquid discharge port 3612 discharges the stored liquid in the stirring end 361 to the outside of the stirring end 361.

[0070] Furthermore, the stirring end 361 rotates and stirs in the stored liquid, and the shear resistance generated in the horizontal circumferential direction forms a swirling flow W, which effectively stirs the surrounding stored liquid.

[0071] When the stored liquid flows into the stirring end 361 through the liquid suction port 3611, the centrifugal force generated by the rotation of the stirring end 361 pushes the stored liquid to flow outward, increasing the flow power; finally, the stored liquid is violently discharged from the liquid discharge port 3612, forming a jet flow, and generating a flow M in the vertical spiral direction. The flow M further breaks the boundary of the stored liquid layer, enabling the stored liquid in different regions to quickly converge.

[0072] The combination of the swirling flow W and the flow M produces a stronger mixing effect, enabling the stored liquid to be fully stirred in the tank body 1, improving the mixing uniformity and heat transfer efficiency.

[0073] Meanwhile, as Figure 4 shown, when the stored liquid is ejected from the liquid discharge port 3612, due to kinetic energy and inertia, part of the stored liquid continues to bend upward along the extension path N of the lower diversion section 3615 after ejection, and is finally guided to the liquid suction port 3611 and re-enters the stirring end 361 for reheating and mixing again, increasing the number of stirring and heating times.

[0074] Furthermore, the bottom of the box body 33 is fixedly connected to the inner bottom of the tank body 1;

[0075] Both sides of the box body 33 are respectively communicated with the distributed heating pipeline 21; so that the heat medium enters the box body 33 through the distributed heating pipeline 21;

[0076] A turbine device 31 is arranged inside the box body 33; the upper end of the box body 33 has a through hole 331;

[0077] A rotating shaft 32 is arranged at the central position on the top of the turbine device 31; the rotating shaft 32 is tightly fixed to the turbine device 31 through mechanical connection to ensure that the turbine device 31 can effectively transmit the rotational power of the turbine device 31 and drive the rotating shaft 32 to rotate;

[0078] A cylindrical body 34 is sleeved outside the rotating shaft 32 vertically passing through the through hole 331;

[0079] The upper end of the cylindrical body 34 is closed, and this closed upper end is fixedly connected to the upper end of the rotating shaft 32; during rotation, the rotating shaft 32 drives the cylindrical body 34 to rotate together;

[0080] The lower end of the cylindrical body 34 is open, and the open lower end is hermetically connected to the through hole 331 of the box body 33 through a bearing;

[0081] A heat medium flow chamber 35 with an annular cross-section is formed between the cylindrical body 34 and the rotating shaft 32.

[0082] Furthermore, the heat medium flows from the distributed heating pipe 21 into the box body 33 and enters the heat medium flow chamber 35. Through the flow of the heat medium, the turbine device 31 drives the rotating shaft 32 and the cylindrical body 34 to rotate together, so that the upper stirring part 36 and the lower stirring part 37 rotate and stir in the stored liquid, eliminating the need for an additional motor drive and reducing energy consumption.

[0083] Furthermore, the circulating heating assembly 2 includes: a distributed heating pipe 21 provided at the inner bottom of the tank body 1; and a discharge pipe 24, a cooling system 27, a return pipe 28, a heat supply device 25, a heat medium input pipe 26, a circulating pump 23, and a heat medium output pipe 22 that are sequentially connected along the supply direction of the heat medium on the outside of the tank body 1 and from the output end 212 of the distributed heating pipe 21; the circulating heating assembly 2 is used to heat the stored liquid in the tank body 1.

[0084] Furthermore, the pump inlet 231 of the circulating pump 23 is connected to the heat supply device 25 through the heat medium input pipe 26; sucking the heat medium heated by the heat supply device 25;

[0085] The pump outlet 232 of the circulating pump 23 is connected to the input end 211 of the distributed heating pipe 21 through the heat medium output pipe 22; pushing the heat medium to flow towards the distributed heating pipe 21 to heat the stored liquid in the tank body 1;

[0086] The output end 212 of the distributed heating pipe 21 is connected to the cooling system 27 through the discharge pipe 24, and then connected to the heat supply device 25 through the return pipe 28 to form a closed-loop system; after the heat medium is discharged from the output end 212 of the discharge pipe 24, it is cooled by the cooling system 27 and finally returns to the heat supply device 25 for reheating;

[0087] The heat supply device 25 can be selected according to actual needs, such as: solar thermal energy system, electric heater, steam heating system, etc.

[0088] Furthermore, the distributed heating pipe 21 is a system composed of multiple pipes. The distributed heating pipe 21 can not only effectively heat the stored liquid in the tank body 1, but also transport part of the heat medium into the box body 33, and promote the rotation of the turbine device 31 through the flow of the heat medium, so as to achieve the stirring and mixing effects without additional mechanical energy.

[0089] The distributed heating pipe 21 can adopt distribution forms such as spiral, folded, and coiled according to the size of the tank body 1 and the properties of the stored liquid, etc., to ensure the best heating effect.

[0090] The circulation pump 23 is a power device used to drive the circulation of fluids (such as liquids or gases) within the system.

[0091] The distributed heating pipe 21, the circulation pump 23, the temperature and pressure control technologies during the circulation heating process, as well as the related fluid transmission and heat exchange systems, have been widely applied in many fields such as agriculture, food processing, chemical industry, and building heating. These technologies have mature design solutions and perfect application systems, and their effectiveness and reliability have been fully verified in numerous actual cases. They belong to the existing mature technologies and are not the focus of the present invention, so no more elaboration will be made. Specific application examples and technical details can be referred to relevant literatures and industry standards to deeply understand their working principles, design standards, and application effects, such as: EP2500574A1, CN204952314U.

[0092] Furthermore, a sealed cover body 11 with a tank body liquid inlet 12 is provided at the upper part of the tank body 1; the tank body liquid inlet 12 is used for the addition and replenishment of the stored liquid; this design helps to maintain the pressure stability inside the tank body 1 and prevent external pollution at the same time.

[0093] A tank body liquid outlet 13 is also provided at the bottom of the tank body 1; it is used to discharge or transfer the stored liquid inside the tank body 1 to the outside of the tank body 1 for subsequent treatment, transportation, and use.

[0094] Specific working mode: The heated heat medium passes through the heating supply device 25, successively through the heat medium input pipe 26, the circulation pump 23, and the heat medium output pipe 22, and enters the distributed heating pipe 21. The distributed heating pipe 21 is not only used to heat the stored liquid inside the tank body 1, but also enables part of the heat medium to enter the box body 33, prompting the heat medium to flow and drive the turbine device 31 to rotate, thereby achieving the stirring and mixing effects. After passing through the distributed heating pipe 21, the heat medium passes through the discharge pipe 24, the cooling system 27, and the return pipe 28 in sequence from the output end 212, and then enters the heating supply device 25 for circulation heating.

[0095] When the heat medium passes through the distributed heating pipeline 21, it successively passes through multiple stirring components 3, flows into the box body 33 at the inner bottom of the tank body 1, and enters the heat medium flow chamber 35 located on the upper side of the box body 33 and communicated with it. The flow of the heat medium in the box body 33 drives the turbine device 31 to rotate. The turbine device 31 transmits the rotational power to the rotating shaft 32, thereby driving the rotating shaft 32 and the upper stirring part 36 and the lower stirring part 37 with the same longitudinal arrangement on the cylindrical body 34 to rotate together. The upper stirring part 36 stirs the stored liquid in the upper part of the tank body 1, and the lower stirring part 37 stirs the stored liquid in the lower part of the tank body 1, so as to ensure that the stored liquid in the upper and lower parts of the tank body 1 can be fully stirred.

[0096] During this process, the stirring end 361 rotates in the stored liquid, generating a shear resistance in the horizontal circumferential direction to form a swirling flow W; at the same time, under the action of the centrifugal force of the rotation of the stirring end 361, the stored liquid is strongly discharged in the form of a jet flow through the liquid discharge port 3612, generating a flow M in the vertical spiral direction; the swirling flow W and the flow M merge and interact with each other, enhancing the flow disorder inside the stored liquid, thereby effectively improving the stirring and mixing efficiency of the stored liquid in the tank body 1.

[0097] During the stirring process, the stored liquid is sucked into the stirring end 361 of the tubular structure through the liquid suction port 3611. The upper straight pipe section 3613 at the upper end of the stirring end 361 is tightly fixed on the cylindrical body 34. After the cylindrical body 34 is heated by the inflowing heat medium, the heat is transferred to the upper straight pipe section 3613, thereby further heating the stored liquid flowing into the stirring end 361; this can increase the heating area of the stored liquid and prevent the local stored liquid from solidifying due to too low temperature, affecting the normal operation of the equipment.

[0098] When the stored liquid enters the middle bent section 3614 of the stirring end 361, due to the relatively long length and large diameter of this section, the stored liquid has enough time to interact within this section, and the flow rate and pressure change to a certain extent, promoting the formation of eddy currents. This not only improves the mixing effect of the stored liquid in the stirring end 361, but also provides greater kinetic energy and inertia for the stored liquid when it is ejected from the liquid discharge port 3612, so that after the stored liquid is ejected, it continues to flow upward along the extension path N of the lower diversion section 3615 and is guided to the liquid suction port 3611, and re-enters the stirring end 361 through the liquid suction port 3611 for heating and mixing, thereby forming an effective multiple mixing.

[0099] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A tank stirring device for aqueous battery production, mainly comprising: A flat-bottomed cylindrical tank (1), a circulating heating component (2) having a distributed heating pipeline (21), and a plurality of stirring components (3) arranged at the bottom of the inner side of the tank (1); the plurality of stirring components (3) are connected in series with the distributed heating pipeline (21); the characteristics are: Each stirring assembly (3) comprises: a turbine device (31), a rotating shaft (32) located at the top center position of the turbine device (31), a housing (33), a cylindrical body (34) sleeved on the outside of the rotating shaft (32) and connected to the housing (33), a heat medium flow chamber (35) formed between the rotating shaft (32) and the cylindrical body (34), and an upper stirring portion (36) and a lower stirring portion (37) having the same structure; the turbine device (31) is arranged inside the housing (33); the upper stirring portion (36) and the lower stirring portion (37) are arranged on the outer circumference of the cylindrical body (34) along the longitudinal direction; The upper stirring portion (36) comprises a plurality of stirring ends (361) radially distributed in an annular manner along the outer circumference of the cylindrical body (34); Each stirring end (361) is a hollow tubular structure extending vertically downward and having a bottom that bends outward; the bottoms of the plurality of stirring ends (361) are all bent outward away from the cylindrical body (34) and are distributed radially; each stirring end (361) comprises: a liquid suction port (3611), a liquid discharge port (3612), an upper straight pipe section (3613), a middle curved section (3614), a lower guide section (3615), an upper curved surface (3616), and a lower curved surface (3617); The middle curved section (3614) starts from the bottom of the upper straight pipe section (3613), gradually bends and extends downward in a direction away from the cylindrical body (34), and finally connects with the lower guide section (3615); The lower end guide section (3615) is gradually bent upward in a direction away from the cylindrical body (34), so that the liquid discharge port (3612) is directed upward; the inclination angle of the bent portion of the lower end guide section (3615) relative to the vertical direction is 45° to 60°; The middle curved section (3614) and the lower end guide section (3615) are curved portions of each stirring end (361); the cross section of the curved portion is divided into two upper and lower arcs, wherein the upper arc surface is the upper arc surface (3616); and the lower arc surface is the lower arc surface (3617); The distance between the end of the upper arc surface (3616) and the center line of the rotation axis (32) is L1, and the distance between the end of the lower arc surface (3617) and the center line of the rotation axis (32) is L2, L1<L2; The pipe diameter of the upper straight pipe section (3613) is the same as the pipe diameter of the lower diversion section (3615); and the pipe diameters of both are smaller than the pipe diameter of the middle curved section (3614); that is, the pipe diameter of the middle curved section (3614) is the largest; The length of the upper straight pipe section (3613) is the shortest; the length of the middle curved section (3614) is the longest; The upper straight pipe section (3613) is tightly fitted with the cylindrical body (34); The port of the upper straight pipe section (3613) is a liquid suction port (3611); An upper straight pipe section (3613), a middle curved section (3614), and a lower guide section (3615) are sequentially arranged downward from the liquid suction port (3611); The end port of the lower end guide section (3615) is the liquid discharge port (3612); Both sides of the box body (33) are respectively connected to the distributed heating pipeline (21).

2. A tank stirring device for aqueous battery production according to claim 1, characterized in that: The bottom of the box body (33) is connected and fixed to the inner bottom of the tank body (1); The upper end of the box body (33) has a through hole (331); A cylindrical body (34) is sleeved on the outer side of the rotating shaft (32) passing through the through hole (331) vertically upward; The upper end of the cylindrical body (34) is closed, and the closed upper end is connected and fixed to the upper end of the rotating shaft (32); The lower end of the cylindrical body (34) is open, and the open lower end is sealedly connected to the through hole (331) of the housing (33) via a bearing; A heat medium flow chamber (35) having a ring-shaped cross section is formed between the cylindrical body (34) and the rotating shaft (32).

3. A tank stirring device for aqueous battery production according to claim 2, characterized in that: The circulating heating assembly (2) comprises: a distributed heating pipeline (21) arranged at the inner bottom of the tank body (1); and a discharge pipe (24), a cooling system (27), a return pipe (28), a heat supply device (25), a heat medium input pipe (26), a circulating pump (23), and a heat medium output pipe (22) connected in sequence from the output end (212) of the distributed heating pipeline (21) along the supply direction of the heat medium on the outer side of the tank body (1).

4. A tank stirring device for aqueous battery production according to claim 3, characterized in that: The pump inlet (231) of the circulation pump (23) is connected to the heat supply device (25) via a heat medium input pipe (26); The pump outlet (232) of the circulation pump (23) is connected to the input end (211) of the distributed heating pipeline (21) via the heat medium output pipe (22); The output end (212) of the distributed heating pipeline (21) is connected to the cooling system (27) through the discharge pipe (24), and then connected to the heat supply device (25) through the return pipe (28), forming a closed-loop system.

5. A tank stirring device for aqueous battery production according to claim 4, characterized in that: The distributed heating pipeline (21) is a system composed of a plurality of interconnected pipelines; The circulation pump (23) is a power device used to promote the circulation of fluid in the system.

6. A tank stirring device for aqueous battery production according to claim 5, characterized in that: A sealing cover (11) having a tank liquid inlet (12) is provided on the upper part of the tank body (1); The bottom of the tank body (1) is also provided with a tank body liquid outlet (13).

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